WO2016006884A1 - 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 - Google Patents
방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 Download PDFInfo
- Publication number
- WO2016006884A1 WO2016006884A1 PCT/KR2015/006917 KR2015006917W WO2016006884A1 WO 2016006884 A1 WO2016006884 A1 WO 2016006884A1 KR 2015006917 W KR2015006917 W KR 2015006917W WO 2016006884 A1 WO2016006884 A1 WO 2016006884A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- companion device
- esg
- data
- service
- broadcast
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 193
- 230000008054 signal transmission Effects 0.000 title description 17
- 230000008859 change Effects 0.000 claims description 36
- 238000012508 change request Methods 0.000 claims description 11
- 238000012546 transfer Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 description 207
- 230000011664 signaling Effects 0.000 description 85
- 101000596046 Homo sapiens Plastin-2 Proteins 0.000 description 73
- 102100035182 Plastin-2 Human genes 0.000 description 73
- 230000008569 process Effects 0.000 description 73
- 230000000875 corresponding effect Effects 0.000 description 55
- 238000010586 diagram Methods 0.000 description 39
- 230000005540 biological transmission Effects 0.000 description 35
- 108091006146 Channels Proteins 0.000 description 29
- 238000013507 mapping Methods 0.000 description 29
- 101000596041 Homo sapiens Plastin-1 Proteins 0.000 description 27
- 102100035181 Plastin-1 Human genes 0.000 description 27
- 238000012545 processing Methods 0.000 description 19
- 238000003780 insertion Methods 0.000 description 18
- 230000037431 insertion Effects 0.000 description 18
- 238000004891 communication Methods 0.000 description 13
- 230000007246 mechanism Effects 0.000 description 12
- 230000006978 adaptation Effects 0.000 description 11
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 238000012986 modification Methods 0.000 description 10
- 230000004048 modification Effects 0.000 description 10
- 230000006870 function Effects 0.000 description 8
- 239000011159 matrix material Substances 0.000 description 8
- 230000000737 periodic effect Effects 0.000 description 8
- 230000003068 static effect Effects 0.000 description 8
- 230000002441 reversible effect Effects 0.000 description 7
- 238000003860 storage Methods 0.000 description 7
- 239000000969 carrier Substances 0.000 description 5
- 238000012217 deletion Methods 0.000 description 5
- 230000037430 deletion Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000007726 management method Methods 0.000 description 5
- 101150071746 Pbsn gene Proteins 0.000 description 4
- 102100033763 Transducin-like enhancer protein 4 Human genes 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 4
- 239000012634 fragment Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 3
- 238000001824 photoionisation detection Methods 0.000 description 3
- 230000002123 temporal effect Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000036626 alertness Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005388 cross polarization Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013213 extrapolation Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000001997 free-flow electrophoresis Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/482—End-user interface for program selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26258—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0064—Concatenated codes
- H04L1/0065—Serial concatenated codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0067—Rate matching
- H04L1/0068—Rate matching by puncturing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0071—Use of interleaving
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0853—Network architectures or network communication protocols for network security for authentication of entities using an additional device, e.g. smartcard, SIM or a different communication terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23605—Creation or processing of packetized elementary streams [PES]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
- H04N21/26216—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints involving the channel capacity, e.g. network bandwidth
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26283—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for associating distribution time parameters to content, e.g. to generate electronic program guide data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4108—Peripherals receiving signals from specially adapted client devices characterised by an identification number or address, e.g. local network address
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
- H04N21/41265—The peripheral being portable, e.g. PDAs or mobile phones having a remote control device for bidirectional communication between the remote control device and client device
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42684—Client identification by a unique number or address, e.g. serial number, MAC address, socket ID
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6112—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving terrestrial transmission, e.g. DVB-T
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/632—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing using a connection between clients on a wide area network, e.g. setting up a peer-to-peer communication via Internet for retrieving video segments from the hard-disk of other client devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
Definitions
- the present invention relates to a broadcast signal transmission apparatus, a broadcast signal reception apparatus, and a broadcast signal transmission and reception method.
- the digital broadcast signal may include a larger amount of video / audio data than the analog broadcast signal, and may further include various types of additional data as well as the video / audio data.
- the digital broadcasting system may provide high definition (HD) images, multichannel audio, and various additional services.
- HD high definition
- data transmission efficiency for a large amount of data transmission, robustness of a transmission / reception network, and network flexibility in consideration of a mobile receiving device should be improved.
- a method for providing a broadcast service in a broadcast receiver includes: a network interface unit pairing with a companion device; And the receiving unit receiving an electronic service guide (ESG); Wherein the ESG may be a broadcast service providing method including ESG data relating to at least one or more broadcast services.
- ESG electronic service guide
- ESG data may be a broadcast service providing method, characterized in that the service type information, schedule information, related content information or related component information of the at least one or more broadcast services.
- the method for providing a broadcast service further comprises: delivering change information of an ESG to the companion device, wherein the change information is an addition of the received ESG to pre-stored ESG data;
- the broadcast service providing method may include the changed or deleted ESG data.
- the method of providing a broadcast service comprises: delivering an ID list of broadcast services included in an ESG to said companion device; Receiving ESG data related to specific broadcast services identified by at least one ID of the ID list from the companion device; And forwarding the requested specific broadcast service related ESG data to the companion device.
- the method may further include a broadcast service providing method.
- the method for providing a broadcast service comprises: receiving an ID of a broadcast service currently being viewed from the companion device and delivering the requested ID of the currently viewed broadcast service to the companion device; Receiving ESG data related to the currently viewed service; And forwarding the requested currently watching service related ESG data to the companion device.
- the method may further include a broadcast service providing method.
- the method for providing a broadcast service comprises: receiving a search field indicating a specific field of the ESG data and a target value for the specific field from the companion device; Selecting, by the control unit, ESG data in which a specific field indicated by the search field has the target value; And forwarding the selected ESG data to the companion device.
- the method may further include a broadcast service providing method.
- the method for providing a broadcast service comprises: receiving authentication information of the companion device from the companion device, wherein the authentication information includes device ID information of the companion device; Verifying, by an authentication module, whether the companion device is authenticated using the authentication information; And when the authentication of the companion device is confirmed, transferring device ID information of a broadcast receiver to the companion device;
- the method may further include a broadcast service providing method.
- delivering an ID list to said companion device comprises: receiving a request of said ID list from said companion device, wherein said request of said ID list includes authentication information of said companion device; Verifying, by an authentication module, whether the companion device is authenticated using the authentication information; And when the authentication of the companion device is confirmed, transmitting the ID list and device ID information of the broadcast receiver to the companion device.
- the method may further include a broadcast service providing method.
- the method for providing a broadcast service comprises: receiving a request for a change of a broadcast service currently being viewed from the companion device, wherein the broadcast service change request is based on the delivered ESG data; And changing, by the control unit, the broadcast service being viewed at the broadcast receiver according to the broadcast service change request.
- the method may further include a broadcast service providing method.
- the present invention proposes a broadcast receiver for providing a broadcast service.
- a broadcast receiver providing a broadcast service includes a network interface unit for pairing with a companion device; And a receiving unit for receiving an electronic service guide (ESG).
- ESG electronic service guide
- the ESG may be a broadcast receiver including ESG data about at least one broadcast service.
- the ESG data may be a broadcast receiver, which is service type information, schedule information, related content information, or related component information of the at least one or more broadcast services.
- the network interface unit transfers the change information of the ESG to the companion device, wherein the change information includes added, changed or deleted ESG data of the received ESG relative to previously stored ESG data.
- the change information includes added, changed or deleted ESG data of the received ESG relative to previously stored ESG data.
- It may be a broadcast receiver characterized in that.
- the network interface unit delivers an ID list of broadcast services included in the ESG to the companion device, and ESG data associated with specific broadcast services identified by the at least one ID of the ID list from the companion device;
- a broadcast receiver characterized in that for receiving the request, and delivers the requested specific broadcast service-related ESG data to the companion device.
- the network interface unit is configured to: receive an ID of a broadcast service currently being viewed from the companion device, deliver the requested ID of the currently viewed broadcast service to the companion device, and an ESG associated with the currently viewed service
- the broadcast receiver may be a data receiver, and transmits the requested service-related ESG data to the companion device.
- the network interface unit transmits a search field indicating a specific field of the ESG data and a target value for the specific field from the companion device, and the broadcast receiver indicates that the specific field indicated by the search field is the target.
- the apparatus may further include a control unit that selects ESG data having a value, wherein the network interface unit delivers the selected ESG data to the companion device.
- the network interface unit receives the authentication information of the companion device from the companion device, wherein the authentication information includes device ID information of the companion device, and the broadcast receiver uses the authentication information to provide the companion information. And an authentication module for confirming whether the device is authenticated, wherein the network interface unit transmits device ID information of the broadcast receiver to the companion device when the authentication of the companion device is confirmed. Can be.
- the network interface unit receives the request of the ID list from the companion device, wherein the request of the ID list includes authentication information of the companion device, and the broadcast receiver uses the authentication information to connect the companion device. And an authentication module for confirming whether or not to authenticate the network device, and when the authentication of the companion device is confirmed, the network interface unit transmits the ID list and device ID information of the broadcast receiver to the companion device. It may be a broadcast receiver.
- the network interface unit is requested to change the broadcast service currently being viewed from the companion device, wherein the broadcast service change request is based on the transferred ESG data, and the broadcast receiver according to the broadcast service change request
- the broadcast receiver may further include a control unit for changing a broadcast service viewed by the broadcast receiver.
- the present invention can provide various broadcast services by processing data according to service characteristics to control a quality of service (QoS) for each service or service component.
- QoS quality of service
- the present invention can achieve transmission flexibility by transmitting various broadcast services through the same radio frequency (RF) signal bandwidth.
- RF radio frequency
- the present invention can improve data transmission efficiency and robustness of transmission and reception of broadcast signals using a multiple-input multiple-output (MIMO) system.
- MIMO multiple-input multiple-output
- the present invention it is possible to provide a broadcast signal transmission and reception method and apparatus capable of receiving a digital broadcast signal without errors even when using a mobile reception device or in an indoor environment.
- FIG. 1 shows a structure of a broadcast signal transmission apparatus for a next generation broadcast service according to an embodiment of the present invention.
- FIG 2 illustrates an input formatting block according to an embodiment of the present invention.
- FIG 3 illustrates an input formatting block according to another embodiment of the present invention.
- BICM bit interleaved coding & modulation
- FIG. 5 illustrates a BICM block according to another embodiment of the present invention.
- FIG. 6 illustrates a frame building block according to an embodiment of the present invention.
- FIG 7 illustrates an orthogonal frequency division multiplexing (OFDM) generation block according to an embodiment of the present invention.
- OFDM orthogonal frequency division multiplexing
- FIG. 8 illustrates a structure of a broadcast signal receiving apparatus for a next generation broadcast service according to an embodiment of the present invention.
- FIG. 9 shows a frame structure according to an embodiment of the present invention.
- FIG. 10 illustrates a signaling hierarchy structure of a frame according to an embodiment of the present invention.
- FIG 11 illustrates preamble signaling data according to an embodiment of the present invention.
- FIG 13 illustrates PLS2 data according to an embodiment of the present invention.
- FIG 14 illustrates PLS2 data according to another embodiment of the present invention.
- FIG. 15 illustrates a logical structure of a frame according to an embodiment of the present invention.
- PLS 16 illustrates physical layer signaling (PLS) mapping according to an embodiment of the present invention.
- EAC emergency alert channel
- FEC forward error correction
- 21 illustrates the basic operation of a twisted row-column block interleaver according to an embodiment of the present invention.
- FIG. 22 illustrates an operation of a twisted row-column block interleaver according to another embodiment of the present invention.
- FIG. 23 illustrates a diagonal read pattern of a twisted row-column block interleaver according to an embodiment of the present invention.
- FIG. 24 illustrates XFECBLOCKs interleaved from each interleaving array according to an embodiment of the present invention.
- FIG. 25 illustrates signaling for single memory deinterleaving not affected by the number of symbols in a frame according to an embodiment of the present invention.
- FIG. 26 is a diagram illustrating FI schemes for FSS in signaling for single memory deinterleaving not affected by the number of symbols in a frame according to an embodiment of the present invention.
- FIG. 27 illustrates an operation of a reset mode for FES in signaling for single memory deinterleaving that is not affected by the number of symbols in a frame according to an embodiment of the present invention.
- FIG. 28 is a diagram for mathematically representing an input and an output of a frequency interleaver in signaling for single memory deinterleaving not affected by the number of symbols in a frame according to an embodiment of the present invention.
- 29 is a view illustrating equations of a logical operation mechanism of frequency interleaving according to FI scheme # 1 and FI scheme # 2 in signaling for single memory deinterleaving that is not affected by the number of symbols in a frame according to an embodiment of the present invention. Indicates.
- FIG. 30 is a diagram illustrating an embodiment in which the number of symbols is even in signaling for single memory deinterleaving that is not affected by the number of symbols in a frame according to an embodiment of the present invention.
- 31 is a diagram illustrating an embodiment in which the number of symbols is even in signaling for single memory deinterleaving not affected by the number of symbols in a frame according to an embodiment of the present invention.
- 32 is a diagram illustrating an embodiment in which the number of symbols is odd in signaling for single memory deinterleaving not affected by the number of symbols in a frame according to an embodiment of the present invention.
- 33 is a diagram illustrating an embodiment in which the number of symbols is odd in signaling for single memory deinterleaving not affected by the number of symbols in a frame according to an embodiment of the present invention.
- FIG. 34 illustrates operation of a frequency deinterleaver in signaling for single memory deinterleaving that is not affected by the number of symbols in a frame according to an embodiment of the present invention.
- 35 is a conceptual diagram illustrating a variable data-rate system according to another embodiment of the present invention.
- FIG. 39 is a equation illustrating a reading operation after virtual FEC blocks are inserted according to an embodiment of the present invention.
- 40 is a flowchart illustrating a process of time interleaving according to an embodiment of the present invention.
- FIG. 41 is an equation illustrating a process of determining a shift value and a size of a maximum TI block according to an embodiment of the present invention.
- 44 is a view illustrating a result of a skip operation performed in a reading operation according to an embodiment of the present invention.
- 45 illustrates a writing process of time deinterleaving according to an embodiment of the present invention.
- FIG. 47 is a equation illustrating reading operation of time deinterleaving according to another embodiment of the present invention.
- 48 is a flowchart illustrating a process of time deinterleaving according to an embodiment of the present invention.
- FIG. 49 illustrates a configuration of a main physical device and a companion physical device according to an embodiment of the present invention.
- 50 is a diagram illustrating a protocol stack for supporting hybrid broadcast service according to an embodiment of the present invention.
- FIG. 51 is a diagram illustrating an UPnP type Action mechanism according to an embodiment of the present invention.
- FIG. 52 illustrates a REST mechanism according to an embodiment of the present invention.
- 53 is a diagram illustrating a service for exchanging ESGs between a broadcast receiver and companion devices according to one embodiment of the present invention.
- ESGData state variables are a view showing ESGData state variables according to another embodiment of the present invention.
- 56 is a diagram illustrating a process of delivering an ESGData state variable to a companion device according to an event according to an embodiment of the present invention.
- 57 illustrates a LastChangedESGData state variable according to an embodiment of the present invention.
- FIG. 58 is a diagram illustrating a process of delivering ESG data to a companion device according to the GetESGData action according to an embodiment of the present invention.
- 59 is a diagram illustrating a process of delivering ESG data to a companion device according to GetServiceIds and GetESGbyServiceIds actions according to an embodiment of the present invention.
- 60 is a view illustrating a process of delivering ESG data to a companion device according to the GetCurrentServiceId action according to an embodiment of the present invention.
- FIG. 61 illustrates a process of delivering ESG data to a companion device according to a SearchESG action according to an embodiment of the present invention.
- FIG. 62 is a diagram illustrating an authentication process for delivering ESG data according to an DoAuthenticationForESG action according to an embodiment of the present invention.
- FIG. 63 is a diagram illustrating a process of delivering ESG data to a companion device at the same time as device authentication according to GetServiceIds and GetESGbyServiceIds actions according to another embodiment of the present invention.
- 64 is a diagram illustrating a process of delivering ESG data to a companion device according to the GetService action according to an embodiment of the present invention.
- 65 is a diagram illustrating a process of changing a service of a broadcast receiver in a companion device according to a SetChangeChannel action according to an embodiment of the present invention.
- 66 is a diagram illustrating a method for providing a broadcast service according to an embodiment of the present invention.
- 67 is a diagram illustrating a broadcast receiver according to an embodiment of the present invention.
- the present invention provides an apparatus and method for transmitting and receiving broadcast signals for next generation broadcast services.
- the next generation broadcast service includes a terrestrial broadcast service, a mobile broadcast service, a UHDTV service, and the like.
- a broadcast signal for a next generation broadcast service may be processed through a non-multiple input multiple output (MIMO) or MIMO scheme.
- MIMO multiple input multiple output
- the non-MIMO scheme may include a multiple input single output (MISO) scheme, a single input single output (SISO) scheme, and the like.
- the MISO or MIMO scheme uses two antennas, but the present invention can be applied to a system using two or more antennas.
- the present invention can define three physical profiles (base, handheld, advanced) that are optimized to minimize receiver complexity while achieving the performance required for a particular application. have.
- the physical profile is a subset of all the structures that the corresponding receiver must implement.
- the three physical profiles share most of the functional blocks, but differ slightly in certain blocks and / or parameters. Further physical profiles can be defined later.
- a future profile may be multiplexed with a profile present in a single radio frequency (RF) channel through a future extension frame (FEF). Details of each physical profile will be described later.
- RF radio frequency
- FEF future extension frame
- the base profile mainly indicates the main use of a fixed receiving device in connection with a roof-top antenna.
- the base profile can be moved to any place but can also include portable devices that fall into a relatively stationary reception category.
- the use of the base profile can be extended for handheld devices or vehicles with some improved implementation, but such use is not expected in base profile receiver operation.
- the target signal-to-noise ratio range of reception is approximately 10-20 dB, which includes the 15 dB signal-to-noise ratio receiving capability of existing broadcast systems (eg, ATSC A / 53). Receiver complexity and power consumption are not as important as in battery powered handheld devices that will use the handheld profile. Key system parameters for the base profile are listed in Table 1 below.
- the handheld profile is designed for use in battery powered handheld and in-vehicle devices.
- the device may move at pedestrian or vehicle speed.
- the power consumption as well as the receiver complexity is very important for the implementation of the device of the handheld profile.
- the target signal-to-noise ratio range of the handheld profile is approximately 0-10 dB, but can be set to reach below 0 dB if intended for lower indoor reception.
- the advance profile provides higher channel capability in exchange for greater execution complexity.
- the profile requires the use of MIMO transmission and reception, and the UHDTV service is a target use, for which the profile is specifically designed.
- the enhanced capability may also be used to allow for an increase in the number of services at a given bandwidth, for example multiple SDTV or HDTV services.
- the target signal to noise ratio range of the advanced profile is approximately 20 to 30 dB.
- MIMO transmissions initially use existing elliptic polarization transmission equipment and can later be extended to full power cross polarization transmissions. Key system parameters for the advance profile are listed in Table 3 below.
- the base profile may be used as a profile for both terrestrial broadcast service and mobile broadcast service. That is, the base profile can be used to define the concept of a profile that includes a mobile profile. Also, the advanced profile can be divided into an advanced profile for the base profile with MIMO and an advanced profile for the handheld profile with MIMO. The three profiles can be changed according to the designer's intention.
- Auxiliary stream A sequence of cells carrying data of an undefined modulation and coding that can be used as a future extension or as required by a broadcaster or network operator.
- Base data pipe a data pipe that carries service signaling data
- Baseband Frame (or BBFRAME): A set of Kbch bits that form the input for one FEC encoding process (BCH and LDPC encoding).
- Coded block one of an LDPC encoded block of PLS1 data or an LDPC encoded block of PLS2 data
- Data pipe a logical channel in the physical layer that carries service data or related metadata that can carry one or more services or service components
- Data pipe unit A basic unit that can allocate data cells to data pipes in a frame
- Data symbol OFDM symbol in a frame that is not a preamble symbol (frame signaling symbols and frame edge symbols are included in the data symbols)
- DP_ID This 8-bit field uniquely identifies a data pipe within the system identified by SYSTEM_ID.
- Dummy cell A cell that carries a pseudo-random value used to fill the remaining unused capacity for physical layer signaling (PLS) signaling, data pipes, or auxiliary streams.
- PLS physical layer signaling
- FAC Emergency alert channel
- Frame A physical layer time slot starting with a preamble and ending with a frame edge symbol.
- Frame repetition unit A set of frames belonging to the same or different physical profile that contains an FEF that is repeated eight times in a super-frame.
- FEC Fast information channel
- FECBLOCK set of LDPC encoded bits of data pipe data
- FFT size The nominal FFT size used for a particular mode equal to the active symbol period Ts expressed in cycles of the fundamental period T.
- Frame signaling symbol The higher pilot density used at the start of a frame in a particular combination of FFT size, guard interval, and scattered pilot pattern, which carries a portion of the PLS data. Having OFDM symbol
- Frame edge symbol An OFDM symbol with a higher pilot density used at the end of the frame in a particular combination of FFT size, guard interval, and scatter pilot pattern.
- Frame-group set of all frames with the same physical profile type in a superframe
- Future extention frame A physical layer time slot within a super frame that can be used for future expansion, starting with a preamble.
- Futurecast UTB system A proposed physical layer broadcast system whose input is one or more MPEG2-TS or IP (Internet protocol) or generic streams and the output is an RF signal.
- Input stream A stream of data for the coordination of services delivered to the end user by the system.
- Normal data symbols data symbols except frame signaling symbols and frame edge symbols
- PHY profile A subset of all structures that the corresponding receiver must implement
- PLS physical layer signaling data consisting of PLS1 and PLS2
- PLS1 The first set of PLS data carried in a frame signaling symbol (FSS) with fixed size, coding, and modulation that conveys basic information about the system as well as the parameters needed to decode PLS2.
- FSS frame signaling symbol
- PLS2 The second set of PLS data sent to the FSS carrying more detailed PLS data about data pipes and systems.
- PLS2 dynamic data PLS2 data that changes dynamically from frame to frame
- PLS2 static data PLS2 data that is static during the duration of a frame group
- Preamble signaling data signaling data carried by the preamble symbol and used to identify the basic mode of the system
- Preamble symbol a fixed length pilot symbol carrying basic PLS data and positioned at the beginning of a frame
- Preamble symbols are primarily used for fast initial band scans to detect system signals, their timings, frequency offsets, and FFT sizes.
- Superframe set of eight frame repeat units
- Time interleaving block A set of cells in which time interleaving is performed, corresponding to one use of time interleaver memory.
- Time interleaving group A unit in which dynamic capacity allocation is performed for a particular data pipe, consisting of an integer, the number of XFECBLOCKs that change dynamically.
- a time interleaving group can be directly mapped to one frame or mapped to multiple frames.
- the time interleaving group may include one or more time interleaving blocks.
- Type 1 DP A data pipe in a frame where all data pipes are mapped to frames in a time division multiplexing (TDM) manner
- Type 2 DPs Types of data pipes in a frame where all data pipes are mapped to frames in an FDM fashion.
- XFECBLOCK set of N cells cells carrying all the bits of one LDPC FECBLOCK
- FIG. 1 shows a structure of a broadcast signal transmission apparatus for a next generation broadcast service according to an embodiment of the present invention.
- a broadcast signal transmission apparatus for a next generation broadcast service includes an input format block 1000, a bit interleaved coding & modulation (BICM) block 1010, and a frame building block 1020, orthogonal frequency division multiplexing (OFDM) generation block (OFDM generation block) 1030, and signaling generation block 1040. The operation of each block of the broadcast signal transmission apparatus will be described.
- BICM bit interleaved coding & modulation
- OFDM generation block orthogonal frequency division multiplexing
- signaling generation block 1040 The operation of each block of the broadcast signal transmission apparatus will be described.
- IP streams / packets and MPEG2-TS are the main input formats and other stream types are treated as general streams.
- management information is input to control the scheduling and allocation of the corresponding bandwidth for each input stream.
- One or multiple TS streams, IP streams and / or general stream inputs are allowed at the same time.
- the input format block 1000 can demultiplex each input stream into one or multiple data pipes to which independent coding and modulation is applied.
- the data pipe is the basic unit for controlling robustness, which affects the quality of service (QoS).
- QoS quality of service
- One or multiple services or service components may be delivered by one data pipe. Detailed operations of the input format block 1000 will be described later.
- a data pipe is a logical channel at the physical layer that carries service data or related metadata that can carry one or multiple services or service components.
- the data pipe unit is a basic unit for allocating data cells to data pipes in one frame.
- parity data is added for error correction and the encoded bit stream is mapped to a complex value constellation symbol.
- the symbols are interleaved over the specific interleaving depth used for that data pipe.
- MIMO encoding is performed at BICM block 1010 and additional data paths are added to the output for MIMO transmission. Detailed operations of the BICM block 1010 will be described later.
- the frame building block 1020 may map data cells of an input data pipe to OFDM solid balls within one frame. After mapping, frequency interleaving is used for frequency domain diversity, in particular to prevent frequency selective fading channels. Detailed operations of the frame building block 1020 will be described later.
- the OFDM generation block 1030 can apply existing OFDM modulation having a cyclic prefix as the guard interval.
- a distributed MISO scheme is applied across the transmitter.
- a peak-to-average power ratio (PAPR) scheme is implemented in the time domain.
- PAPR peak-to-average power ratio
- the proposal provides a variety of FFT sizes, guard interval lengths, and sets of corresponding pilot patterns. Detailed operations of the OFDM generation block 1030 will be described later.
- the signaling generation block 1040 may generate physical layer signaling information used for the operation of each functional block.
- the signaling information is also transmitted such that the service of interest is properly recovered at the receiver side. Detailed operations of the signaling generation block 1040 will be described later.
- 2 illustrates an input format block according to an embodiment of the present invention. 2 shows an input format block when the input signal is a single input stream.
- the input format block illustrated in FIG. 2 corresponds to an embodiment of the input format block 1000 described with reference to FIG. 1.
- Input to the physical layer may consist of one or multiple data streams. Each data stream is carried by one data pipe.
- the mode adaptation module slices the input data stream into a data field of a baseband frame (BBF).
- BBF baseband frame
- the system supports three types of input data streams: MPEG2-TS, IP, and GS (generic stream).
- MPEG2-TS features a fixed length (188 bytes) packet where the first byte is a sync byte (0x47).
- An IP stream consists of variable length IP datagram packets signaled in IP packet headers.
- the system supports both IPv4 and IPv6 for IP streams.
- the GS may consist of variable length packets or constant length packets signaled in the encapsulation packet header.
- (a) shows a mode adaptation block 2000 and a stream adaptation (stream adaptation) 2010 for a signal data pipe
- PLS generation block 2020 and PLS scrambler 2030 are shown. The operation of each block will be described.
- the input stream splitter splits the input TS, IP, GS streams into multiple service or service component (audio, video, etc.) streams.
- the mode adaptation module 2010 is composed of a CRC encoder, a baseband (BB) frame slicer, and a BB frame header insertion block.
- the CRC encoder provides three types of CRC encoding, CRC-8, CRC-16, and CRC-32, for error detection at the user packet (UP) level.
- the calculated CRC byte is appended after the UP.
- CRC-8 is used for the TS stream
- CRC-32 is used for the IP stream. If the GS stream does not provide CRC encoding, then the proposed CRC encoding should be applied.
- the BB Frame Slicer maps the input to an internal logical bit format.
- the first receive bit is defined as MSB.
- the BB frame slicer allocates the same number of input bits as the available data field capacity. In order to allocate the same number of input bits as the BBF payload, the UP stream is sliced to fit the data field of the BBF.
- the BB frame header insertion block can insert a 2 bytes fixed length BBF header before the BB frame.
- the BBF header consists of STUFFI (1 bit), SYNCD (13 bit), and RFU (2 bit).
- the BBF may have an extension field (1 or 3 bytes) at the end of the 2-byte BBF header.
- Stream adaptation 2010 consists of a stuffing insertion block and a BB scrambler.
- the stuffing insertion block may insert the stuffing field into the payload of the BB frame. If the input data for the stream adaptation is sufficient to fill the BB frame, STUFFI is set to 0, and the BBF has no stuffing field. Otherwise, STUFFI is set to 1 and the stuffing field is inserted immediately after the BBF header.
- the stuffing field includes a 2-byte stuffing field header and variable sized stuffing data.
- the BB scrambler scrambles the complete BBF for energy dissipation.
- the scrambling sequence is synchronized with the BBF.
- the scrambling sequence is generated by the feedback shift register.
- the PLS generation block 2020 may generate PLS data.
- PLS provides a means by which a receiver can connect to a physical layer data pipe.
- PLS data consists of PLS1 data and PLS2 data.
- PLS1 data is the first set of PLS data delivered to the FSS in frames with fixed size, coding, and modulation that convey basic information about the system as well as the parameters needed to decode the PLS2 data.
- PLS1 data provides basic transmission parameters including the parameters required to enable reception and decoding of PLS2 data.
- the PLS1 data is constant during the duration of the frame group.
- PLS2 data is the second set of PLS data sent to the FSS that carries more detailed PLS data about the data pipes and systems.
- PLS2 contains parameters that provide enough information for the receiver to decode the desired data pipe.
- PLS2 signaling further consists of two types of parameters: PLS2 static data (PLS2-STAT data) and PLS2 dynamic data (PLS2-DYN data).
- PLS2 static data is PLS2 data that is static during the duration of a frame group
- PLS2 dynamic data is PLS2 data that changes dynamically from frame to frame.
- the PLS scrambler 2030 may scramble PLS data generated for energy distribution.
- the aforementioned blocks may be omitted or may be replaced by blocks having similar or identical functions.
- FIG 3 illustrates an input format block according to another embodiment of the present invention.
- the input format block illustrated in FIG. 3 corresponds to an embodiment of the input format block 1000 described with reference to FIG. 1.
- FIG. 3 illustrates a mode adaptation block of an input format block when the input signal corresponds to a multi input stream.
- a mode adaptation block of an input format block for processing multi input streams may independently process multiple input streams.
- a mode adaptation block for processing a multi input stream may be an input stream splitter 3000 or an input stream synchro.
- Each block of the mode adaptation block will be described.
- Operations of the CRC encoder 3050, the BB frame slicer 3060, and the BB header insertion block 3070 correspond to the operations of the CRC encoder, the BB frame slicer, and the BB header insertion block described with reference to FIG. Is omitted.
- the input stream splitter 3000 splits the input TS, IP, and GS streams into a plurality of service or service component (audio, video, etc.) streams.
- the input stream synchronizer 3010 may be called ISSY.
- ISSY can provide suitable means to ensure constant bit rate (CBR) and constant end-to-end transmission delay for any input data format.
- CBR constant bit rate
- ISSY is always used in the case of multiple data pipes carrying TS, and optionally in multiple data pipes carrying GS streams.
- Compensating delay block 3020 may delay the split TS packet stream following the insertion of ISSY information to allow TS packet recombination mechanisms without requiring additional memory at the receiver. have.
- the null packet deletion block 3030 is used only for the TS input stream. Some TS input streams or split TS streams may have a large number of null packets present to accommodate variable bit-rate (VBR) services in the CBR TS stream. In this case, to avoid unnecessary transmission overhead, null packets may be acknowledged and not transmitted. At the receiver, the discarded null packet can be reinserted in the exact place it originally existed with reference to the deleted null-packet (DNP) counter inserted in the transmission, ensuring CBR and time stamp (PCR) updates. There is no need.
- VBR variable bit-rate
- the header compression block 3040 can provide packet header compression to increase transmission efficiency for the TS or IP input stream. Since the receiver may have a priori information for a particular portion of the header, this known information may be deleted at the transmitter.
- the receiver may have a priori information about the sync byte configuration (0x47) and the packet length (188 bytes). If the input TS delivers content with only one PID, that is, one service component (video, audio, etc.) or service subcomponent (SVC base layer, SVC enhancement layer, MVC base view, or MVC dependent view) Only, TS packet header compression may (optionally) be applied to the TS. TS packet header compression is optionally used when the input stream is an IP stream. The block may be omitted or replaced with a block having similar or identical functions.
- FIG. 4 illustrates a BICM block according to an embodiment of the present invention.
- the BICM block illustrated in FIG. 4 corresponds to an embodiment of the BICM block 1010 described with reference to FIG. 1.
- the broadcast signal transmission apparatus for the next generation broadcast service may provide a terrestrial broadcast service, a mobile broadcast service, a UHDTV service, and the like.
- the BICM block according to an embodiment of the present invention can independently process each data pipe by independently applying the SISO, MISO, and MIMO schemes to the data pipes corresponding to the respective data paths.
- the apparatus for transmitting broadcast signals for the next generation broadcast service according to an embodiment of the present invention may adjust QoS for each service or service component transmitted through each data pipe.
- the BICM block shared by the base profile and the handheld profile and the BICM block of the advanced profile may include a plurality of processing blocks for processing each data pipe.
- the processing block 5000 of the BICM block for the base profile and the handheld profile includes a data FEC encoder 5010, a bit interleaver 5020, a constellation mapper 5030, a signal space diversity (SSD) encoding block ( 5040, and a time interleaver 5050.
- a data FEC encoder 5010 a bit interleaver 5020
- a constellation mapper 5030 a signal space diversity (SSD) encoding block ( 5040, and a time interleaver 5050.
- SSD signal space diversity
- the data FEC encoder 5010 performs FEC encoding on the input BBF to generate the FECBLOCK procedure using outer coding (BCH) and inner coding (LDPC).
- Outer coding (BCH) is an optional coding method. The detailed operation of the data FEC encoder 5010 will be described later.
- the bit interleaver 5020 may interleave the output of the data FEC encoder 5010 while providing a structure that can be efficiently realized to achieve optimized performance by a combination of LDPC codes and modulation schemes. The detailed operation of the bit interleaver 5020 will be described later.
- Constellation mapper 5030 can be QPSK, QAM-16, non-uniform QAM (NUQ-64, NUQ-256, NUQ-1024) or non-uniform constellation (NUC-16, NUC-64, NUC-256, NUC-1024)
- NUQ-64, NUQ-256, NUQ-1024 non-uniform QAM
- NUC-16, NUC-64, NUC-256, NUC-1024 A constellation point whose power is normalized by modulating each cell word from the bit interleaver 5020 in the base and handheld profiles or the cell word from the cell word demultiplexer 5010-1 in the advanced profile. e l can be provided.
- the constellation mapping applies only to data pipes. It is observed that NUQ has any shape, while QAM-16 and NUQ have a square shape. If each constellation is rotated by a multiple of 90 degrees, the rotated constellation overlaps exactly with the original. Due to the rotational symmetry characteristic, the real and imaginary components have the same capacity and average power. Both NUQ and N
- the time interleaver 5050 may operate at the data pipe level.
- the parameters of time interleaving can be set differently for each data pipe. The specific operation of the time interleaver 5050 will be described later.
- the processing block 5000-1 of the BICM block for the advanced profile may include a data FEC encoder, a bit interleaver, a constellation mapper, and a time interleaver.
- the processing block 5000-1 is distinguished from the processing block 5000 in that it further includes a cell word demultiplexer 5010-1 and a MIMO encoding block 5020-1.
- operations of the data FEC encoder, the bit interleaver, the constellation mapper, and the time interleaver in the processing block 5000-1 may be performed by the data FEC encoder 5010, the bit interleaver 5020, and the constellation mapper 5030. Since this corresponds to the operation of the time interleaver 5050, the description thereof will be omitted.
- Cell word demultiplexer 5010-1 is used by an advanced profile data pipe to separate a single cell word stream into a dual cell word stream for MIMO processing. A detailed operation of the cell word demultiplexer 5010-1 will be described later.
- the MIMO encoding block 5020-1 may process the output of the cell word demultiplexer 5010-1 using the MIMO encoding scheme.
- MIMO encoding scheme is optimized for broadcast signal transmission. MIMO technology is a promising way to gain capacity, but depends on the channel characteristics. Especially for broadcast, the difference in received signal power between two antennas due to different signal propagation characteristics or the strong LOS component of the channel makes it difficult to obtain capacity gains from MIMO.
- the proposed MIMO encoding scheme overcomes this problem by using phase randomization and rotation based precoding of one of the MIMO output signals.
- MIMO encoding is intended for a 2x2 MIMO system that requires at least two antennas at both the transmitter and the receiver.
- Two MIMO encoding modes are defined in this proposal, full-rate spatial multiplexing (FR-SM) and full-rate full-diversity spatial multiplexing (FRFD-SM).
- FR-SM encoding provides increased capacity with a relatively small complexity increase at the receiver side, while FRFD-SM encoding provides increased capacity and additional diversity gain with a larger complexity increase at the receiver side.
- the proposed MIMO encoding scheme does not limit the antenna polarity arrangement.
- MIMO processing is required for the advanced profile frame, which means that all data pipes in the advanced profile frame are processed by the MIMO encoder. MIMO processing is applied at the data pipe level.
- the pair of constellation mapper outputs, NUQ (e 1, i and e 2, i ), are fed to the input of the MIMO encoder.
- MIMO encoder output pairs g1, i and g2, i are transmitted by the same carrier k and OFDM symbol l of each transmit antenna.
- FIG. 5 illustrates a BICM block according to another embodiment of the present invention.
- the BICM block illustrated in FIG. 5 corresponds to an embodiment of the BICM block 1010 described with reference to FIG. 1.
- the EAC is part of a frame carrying EAS information data
- the FIC is a logical channel in a frame carrying mapping information between a service and a corresponding base data pipe. Detailed description of the EAC and FIC will be described later.
- a BICM block for protecting PLS, EAC, and FIC may include a PLS FEC encoder 6000, a bit interleaver 6010, and a constellation mapper 6020.
- the PLS FEC encoder 6000 may include a scrambler, a BCH encoding / zero insertion block, an LDPC encoding block, and an LDPC parity puncturing block. Each block of the BICM block will be described.
- the PLS FEC encoder 6000 may encode scrambled PLS 1/2 data, EAC and FIC sections.
- the scrambler may scramble PLS1 data and PLS2 data before BCH encoding and shortening and punctured LDPC encoding.
- the BCH encoding / zero insertion block may perform outer encoding on the scrambled PLS 1/2 data using the shortened BCH code for PLS protection, and insert zero bits after BCH encoding. For PLS1 data only, the output bits of zero insertion can be permutated before LDPC encoding.
- the LDPC encoding block may encode the output of the BCH encoding / zero insertion block using the LDPC code.
- C ldpc and parity bits P ldpc are encoded systematically from each zero-inserted PLS information block I ldpc and appended after it.
- LDPC code parameters for PLS1 and PLS2 are shown in Table 4 below.
- the LDPC parity puncturing block may perform puncturing on the PLS1 data and the PLS2 data.
- LDPC parity bits are punctured after LDPC encoding.
- the LDPC parity bits of PLS2 are punctured after LDPC encoding. These punctured bits are not transmitted.
- the bit interleaver 6010 may interleave each shortened and punctured PLS1 data and PLS2 data.
- the constellation mapper 6020 may map bit interleaved PLS1 data and PLS2 data to constellations.
- FIG. 6 illustrates a frame building block according to an embodiment of the present invention.
- the frame building block illustrated in FIG. 7 corresponds to an embodiment of the frame building block 1020 described with reference to FIG. 1.
- the frame building block may include a delay compensation block 7000, a cell mapper 7010, and a frequency interleaver 7020. have. Each block of the frame building block will be described.
- the delay compensation block 7000 adjusts the timing between the data pipes and the corresponding PLS data to ensure co-time between the data pipes and the corresponding PLS data at the transmitter. have.
- PLS data is delayed by the data pipe.
- the delay of the BICM block is mainly due to the time interleaver 5050.
- In-band signaling data may cause information of the next time interleaving group to be delivered one frame ahead of the data pipe to be signaled.
- the delay compensation block delays the in-band signaling data accordingly.
- the cell mapper 7010 may map a PLS, an EAC, an FIC, a data pipe, an auxiliary stream, and a dummy cell to an active carrier of an OFDM symbol in a frame.
- the basic function of the cell mapper 7010 is to activate the data cells generated by time interleaving for each data pipe, PLS cell, and EAC / FIC cell, if any, corresponding to each OFDM symbol in one frame. (active) mapping to an array of OFDM cells.
- Service signaling data (such as program specific information (PSI) / SI) may be collected separately and sent by a data pipe.
- PSI program specific information
- SI program specific information
- the frequency interleaver 7020 may randomly interleave data cells received by the cell mapper 7010 to provide frequency diversity.
- the frequency interleaver 7020 may operate in an OFDM symbol pair consisting of two sequential OFDM symbols using different interleaving seed order to obtain the maximum interleaving gain in a single frame.
- FIG 7 illustrates an OFDM generation block according to an embodiment of the present invention.
- the OFDM generation block illustrated in FIG. 7 corresponds to an embodiment of the OFDM generation block 1030 described with reference to FIG. 1.
- the OFDM generation block modulates the OFDM carrier by inserting a pilot by the cell generated by the frame building block, inserts a pilot, and generates a time domain signal for transmission.
- the block sequentially inserts a guard interval and applies a PAPR reduction process to generate a final RF signal.
- the OFDM generation block includes a pilot and reserved tone insertion block (8000), a 2D-single frequency network (eSFN) encoding block 8010, an inverse fast fourier transform (IFFT).
- Block 8020 PAPR reduction block 8030, guard interval insertion block 8040, preamble insertion block 8050, other system insertion block 8060, and DAC block ( 8070).
- the other system insertion block 8060 may multiplex signals of a plurality of broadcast transmission / reception systems in a time domain so that data of two or more different broadcast transmission / reception systems providing a broadcast service may be simultaneously transmitted in the same RF signal band.
- two or more different broadcast transmission / reception systems refer to a system that provides different broadcast services.
- Different broadcast services may refer to terrestrial broadcast services or mobile broadcast services.
- FIG. 8 illustrates a structure of a broadcast signal receiving apparatus for a next generation broadcast service according to an embodiment of the present invention.
- the broadcast signal receiving apparatus for the next generation broadcast service may correspond to the broadcast signal transmitting apparatus for the next generation broadcast service described with reference to FIG. 1.
- An apparatus for receiving broadcast signals for a next generation broadcast service includes a synchronization & demodulation module 9000, a frame parsing module 9010, a demapping and decoding module a demapping & decoding module 9020, an output processor 9030, and a signaling decoding module 9040. The operation of each module of the broadcast signal receiving apparatus will be described.
- the synchronization and demodulation module 9000 receives an input signal through m reception antennas, performs signal detection and synchronization on a system corresponding to the broadcast signal receiving apparatus, and performs a reverse process of the procedure performed by the broadcast signal transmitting apparatus. Demodulation can be performed.
- the frame parsing module 9010 may parse an input signal frame and extract data in which a service selected by a user is transmitted.
- the frame parsing module 9010 may execute deinterleaving corresponding to the reverse process of interleaving. In this case, positions of signals and data to be extracted are obtained by decoding the data output from the signaling decoding module 9040, so that the scheduling information generated by the broadcast signal transmission apparatus may be restored.
- the demapping and decoding module 9020 may convert the input signal into bit region data and then deinterleave the bit region data as necessary.
- the demapping and decoding module 9020 can perform demapping on the mapping applied for transmission efficiency, and correct an error generated in the transmission channel through decoding. In this case, the demapping and decoding module 9020 can obtain transmission parameters necessary for demapping and decoding by decoding the data output from the signaling decoding module 9040.
- the output processor 9030 may perform a reverse process of various compression / signal processing procedures applied by the broadcast signal transmission apparatus to improve transmission efficiency.
- the output processor 9030 may obtain necessary control information from the data output from the signaling decoding module 9040.
- the output of the output processor 8300 corresponds to a signal input to the broadcast signal transmission apparatus and may be MPEG-TS, IP stream (v4 or v6), and GS.
- the signaling decoding module 9040 may obtain PLS information from the signal demodulated by the synchronization and demodulation module 9000. As described above, the frame parsing module 9010, the demapping and decoding module 9200, and the output processor 9300 may execute the function using data output from the signaling decoding module 9040.
- FIG. 9 shows a frame structure according to an embodiment of the present invention.
- FIG. 9 shows a structural example of a frame time and a frame repetition unit (FRU) in a super frame.
- (a) shows a super frame according to an embodiment of the present invention
- (b) shows a FRU according to an embodiment of the present invention
- (c) shows a frame of various physical profile (PHY profile) in the FRU
- (D) shows the structure of the frame.
- Super frame may consist of eight FRUs.
- the FRU is the basic multiplexing unit for the TDM of the frame and is repeated eight times in the super frame.
- Each frame in the FRU belongs to one of the physical profiles (base, handheld, advanced profile) or FEF.
- the maximum allowable number of frames in a FRU is 4, and a given physical profile may appear any number of times from 0 to 4 times in the FRU (eg, base, base, handheld, advanced).
- the physical profile definition may be extended using the reserved value of PHY_PROFILE in the preamble if necessary.
- the FEF portion is inserted at the end of the FRU if included. If the FEF is included in the FRU, the maximum number of FEFs is 8 in a super frame. It is not recommended that the FEF parts be adjacent to each other.
- One frame is further separated into multiple OFDM symbols and preambles. As shown in (d), the frame includes a preamble, one or more FSS, normal data symbols, and FES.
- the preamble is a special symbol that enables fast Futurecast UTB system signal detection and provides a set of basic transmission parameters for efficient transmission and reception of the signal. Details of the preamble will be described later.
- the main purpose of the FSS is to carry PLS data.
- the FSS For fast synchronization and channel estimation, and hence for fast decoding of PLS data, the FSS has a higher density pilot pattern than normal data symbols.
- the FES has a pilot that is exactly the same as the FSS, which allows frequency only interpolation and temporal interpolation within the FES without extrapolation for symbols immediately preceding the FES.
- FIG. 10 illustrates a signaling hierarchy structure of a frame according to an embodiment of the present invention.
- PLS 10 shows a signaling hierarchy, which is divided into three main parts: preamble signaling data 11000, PLS1 data 11010, and PLS2 data 11020.
- the purpose of the preamble carried by the preamble signal every frame is to indicate the basic transmission parameters and transmission type of the frame.
- PLS1 allows the receiver to access and decode PLS2 data that includes parameters for connecting to the data pipe of interest.
- PLS2 is delivered every frame and divided into two main parts, PLS2-STAT data and PLS2-DYN data. The static and dynamic parts of the PLS2 data are followed by padding if necessary.
- FIG 11 illustrates preamble signaling data according to an embodiment of the present invention.
- the preamble signaling data carries 21 bits of information needed to enable the receiver to access the PLS data and track the data pipes within the frame structure. Details of the preamble signaling data are as follows.
- PHY_PROFILE This 3-bit field indicates the physical profile type of the current frame. The mapping of different physical profile types is given in Table 5 below.
- FFT_SIZE This 2-bit field indicates the FFT size of the current frame in the frame group as described in Table 6 below.
- GI_FRACTION This 3-bit field indicates a guard interval fraction value in the current super frame as described in Table 7 below.
- EAC_FLAG This 1-bit field indicates whether EAC is provided in the current frame. If this field is set to 1, EAS is provided in the current frame. If this field is set to 0, EAS is not delivered in the current frame. This field may be converted to dynamic within a super frame.
- PILOT_MODE This 1-bit field indicates whether the pilot mode is a mobile mode or a fixed mode for the current frame in the current frame group. If this field is set to 0, mobile pilot mode is used. If the field is set to '1', fixed pilot mode is used.
- PAPR_FLAG This 1-bit field indicates whether PAPR reduction is used for the current frame in the current frame group. If this field is set to 1, tone reservation is used for PAPR reduction. If this field is set to 0, no PAPR reduction is used.
- This 3-bit field indicates the physical profile type configuration of the FRU present in the current super frame. In the corresponding field in all preambles in the current super frame, all profile types carried in the current super frame are identified. The 3-bit field is defined differently for each profile as shown in Table 8 below.
- PLS1 data provides basic transmission parameters including the parameters needed to enable the reception and decoding of PLS2. As mentioned above, the PLS1 data does not change during the entire duration of one frame group. A detailed definition of the signaling field of the PLS1 data is as follows.
- PREAMBLE_DATA This 20-bit field is a copy of the preamble signaling data excluding EAC_FLAG.
- NUM_FRAME_FRU This 2-bit field indicates the number of frames per FRU.
- PAYLOAD_TYPE This 3-bit field indicates the format of payload data carried in the frame group. PAYLOAD_TYPE is signaled as shown in Table 9.
- NUM_FSS This 2-bit field indicates the number of FSS in the current frame.
- SYSTEM_VERSION This 8-bit field indicates the version of the signal format being transmitted. SYSTEM_VERSION is separated into two 4-bit fields: major and minor.
- the 4-bit MSB in the SYSTEM_VERSION field indicates major version information. Changes in the major version field indicate incompatible changes. The default value is 0000. For the version described in that standard, the value is set to 0000.
- Minor Version A 4-bit LSB in the SYSTEM_VERSION field indicates minor version information. Changes in the minor version field are compatible.
- CELL_ID This is a 16-bit field that uniquely identifies a geographic cell in an ATSC network. ATSC cell coverage may consist of one or more frequencies depending on the number of frequencies used per Futurecast UTB system. If the value of CELL_ID is unknown or not specified, this field is set to zero.
- NETWORK_ID This is a 16-bit field that uniquely identifies the current ATSC network.
- SYSTEM_ID This 16-bit field uniquely identifies a Futurecast UTB system within an ATSC network.
- Futurecast UTB systems are terrestrial broadcast systems whose input is one or more input streams (TS, IP, GS) and the output is an RF signal.
- the Futurecast UTB system conveys the FEF and one or more physical profiles, if present.
- the same Futurecast UTB system can carry different input streams and use different RFs in different geographic regions, allowing for local service insertion.
- Frame structure and scheduling are controlled in one place and are the same for all transmissions within a Futurecast UTB system.
- One or more Futurecast UTB systems may have the same SYSTEM_ID meaning that they all have the same physical structure and configuration.
- the following loop is composed of FRU_PHY_PROFILE, FRU_FRAME_LENGTH, FRU_GI_FRACTION, and RESERVED indicating the length and FRU configuration of each frame type.
- the loop size is fixed such that four physical profiles (including FFEs) are signaled within the FRU. If NUM_FRAME_FRU is less than 4, the unused fields are filled with zeros.
- FRU_PHY_PROFILE This 3-bit field indicates the physical profile type of the (i + 1) th frame (i is a loop index) of the associated FRU. This field uses the same signaling format as shown in Table 8.
- FRU_FRAME_LENGTH This 2-bit field indicates the length of the (i + 1) th frame of the associated FRU. Using FRU_FRAME_LENGTH with FRU_GI_FRACTION, the exact value of frame duration can be obtained.
- FRU_GI_FRACTION This 3-bit field indicates the guard interval partial value of the (i + 1) th frame of the associated FRU.
- FRU_GI_FRACTION is signaled according to Table 7.
- the following fields provide parameters for decoding PLS2 data.
- PLS2_FEC_TYPE This 2-bit field indicates the FEC type used by the PLS2 protection.
- the FEC type is signaled according to Table 10. Details of the LDPC code will be described later.
- PLS2_MOD This 3-bit field indicates the modulation type used by PLS2.
- the modulation type is signaled according to Table 11.
- PLS2_SIZE_CELL This 15-bit field indicates C total_partial_block which is the size (specified by the number of QAM cells) of all coding blocks for PLS2 carried in the current frame group . This value is constant for the entire duration of the current frame-group.
- PLS2_STAT_SIZE_BIT This 14-bit field indicates the size, in bits, of the PLS2-STAT for the current frame-group. This value is constant for the entire duration of the current frame-group.
- PLS2_DYN_SIZE_BIT This 14-bit field indicates the size, in bits, of the PLS2-DYN for the current frame-group. This value is constant for the entire duration of the current frame-group.
- PLS2_REP_FLAG This 1-bit flag indicates whether the PLS2 repeat mode is used in the current frame group. If the value of this field is set to 1, PLS2 repeat mode is activated. If the value of this field is set to 0, PLS2 repeat mode is deactivated.
- PLS2_REP_SIZE_CELL This 15-bit field indicates C total_partial_block , which is the size (specified by the number of QAM cells) of the partial coding block for PLS2 delivered every frame of the current frame group when PLS2 repetition is used. If iteration is not used, the value of this field is equal to zero. This value is constant for the entire duration of the current frame-group.
- PLS2_NEXT_FEC_TYPE This 2-bit field indicates the FEC type used for PLS2 delivered in every frame of the next frame-group.
- the FEC type is signaled according to Table 10.
- PLS2_NEXT_MOD This 3-bit field indicates the modulation type used for PLS2 delivered in every frame of the next frame-group.
- the modulation type is signaled according to Table 11.
- PLS2_NEXT_REP_FLAG This 1-bit flag indicates whether the PLS2 repeat mode is used in the next frame group. If the value of this field is set to 1, PLS2 repeat mode is activated. If the value of this field is set to 0, PLS2 repeat mode is deactivated.
- PLS2_NEXT_REP_SIZE_CELL This 15-bit field indicates C total_full_block , which is the size (specified in the number of QAM cells) of the entire coding block for PLS2 delivered every frame of the next frame-group when PLS2 repetition is used. If iteration is not used in the next frame-group, the value of this field is equal to zero. This value is constant for the entire duration of the current frame-group.
- PLS2_NEXT_REP_STAT_SIZE_BIT This 14-bit field indicates the size, in bits, of the PLS2-STAT for the next frame-group. The value is constant in the current frame group.
- PLS2_NEXT_REP_DYN_SIZE_BIT This 14-bit field indicates the size of the PLS2-DYN for the next frame-group, in bits. The value is constant in the current frame group.
- PLS2_AP_MODE This 2-bit field indicates whether additional parity is provided for PLS2 in the current frame group. This value is constant for the entire duration of the current frame-group. Table 12 below provides the values for this field. If the value of this field is set to 00, no additional parity is used for PLS2 in the current frame group.
- PLS2_AP_SIZE_CELL This 15-bit field indicates the size (specified by the number of QAM cells) of additional parity bits of PLS2. This value is constant for the entire duration of the current frame-group.
- PLS2_NEXT_AP_MODE This 2-bit field indicates whether additional parity is provided for PLS2 signaling for every frame of the next frame-group. This value is constant for the entire duration of the current frame-group. Table 12 defines the values of this field.
- PLS2_NEXT_AP_SIZE_CELL This 15-bit field indicates the size (specified by the number of QAM cells) of additional parity bits of PLS2 for every frame of the next frame-group. This value is constant for the entire duration of the current frame-group.
- RESERVED This 32-bit field is reserved for future use.
- FIG 13 illustrates PLS2 data according to an embodiment of the present invention.
- PLS2-STAT data of the PLS2 data.
- PLS2-STAT data is the same within a frame group, while PLS2-DYN data provides specific information about the current frame.
- FIC_FLAG This 1-bit field indicates whether the FIC is used in the current frame group. If the value of this field is set to 1, the FIC is provided in the current frame. If the value of this field is set to 0, FIC is not delivered in the current frame. This value is constant for the entire duration of the current frame-group.
- AUX_FLAG This 1-bit field indicates whether the auxiliary stream is used in the current frame group. If the value of this field is set to 1, the auxiliary stream is provided in the current frame. If the value of this field is set to 0, the auxiliary frame is not transmitted in the current frame. This value is constant for the entire duration of the current frame-group.
- NUM_DP This 6-bit field indicates the number of data pipes carried in the current frame. The value of this field is between 1 and 64, and the number of data pipes is NUM_DP + 1.
- DP_ID This 6-bit field uniquely identifies within the physical profile.
- DP_TYPE This 3-bit field indicates the type of data pipe. This is signaled according to Table 13 below.
- DP_GROUP_ID This 8-bit field identifies the data pipe group with which the current data pipe is associated. This can be used to connect to the data pipe of the service component associated with a particular service that the receiver will have the same DP_GROUP_ID.
- BASE_DP_ID This 6-bit field indicates a data pipe that carries service signaling data (such as PSI / SI) used in the management layer.
- the data pipe indicated by BASE_DP_ID may be a normal data pipe for delivering service signaling data together with service data or a dedicated data pipe for delivering only service signaling data.
- DP_FEC_TYPE This 2-bit field indicates the FEC type used by the associated data pipe.
- the FEC type is signaled according to Table 14 below.
- DP_COD This 4-bit field indicates the code rate used by the associated data pipe.
- the code rate is signaled according to Table 15 below.
- DP_MOD This 4-bit field indicates the modulation used by the associated data pipe. Modulation is signaled according to Table 16 below.
- DP_SSD_FLAG This 1-bit field indicates whether the SSD mode is used in the associated data pipe. If the value of this field is set to 1, the SSD is used. If the value of this field is set to 0, the SSD is not used.
- DP_MIMO This 3-bit field indicates what type of MIMO encoding processing is applied to the associated data pipe.
- the type of MIMO encoding process is signaled according to Table 17 below.
- DP_TI_TYPE This 1-bit field indicates the type of time interleaving. A value of 0 indicates that one time interleaving group corresponds to one frame and includes one or more time interleaving blocks. A value of 1 indicates that one time interleaving group is delivered in more than one frame and contains only one time interleaving block.
- DP_TI_LENGTH The use of this 2-bit field (only allowed values are 1, 2, 4, 8) is determined by the value set in the DP_TI_TYPE field as follows.
- N TI the number of time interleaving block per time interleaving group
- This 2-bit field represents the frame interval (I JUMP ) within the frame group for the associated data pipe, and allowed values are 1, 2, 4, 8 (the corresponding 2-bit fields are 00, 01, 10, 11). For data pipes that do not appear in every frame of a frame group, the value of this field is equal to the interval between sequential frames. For example, if a data pipe appears in frames 1, 5, 9, 13, etc., the value of this field is set to 4. For data pipes that appear in every frame, the value of this field is set to 1.
- DP_TI_BYPASS This 1-bit field determines the availability of time interleaver 5050. If time interleaving is not used for the data pipe, this field value is set to 1. On the other hand, if time interleaving is used, the corresponding field value is set to zero.
- DP_FIRST_FRAME_IDX This 5-bit field indicates the index of the first frame of the super frame in which the current data pipe occurs.
- the value of DP_FIRST_FRAME_IDX is between 0 and 31.
- DP_NUM_BLOCK_MAX This 10-bit field indicates the maximum value of DP_NUM_BLOCKS for the data pipe. The value of this field has the same range as DP_NUM_BLOCKS.
- DP_PAYLOAD_TYPE This 2-bit field indicates the type of payload data carried by a given data pipe. DP_PAYLOAD_TYPE is signaled according to Table 19 below.
- DP_INBAND_MODE This 2-bit field indicates whether the current data pipe carries in-band signaling information. In-band signaling type is signaled according to Table 20 below.
- DP_PROTOCOL_TYPE This 2-bit field indicates the protocol type of the payload carried by the given data pipe.
- the protocol type of payload is signaled according to Table 21 below when the input payload type is selected.
- DP_CRC_MODE This 2-bit field indicates whether CRC encoding is used in the input format block. CRC mode is signaled according to Table 22 below.
- DNP_MODE This 2-bit field indicates the null packet deletion mode used by the associated data pipe when DP_PAYLOAD_TYPE is set to TS ('00'). DNP_MODE is signaled according to Table 23 below. If DP_PAYLOAD_TYPE is not TS ('00'), DNP_MODE is set to a value of 00.
- ISSY_MODE This 2-bit field indicates the ISSY mode used by the associated data pipe when DP_PAYLOAD_TYPE is set to TS ('00'). ISSY_MODE is signaled according to Table 24 below. If DP_PAYLOAD_TYPE is not TS ('00'), ISSY_MODE is set to a value of 00.
- HC_MODE_TS This 2-bit field indicates the TS header compression mode used by the associated data pipe when DP_PAYLOAD_TYPE is set to TS ('00'). HC_MODE_TS is signaled according to Table 25 below.
- HC_MODE_IP This 2-bit field indicates the IP header compression mode when DP_PAYLOAD_TYPE is set to IP ('01'). HC_MODE_IP is signaled according to Table 26 below.
- PID This 13-bit field indicates the number of PIDs for TS header compression when DP_PAYLOAD_TYPE is set to TS ('00') and HC_MODE_TS is set to 01 or 10.
- FIC_VERSION This 8-bit field indicates the version number of the FIC.
- FIC_LENGTH_BYTE This 13-bit field indicates the length of the FIC in bytes.
- NUM_AUX This 4-bit field indicates the number of auxiliary streams. Zero indicates that no auxiliary stream is used.
- AUX_CONFIG_RFU This 8-bit field is reserved for future use.
- AUX_STREAM_TYPE This 4 bits is reserved for future use to indicate the type of the current auxiliary stream.
- AUX_PRIVATE_CONFIG This 28-bit field is reserved for future use for signaling the secondary stream.
- FIG 14 illustrates PLS2 data according to another embodiment of the present invention.
- the value of the PLS2-DYN data may change during the duration of one frame group, while the size of the field is constant.
- FRAME_INDEX This 5-bit field indicates the frame index of the current frame within the super frame. The index of the first frame of the super frame is set to zero.
- PLS_CHANGE_COUNTER This 4-bit field indicates the number of super frames before the configuration changes. The next super frame whose configuration changes is indicated by the value signaled in that field. If the value of this field is set to 0000, this means that no scheduled change is expected. For example, a value of 1 indicates that there is a change in the next super frame.
- FIC_CHANGE_COUNTER This 4-bit field indicates the number of super frames before the configuration (i.e., the content of the FIC) changes. The next super frame whose configuration changes is indicated by the value signaled in that field. If the value of this field is set to 0000, this means that no scheduled change is expected. For example, a value of 0001 indicates that there is a change in the next super frame.
- NUM_DP NUM_DP that describes the parameters related to the data pipe carried in the current frame.
- DP_ID This 6-bit field uniquely represents a data pipe within the physical profile.
- DP_START This 15-bit (or 13-bit) field indicates the first starting position of the data pipe using the DPU addressing technique.
- the DP_START field has a length different according to the physical profile and the FFT size as shown in Table 27 below.
- DP_NUM_BLOCK This 10-bit field indicates the number of FEC blocks in the current time interleaving group for the current data pipe.
- the value of DP_NUM_BLOCK is between 0 and 1023.
- the next field indicates the FIC parameter associated with the EAC.
- EAC_FLAG This 1-bit field indicates the presence of an EAC in the current frame. This bit is equal to EAC_FLAG in the preamble.
- EAS_WAKE_UP_VERSION_NUM This 8-bit field indicates the version number of the automatic activation indication.
- EAC_FLAG field If the EAC_FLAG field is equal to 1, the next 12 bits are allocated to the EAC_LENGTH_BYTE field. If the EAC_FLAG field is equal to 0, the next 12 bits are allocated to EAC_COUNTER.
- EAC_LENGTH_BYTE This 12-bit field indicates the length of the EAC in bytes.
- EAC_COUNTER This 12-bit field indicates the number of frames before the frame in which the EAC arrives.
- AUX_PRIVATE_DYN This 48-bit field is reserved for future use for signaling the secondary stream. The meaning of this field depends on the value of AUX_STREAM_TYPE in configurable PLS2-STAT.
- CRC_32 32-bit error detection code that applies to the entire PLS2.
- FIG. 15 illustrates a logical structure of a frame according to an embodiment of the present invention.
- the PLS, EAC, FIC, data pipe, auxiliary stream, and dummy cell are mapped to the active carrier of the OFDM symbol in the frame.
- PLS1 and PLS2 are initially mapped to one or more FSS. Then, if there is an EAC, the EAC cell is mapped to the immediately following PLS field. If there is an FIC next, the FIC cell is mapped.
- the data pipes are mapped after the PLS or, if present, after the EAC or FIC. Type 1 data pipes are mapped first, and type 2 data pipes are mapped next. Details of the type of data pipe will be described later. In some cases, the data pipe may carry some special data or service signaling data for the EAS.
- auxiliary stream or stream if present, is mapped to the data pipe next, followed by a dummy cell in turn. Mapping all together in the order described above, namely PLS, EAC, FIC, data pipe, auxiliary stream, and dummy cell, will correctly fill the cell capacity in the frame.
- FIG 16 illustrates PLS mapping according to an embodiment of the present invention.
- the PLS cell is mapped to an active carrier of the FSS. According to the number of cells occupied by the PLS, one or more symbols are designated as FSS, and the number N FSS of the FSS is signaled by NUM_FSS in PLS1.
- FSS is a special symbol that carries a PLS cell. Since alertness and latency are critical issues in PLS, the FSS has a high pilot density, enabling fast synchronization and interpolation only on frequencies within the FSS.
- the PLS cell is mapped to an active carrier of the FSS from the top down as shown in the example of FIG.
- PLS1 cells are initially mapped in ascending order of cell index from the first cell of the first FSS.
- the PLS2 cell follows immediately after the last cell of PLS1 and the mapping continues downward until the last cell index of the first FSS. If the total number of required PLS cells exceeds the number of active carriers of one FSS, the mapping proceeds to the next FSS and continues in exactly the same way as the first FSS.
- EAC, FIC or both are present in the current frame, EAC and FIC are placed between the PLS and the normal data pipe.
- FIG 17 illustrates EAC mapping according to an embodiment of the present invention.
- the EAC is a dedicated channel for delivering EAS messages and is connected to the data pipes for the EAS. EAS support is provided, but the EAC itself may or may not be present in every frame. If there is an EAC, the EAC is mapped immediately after the PLS2 cell. Except for PLS cells, none of the FIC, data pipes, auxiliary streams or dummy cells are located before the EAC. The mapping procedure of the EAC cell is exactly the same as that of the PLS.
- EAC cells are mapped in ascending order of cell index from the next cell of PLS2 as shown in the example of FIG. Depending on the EAS message size, as shown in FIG. 17, the EAC cell may occupy few symbols.
- the EAC cell follows immediately after the last cell of PLS2 and the mapping continues downward until the last cell index of the last FSS. If the total number of required EAC cells exceeds the number of remaining active carriers of the last FSS, the EAC mapping proceeds to the next symbol and continues in exactly the same way as the FSS. In this case, the next symbol to which the EAC is mapped is a normal data symbol, which has more active carriers than the FSS.
- the FIC is passed next if present. If no FIC is sent (as signaling in the PLS2 field), the data pipe follows immediately after the last cell of the EAC.
- FIC is a dedicated channel that carries cross-layer information to enable fast service acquisition and channel scan.
- the information mainly includes channel binding information between data pipes and services of each broadcaster.
- the receiver can decode the FIC and obtain information such as broadcaster ID, number of services, and BASE_DP_ID.
- BASE_DP_ID For high-speed service acquisition, not only the FIC but also the base data pipe can be decoded using BASE_DP_ID. Except for the content that the base data pipe transmits, the base data pipe is encoded and mapped to the frame in exactly the same way as a normal data pipe. Thus, no further explanation of the base data pipe is needed.
- FIC data is generated and consumed at the management layer. The content of the FIC data is as described in the management layer specification.
- FIC data is optional and the use of FIC is signaled by the FIC_FLAG parameter in the static part of the PLS2. If FIC is used, FIC_FLAG is set to 1 and the signaling field for FIC is defined in the static part of PLS2. Signaled in this field is FIC_VERSION, FIC_LENGTH_BYTE. FIC uses the same modulation, coding, and time interleaving parameters as PLS2. The FIC shares the same signaling parameters as PLS2_MOD and PLS2_FEC. FIC data is mapped after PLS2 if present, or immediately after EAC if EAC is present. None of the normal data pipes, auxiliary streams, or dummy cells are located before the FIC. The method of mapping the FIC cells is exactly the same as the EAC, which in turn is identical to the PLS.
- the FIC cells are mapped in ascending order of cell index from the next cell of PLS2 as shown in the example of (a).
- FIC cells are mapped for several symbols.
- the FIC cell follows immediately after the last cell of PLS2 and the mapping continues downward until the last cell index of the last FSS. If the total number of required FIC cells exceeds the number of remaining active carriers of the last FSS, the mapping of the remaining FIC cells proceeds to the next symbol, which continues in exactly the same way as the FSS. In this case, the next symbol to which the FIC is mapped is a normal data symbol, which has more active carriers than the FSS.
- the EAC is mapped before the FIC and the FIC cells are mapped in ascending order of cell index from the next cell of the EAC as shown in (b).
- one or more data pipes are mapped, followed by auxiliary streams and dummy cells if present.
- FIG 19 shows an FEC structure according to an embodiment of the present invention.
- the data FEC encoder may perform FEC encoding on the input BBF to generate the FECBLOCK procedure using outer coding (BCH) and inner coding (LDPC).
- BCH outer coding
- LDPC inner coding
- the illustrated FEC structure corresponds to FECBLOCK.
- the FECBLOCK and FEC structures have the same value corresponding to the length of the LDPC codeword.
- N ldpc 64800 bits (long FECBLOCK) or 16200 bits (short FECBLOCK).
- Tables 28 and 29 below show the FEC encoding parameters for the long FECBLOCK and the short FECBLOCK, respectively.
- a 12-error correcting BCH code is used for the outer encoding of the BBF.
- the BBF-generated polynomials for short FECBLOCK and long FECBLOCK are obtained by multiplying all polynomials.
- LDPC codes are used to encode the output of the outer BCH encoding.
- ldpc P parity bits
- I ldpc - is systematically encoded from the (BCH encoded BBF), it is attached to the I ldpc.
- the finished B ldpc (FECBLOCK) is expressed by the following equation.
- N ldpc for long FECBLOCK - specific procedures for calculating the K ldpc parity bits is as follows.
- x represents the address of the parity bit accumulator corresponding to the first bit i 0
- Q ldpc is a code rate dependent constant specified in the address of the parity check matrix.
- Equation 6 x represents the address of the parity bit accumulator corresponding to information bit i 360 , that is, the entry of the second row of the parity check matrix.
- the final parity bits are obtained as follows.
- the corresponding LDPC encoding procedure for short FECBLOCK is t LDPC for long FECBLOCK.
- the time interleaver operates at the data pipe level.
- the parameters of time interleaving can be set differently for each data pipe.
- DP_TI_TYPE (allowed values: 0 or 1): Represents the time interleaving mode.
- 0 indicates a mode with multiple time interleaving blocks (one or more time interleaving blocks) per time interleaving group. In this case, one time interleaving group is directly mapped to one frame (without interframe interleaving).
- 1 indicates a mode having only one time interleaving block per time interleaving group. In this case, the time interleaving block is spread over one or more frames (interframe interleaving).
- DP_NUM_BLOCK_MAX (allowed values: 0 to 1023): Represents the maximum number of XFECBLOCKs per time interleaving group.
- DP_FRAME_INTERVAL (allowed values: 1, 2, 4, 8): Represents the number of frames I JUMP between two sequential frames carrying the same data pipe of a given physical profile.
- DP_TI_BYPASS (allowed values: 0 or 1): If time interleaving is not used for the data frame, this parameter is set to one. If time interleaving is used, it is set to zero.
- the parameter DP_NUM_BLOCK from the PLS2-DYN data indicates the number of XFECBLOCKs carried by one time interleaving group of the data group.
- each time interleaving group is a set of integer number of XFECBLOCKs, and will contain a dynamically varying number of XFECBLOCKs.
- N xBLOCK_Group (n) The number of XFECBLOCKs in the time interleaving group at index n is represented by N xBLOCK_Group (n) and signaled as DP_NUM_BLOCK in the PLS2-DYN data.
- N xBLOCK_Group (n) may vary from the minimum value 0 to the maximum value N xBLOCK_Group_MAX (corresponding to DP_NUM_BLOCK_MAX ) having the largest value 1023.
- Each time interleaving group is either mapped directly to one frame or spread over P I frames.
- Each time interleaving group is further divided into one or more (N TI ) time interleaving blocks.
- each time interleaving block corresponds to one use of the time interleaver memory.
- the time interleaving block in the time interleaving group may include some other number of XFECBLOCKs. If the time interleaving group is divided into multiple time interleaving blocks, the time interleaving group is directly mapped to only one frame. As shown in Table 32 below, there are three options for time interleaving (except for the additional option of omitting time interleaving).
- the time interleaver will also act as a buffer for the data pipe data before the frame generation process. This is accomplished with two memory banks for each data pipe.
- the first time interleaving block is written to the first bank.
- the second time interleaving block is written to the second bank while reading from the first bank.
- Time interleaving is a twisted row-column block interleaver.
- the number of columns N c is equal to N xBLOCK_TI (n, s)
- 21 illustrates the basic operation of a twisted row-column block interleaver according to an embodiment of the present invention.
- Fig. 21A shows a write operation in the time interleaver
- Fig. 21B shows a read operation in the time interleaver.
- the first XFECBLOCK is written in the column direction to the first column of the time interleaving memory
- the second XFECBLOCK is written to the next column, followed by this operation.
- the cells are read diagonally.
- Cells are read. Specifically, Assuming that this is a time interleaving memory cell position to be read sequentially, the read operation in this interleaving array is a row index as in the equation below. Column index Related twist parameters Is executed by calculating.
- the cell position to be read is coordinate Calculated by
- FIG. 22 illustrates an operation of a twisted row-column block interleaver according to another embodiment of the present invention.
- FIG. 22 Denotes an interleaving array in the time interleaving memory for each time interleaving group including the virtual XFECBLOCK.
- the interleaving array for twisted row-column block interleaver inserts a virtual XFECBLOCK into the time interleaving memory. It is set to the size of, and the reading process is made as follows.
- the number of time interleaving groups is set to three.
- the maximum number of XFECBLOCKs is signaled in PLS2-STAT data by NxBLOCK_Group_MAX, which Leads to.
- Figure 23 illustrates a diagonal read pattern of a twisted row-column block interleaver according to one embodiment of the present invention.
- FIG. 25 illustrates signaling for single memory deinterleaving not affected by the number of symbols in a frame according to an embodiment of the present invention.
- the frequency interleaver according to the present invention performs interleaving using different interleaving sequences for each OFDM symbol, but the frequency deinterleaver may perform single memory deinterleaving on the received OFDM symbol.
- the present invention proposes a method in which a frequency deinterleaver can perform single memory deinterleaving regardless of whether the number of OFDM symbols in a frame is even or odd.
- the above-described structure of the frequency interleaver may operate differently depending on whether the number of OFDM symbols is even or odd.
- signaling information related thereto may be further defined in the aforementioned preamble and / or PLS (Physical Layer Signaling).
- PLS Physical Layer Signaling
- the PLS may be included in the frame starting symbol (FSS) of each frame and transmitted.
- the PLS may be included in the first OFDM symbol and transmitted.
- signaling corresponding to the PLS may be included in the preamble and transmitted.
- signaling information corresponding to the preamble and / or the PLS may be included in the bootstrap information and transmitted.
- the bootstrap information may be an information part located in front of the preamble.
- FI_mode field As information on a processing operation used in the frequency interleaver of the transmitter, there may be a FI_mode field and an N_sym field.
- the FI_mode field may be a 1-bit field that may be located in the preamble.
- the FI_mode field may indicate an interleaving scheme used for the frame starting symbol (FSS) or the first OFDM symbol of each frame.
- Interleaving schemes indicated by the FI_mode field may include FI scheme # 1 and FI scheme # 2.
- FI scheme # 1 may refer to a case in which the frequency interleaver performs a linear reading operation on the FSS after performing a random writing operation on the FSS. This case may correspond to a case where the FI_mode field value is 0.
- random write and linear read operations may be performed in the memory.
- the linear read may mean an operation of sequentially reading.
- FI scheme # 2 may mean a case in which the frequency interleaver performs a random reading operation after performing a linear writing operation on the FSS at the transmitting side. This case may correspond to a case where the FI_mode field value is 1. Similarly, linear write and random read operations can be performed in a memory using values generated by an arbitrary random sequence generator using PRBS. In this case, the linear writing may mean performing a writing operation sequentially.
- the FI_mode field may indicate an interleaving scheme used for the frame edge symbol (FES) or the last OFDM symbol of each frame.
- the interleaving scheme applied to the FES may be indicated differently according to the value of the N_sym field transmitted by the PLS. That is, the interleaving scheme indicated by the FI_mode field may vary depending on whether the number of OFDM symbols is odd or even.
- the relationship between the two fields may be previously defined as a table on the transmitting and receiving side.
- the FI_mode field may be defined and transmitted in another part of the frame in addition to the preamble.
- the N_sym field may be a field that may be located in the PLS part.
- the number of bits of the N_sym field may vary according to an embodiment.
- the N_sym field may indicate the number of OFDM symbols included in one frame. Accordingly, the receiving side can determine whether the number of OFDM symbols is even or odd.
- the operation of the frequency deinterleaver corresponding to the frequency interleaver irrespective of the number of OFDM symbols in one frame described above is as follows.
- the frequency deinterleaver may perform single memory deinterleaving using the proposed signaling fields regardless of whether the number of OFDM symbols is even or odd.
- the frequency deinterleaver may perform frequency deinterleaving on the FSS using information of the FI_mode field of the preamble. This is because the frequency interleaving scheme utilized for the FSS is indicated by FI_mode.
- the frequency deinterleaver may perform frequency deinterleaving on the FES using signaling information of the FI_mode field and signaling information of the N_sym field of the PLS. At this time, the relationship between the two fields may be grasped using a predefined table.
- the predefined table will be described later.
- the overall deinterleaving process of the other symbols may be performed in the reverse order of the interleaving process of the transmitter. That is, the frequency deinterleaver may perform deinterleaving by using one interleaving sequence with respect to a pair of input OFDM symbols.
- one interleaving sequence may be an interleaving sequence used by the corresponding frequency interleaver for reading and writing.
- the frequency deinterleaver may perform the read & write process in reverse order using the interleaving sequence.
- the frequency deinterleaver according to the present invention may not use a ping pong structure using a double memory.
- the frequency deinterleaver may perform deinterleaving using a single memory for successive input OFDM symbols. This can increase the memory usage efficiency of the frequency deinterleaver.
- FIG. 26 is a diagram illustrating FI schemes for FSS in signaling for single memory deinterleaving not affected by the number of symbols in a frame according to an embodiment of the present invention.
- An interleaving scheme applied in the frequency interleaving process may be determined using the aforementioned FI_mode field and the N_sym field.
- FI scheme # 1 may be performed on the FSS regardless of the FI_mode field value.
- FI scheme # 1 When the number of OFDM symbols indicated by the N_sym field is odd, if the FI_mode field has a value of 0, FI scheme # 1 is applied to the FSS, and if it has a value of 1, FI scheme # 2 may be applied to the FSS. That is, when the number of OFDM symbols is odd, FI schemes # 1 and # 2 may be alternately applied to the FSS in frequency interleaving.
- FIG. 27 illustrates an operation of a reset mode for FES in signaling for single memory deinterleaving that is not affected by the number of symbols in a frame according to an embodiment of the present invention.
- the aforementioned symbol offset generator may introduce a new concept called a reset mode.
- the reset mode may mean a mode in which a symbol offset value generated by the symbol offset generator is '0'.
- the reset mode of the symbol offset generator may not be operated regardless of the value of the FI_mode field.
- the symbol offset generator may operate according to the reset mode (on).
- the reset mode of the symbol offset generator may not operate. That is, when the number of OFDM symbols is an odd number, the reset mode may be alternately turned on / off in frequency interleaving.
- FIG. 28 is a diagram for mathematically representing an input and an output of a frequency interleaver in signaling for single memory deinterleaving not affected by the number of symbols in a frame according to an embodiment of the present invention.
- interleaving may utilize a variety of other interleaving seeds generated by one main interleaving seed being cyclic-shifted.
- the interleaving seed may be referred to as an interleaving sequence.
- the interleaving seed may be referred to as an interleaving address value, an address value, or an interleaving address.
- the term interleaving address value may be used to indicate a plurality of objects in the meaning of a set of a plurality of address values, or may be used to indicate a singular object in the meaning of an interleaving seed. That is, according to the embodiment, the interleaving address value may mean each address value of H (p) or may mean H (p) itself.
- An input of frequency interleaving to be interleaved in one OFDM symbol may be denoted by O m, l (t50010).
- each of the data cells may be represented by x m, l, 0 ,... X m, l, Ndata-1 .
- p may mean a cell index
- l may mean an OFDM symbol index
- m may mean an index of a frame. That is, x m, l, p may refer to the p th data cell of the m th frame, the l th OFDM symbol.
- N data may mean the number of data cells.
- N sym may mean the number of symbols (frame signaling symbol, normal data symbol, frame edge symbol).
- Data cells after interleaving by the above operation may be denoted by P m, l (t50020).
- Each interleaved data cell may be denoted by v m, l, 0 ,... V m, l, Ndata-1 .
- p, l, m may have the same index value as described above.
- 29 is a view illustrating equations of a logical operation mechanism of frequency interleaving according to FI scheme # 1 and FI scheme # 2 in signaling for single memory deinterleaving that is not affected by the number of symbols in a frame according to an embodiment of the present invention. Indicates.
- frequency interleaving may be performed using an interleaving sequence (interleaving address) of each memory bank.
- frequency interleaving may be performed using an interleaving sequence (interleaving address) to obtain an output v.
- the p th input data x may be mixed in order to be equal to the H (p) th output data v.
- a random write process may be performed first using an interleaving sequence, and then a linear read process may be sequentially read again.
- the interleaving sequence (interleaving address) may be a value generated by an arbitrary random sequence generator using PRBS.
- frequency interleaving may be performed using an interleaving sequence (interleaving address) to obtain an output v.
- the H (p) th input data x may be mixed in order to be equal to the pth output data v. That is, when compared to the interleaving process for even-numbered symbols, the interleaving sequence (interleaving address) may be applied inversely (inversely, inverse).
- a linear write operation of writing data to a memory in order may be performed first, and then a random read process may be performed to read randomly using an interleaving sequence.
- the interleaving sequence (interleaving address) may be a value generated by any random sequence generator using PRBS or the like.
- a random read operation may be performed after the linear write operation with respect to the even number symbol according to the illustrated equation (t51020).
- a linear read operation may be performed after the random write operation according to the equation (t51010). Details are the same as described in FI Scheme # 1.
- Symbol index l is 0, 1, ..., N sym -1
- cell index p is 0, 1, ..., N data -1 It can be expressed as.
- frequency interleaving schemes for even-numbered symbols and odd-numbered symbols may be reversed.
- frequency interleaving schemes according to FI scheme # 1 and FI scheme # 2 may be reversed.
- FIG. 30 is a diagram illustrating an embodiment in which the number of symbols is even in signaling for single memory deinterleaving that is not affected by the number of symbols in a frame according to an embodiment of the present invention.
- the N_sym field may indicate that the number of OFDM is even in one frame. In this embodiment, it is assumed that one frame has one preamble and eight OFDM symbols.
- the bootstrap information may be further included in front of the preamble. Bootstrap information is not shown.
- one frame may include one FSS and FES, respectively. It is assumed here that the lengths of the FSS and the FES are the same.
- the frequency deinterleaver may check this after FSS decoding.
- decoding for the N_sym field is completed before the operation for FES is performed.
- the value of the symbol offset generator can be reset to zero.
- each first and second symbol can be processed by the same interleaving sequence.
- the sequence # 0 may be used for operation again at the beginning of each frame.
- the sequence # 1 and # 2 may be used to operate the frequency interleaver / deinterleaver.
- 31 is a diagram illustrating an embodiment in which the number of symbols is even in signaling for single memory deinterleaving not affected by the number of symbols in a frame according to an embodiment of the present invention.
- the FSS In the first frame, information on how the FSS is interleaved can be obtained from the FI_mode field of the preamble. In this embodiment, since the OFDM symbols are even, only FI scheme # 1 may be used.
- the FSS may be decoded to obtain N_sym information. It can be seen from the N_sym information that the number of symbols in the frame is even. Thereafter, when the frequency deinterleaver decodes the FES, decoding may be performed using the obtained FI_mode information and N_sym information. Since the number of symbols is an even number, the symbol offset generator does not operate according to the above-described reset mode. That is, the reset mode may be in an off state.
- the frequency deinterleaver may operate in the same manner. That is, the FI scheme to be used in the FSS is FI scheme # 1, and the reset mode to be used in the FES may be in an off state.
- 32 is a diagram illustrating an embodiment in which the number of symbols is odd in signaling for single memory deinterleaving not affected by the number of symbols in a frame according to an embodiment of the present invention.
- the N_sym field may indicate that the number of OFDM is odd in one frame. In this embodiment, it is assumed that one frame has one preamble and seven OFDM symbols.
- the bootstrap information may be further included in front of the preamble. Bootstrap information is not shown.
- one frame may include one FSS and FES, respectively. It is assumed here that the lengths of the FSS and the FES are the same.
- the frequency deinterleaver since the information of the N_sym field is included in the PLS part and transmitted, the frequency deinterleaver may check this after FSS decoding. In addition, in the present embodiment, it is assumed that decoding for the N_sym field is completed before the operation for FES is performed.
- the value of the symbol offset generator can be reset to zero.
- the symbol offset generator may operate according to the reset mode according to the values of the FI_mode field and the N_sym field.
- the value of the symbol offset generator may or may not be reset to zero. This reset process may be performed alternately every frame.
- a reset of the symbol offset generator may occur at the last symbol of the first frame shown, FES.
- the interleaving sequence can be reset to the # 0 sequence.
- the frequency interleaver / deinterleaver may process the corresponding FES according to the sequence # 0 (t54010).
- the symbol offset generator is reset again so that the # 0 sequence may be used (t54010).
- a reset may not occur in the FES of the second frame (frame # 1), but again, a reset may occur in the FES of the third frame (frame # 2).
- 33 is a diagram illustrating an embodiment in which the number of symbols is odd in signaling for single memory deinterleaving not affected by the number of symbols in a frame according to an embodiment of the present invention.
- FI scheme # 1 In the first frame, information on how the FSS is interleaved can be obtained from the FI_mode field of the preamble. Since the number of OFDM symbols is odd, FI scheme # 1 and FI scheme # 2 may be used. In the first frame of this embodiment, FI scheme # 1 is used.
- the FSS may be decoded to obtain N_sym information. It can be seen from the N_sym information that the number of symbols in the frame is odd. Thereafter, when the frequency deinterleaver decodes the FES, decoding may be performed using the obtained FI_mode information and N_sym information. Since the number of symbols is an odd number and the FI scheme # 1 is used, the FI_mode field value is 0. Since FI_mode is 0, the symbol offset generator may operate according to the above-described reset mode. That is, the reset mode may be in an on state.
- the symbol offset generator can be reset to zero. Since the value of the FI_mode field is 1 in the second frame, it can be seen that the FSS has been processed by the FI scheme # 2. Again, it can be seen that the number of symbols is odd through the N_sym field. In the case of the second frame, since the FI_mode field value is 1 and the number of symbols is odd, the symbol offset generator may not operate according to the reset mode.
- the FI scheme to be used in the FSS can be set alternately between the FI schemes # 1 and # 2.
- the reset mode to be used in the FES can be set alternately on and off. In some embodiments, the setting may not change every frame.
- FIG. 34 illustrates operation of a frequency deinterleaver in signaling for single memory deinterleaving that is not affected by the number of symbols in a frame according to an embodiment of the present invention.
- the frequency deinterleaver may perform frequency deinterleaving using information of the FI_mode field and / or the N_sym field defined above. As described above, the frequency deinterleaver may operate using a single memory. Basically, frequency deinterleaving may be a process of performing an inverse process of the frequency interleaving process performed by the transmitter so that the original data may be restored.
- the frequency deinterleaving for the FSS may be operated based on the information about the FI scheme obtained by using the FI_mode field and the N_sym field of the preamble.
- Frequency deinterleaving for FES may be operated based on whether the reset mode is operated through the FI_mode field and the N_sym field.
- the frequency deinterleaver may perform a reverse process of the read / write operation of the frequency interleaver with respect to the pair of OFDM symbols input. In this process, one interleaving sequence may be used.
- the frequency interleaver follows a ping-pong structure using a double memory, but the frequency deinterleaver may perform deinterleaving with a single memory.
- This single memory frequency deinterleaving may be performed using information of the FI_mode field and the N_sym field. With this information, single memory frequency deinterleaving may be possible even for a frame having an odd number of OFDM symbols without being affected by the number of OFDM symbols.
- the frequency interleaver according to the present invention can perform frequency interleaving on all data cells of an OFDM symbol.
- the frequency interleaver may perform an operation of mapping data cells to an available data carrier of each symbol.
- the frequency interleaver according to the present invention may operate in different interleaving modes according to the FFT size. For example, if the FFT size is 32K, the frequency interleaver performs random write / linear read operation on the even symbol and linear write / random read operation on the odd symbol as in the FI scheme # 1 described above. can do. In addition, when the FFT size is 16K or 8K, the frequency interleaver may perform a linear read / random write operation on all symbols regardless of even / odd.
- the FFT size for determining the interleaving mode switching may be changed according to an embodiment. That is, in the case of 32K and 16K, the operation may be performed as in FI scheme # 1, and in the case of 8K, an even / odd independent operation may be performed. In addition, it may operate like FI scheme # 1 for all FFT sizes, and may perform an even / odd independent operation for all FFT sizes. In addition, according to an embodiment, the specific FFT size may operate as FI scheme # 2.
- Such frequency interleaving may be performed using the above-described interleaving sequence (interleaving address).
- the interleaving sequence may be variously generated using the offset value as described above.
- an address check may be performed to generate various interleaving sequences.
- 35 is a conceptual diagram illustrating a variable data-rate system according to another embodiment of the present invention.
- one transmission super frame shown in this figure is composed of NTI_NUM TI groups, and each TI group may include N BLOCK_TI FEC blocks.
- the number of FEC blocks included in each TI group may be different.
- the TI group according to an embodiment of the present invention may be defined as a block for performing time interleaving and may be used in the same meaning as the above-described TI block or IF.
- interleaving the TI groups using one twisted row-column block interleaving rule is performed. For example. This allows the receiver to perform deinterleaving using a single memory.
- VBR variable bit-rate
- Equation shown in the figure represents block interleaving applied to each TI group unit.
- the shift value may be calculated when the number of FEC blocks included in the TI group is odd and even. That is, in the block interleaving according to an embodiment of the present invention, the number of FEC blocks is made odd and the shift value can be calculated.
- the time interleaver may determine parameters related to interleaving based on a TI group having the largest number of FEC blocks in a super frame. This allows the receiver to perform deinterleaving using a single memory. In this case, virtual FEC blocks corresponding to the number of insufficient FEC blocks may be added to the TI group having fewer FEC blocks than the number of FEC blocks of the TI group including the most determined FEC blocks.
- Virtual FEC blocks according to an embodiment of the present invention may be inserted before actual FEC blocks. Subsequently, the time interleaver according to an embodiment of the present invention performs interleaving for TI groups using one twisted row-column block interleaving rule in consideration of virtual FEC blocks. Can be done. In addition, the time interleaver according to an embodiment of the present invention may perform the skip operation described above when a memory-index corresponding to virtual FEC blocks occurs in a reading operation. After writing, the number of FEC blocks of the input TI group and the number of FEC blocks of the output TI group match when reading.
- the left side of the figure shows a parameter and a number of virtual FEC blocks indicating the difference between the number of maximum FEC blocks and the number of actual FEC blocks included in the TI group and the number of maximum FEC blocks and the number of actual FEC blocks.
- the equation is shown.
- the right side of the figure shows an embodiment in which virtual FEC blocks are inserted into a TI group.
- virtual FEC blocks may be inserted before the actual FEC block.
- FIG. 39 is a equation illustrating a reading operation after virtual FEC blocks are inserted according to an embodiment of the present invention.
- the skip operation shown in the figure may play a role of skipping virtual FEC blocks in a reading operation.
- 40 is a flowchart illustrating a process of time interleaving according to an embodiment of the present invention.
- the time interleaver according to an embodiment of the present invention may set an initial value (S67000).
- the time interleaver may write actual FEC blocks in consideration of virtual FEC blocks (S67100).
- the time interleaver may generate a temporal TI address (S67200).
- the time interleaver according to an embodiment of the present invention may evaluate the availability of the generated TI reading address (S67300). Thereafter, the time interleaver according to the embodiment of the present invention may generate a final TI reading address (S67400).
- time interleaver may read actual FEC blocks (S67500).
- FIG. 41 is an equation illustrating a process of determining a shift value and a size of a maximum TI block according to an embodiment of the present invention.
- the figure shows an embodiment in which there are two TI groups, the number of cells in the TI group is 30, the number of FEC blocks included in the first TI group is 5, and the number of FEC blocks included in the second TI block is 6. Indicates.
- the number of maximum FEC blocks is 6, but is even, so that the number of adjusted maximum FEC blocks for obtaining the shift value can be 7, and the shift value can be calculated as four.
- 42 to 44 are diagrams illustrating the TI process of the above-described embodiment in the previous figure.
- This figure shows the writing operations for the two TI groups described in the previous figures.
- the block shown on the left side of the figure represents a TI memory address array, and the block shown on the right side of the figure shows two and one virtual FEC blocks, respectively, for two consecutive TI groups. Represents a writing operation when a dog is inserted. Since the number of adjusted maximum FEC blocks is 7 as described above, two virtual FEC blocks are inserted into the first TI group, and one virtual FEC block is inserted into the second TI group.
- the block shown on the left side of the figure represents a TI memory address array, and the block shown on the right side of the figure shows two and one virtual FEC blocks, respectively, for two consecutive TI groups.
- 44 is a view illustrating a result of a skip operation performed in a reading operation according to an embodiment of the present invention.
- virtual FEC blocks may be skipped in two TI groups.
- FIG. 47 shows time deinterleaving for the first TI group
- FIG. 48 shows time deinterleaving for the second TI group.
- 45 illustrates a writing process of time deinterleaving according to an embodiment of the present invention.
- the block shown on the left side of the figure represents a TI memory address array
- the block shown in the middle of the figure represents the first TI group input to the time deinterleaver
- the block shown on the right side of the figure represents the first consecutive A writing process performed taking into account virtual FEC blocks skipped for a TI group is shown.
- two virtual FEC blocks that are skipped in the TI process may be restored in the writing process for accurate reading operation.
- the location and amount of the two virtual FEC blocks that were skipped can be estimated through any algorithm.
- the block shown on the left side of the figure represents a TI memory address array
- the block shown in the middle of the figure represents the second TI group input to the time deinterleaver
- the block shown on the right side of the figure represents the second consecutive.
- a writing process performed taking into account virtual FEC blocks skipped for a TI group is shown.
- one virtual FEC blocks skipped in the TI process may be restored in the writing process for accurate reading operation.
- the location and amount of one virtual FEC blocks that were skipped can be estimated through any algorithm.
- FIG. 47 is a equation illustrating reading operation of time deinterleaving according to another embodiment of the present invention.
- the TDI shift value used in the receiver may be determined by the shift value used in the transmitter, and the skip operation plays a role of skipping virtual FEC blocks in a reading operation similar to the transmitter. Can be.
- 48 is a flowchart illustrating a process of time deinterleaving according to an embodiment of the present invention.
- the time deinterleaver according to an embodiment of the present invention may set an initial value (S75000).
- the time interleaver may write actual FEC blocks in consideration of virtual FEC blocks (S75100).
- the time interleaver may generate a temporal TDI address (S75200).
- the time interleaver according to an embodiment of the present invention may evaluate the availability of the generated TDI reading address (S75300). Thereafter, the time interleaver according to an embodiment of the present invention may generate a final TDI reading address (S75400).
- time interleaver may read actual FEC blocks (S75500).
- FIG. 49 illustrates a configuration of a main physical device and a companion physical device according to an embodiment of the present invention.
- An embodiment of the present invention may provide a service guide in a terrestrial broadcast or mobile broadcast environment.
- an embodiment of the present invention may provide a service guide for a service that may be possible in a next generation hybrid broadcasting environment based on the interworking of the terrestrial broadcasting network and the Internet network.
- An embodiment of the present invention may inform a user of various services that can be provided in a next generation hybrid broadcasting system and content and / or component elements configuring the same. Through this, the user may provide convenience in checking, selecting, and enjoying a corresponding service.
- An embodiment of the present invention may structure and refer to a service and various content and / or component elements configuring the same. Through this, the broadcast receiver can easily configure and provide a corresponding service and allow a user to easily grasp the corresponding service.
- An embodiment of the present invention extends a reference structure that associates a service with various content and / or component elements constituting the service, thereby allowing a broadcast receiver and / or user to select content and / or component elements constituting a service. You can save resources and / or time spent searching.
- This figure shows the overall configuration of the main physical device and the companion physical device according to an embodiment of the present invention.
- the main physical device L25010 is one of devices for an interactive service, and mainly indicates a device to be controlled by a companion physical device L25020. Can be.
- the main physical device may be referred to as a main device, a main receiving device, a main receiver, a main display, a main screen, and the like.
- the main physical device L25010 is a broadcast interface (L25030), a network interface (L25040), a memory unit (L25050), a control unit (L25060), a display unit (L25070), and a multimedia module (L25080). , storage (L25090), power supply (L25100), and / or user input interface (L25110).
- the broadcast interface L25030 may represent a physical device that enables message and / or data transmission between the broadcaster and the device such as an AV stream, service guide, and notification.
- the broadcast interface may receive broadcast signals, signaling information, data, and the like from the broadcaster.
- the network interface L25040 refers to a physical device that enables message, advertise, and / or data transfer such as command, request, action, response, etc. between devices (eg, main physical device and companion physical device). Can be.
- the network interface may receive a broadcast service, broadcast content, signaling information, applications, data, etc. from an internet service provider.
- the memory unit L25050 is an optional device implemented in various types of devices and may represent a volatile physical device capable of temporarily storing various types of data.
- the control unit L25060 is a device that controls the overall operation of the source device and / or sink device, and may be software or hardware.
- the source device may represent a device for transmitting a message and / or data
- the sink device may represent a device for receiving a message and / or data. Therefore, the main physical device and the companion physical device according to an embodiment of the present invention may correspond to a source device or a sink device.
- the display unit L25070 may display data received through a network interface or data stored in a storage on a screen. At this time, the display unit may be operated by the control of the control unit.
- the multimedia module L25080 may play various kinds of multimedia.
- the multimedia module may be included in the control unit and may exist separately from the control unit.
- the storage L25090 may represent a nonvolatile physical device capable of storing various kinds of data.
- an SD card may correspond to storage.
- the power supply L25100 may represent a device that supplies power required for the operation of other components by receiving external power and / or internal power by controlling the control unit.
- the user input interface L25110 may represent a device capable of receiving an input such as a command from the user.
- a companion physical device may be a device for controlling a main device as one of devices for an interactive service.
- the companion physical device can receive input directly from the user.
- the companion physical device may be called a companion device, a second device, an additional device, an auxiliary device, a companion receiving device, a companion receiver, a companion display, a second screen, or the like.
- the companion physical device L25020 may include a network interface, a memory unit, a control unit, a display unit, a multimedia module, a storage, a power supply, and / or a user input interface.
- components constituting the companion physical device may have the same function as the components constituting the main device described above. .
- 50 is a diagram illustrating a protocol stack for supporting hybrid broadcast service according to an embodiment of the present invention.
- the physical layer may receive the terrestrial broadcast signal and convert it to an appropriate form.
- IP Encapsulation may obtain an IP datagram using information obtained from a physical layer.
- the obtained IP datagram may be converted into a specific frame (eg, RS Frame, GSE, etc.).
- MPEG-2 TS Encapsulation may acquire MPEG-2 TS using information obtained from a physical layer.
- the obtained MPEG-2 TS datagram may be converted into a specific frame (eg, RS Frame, GSE, etc.).
- a fast information channel may carry information (eg, mapping information between a service ID and a frame) for making a service and / or content accessible.
- Signaling may include signaling information to support effective acquisition of services and / or content.
- the signaling information may be expressed in binary and / or XML format and may be transmitted through a terrestrial broadcasting network and / or broadband.
- Real-time broadcast A / V (Audio / Video) content and data may be represented in an ISO Base Media File Format (ISOBMFF) and the like, and may be transmitted in real time through a terrestrial broadcasting network and / or broadband.
- Non-real-time content may be transmitted based on IP / UDP / FLUTE.
- the real-time broadcast A / V (Audio / Video) content, data, and / or signaling information may be transmitted in real time through an internet network using DASH.
- real-time broadcast A / V (Audio / Video) content, data, and / or signaling information may be transmitted by request, or may be transmitted by real-time streaming.
- various enhanced services such as an interactive service and a second screen service may be provided to a viewer by combining data transmitted through the above-described protocol stack.
- FIG. 51 is a diagram illustrating an UPnP type Action mechanism according to an embodiment of the present invention.
- Inter-device communication may mean exchanging messages / commands / calls / actions / requests / responses between devices.
- ICMP Internet Control Message Protocol
- IGMP Internet Group Management Protocol
- IP Internet Protocol
- HTTP Hypertext Transfer Protocol
- RTP Real-time Transport Protocol
- XMPP Extensible Messaging and Presence Protocol
- FTP File Transfer Protocol
- various components such as a message header / message body defined by each protocol may be utilized. That is, data may be stored and transmitted in each message component, and is not limited to a specific message component.
- the data delivered by the message can be delivered in various types (string, integer, floating point, boolean, character, array, list, etc.) defined by each protocol.
- Markup methods such as XML (Extensible Markup Language), HTML (Hypertext Markup Language), XHTML (Extensible Hypertext Markup Language), and JSON (JavaScript Object Notation) to structurally express / transfer / save complex data.
- text and image formats may be applied. At this time, the present invention is not limited to a specific manner.
- a message used for device-to-device communication may be compressed and transmitted, but the present invention is not limited to applying a specific type of compression technology.
- the UPnP scheme may correspond to a case in which IP-TCP / UDP-HTTP protocols are combined in the above description of device-to-device communication.
- the illustrated UPnP action mechanism may mean a communication mechanism between the UPnP control point and the UPnP device.
- the UPnP control point t87010 may be an HTTP client, and the UPnP device t87020 may be an HTTP server.
- the UPnP control point t87010 may transmit a kind of message called an action to the UPnP device t87020 so that the UPnP device t87020 may perform a specific operation.
- the UPnP control point t87010 and the UPnP device t87020 may be paired. Pairing may be performed through a discovery and description transfer process between the devices.
- the UPnP control point may acquire a control URL through a pairing process.
- the UPnP control point t87010 may display each action in the form of XML.
- the UPnP control point t87010 may transfer the acquired control URL by using the POST method t87030 defined in HTTP.
- Each action can be data that you actually want to deliver as a message, which can be delivered in XML form in the HTTP POST message body.
- each action may include a name, arguments, and related data.
- the HTTP POST message body may carry the name and / or argument of each action.
- each action can be delivered to the same control URL.
- the UPnP device t87020 may parse the received action using an XML parser.
- the UPnP device t87020 may perform a corresponding operation according to each parsed action.
- each action may be defined and used by a name.
- the action name is also included in the HTTP POST message body, only one URL for the target device exists, and even one HTTP POST method may be used, it is possible to exchange infinite kinds of actions.
- FIG. 52 illustrates a REST mechanism according to an embodiment of the present invention.
- the REST mechanism according to the exemplary embodiment of the present invention illustrated may mean a communication mechanism between the REST client t88010 and the REST server t88020.
- the REST client t88010 may be an HTTP client
- the REST server t88020 may be an HTTP server.
- the REST client may transmit a kind of message called an action to the REST server t88020 to allow the REST server t88020 to perform a specific operation.
- the REST client t88010 may deliver each action to the REST server t88020 through a URI.
- Action names may not be required for each action.
- Each action may contain only arguments and data.
- Data or arguments that need to be delivered may be delivered in addition to the corresponding URI, or may be delivered in various forms (XML, JSON, HTML, TEXT, IMAGE,%) In the HTTP body.
- the REST server t88020 may perform a specific operation according to the received action.
- the aforementioned device-to-device communication is only one embodiment, and all the contents proposed by the present invention are not limited to the UPnP scheme.
- 53 is a diagram illustrating a service for exchanging ESGs between a broadcast receiver and companion devices according to one embodiment of the present invention.
- An Electronic Service Guide is a channel or information that can be delivered through Service Guide Delivery Descriptors within a particular session. It provides users with service guides for broadcast, radio or other media applications. Can provide.
- the ESG can provide the user with scheduling of services or program-related information in the form of a menu.
- the ESG may be provided through a broadcast channel or an internet channel (broadband).
- ESG Users can perform operations such as service provision schedule, discovery of entry points of currently available services, and filtering services according to preference through the ESG.
- Content providers can express information about what services and / or content are available, purchase / subscribe information, service access information, etc. through the ESG.
- the ESG may be referred to as a service guide or an electronic program guide (EPG).
- the present invention proposes a method of accessing ESG information without interrupting the viewing of a broadcast program currently being executed by executing service guides such as ESG in a companion device.
- the user can access the ESG without feeling inconvenience in watching the broadcast program.
- the user can be protected by using a personal companion device in the ESG search.
- the convenience may be increased by searching the ESG through the UI of the companion device instead of the UI of the broadcast receiver which is generally less convenient.
- the present invention can solve the above-described problem by defining a protocol for transmitting ESG information from a broadcast receiver to a companion device in a next generation hybrid broadcasting environment based on interworking terrestrial broadcasting networks and Internet networks.
- the present invention proposes a protocol that allows a service of a broadcast receiver to be changed through channel information delivery from a companion device when a user selects a new service through an ESG provided by a companion device.
- One embodiment of a service for exchanging the illustrated ESG may be referred to as an ESG service.
- the ESG service may be a service for exchanging ESGs between a broadcast receiver and a companion device.
- the service type of the ESG service may be defined as atsc3.0ESG-1, and the service ID may be urn: atsc.org: serviceId: atsc3.0ESG.
- a UPnP device type may be defined.
- the broadcast receiver has a device type of urn: atsc.org: device: atsc3.0rcvr and can operate as a UPnP controlled device.
- the companion device can operate as a UPnP Control Point.
- ESGData For the aforementioned ESG service, a state variable called ESGData may be defined.
- the ESGData state variable may be a state variable representing the ESG itself.
- ESGData state variable can store ESG data of ESG received through broadcasting / internet.
- the ESGData shown is written in XML format.
- the ESGData state variable may store ESG data representing the ESG, that is, elements, attributes, and sub elements in the ESG.
- the service element t54010 in the ESGData state variable may be an element having information related to a service indicated by the ESG among contents constituting the ESG.
- Service @ id representing the service ID
- Service @ version representing the service version
- Service.Name representing the service name
- Service.Description description of the service and / or the type of the service.
- Information such as Service.ServiceType may be present.
- A.B may mean a B element which is a lower element of the A element
- a @ a may mean @a which is a sub-attribute of the A element.
- Service.ServiceType that is, a lower element of the service, that is, the ServiceType element may indicate the type of service indicated by the corresponding service.
- 0 is unspecified
- 1 is Basic TV
- 2 is Basic Radio
- ... is linear service
- 15 is app based service
- 16 is companion It may mean a screen screen service.
- the value indicated by this element may vary depending on the embodiment.
- the schedule element t54020 in the ESGData state variable may be an element having schedule information of services / programs indicated by the ESG among the contents of the ESG data.
- information such as Schedule @ id indicating a schedule ID and Schedule @ version indicating a schedule version may be included.
- information such as Scheudle.ServiceReference representing a service related to a schedule, Scheudle.InteractivityDataReference representing interactivity data related to a schedule, and Scheudle.ContentReference representing content related to a schedule may be included.
- the content element t54030 in the ESGData state variable may be an element having content information indicated by the ESG among contents constituting the ESG.
- Content @ id representing the content ID
- Content @ version representing the content version
- Content.Name representing the content name
- Content.Description describing the content
- Information such as Content.StartTimie and / or Content.EndTime indicating the end time of reproduction of content
- the ComponentReference which is a lower element of the Content element, may include information referencing a component of the corresponding content related to the corresponding content. Through this, related components may be identified and relevant component related information in the ESG may be referenced.
- the component element t54040 in the ESGData state variable may be an element having component information of content indicated by the ESG among contents constituting the ESG.
- information such as Component @ id representing the component ID and Component @ version representing the version of the component may be included.
- Language indicating the language of the component Length indicating the length of the component, ParentalRating indicating the component's rating, ComponentType indicating the component's type, ComponentRole indicating the role of the component, and indicating the device to which the component is targeted Information such as a TargetDevice element may be included.
- information such as PresentableVideoComponent, PresentableAudioComponent, PresentableCCComponent, and PresentableAppComponent may be included in the element depending on whether the component is playable video, audio, closed caption, and app.
- the ESGData state variable may be delivered to the companion device by an event method or an action method according to an embodiment.
- ESGData ESGData
- elements / properties, etc. in ESGData may be further added, changed, or deleted according to the configuration, format, etc. of the ESG.
- ESGData state variables are a view showing ESGData state variables according to another embodiment of the present invention.
- the ESGData state variable shown is similar to the ESGData state variable described above, except that the Component element is included as a child element of the Content element.
- the component element may be included as a lower element of the content element.
- the capability of devices supported by each component may be defined as a lower element, DeviceCapability, and may be included as a lower element of the component element.
- 56 is a diagram illustrating a process of delivering an ESGData state variable to a companion device according to an event according to an embodiment of the present invention.
- the CD Compaction Device
- a PD Primary Device
- the two devices assume that pairing has already been performed.
- the companion device has subscribed to the aforementioned ESG service.
- the ESGData state variable may have no value.
- the service / content provider may transmit the ESG through a broadcasting network or a broadband channel (t56020).
- the ESG may be received via the receiver unit or network interface of the receiver.
- the receiving unit may be the above-described broadcast interface or tuner.
- the receiver may signal the received ESG (t56030).
- the ESG data may be stored in the ESGData state variable (t56040).
- ESGData may be delivered to the companion device through eventing (t56050). After receiving the ESGData state variable, the companion device parses it (t56060), and the ESG may be exposed to the companion device through the UI according to the parsed value (t56070). In this case, in order to show the ESG to the user, the UI may be expressed at the native level of the companion device or may be expressed in the application of the companion device.
- the companion device may immediately expose the ESG to the user in any form.
- the companion device may send a notification message to the user and expose the ESG when the user executes it.
- the companion device may have ESG information in the background, and when the user directly executes an application that can view the ESG when desired, the ESG may be exposed to the user at that time.
- 57 illustrates a LastChangedESGData state variable according to an embodiment of the present invention.
- a state variable called LastChangedESGData may be defined for the aforementioned ESG service. As described above, when the entire ESG is delivered to the companion device, even if only a part of the ESG data is changed, all the ESG data may be delivered to be inefficient. For this purpose, a state variable LastChangedESGData that stores only changed ESG data can be defined. The LastChangedESGData state variable can store only the ESG data added / changed / deleted in the newly received ESG compared to the previous ESG.
- the LastChangedESGData state variable may include an Addition element (t57010).
- This element can store ESG data added to newly received ESG, compared to existing ESG data.
- newly added ESG data i.e. element / properties
- ESG data related to a new service having a new service ID compared to the existing one is added to a newly received ESG
- elements / properties related to the new service may be included in an Addition element subtree.
- a service having an ID of "atsc.org/esg/service/3 has been newly added, and it can be seen that the Addition element includes the Service element of the corresponding service.
- Atsc.org/esg A new service named ABC has been added with an ID of / service / 4, indicating that the Addition element contains the Service element of the service.
- information such as service, content, and schedule may be included in this element.
- the LastChangedESGData state variable may include a Modification element (t57020).
- This element can store the changed ESG data in the newly received ESG, compared to the existing ESG data.
- modified ESG data i.e. element / properties, can be stored.
- the Schedule element of the schedule may be stored in the Modification element.
- information such as service, content, and schedule may be included in this element.
- the LastChangedESGData state variable may include a Deletion element (t57030).
- This element can store the deleted ESG data in the newly received ESG, compared to the existing ESG data.
- deleted ESG data i.e. element / properties
- the Content element of that content is a Deletioin element.
- information such as service, content, and schedule may be included in this element.
- the LastChangedESGData state variable may be delivered to the companion device by an event method or an action method according to an embodiment.
- the present state variable may be delivered to the companion device when there is a change in the value of the present state variable.
- a LastChangedESGData state variable may be configured for the most recent change of the ESG data at the time when a request for the present state variable value is received, and then delivered to the companion device.
- the companion device may update only changed ESG data compared to the previously stored ESG by referring to the lastChangedESGData state variable. In this way, efficient delivery can be performed as compared with the case where the entire ESG is delivered.
- LastChangedESGData is only one embodiment of LastChangedESGData, and elements / properties, etc. in LastChangedESGData may be further added, changed, or deleted according to the configuration, format, etc. of the ESG.
- FIG. 58 is a diagram illustrating a process of delivering ESG data to a companion device according to the GetESGData action according to an embodiment of the present invention.
- the ESGData state variable may be delivered to the companion device in an event manner.
- an event is sent to the companion device whenever the ESG is changed at the receiver side, it may be a network overload or burden on the companion device side. Therefore, the GetESGData () action may be defined so that the companion device can deliver ESG data only when desired.
- the GetESGData () action may be an action for delivering the ESGData state variable to the companion device in an action manner. That is, when the companion device requests ESG data from the receiver through this action, the receiver may deliver the ESGData state variable to the companion data. There is no input argument for this action, and the output argument can be an ESGData state variable.
- the GetESGData () action may be performed when the user executes an ESG application or the like when the user wants to view the ESG on the companion device.
- the ESG data is delivered as a result of the action, and the ESG data delivered through the ESG application can be exposed.
- the GetESGData () action may be performed in a periodic polling manner to store ESG data in the companion device. When the ESG application is executed, the stored ESG data may be exposed to the user.
- the GetESGData () action can be supported at the same time even if the ESGData state variable supports the eventing method. In this case, however, if ESG data is delivered through an event method whenever ESGData is changed, and ESG data is also delivered through an action, there may be a duplication. Therefore, if the action and eventing methods are supported at the same time, ESG data is delivered in the eventing method only when subscribing the first ESG service, and thereafter, when the ESG application is executed or periodically GetESGData () You can also take action to take a policy of getting ESG data.
- the receiver may have ESG data (t58010).
- ESG data may be stored in ESGData state variables.
- the user may take specific actions such as running an ESG application (t58020).
- a specific action can be any action that requires ESG data.
- the companion device may request an ESGData state variable from the receiver by performing a GetESGData () action (t58030).
- the receiver may send a call back of 200 OK and simultaneously output the ESGData state variable, which is an output variable of the GetESGData () action, to the companion device (t58040).
- the companion device may parse the received ESGData and expose the same through the ESG application using the ESG data (t58050).
- the companion device may immediately expose, store, or store the ESG data according to the above-described embodiments.
- the GetESGData () action is performed when the user performs a specific action.
- the GetESGData () action may be performed periodically (regardless of whether or not a specific action is performed), and then delivered through the action when the user executes an ESG application at a certain point in time. ESG data that has been received and stored may be exposed.
- 59 is a diagram illustrating a process of delivering ESG data to a companion device according to GetServiceIds and GetESGbyServiceIds actions according to an embodiment of the present invention.
- the ServiceIdsList state variable and the A_ARG_TYPE_ESGData_by_ServiceIds state variable can be defined.
- the ServiceIdsList state variable may be a state variable for delivering IDs of services described by the ESG to the companion device. That is, the state variable may include service ID information among ESG data parsed and stored in the receiver.
- This state variable may have a type of a list of strings or a list of URIs.
- the type of URI can be any here. According to an embodiment, this state variable may be expressed in a CSV format. For example, atsc.org/esg/service/1, atsc.org/esg/service/2,... , And the like.
- the A_ARG_TYPE_ESGData_by_ServiceIds state variable may be a state variable that stores some ESG data of the ESG. This state variable may be defined to deliver only some ESG data to the companion device. This state variable may have a fragment type of a markup language of a specific type for expressing the ESGData state variable. For example, if the ESGData state variable is an XML document, this state variable may have an XML fragment type.
- the service IDs of the ESG of the receiver may be first transmitted to the companion device, and accordingly, only the required ESG data requested may be delivered to the companion device.
- a GetServiceIds action and a GetESGbyServiceIds action may be defined.
- the GetServiceIds action may be an action for the companion device to receive IDs of the service from the receiver.
- the receiver may transmit the service IDs in the form of a list to the companion device among the information about the service described by the ESG.
- the GetServiceIds action may be performed when the user executes an ESG application or the like when the user wants to view the ESG on the companion device.
- the ESG data is delivered as a result of the action, and the ESG data delivered through the ESG application can be exposed.
- the GetServiceIds action is performed in a periodic polling manner to store ESG data in the companion device, and when the ESG application is executed, the stored ESG data may be exposed to the user.
- the GetESGbyServiceIds action may be defined so that the companion device receives only ESG data corresponding to a specific service from the receiver.
- the companion device may select a service ID of a desired service by using a list of service IDs delivered by the GetServiceIds action. Thereafter, in order to receive ESG data of a desired service, this action may be performed using a list of service IDs as an input variable. As a result, the companion device may receive ESG data about the desired service.
- the input variable of this action may be a ServiceIdsList state variable, and the output variable may be an A_ART_TYPE_ESGData_by_ServiceIds state variable.
- the GetESGbyServiceIds action may be performed when the user executes an ESG application or the like when the user wants to view the ESG on the companion device.
- the ESG data is delivered as a result of the action, and the ESG data delivered through the ESG application can be exposed.
- the GetESGbyServiceIds action is performed in a periodic polling manner to store ESG data in the companion device, and when the ESG application is executed, the stored ESG data may be exposed to the user.
- all ESG data may be requested regardless of the service ID.
- the input variable when the input variable is set to "empty" in the GetESGbyServiceIds action, it may be set to request ESG data for a service currently being viewed.
- the receiver may have ESG data (t59010).
- ESG data may be stored in ESGData state variables.
- ESG data stored in ESGData may be ESG data for two services identified as "atsc.org/esg/service/1" and "atsc.org/esg/service/2" (t59080).
- the user may take specific actions, such as running an ESG application (t59020).
- a specific action can be any action that requires ESG data.
- the companion device may request a list of service IDs through the GetServiceIds action (t59030).
- the receiver may output the ServiceIdsList to the companion device together with the 200 OK (t59040).
- the value of ServiceIdsList may be equal to (atsc.org/esg/service/1, atsc.org/esg/service/2).
- the GetESGbyServiceIds action may be performed using this as an input variable (t59050).
- the receiver may output A_ART_TYPE_ESGData_by_ServiceIds to the companion device with 200 OK (t59060).
- the value of A_ART_TYPE_ESGData_by_ServiceIds may be ESG data related to a service identified as "atsc.org/esg/service/1" (t59090).
- the Schedule element and Content element having atsc.org/esg/service/1 as the reference value can be included in the output variable.
- the Schedule element and the Content element may be schedule and content information related to a service identified by atsc.org/esg/service/1.
- the companion device may parse the received ESG data and expose it through the ESG application using the ESG data (t59070).
- the companion device may immediately expose, store, or store the ESG data according to the above-described embodiments.
- the illustrated embodiment corresponds to a case in which a user performs a specific action, but as described above, the action may be performed first (regardless of whether a specific action is performed), and then the user executes an ESG application or the like at a certain point in time. ESG data previously received and stored through the action may be exposed.
- 60 is a view illustrating a process of delivering ESG data to a companion device according to the GetCurrentServiceId action according to an embodiment of the present invention.
- ESG data for the service currently being viewed at the receiver may need to be delivered to the companion device.
- the service ID of the service currently being viewed may be delivered to the companion device.
- the CurrentServiceId state variable and the GetCurrentServiceId action may be defined.
- the CurrentServiceId state variable may store a service ID of a service currently being viewed by the receiver, among ESG data of the receiver.
- This state variable may be a string or a specific URI type.
- the GetCurrentServiceId action may be an action for the companion device to receive the service ID of the service currently being viewed by the receiver. There is no input variable for this action, and the output variable can be a CurrentServiceId state variable.
- the GetCurrentServiceId action may be performed when the user executes an ESG application or the like when the user wants to view the ESG on the companion device.
- the ESG data is delivered as a result of the action, and the ESG data delivered through the ESG application can be exposed.
- the GetCurrentServiceId action is performed in a periodic polling manner to store ESG data in the companion device, and when the ESG application is executed, the stored ESG data may be exposed to the user.
- the receiver may have ESG data (t60010).
- ESG data may be stored in ESGData state variables.
- ESG data stored in ESGData may be ESG data for two services identified as "atsc.org/esg/service/1" and "atsc.org/esg/service/2" (t60090).
- the receiver may periodically signal the broadcast currently being viewed, and update the service ID of the currently viewed service to the CurrentServiceId state variable.
- the user may take specific actions such as running an ESG application (t60030).
- a specific action can be any action that requires ESG data.
- the companion device may request the ID of the service currently being viewed through the GetCurrentServiceId action (t60040).
- the receiver may output the CurrentServiceId state variable to the companion device together with 200 OK (t60050).
- the value of the CurrentServiceId state variable may be "atsc.org/esg/service/1".
- the companion device may request service-related ESG data currently being viewed by performing a GetESGbyServiceIds action (t60060).
- the input variable of the GetESGbyServiceIds action may be atsc.org/esg/service/1.
- the receiver may output the A_ART_TYPE_ESGData_by_ServiceIds state variable to the companion device with 200 OK (t60070).
- the value of A_ART_TYPE_ESGData_by_ServiceIds may be ESG data related to a service identified by "atsc.org/esg/service/1" (t60100).
- the Schedule element and Content element having atsc.org/esg/service/1 as the reference value can be included in the output variable.
- the Schedule element and the Content element may be schedule and content information related to a service identified by atsc.org/esg/service/1.
- the companion device may parse the received ESG data and expose the same through the ESG application using the ESG data (t60080).
- the companion device may immediately expose, store, or store the ESG data according to the above-described embodiments.
- the illustrated embodiment corresponds to a case in which a user performs a specific action, but as described above, the action may be performed first (regardless of whether a specific action is performed), and then the user executes an ESG application or the like at a certain point in time. ESG data previously received and stored through the action may be exposed.
- FIG. 61 illustrates a process of delivering ESG data to a companion device according to a SearchESG action according to an embodiment of the present invention.
- the companion device may request to transmit the corresponding ESG data only when a specific field of the ESG data has a specific value (target value).
- target value For this purpose, an A_ART_TYPE_SearchField state variable, an A_ART_TYPE_TargetValue state variable, and a SearchESG action may be defined.
- the A_ART_TYPE_SearchField state variable may indicate a specific field that the companion device wants to specify. That is, this state variable may be a list of names of elements / properties of the ESGData state variable. For example, values such as Service @ id and Service.Genre can be stored in this state variable. This state variable may have a list type of strings. This state variable can also be called a SearchField.
- the A_ART_TYPE_TargetValue state variable can store a specific value of a specific field designated by a companion device, that is, a target value. This target value may be used to determine whether the indicated specific field has the corresponding target value. The ESG data of the receiver can be retrieved using this target value.
- This state variable may have a list type of strings. This state variable may be called TargetValue.
- the SearchESG action may be an action for the companion device to search for and request ESG data in the receiver.
- a specific field SearchField
- / or target value TargetValue
- the receiver may search for ESG data by whether the corresponding specific field has a corresponding target value.
- the receiver may output all related ESG data to the companion device. If no data matches, nothing may be output. According to an embodiment, even when only a part of the ESG data is matched, the ESG information may be delivered.
- An A_ART_TYPE_ESGData state variable may be defined as an output variable, which may be a state variable that stores some ESG data of the ESG like the A_ART_TYPE_ESGData_by_ServiceIds state variable described above.
- the A_ART_TYPE_ESGData state variable may be called SearchedESGData.
- the SearchESG action may be performed when the user executes an ESG application or the like when the user wants to view the ESG on the companion device.
- the ESG data is delivered as a result of the action, and the ESG data delivered through the ESG application can be exposed.
- the SearchESG action may be performed in a periodic polling manner to store the ESG data in the companion device. When the ESG application is executed, the stored ESG data may be exposed to the user.
- the receiver may have ESG data (t61010).
- ESG data may be stored in ESGData state variables.
- ESG data stored in ESGData are identified by "atsc.org/esg/service/1" and have a Service.Genre value of Drama, and a Service.Genre of Sports identified by "atsc.org/esg/service/2" It may be ESG data about a service having a value (t61050).
- the companion device may request ESG data using the SearchESG action (t61020).
- the input variable of the action may be the same as ("Service @ id, Service.Genre", "atsc.org/esg/service/1, Drama”). This may be for searching for ESG data having a service ID of atsc.org/esg/service/1 and a value of a sub element Genre of a service element of Drama.
- the receiver may search for ESG data matching the corresponding condition and output the ESG data to the companion device along with 200 OK (t61030).
- ESG data related to a service identified as "atsc.org/esg/service/1" matching the corresponding condition may be output.
- the companion device may parse the received ESG data and expose it through an ESG application using the ESG data (t61040).
- the companion device may immediately expose, store, or store the ESG data according to the above-described embodiments.
- FIG. 62 is a diagram illustrating an authentication process for delivering ESG data according to an DoAuthenticationForESG action according to an embodiment of the present invention.
- the CompanionDeviceId state variable, CompanionDeviceAppId state variable, CompanionDeviceAppVersion state variable, PrimaryDeviceId state variable, and DoAuthenticationForESG action may be defined.
- the CompanionDeviceId state variable may be a state variable that stores ID information of the companion device. Unique values for identifying companion devices may be stored in this state variable.
- a MAC address or the like may be used as the device ID, which may also be encrypted for security (e.g. hashed Mac address).
- This state variable may be a string or a specific URI type.
- the CompanionDeviceAppId state variable may be a state variable that stores ID information of an application that can be executed for ESG use in a companion device.
- the application may be a concept including both a native app or a browser-based app of the companion device.
- This state variable may be a string or a specific URI type.
- the CompanionDeviceAppVersion state variable may be a state variable that stores version information of an application that can be executed for ESG use in a companion device. The receiver may use this version information to determine whether to provide ESG information.
- This state variable may be a hex binary or an integer type.
- the PrimaryDeviceId state variable may be a state variable that stores device ID information of the receiver, that is, the primary device.
- the companion device can use this state variable to identify the receiver. Using this state variable, the companion device may determine whether the information is from an unintended receiver, or determine whether the receiver has requested a specific ESG when a plurality of receivers are searched on the home network.
- This state variable may be a string or a specific URI type.
- the DoAuthenticationForESG action may be an action for going through an authentication process for security before the companion device requests ESG data from the receiver. Through this authentication procedure, it may be determined whether ESG data may be exchanged.
- an ID of the companion device, an app ID of the companion device, and / or app version information of the companion device may be input to the receiver. This information may be referred to as authentication information.
- the receiver may determine which companion device requested or requested by the app for ESG.
- the receiver may output its device ID to the companion device.
- the companion device may check whether the target of the request for ESG is correct by referring to the ID of the received receiver.
- the actual ESG data can be obtained by a mechanism such as action / eventing proposed by the present invention.
- the input variables of this action may be CompanionDeviceId, CompanionDeviceAppId, CompanionDeviceAppVersion state variables, and the output variables may be PrimaryDeviceId state variables.
- the DoAuthenticationForESG action may be performed when the user executes an ESG application or the like when the user wants to view the ESG on the companion device.
- the DoAuthenticationForESG action may be performed in a periodic polling manner to perform an authentication procedure.
- the receiver may have ESG data (t62010).
- ESG data may be stored in ESGData state variables.
- the user may take a specific action such as executing an ESG application (t62020).
- a specific action can be any action that requires ESG data.
- the companion device may perform a DoAuthenticationForESG action (t62030). Through this, authentication information may be transmitted to the receiver.
- the receiver may determine whether it is an authenticated companion device using the received authentication information (t62040). If authenticated, the receiver may output its device ID with 200 OK to the companion device (t62050). The companion device may determine whether the receiver may request the ESG data using the ID of the received receiver (t62060).
- ESG data may be requested and received according to embodiments of the present invention (t62070, t62080).
- the companion device may parse the received ESG data and expose it through an ESG application using the ESG data (t62070).
- the companion device may immediately expose, store, or store the ESG data according to the above-described embodiments.
- the illustrated embodiment corresponds to a case in which a user performs a specific action, but as described above, the action may be performed first (regardless of whether a specific action is performed), and then the user executes an ESG application or the like at a certain time point. Since the authentication process has already been completed, operations for delivering ESG data can be immediately performed.
- FIG. 63 is a diagram illustrating a process of delivering ESG data to a companion device at the same time as device authentication according to GetServiceIds and GetESGbyServiceIds actions according to another embodiment of the present invention.
- a separate action may be defined for authentication.
- authentication can be performed by extending existing actions without defining a separate action, and at the same time, the original purpose of the existing actions can be performed.
- the actions to be extended may be all the actions introduced in the present invention. Actions to be extended may include CompanionDeviceId, CompanionDeviceAppId, CompanionDeviceAppVersion state variables as input variables, and PrimaryDeviceId state variables as output variables, in addition to previously defined input / output variables.
- This embodiment extends the GetServiceIds action and the GetESGbyServiceIds action.
- the present invention is not limited to the expansion of the corresponding action.
- the GetServiceIds action can be extended to have CompanionDeviceId, CompanionDeviceAppId, CompanionDeviceAppVersion state variables as input variables and PrimaryDeviceId state variables as well as existing ServiceIdsList state variables as output variables.
- the receiver may receive the authentication information according to this action, and if it is determined that the information can be delivered, the receiver may transmit IDs of services together with its device ID to the companion device.
- the companion device may determine whether the received service IDs may be used by referring to the received device IDs of the receivers.
- the GetESGbyServiceIds action is extended so that it can have CompanionDeviceId, CompanionDeviceAppId, CompanionDeviceAppVersion state variables as input variables, and have PrimaryDeviceId state variables as output variables in addition to the existing A_ART_TYPE_ESGData_by_ServiceIds state variables.
- the receiver may receive the authentication information and the service IDs according to this action, and if it is determined that it can be delivered, the receiver may transmit the ESG data of the related service to the companion device together with its device ID.
- the companion device may determine whether the received ESG data may be used by referring to the device ID of the received receiver.
- the extended actions may be performed when the user executes an ESG application or the like when the user wants to see the ESG on the companion device.
- the ESG data is delivered as a result of the action, and the ESG data delivered through the ESG application can be exposed.
- extended actions may be performed in a periodic polling manner to store ESG data in the companion device, and then, when the ESG application is executed, the stored ESG data may be exposed to the user.
- the receiver may have ESG data (t63010).
- ESG data may be stored in ESGData state variables.
- ESG data stored in ESGData may be ESG data for two services identified as "atsc.org/esg/service/1" and "atsc.org/esg/service/2" (t63100).
- the user may take a specific action such as executing an ESG application (t63020).
- a specific action can be any action that requires ESG data.
- the companion device may request a list of service IDs through the GetServiceIds action (t63030). At this time, the authentication information may also be delivered to the receiver. The receiver may determine whether the companion device is authenticated using the authentication information (t63040). If authenticated, the receiver may output a ServiceIdsList to the companion device with 200 OK (t63050). In this embodiment, the value of ServiceIdsList may be equal to (atsc.org/esg/service/1, atsc.org/esg/service/2). At this time, the device ID of the receiver may also be delivered. The companion device may determine whether it is a receiver that may request ESG data using the ID of the received receiver (t63060).
- the GetESGbyServiceIds action may be performed using this as an input variable (t63070). At this time, authentication information may also be transmitted to the receiver. In some embodiments, this authentication process may be viewed as a duplicate and omitted. If the authentication process is omitted, the existing general GetESGbyServiceIds action may be performed. If authenticated, the receiver may output A_ART_TYPE_ESGData_by_ServiceIds to the companion device with 200 OK (t63080).
- the value of A_ART_TYPE_ESGData_by_ServiceIds may be ESG data related to a service identified by "atsc.org/esg/service/1" (t63110).
- the Schedule element and Content element having atsc.org/esg/service/1 as the reference value can be included in the output variable.
- the Schedule element and the Content element may be schedule and content information related to a service identified by atsc.org/esg/service/1.
- the companion device may parse the received ESG data and expose the same through the ESG application using the ESG data (t63090).
- the companion device may immediately expose, store, or store the ESG data according to the above-described embodiments.
- the illustrated embodiment corresponds to a case in which a user performs a specific action, but as described above, the action may be performed first (regardless of whether a specific action is performed), and then the user executes an ESG application or the like at a certain point in time. ESG data previously received and stored through the action may be exposed.
- 64 is a diagram illustrating a process of delivering ESG data to a companion device according to the GetService action according to an embodiment of the present invention.
- the frequency of updating such as adding / deleting new services may be small.
- continuously requesting / delivering ESG data about a service can cause unnecessary network overload.
- the NumOfServices state variable, A_ARG_TYPE_ESGData_Service state variable, and GetService action may be defined.
- another embodiment of the above-described GetESGbyServiceIds action may be defined.
- the NumOfServices state variable may be a state variable that stores the total number of services described by the ESG of the receiver.
- the value of this state variable can be referenced when constructing the service list.
- the value of this state variable can be used to check validation when constructing a service list.
- This state variable may be of type integer.
- the A_ARG_TYPE_ESGData_Service state variable may be a state variable that stores only ESG data corresponding to a service element among the ESGs of the receiver.
- This state variable may have a fragment type of a markup language of a specific type for expressing the ESGData state variable. For example, if the ESGData state variable is an XML document, this state variable may have an XML fragment type.
- the GetService action may be an action for the companion device to receive ESG data related to a service among ESG information from the receiver.
- the companion device may receive ESG data (ESG data other than the service element) related to a specific service by using the ESG data (Service elements) delivered through this action.
- ESG data ESG data other than the service element
- the companion device may refer to the total number of services indicated by the NumOfServices state variable and the number of received service elements to construct a service list.
- the above-described authentication procedure can be used. That is, the GetService action may be in an extended form including additional input / output variables for authentication. In some embodiments, the GetService action may be used without additional variables for authentication.
- Input variables of this action may be state variables corresponding to the above-described authentication information.
- the output variable may be a PrimaryDeviceId state variable, a NumOfServices state variable, or an A_ARG_TYPE_ESGData_Service state variable.
- the GetESGbyServiceIds action may be an action for the companion device to receive the remaining ESG data related to the specific service by inputting service IDs of the specific service.
- the remaining ESG data may be ESG data excluding the corresponding service element, that is, ESG data corresponding to the content and schedule elements related to the corresponding service.
- this action may be defined in an extended form including additional variables for the aforementioned authentication.
- the GetService and GetESGbyServiceIds actions may be performed when the user executes an ESG application or the like when the user wants to view the ESG on the companion device.
- the ESG data is delivered as a result of the action, and the ESG data delivered through the ESG application can be exposed.
- the GetService and GetESGbyServiceIds actions are performed in a periodic polling manner to store the ESG data in the companion device. When the ESG application is executed, the stored ESG data may be exposed to the user.
- the receiver may have ESG data (t64010).
- ESG data may be stored in ESGData state variables.
- the ESG data stored in the ESGData may be ESG data about two services identified as "atsc.org/esg/service/1" and "atsc.org/esg/service/2" (t64100).
- the user may take a specific action such as executing an ESG application (t64020).
- a specific action can be any action that requires ESG data.
- the companion device may request ESG data about the service by performing a GetService action (t64030).
- the receiver may output the A_ARG_TYPE_ESGData_Service state variable to the companion device with 200 OK (t64050).
- the A_ARG_TYPE_ESGData_Service state variable may include only ESG data of a service element among ESG data of the receiver (t64110).
- the companion device may determine whether the information is reliable by performing authentication using the device ID of the receiver received together (t64060).
- the companion device may request the remaining ESG data related to the specific service by performing the GetESGbyServiceIds action (t64070).
- the ServiceIdsList input variable value of the GetESGbyServiceIds action may be atsc.org/esg/service/1. If it is determined that the receiver is an authenticated companion device and / or app, the receiver may output an A_ARG_TYPE_ESGData_by_ServiceIds state variable with 200 OK (t64080).
- the A_ARG_TYPE_ESGData_by_ServiceIds state variable output in this embodiment may be ESG data related to a service identified by atsc.org/esg/service/1 (t64120). As shown in the drawing, the Schedule element and the Content element having atsc.org/esg/service/1 as reference values may be included in the output variable.
- the output variable may not contain the Service element itself, identified as atsc.org/esg/service/1.
- the companion device may parse the received ESG data and expose it through an ESG application using the ESG data (t64090).
- the companion device may immediately expose, store, or store the ESG data according to the above-described embodiments.
- the illustrated embodiment corresponds to a case in which a user performs a specific action, but as described above, the action may be performed first (regardless of whether a specific action is performed), and then the user executes an ESG application or the like at a certain point in time. ESG data previously received and stored through the action may be exposed.
- 65 is a diagram illustrating a process of changing a service of a broadcast receiver in a companion device according to a SetChangeChannel action according to an embodiment of the present invention.
- ESG information delivered to the companion device may be exposed to the user through the UI.
- the services that appear in the ESG can be identified and selected by the user.
- information for service change should be delivered to the receiver so that the service can be changed.
- the A_ARG_TYPE_SelectedServiceId state variable and SetChangeChannel action can be defined.
- the A_ARG_TYPE_SelectedServiceId state variable may be a state variable that stores a service ID of a service selected by the user through the ESG on the companion device.
- This state variable may be a string or a specific URI type.
- the SetChangeChannel action may be an action for the companion device to change a service being provided at the receiver.
- the input variable may be an A_ARG_TYPE_SelectedServiceId state variable.
- the user can view the ESG and select a specific service through the companion device.
- the ID of the corresponding service may be stored as an input variable.
- the receiver may change the channel to the service having the corresponding service ID according to the value of the input variable.
- the output variable may be none.
- the receiver may have ESG data (t65010).
- ESG data may be stored in ESGData state variables.
- the user may take specific actions, such as running an ESG application (t65030).
- a specific action can be any action that requires ESG data.
- the companion device may request ESG data and receive ESG data through the aforementioned GetESGData action (t65040).
- the illustrated embodiment corresponds to a case in which a user performs a specific action, but as described above, the action may be performed first (regardless of whether a specific action is performed), and then the user executes an ESG application or the like at a certain point in time. ESG data previously received and stored through the action may be exposed.
- the companion device may parse the received ESG and expose it through the ESG application using the ESG data (t65050).
- the companion device may immediately expose, store, or store the ESG data according to the above-described embodiments.
- the user may select a service through the companion device UI (t65060). For example, the user may have attempted to change to the NBCU channel.
- the companion device may perform a SetChangeChannel action (t65070). Through this action, the service ID corresponding to the NBCU channel may be delivered to the receiver.
- the receiver may change the channel to the corresponding service by using the received service ID (t65080).
- the service may be changed to NBCU and provided to the user (t65090).
- 66 is a diagram illustrating a method for providing a broadcast service according to an embodiment of the present invention.
- the method for providing a broadcast service in a broadcast receiver may include pairing with a companion device and / or receiving an electronic service guide (ESG).
- ESG electronic service guide
- the network interface unit of the broadcast receiver may pair with the companion device (t66010).
- the network interface unit may correspond to the network interface of the above-described broadcast receiver.
- a technique such as UPnP may be used for pairing, but the technique for pairing is not limited thereto.
- the receiving unit of the broadcast receiver may receive the ESG or the specific service guide.
- the receiving unit may be a broadcast interface or a network interface of the above-described broadcast receiver.
- the receiving unit may correspond to a broadcast interface
- the receiving unit may correspond to a network interface. That is, according to an embodiment, the network interface unit and the receiving unit may be the same block / module.
- the ESG may include ESG data relating to at least one broadcast service.
- the ESG data may mean data included in the ESG or elements / properties in the ESG.
- the broadcast service may correspond to the above-described service or channel.
- the ESG data may be service type information, schedule information, related content information, or related component information of at least one or more broadcast services described above.
- the ESG data may be the type property of the above-described service element, or may be a schedule element, a content element, or a component element, respectively.
- the related content and related components may mean content related to a service described by the ESG and a related component.
- the method for providing a broadcast service may further include delivering change information of the received ESG to the companion device. This operation can be performed by the network interface unit described above.
- the change information may include ESG data added, changed or deleted of the received ESG compared to prestored ESG data.
- the change information may be the LastChangedESGData state variable described above.
- the added, modified, or deleted ESG data may correspond to Addition, Modification, and Deletion elements, respectively.
- the method for providing a broadcast service may include transmitting an ID list of broadcast services included in a received ESG to a companion device, wherein the companion device is identified by at least one ID among ID lists.
- the method may further include receiving ESG data related to specific broadcast services and delivering the requested ESG data related to specific broadcast services to the companion device. Delivery of the service ID list may be performed by the aforementioned GetServiceIds action. ESG data request and delivery by ID may be performed by the aforementioned GetESGbyServiceIds action.
- a method of providing a broadcast service comprising: receiving an ID of a broadcast service currently being viewed from a companion device, and transmitting the requested ID of the currently viewed broadcast service to the companion device; Receiving ESG data related to a service currently being viewed; And forwarding the requested currently watching service related ESG data to the companion device; It may further include.
- the ID delivery of the service currently being viewed may be performed by the aforementioned GetCurrentServiceId action.
- ESG data request and delivery by ID may be performed by the aforementioned GetESGbyServiceIds action.
- a method of providing a broadcast service comprising: receiving a search field indicating a specific field of ESG data and a target value for the specific field from a companion device; Selecting, by the control unit, ESG data in which a specific field indicated by the search field has a target value; And delivering the selected ESG data to the companion device.
- the target value for the search field and the specific field may correspond to the aforementioned A_ART_TYPE_SearchField state variable and A_ART_TYPE_TargetValue state variable, respectively.
- ESG data selection and delivery may be performed by the SearchESG action described above.
- the control unit may correspond to the control unit of the main physical device of the broadcast receiver described above.
- a method of providing a broadcast service comprising: receiving authentication information of a companion device from a companion device, wherein the authentication information includes device ID information of the companion device; Verifying, by the authentication module, whether the companion device is authenticated using the authentication information; And when the authentication of the companion device is confirmed, transferring device ID information of the broadcast receiver to the companion device; It may further include.
- the authentication information may correspond to the above-described CompanionDeviceId, CompanionDeviceAppId and / or CompanionDeviceAppVersion state variables.
- the device ID of the broadcast receiver may correspond to the aforementioned PrimaryDeviceId state variable.
- the operation of delivering authentication information, authentication, and receiver device ID may be performed by the above-described DoAuthenticationForESG action.
- the authentication module may be a block / module located in / outside the broadcast receiver to perform an operation related to the aforementioned authentication.
- the authentication module may be merged with the above-described control unit or network interface according to the embodiment.
- the step of delivering an ID list to the companion device includes: receiving a request of an ID list from a companion device, wherein the request of the ID list is authentication of the companion device Includes information; Verifying, by the authentication module, whether the companion device is authenticated using the authentication information; And when the authentication of the companion device is confirmed, transmitting the ID list and the device ID information of the broadcast receiver to the companion device. It may further include.
- This embodiment may correspond to the case where the GetServiceIds action is extended to be able to perform authentication in the above-described embodiment of ESG delivery through the service ID list.
- a method of providing a broadcast service comprising: receiving a request for a change of a broadcast service currently being viewed from a companion device, wherein the broadcast service change request is based on delivered ESG data; And changing, by the control unit, the broadcast service being viewed by the broadcast receiver according to the broadcast service change request.
- Requesting a broadcast change and changing a service based on the broadcast change may be performed by the above-described SetChangeChannel action.
- the above-described method of providing a broadcast service may also be described in terms of a companion device.
- the present invention also includes the case where the above-described embodiments are performed from the perspective of the companion device.
- the companion device may receive change information of the ESG, request an ID list of the service, and receive related ESG data using the ID.
- the companion device may request an ID of a service currently being viewed and use it to receive related ESG data.
- the companion device may receive the matching ESG data by transmitting a search field and a specific value indicating a specific field to the receiver, and may perform authentication by sending authentication information to the receiver.
- the companion device may also request a change in the service being viewed. Communication with the receiver may be performed by the aforementioned network interface inside / outside the companion device.
- the companion device may include an authentication module for performing an authentication related operation.
- Each of the above steps may be omitted or replaced by another step that performs the same or similar operation.
- 67 is a diagram illustrating a broadcast receiver according to an embodiment of the present invention.
- the broadcast receiver may include a network interface unit and / or a receiving unit.
- the broadcast receiver according to another embodiment of the present invention may further include a control unit and / or an authentication module.
- Each block, module, unit is as described above.
- the broadcast receiver and its internal modules / blocks / units may perform embodiments of the method for providing a broadcast service in the above-described broadcast receiver.
- the companion device may include a network interface unit and / or a receiving unit.
- the companion device may further include a control unit and / or an authentication module.
- Each block, module, unit is as described above.
- the companion device and its internal modules / blocks / units may perform embodiments of the method for providing a broadcast service in the aforementioned companion device.
- the above-described blocks / modules / units inside the broadcast receiver and the companion device may be processors for executing consecutive processes stored in a memory, and may be hardware elements located in / outside the device according to an embodiment.
- Each block / module / unit described above may be omitted or replaced by another block / module having the same or similar operation.
- the module or unit may be processors that execute successive procedures stored in a memory (or storage unit). Each of the steps described in the above embodiments may be performed by hardware / processors. Each module / block / unit described in the above embodiments can operate as a hardware / processor.
- the methods proposed by the present invention can be executed as code. This code can be written to a processor readable storage medium and thus read by a processor provided by an apparatus.
- Apparatus and method according to the present invention is not limited to the configuration and method of the embodiments described as described above, the above-described embodiments may be selectively all or part of each embodiment so that various modifications can be made It may be configured in combination.
- the processor-readable recording medium includes all kinds of recording devices that store data that can be read by the processor.
- Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like, and may also be implemented in the form of a carrier wave such as transmission over the Internet.
- the processor-readable recording medium can also be distributed over network coupled computer systems so that the processor-readable code is stored and executed in a distributed fashion.
- the present invention is used in the field of providing a series of broadcast signals.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Engineering & Computer Science (AREA)
- Databases & Information Systems (AREA)
- Computer Hardware Design (AREA)
- Computer Security & Cryptography (AREA)
- Computing Systems (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (18)
- 방송 수신기에서 방송 서비스를 제공하는 방법에 있어서,네트워크 인터페이스 유닛이 컴패니언 디바이스와 페어링하는 단계; 및수신 유닛이 ESG (Electronic Service Guide) 를 수신하는 단계; 를 포함하고,여기서, 상기 ESG 는 적어도 하나 이상의 방송 서비스에 관한 ESG 데이터를 포함하는 방송 서비스 제공 방법.
- 제 1 항에 있어서,상기 ESG 데이터는 상기 적어도 하나 이상의 방송 서비스의 서비스 타입 정보, 스케쥴 정보, 관련 컨텐츠 정보 또는 관련 컴포넌트 정보인 것을 특징으로 하는 방송 서비스 제공 방법.
- 제 1 항에 있어서, 상기 방송 서비스를 제공하는 방법은:상기 ESG 의 변경사항 정보를 상기 컴패니언 디바이스로 전달하는 단계;를 더 포함하고,여기서, 상기 변경사항 정보는 기 저장된 ESG 데이터 대비 상기 수신된 ESG 의 추가, 변경 또는 삭제된 ESG 데이터를 포함하는 것을 특징으로 하는 방송 서비스 제공 방법.
- 제 1 항에 있어서, 상기 방송 서비스를 제공하는 방법은:상기 ESG 가 포함하는 방송 서비스들의 ID 리스트를 상기 컴패니언 디바이스로 전달하는 단계;상기 컴패니언 디바이스로부터, 상기 ID 리스트 중 적어도 하나의 ID 로 식별되는 특정 방송 서비스들과 관련된 ESG 데이터를 요청받는 단계; 및상기 요청된 특정 방송 서비스 관련 ESG 데이터를 상기 컴패니언 디바이스로 전달하는 단계;를 더 포함하는 것을 특징으로 하는 방송 서비스 제공 방법.
- 제 1 항에 있어서, 상기 방송 서비스를 제공하는 방법은:상기 컴패니언 디바이스로부터 현재 시청중인 방송 서비스의 ID 를 요청받고, 상기 요청된 현재 시청중인 방송 서비스의 ID 를 상기 컴패니언 디바이스로 전달하는 단계;상기 현재 시청중인 서비스에 관련된 ESG 데이터를 요청받는 단계; 및상기 요청된 현재 시청중인 서비스 관련 ESG 데이터를 상기 컴패니언 디바이스로 전달하는 단계;를 더 포함하는 것을 특징으로 하는 방송 서비스 제공 방법.
- 제 1 항에 있어서, 상기 방송 서비스를 제공하는 방법은:상기 컴패니언 디바이스로부터 상기 ESG 데이터의 특정 필드를 지시하는 서치 필드 및 상기 특정 필드에 대한 타겟 값을 전달받는 단계;컨트롤 유닛이 상기 서치 필드가 지시하는 특정 필드가 상기 타겟값을 가지는 ESG 데이터를 선별하는 단계; 및상기 선별된 ESG 데이터를 상기 컴패니언 디바이스로 전달하는 단계;를 더 포함하는 것을 특징으로 하는 방송 서비스 제공 방법.
- 제 1 항에 있어서, 상기 방송 서비스를 제공하는 방법은:상기 컴패니언 디바이스로부터 상기 컴패니언 디바이스의 인증 정보를 전달받는 단계, 여기서 상기 인증 정보는 상기 컴패니언 디바이스의 디바이스 ID 정보를 포함하고;인증 모듈이 상기 인증 정보를 이용하여 상기 컴패니언 디바이스의 인증 여부를 확인하는 단계; 및상기 컴패니언 디바이스의 인증이 확인된 경우, 방송 수신기의 디바이스 ID 정보를 상기 컴패니언 디바이스로 전달하는 단계;를 더 포함하는 것을 특징으로 하는 방송 서비스 제공 방법.
- 제 4 항에 있어서, 상기 ID 리스트를 상기 컴패니언 디바이스로 전달하는 단계는:상기 컴패니언 디바이스로부터 상기 ID 리스트의 요청을 받는 단계, 여기서 상기 ID 리스트의 요청은 상기 컴패니언 디바이스의 인증정보를 포함하고;인증 모듈이 상기 인증 정보를 이용하여 상기 컴패니언 디바이스의 인증 여부를 확인하는 단계; 및상기 컴패니언 디바이스의 인증이 확인된 경우, 상기 ID 리스트 및 방송 수신기의 디바이스 ID 정보를 상기 컴패니언 디바이스로 전달하는 단계;를 더 포함하는 것을 특징으로 하는 방송 서비스 제공 방법.
- 제 4 항에 있어서, 상기 방송 서비스를 제공하는 방법은:상기 컴패니언 디바이스로부터 현재 시청중인 방송 서비스의 변경을 요청받는 단계, 여기서 상기 방송 서비스 변경 요청은 상기 전달된 ESG 데이터에 근거하고; 및컨트롤 유닛이 상기 방송 서비스 변경 요청에 따라 방송 수신기에서 시청중인 방송 서비스를 변경하는 단계;를 더 포함하는 것을 특징으로 하는 방송 서비스 제공 방법.
- 방송 서비스를 제공하는 방송 수신기에 있어서,컴패니언 디바이스와 페어링하는 네트워크 인터페이스 유닛; 및ESG (Electronic Service Guide) 를 수신하는 수신 유닛; 을 포함하고,여기서, 상기 ESG 는 적어도 하나 이상의 방송 서비스에 관한 ESG 데이터를 포함하는 방송 수신기.
- 제 10 항에 있어서,상기 ESG 데이터는 상기 적어도 하나 이상의 방송 서비스의 서비스 타입 정보, 스케쥴 정보, 관련 컨텐츠 정보 또는 관련 컴포넌트 정보인 것을 특징으로 하는 방송 수신기.
- 제 10 항에 있어서, 상기 네트워크 인터페이스 유닛은:상기 ESG 의 변경사항 정보를 상기 컴패니언 디바이스로 전달하고,여기서, 상기 변경사항 정보는 기 저장된 ESG 데이터 대비 상기 수신된 ESG 의 추가, 변경 또는 삭제된 ESG 데이터를 포함하는 것을 특징으로 하는 방송 수신기.
- 제 10 항에 있어서, 상기 네트워크 인터페이스 유닛은:상기 ESG 가 포함하는 방송 서비스들의 ID 리스트를 상기 컴패니언 디바이스로 전달하고,상기 컴패니언 디바이스로부터 상기 ID 리스트 중 적어도 하나의 ID 로 식별되는 특정 방송 서비스들과 관련된 ESG 데이터를 요청받고,상기 요청된 특정 방송 서비스 관련 ESG 데이터를 상기 컴패니언 디바이스로 전달하는 것을 특징으로 하는 방송 수신기.
- 제 10 항에 있어서, 상기 네트워크 인터페이스 유닛은:상기 컴패니언 디바이스로부터 현재 시청중인 방송 서비스의 ID 를 요청받고, 상기 요청된 현재 시청중인 방송 서비스의 ID 를 상기 컴패니언 디바이스로 전달하고,상기 현재 시청중인 서비스에 관련된 ESG 데이터를 요청받고,상기 요청된 현재 시청중인 서비스 관련 ESG 데이터를 상기 컴패니언 디바이스로 전달하는 것을 특징으로 하는 방송 수신기.
- 제 10 항에 있어서,상기 네트워크 인터페이스 유닛은 상기 컴패니언 디바이스로부터 상기 ESG 데이터의 특정 필드를 지시하는 서치 필드 및 상기 특정 필드에 대한 타겟 값을 전달하고,상기 방송 수신기는 상기 서치 필드가 지시하는 특정 필드가 상기 타겟값을 가지는 ESG 데이터를 선별하는 컨트롤 유닛을 더 포함하고,상기 네트워크 인터페이스 유닛은 상기 선별된 ESG 데이터를 상기 컴패니언 디바이스로 전달하는 것을 특징으로 하는 방송 수신기.
- 제 10 항에 있어서,상기 네트워크 인터페이스 유닛은 상기 컴패니언 디바이스로부터 상기 컴패니언 디바이스의 인증 정보를 전달받고, 여기서 상기 인증 정보는 상기 컴패니언 디바이스의 디바이스 ID 정보를 포함하고,상기 방송 수신기는 상기 인증 정보를 이용하여 상기 컴패니언 디바이스의 인증 여부를 확인하는 인증 모듈을 더 포함하고,상기 네트워크 인터페이스 유닛은 상기 컴패니언 디바이스의 인증이 확인된 경우, 상기 방송 수신기의 디바이스 ID 정보를 상기 컴패니언 디바이스로 전달하는 것을 특징으로 하는 방송 수신기.
- 제 13 항에 있어서,상기 네트워크 인터페이스 유닛은 상기 컴패니언 디바이스로부터 상기 ID 리스트의 요청을 받고, 여기서 상기 ID 리스트의 요청은 상기 컴패니언 디바이스의 인증정보를 포함하고,상기 방송 수신기는 상기 인증 정보를 이용하여 상기 컴패니언 디바이스의 인증 여부를 확인하는 인증 모듈을 더 포함하고,상기 네트워크 인터페이스 유닛은 상기 컴패니언 디바이스의 인증이 확인된 경우, 상기 ID 리스트 및 상기 방송 수신기의 디바이스 ID 정보를 상기 컴패니언 디바이스로 전달하는 것을 특징으로 하는 방송 수신기.
- 제 13 항에 있어서,상기 네트워크 인터페이스 유닛은 상기 컴패니언 디바이스로부터 현재 시청중인 방송 서비스의 변경을 요청받고, 여기서 상기 방송 서비스 변경 요청은 상기 전달된 ESG 데이터에 근거하고,상기 방송 수신기는 상기 방송 서비스 변경 요청에 따라 상기 방송 수신기에서 시청중인 방송 서비스를 변경하는 컨트롤 유닛을 더 포함하는 것을 특징으로 하는 방송 수신기.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/324,189 US10477276B2 (en) | 2014-07-09 | 2015-07-06 | Broadcasting signal transmission device, broadcasting signal reception device, broadcasting signal transmission method, and broadcasting signal reception method |
KR1020167035293A KR101901944B1 (ko) | 2014-07-09 | 2015-07-06 | 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 |
US16/447,432 US10721535B2 (en) | 2014-07-09 | 2019-06-20 | Broadcasting signal transmission device, broadcasting signal reception device, broadcasting signal transmission method, and broadcasting signal reception method |
US16/894,119 US11128922B2 (en) | 2014-07-09 | 2020-06-05 | Broadcasting signal transmission device, broadcasting signal reception device, broadcasting signal transmission method, and broadcasting signal reception method |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201462022213P | 2014-07-09 | 2014-07-09 | |
US62/022,213 | 2014-07-09 | ||
US201462027795P | 2014-07-23 | 2014-07-23 | |
US62/027,795 | 2014-07-23 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/324,189 A-371-Of-International US10477276B2 (en) | 2014-07-09 | 2015-07-06 | Broadcasting signal transmission device, broadcasting signal reception device, broadcasting signal transmission method, and broadcasting signal reception method |
US16/447,432 Continuation US10721535B2 (en) | 2014-07-09 | 2019-06-20 | Broadcasting signal transmission device, broadcasting signal reception device, broadcasting signal transmission method, and broadcasting signal reception method |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016006884A1 true WO2016006884A1 (ko) | 2016-01-14 |
Family
ID=55064448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2015/006917 WO2016006884A1 (ko) | 2014-07-09 | 2015-07-06 | 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 |
Country Status (3)
Country | Link |
---|---|
US (3) | US10477276B2 (ko) |
KR (1) | KR101901944B1 (ko) |
WO (1) | WO2016006884A1 (ko) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20060124205A (ko) * | 2005-05-31 | 2006-12-05 | 주식회사 팬택 | 디지털멀티미디어방송 알림 서비스 방법 및 시스템 |
KR20070081872A (ko) * | 2006-02-14 | 2007-08-20 | 엘지전자 주식회사 | 전자 프로그램 가이드를 이용한 이동통신 단말기의 방송 정보 서비스 시스템 및 이를 위한 방법 및 이를 위한 이동통신 단말기 |
KR20090065095A (ko) * | 2007-12-17 | 2009-06-22 | 엘지전자 주식회사 | 이동 단말기의 방송정보 표시장치 및 방법 |
KR20090131292A (ko) * | 2007-04-24 | 2009-12-28 | 모토로라 인코포레이티드 | 사용자 개인화된 모바일 비디오 프로그램 리스트 파퓰레이션을 위한 방법 및 장치 |
KR20130020874A (ko) * | 2011-08-21 | 2013-03-04 | 엘지전자 주식회사 | 영상 표시 장치, 단말 장치 및 그 동작 방법 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003504899A (ja) * | 1999-03-15 | 2003-02-04 | インデックス システムズ インコーポレイテッド | ミニガイド実装のためのシステムと方法 |
US20060253874A1 (en) * | 2005-04-01 | 2006-11-09 | Vulcan Inc. | Mobile interface for manipulating multimedia content |
KR100770890B1 (ko) * | 2006-08-18 | 2007-10-26 | 삼성전자주식회사 | 디지털 비디오 방송 단말기의 파일타입 검출장치 및 방법 |
KR20090106292A (ko) * | 2008-04-04 | 2009-10-08 | 삼성전자주식회사 | 방송 시스템에서 사용자 맞춤형 서비스 제공 방법과 장치및 그 시스템 |
US20090253416A1 (en) * | 2008-04-04 | 2009-10-08 | Samsung Electronics Co. Ltd. | Method and system for providing user defined bundle in a mobile broadcast system |
IT1399486B1 (it) | 2010-03-31 | 2013-04-19 | Ima Safe S R L | Perfezionamenti ai gruppi distributori e gruppo distributore perfezionato |
US9584238B2 (en) * | 2011-06-24 | 2017-02-28 | Nokia Corporation | Accessing service guide information in a digital video broadcast system |
US20130031585A1 (en) * | 2011-07-29 | 2013-01-31 | Hitachi Consumer Electronics Co., Ltd. | Portable terminal, system, information processing method and program |
US9191707B2 (en) * | 2012-11-08 | 2015-11-17 | Bank Of America Corporation | Automatic display of user-specific financial information based on audio content recognition |
US10454985B2 (en) * | 2015-03-04 | 2019-10-22 | Qualcomm Incorporated | File format based streaming with dash formats based on LCT |
-
2015
- 2015-07-06 WO PCT/KR2015/006917 patent/WO2016006884A1/ko active Application Filing
- 2015-07-06 US US15/324,189 patent/US10477276B2/en active Active
- 2015-07-06 KR KR1020167035293A patent/KR101901944B1/ko active Active
-
2019
- 2019-06-20 US US16/447,432 patent/US10721535B2/en active Active
-
2020
- 2020-06-05 US US16/894,119 patent/US11128922B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20060124205A (ko) * | 2005-05-31 | 2006-12-05 | 주식회사 팬택 | 디지털멀티미디어방송 알림 서비스 방법 및 시스템 |
KR20070081872A (ko) * | 2006-02-14 | 2007-08-20 | 엘지전자 주식회사 | 전자 프로그램 가이드를 이용한 이동통신 단말기의 방송 정보 서비스 시스템 및 이를 위한 방법 및 이를 위한 이동통신 단말기 |
KR20090131292A (ko) * | 2007-04-24 | 2009-12-28 | 모토로라 인코포레이티드 | 사용자 개인화된 모바일 비디오 프로그램 리스트 파퓰레이션을 위한 방법 및 장치 |
KR20090065095A (ko) * | 2007-12-17 | 2009-06-22 | 엘지전자 주식회사 | 이동 단말기의 방송정보 표시장치 및 방법 |
KR20130020874A (ko) * | 2011-08-21 | 2013-03-04 | 엘지전자 주식회사 | 영상 표시 장치, 단말 장치 및 그 동작 방법 |
Also Published As
Publication number | Publication date |
---|---|
KR20170016866A (ko) | 2017-02-14 |
US20200304878A1 (en) | 2020-09-24 |
US10477276B2 (en) | 2019-11-12 |
US20190306582A1 (en) | 2019-10-03 |
KR101901944B1 (ko) | 2018-09-28 |
US10721535B2 (en) | 2020-07-21 |
US11128922B2 (en) | 2021-09-21 |
US20170289636A1 (en) | 2017-10-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2015178603A1 (ko) | 방송 전송 장치, 방송 전송 장치의 동작 방법. 방송 수신 장치 및 방송 수신 장치의 동작 방법 | |
WO2015084004A1 (en) | Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals | |
WO2016010404A1 (ko) | 방송 송신 장치, 방송 송신 장치의 데이터 처리 방법, 방송 수신 장치 및 방송 수신 장치의 데이터 처리 방법 | |
WO2016028119A1 (ko) | 방송 신호 송신 방법, 방송 신호 송신 장치, 방송 신호 수신 방법 및 방송 신호 수신 장치 | |
WO2015102395A1 (en) | Broadcast receiving device and operating method thereof | |
WO2015102381A1 (en) | Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals | |
WO2016060410A1 (ko) | 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 | |
WO2015167190A1 (ko) | 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 | |
WO2015156625A1 (ko) | 방송 전송 장치, 방송 수신 장치, 방송 전송 장치의 동작 방법 및 방송 수신 장치의 동작 방법 | |
WO2015115842A1 (en) | Broadcast receiving device and operating method thereof | |
WO2015178690A1 (ko) | 방송 신호 송/수신 처리 방법 및 장치 | |
WO2015190791A1 (ko) | 서비스 가이드 정보 송신 방법, 서비스 가이드 정보 수신 방법, 서비스 가이드 정보 송신 장치 및 서비스 가이드 정보 수신 장치 | |
WO2015105400A1 (en) | Apparatuses and methods for transmitting or receiving a broadcast content via one or more networks | |
WO2016028052A2 (ko) | 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 | |
WO2015108305A1 (en) | Method and apparatus for transmitting/receiving broadcasting signal including robust header compression packet stream and fast information | |
WO2015167177A1 (ko) | 방송 전송 장치, 방송 수신 장치, 방송 전송 장치의 동작 방법 및 방송 수신 장치의 동작 방법 | |
WO2016048090A1 (ko) | 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 | |
WO2015156618A1 (ko) | 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 | |
WO2015156607A1 (ko) | 방송 신호 송/수신 처리 방법 및 장치 | |
WO2016068564A1 (ko) | 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 | |
WO2015199439A1 (ko) | 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 | |
WO2016036167A1 (ko) | 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 | |
WO2016028118A1 (ko) | 방송 전송 장치, 방송 전송 장치의 동작 방법. 방송 수신 장치 및 방송 수신 장치의 동작 방법 | |
WO2016114638A1 (ko) | 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 | |
WO2016039555A1 (ko) | 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15818410 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 20167035293 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15324189 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 15818410 Country of ref document: EP Kind code of ref document: A1 |