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CN102301624A - Local broadcast of data using available channels of a spectrum - Google Patents

Local broadcast of data using available channels of a spectrum Download PDF

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Publication number
CN102301624A
CN102301624A CN2010800060746A CN201080006074A CN102301624A CN 102301624 A CN102301624 A CN 102301624A CN 2010800060746 A CN2010800060746 A CN 2010800060746A CN 201080006074 A CN201080006074 A CN 201080006074A CN 102301624 A CN102301624 A CN 102301624A
Authority
CN
China
Prior art keywords
channel
available channel
data
communicator
identification
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2010800060746A
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Chinese (zh)
Inventor
育·艾伯特·王
维贾亚拉克什米·R·拉温德朗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US12/547,834 external-priority patent/US8374134B2/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority to CN201610663213.1A priority Critical patent/CN106603180A/en
Publication of CN102301624A publication Critical patent/CN102301624A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
    • H04H20/63—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast to plural spots in a confined site, e.g. MATV [Master Antenna Television]
    • 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
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/38—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space
    • H04H60/41—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
    • H04H60/78—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by source locations or destination locations
    • H04H60/80—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by source locations or destination locations characterised by transmission among terminal devices
    • 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
    • H04N21/23—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
    • H04N21/2385—Channel allocation; Bandwidth allocation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/49—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations
    • H04H60/51—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations of receiving stations

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

In general, this disclosure relates to techniques for transmitting data for applications using one or more available channels of a spectrum. One example method comprises transforming data into a digital broadcast format, identifying at least one available channel of a spectrum, and transmitting the transformed data in the at least one identified available channel.

Description

Utilize the spot broadcasting of data of the available channel of frequency spectrum
The application's case is advocated the U.S. Provisional Application case 61/148 of being applied on February 3rd, 2009,872, the U.S. Provisional Application case 61/222 of being applied on July 2nd, 2009, the U.S. Provisional Application case 61/230 that on July 31st, 845 and 2009 was applied for, 602 rights and interests, the full content of each in the described application case is incorporated herein by reference.
Technical field
The present invention relates to the emission of data on radio network.
Background technology
At present, for example some solutions of the wireless demonstration that is used for multi-medium data of radio HDMI (HDMI (High Definition Multimedia Interface)) are in exploitation.The main intention of these solutions is to replace the HDMI cable between specific components (for example, set-top box, digital versatile disc (DVD) player, calculation element) and the display unit.
Some provider has developed the solution of the proprietary method of the emission that is used for uncompressed video.Other solution can consumer electronics device (for example, game machine or DVD player) needs specialized hardware for target and at host computer side and client-side on both.The power consumption of these isolated plants may be very high.In addition, in some solution, the emission of uncompressed video may limit any extended capability of supporting the higher resolution data emission.
Summary of the invention
Generally speaking, the present invention relates to be used to utilize one or more available channels of frequency spectrum to launch the technology that is used for application's data.The data that some technology can promote to use the available channel through identification of frequency spectrum will be used for various service/application are wirelessly transmitted to external device (ED) from one or more devices (for example, mobile device or handheld type devices).For instance, mobile device can utilize the available channel on the television band spectrum that some multi-medium data is transmitted into display unit.
A kind of case method comprises: data transaction is become digital broadcast formats; At least one available channel of identification frequency spectrum; And it is described through data converted in described at least one emission in the available channel of identification.
A kind of instance communications device comprises converting unit, channel identification device and digit emitter.Described converting unit is configured to data transaction is become digital broadcast formats.Described channel identification device is configured to discern at least one available channel of frequency spectrum.Described digit emitter is configured in described at least one emission in the available channel of identification described through data converted.
A kind of example calculation machine readable memory medium is encoded to be useful on the instruction that makes one or more processors carry out following action: data transaction is become digital broadcast formats; At least one available channel of identification frequency spectrum; And it is described through data converted in described at least one emission in the available channel of identification.
Can hardware, software, firmware or its any combination implement technology described in the present invention.For instance, various technology can be implemented or execution by one or more processors.Such as herein utilization, processor can refer to microprocessor, application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA), digital signal processor (DSP) or the integrated or discrete logic of other equivalence.Software can be carried out by one or more processors.Comprise that the instruction software of carrying out described technology can be stored in the computer-readable media at first and load and carry out by processor.
Therefore, the present invention is also contained to comprise and is made processor carry out any one the computer-readable storage medium of instruction in the multiple technologies as described in the present invention.In some cases, described computer-readable storage medium can form the part of computer program storage products, can sell described computer program storage products to manufacturer and/or is used for device.Computer program can comprise computer-readable media, and in some cases, can also comprise encapsulating material.
Illustrate the details aspect one or more in following alterations and in describing.Further feature, target and advantage will be by described descriptions and graphic and apparent by claims.
Description of drawings
Fig. 1 is coupled to the block diagram of an example of the communicator of data sink with communication mode via wireless network for explanation.
Fig. 2 is coupled to the block diagram of an example of the multimedia communication device of one or more multimedia receivers and one or more multimedia output devices with communication mode via wireless network for explanation.
Fig. 3 is coupled to the block diagram of an example of the multimedia communication device of one or more digital TV receivers and one or more display unit with communication mode via wireless network for explanation.
Fig. 4 can be used as the block diagram of an example of the mobile multimedia communication device of the multimedia communication device of being showed among Fig. 2 and/or Fig. 3 for explanation.
Fig. 5 may be implemented in digital TV processor in the mobile multimedia communication device (for example, the mobile multimedia communication device of being showed among Fig. 4) and the modulator/transmitter block diagram together with an example of channel identification device for explanation.
Fig. 6 may be implemented in digital TV processor in the mobile multimedia communication device (for example, the mobile multimedia communication device of being showed among Fig. 4) and the modulator/transmitter block diagram together with another example of channel identification device for explanation.
Fig. 7 is the block diagram of an example of a plurality of multimedia communication devices of explanation, and one of them multimedia communication device serves as the main device that is coupled to digital TV frequency band (geographical position) database, and wherein remains multimedia communication device and serve as client terminal device.
Fig. 8 is the flow chart of an example of a method, described method can be carried out not use spot broadcasting media data on the channel of identification in the part at the digital TV broadcasting frequency spectrum by multimedia communication device (for example, in the multimedia communication device of being showed among Fig. 1 to Fig. 4 one or more).
Fig. 9 is the flow chart of an example of a method, described method can be carried out to utilize spectral sensor and randomly from digital TV frequency band (geographical position) the information Recognition available channel that database was received by multimedia communication device (for example, in the multimedia communication device of being showed among Fig. 1 to Fig. 4 one or more).
Embodiment
Fig. 1 is the block diagram of an example of explanation communicator, and described communicator is coupled to data sink via wireless network with communication mode.Communicator 1 can send to data (for example, multimedia) data sink 9 and/or receive data from data sink 9.In some cases, data can comprise at least one the multi-medium data that comprises in voice data, video data, text data, speech data and the graph data.In the example of Fig. 1, though communicator 1 only is shown as data sent to a data receiver 9 via wireless network 7, but in some cases, communicator 1 also may send or be broadcast to one or more data sinks (comprising data sink 9) with data via wireless network 7.
In some instances, wireless network 7 can comprise network, it provides in the support that is used for the communication on the frequency spectrum of digital broadcast formats, only give some instances, digital broadcast formats for example is Advanced Television Systems Committee (ATSC) form, digital video broadcasting (DVB) form, T-DMB (T-DMB) form, integrated service digits broadcasting (ISDB-T) form in ground or animation expert group transportation flow (MPEG-TS) form (being provided by international standard ISO/IEC 13818-1), as will be described in more detail in the following.(the DVB standard is to be used for one of Digital Television to overlap the Open Standard of accepting in the world, and is issued by the joint technical committee (JTC) of ETSI European Telecommunications Standards Institute (ETSI), the European electrotechnics standardization committee (CENELEC) and European Broadcasting Union (EBU).DMB is the digital radio lift-off technology that is used for multi-medium data is sent to mobile device.) digital broadcast formats the data that do not provide in the data of being launched or launched is provided do not specify broadcasting format concrete or specific purpose ground.For instance, the digital broadcast formats header that can comprise the packet of being broadcasted or unit does not comprise the form of any destination-address.
Communicator 1 can be included in the specified location emission or receive the fixture of data, or mobile device.Communicator 1 can comprise isolated system or can be the part of big system.For instance, communicator 1 (for example can comprise the wireless multimedia communication device, wireless mobile handset), digital camera, digital TV, video camera, visual telephone, digital multimedia player, PDA(Personal Digital Assistant), video game machine, personal computer or laptop devices or other video-unit, or be the part of said apparatus.Communicator 1 also can be included in one or more integrated circuits or chip in some or all that can be used in the said apparatus.
Such as among Fig. 1 displaying, communicator 1 can comprise the digital data conversion unit/reflector 3 that is coupled to channel identification device 5.Though digital data conversion unit/reflector 3 and channel identification device 5 are shown as in the communicator 1 that is included among Fig. 1, may may not in all examples, the one or both in these assemblies 3,5 all need to be included in the communicator 1.For instance, in some cases, these assemblies 3,5 can be included in the isolated system or peripheral unit that is coupled to communicator 1.Therefore, digital data conversion unit/reflector 3 and channel identification device 5 can be the part of one or more devices, and one in described one or more devices can be communicator 1.In Fig. 1, only for illustrative purposes, will suppose that in this example these assemblies 3,5 are the part of communicator 1.
Communicator 1 can receive, handles and produce data.For instance, communicator 1 can receive data on many possible radio or in the access network (comprising honeycomb fashion, local wireless or broadcasting format (comprising ATSC, DVB or T-DMB)) any one.In some instances, communicator 1 can receive data on wireline interface or via one or more embedded interfaces.Use for camera or other Video Camera, also can press uncompressed form and produce data via the image/video transducer.In some instances, data can comprise one or more in voice data, video data, graph data, text data, speech data or the metadata.
Communicator 1 further can arrive one or more other devices (for example, data sink 9) with data broadcasting via wireless network 7.Digital data conversion unit/reflector 3 can become data transaction the optional network specific digit broadcasting format.For instance, digital data conversion unit/reflector 3 may be able to be encoded in accordance with optional network specific digit broadcasting format () data for example, ATSC, DVB, T-DMB, and modulate encoded data.
Channel identification device 5 can be discerned at least one available channel of frequency spectrum, wherein installs 1 identification that can participate in described at least one available channel.For instance, the identification of described at least one available channel can be initial by communicator 1.In some instances, the channel identification device can be discerned at least one available channel in not using of broadcast spectrum (for example, digital television broadcasting frequency spectrum) and/or the unauthorized part.In some instances, described at least one available channel can comprise the television band white space.As by Federal Communications Committee (FCC) on November 4th, 2008 formally by and on November 14th, 2008 as " report for the second time and order and the memorandum suggestion and the order (Second Report and Order and Memorandum Opinion and Order) " of FCC order 08-260 issue in regulation, it is current not by through licensed service utilization and the not use that therefore can be utilized by unauthorized transmitting set partly or the position that " white space " can comprise broadcast television spectrum.
In some instances, available channel can comprise current unappropriated channel.In one example, available channel can comprise current not by any channel through mandate or the user through permitting (for example, obtaining the user of FCC permission) utilization.In one example, available channel can comprise current not by through the user of permission or the channel that is utilized by unauthorized user (for example, other white space channel user).In some cases, available channel can be included in and obtain the channel that can be utilized by the user at once from another after the secondary permission of permitted user.
In some cases, channel identification device 8 can come a plurality of available channels that recognition data is broadcasted may be needed based on any specific requirement or the demand of application program of carrying out or service on communicator 1.In one example, available channel be current not by the geographical location identical with communicator 1 or near the authorized user channel that utilizes and can accept to utilize by communicator 1.
Behind described one or more available channels of identification, converting unit/reflector 3 at once can will be through (for example, encoded, modulated) data transmission of conversion to data sink 9 via wireless network 7 in available channel of identification at least one.In some cases, communicator 1 will be based on the execution of one or more services of local runtime on communicator 1 or application program and is imported automatically or via the user and to carry out one or more in the above-mentioned action.In some cases, data sink 9 can comprise and is used for the functional of broadcast data that demodulation and/or decoding receive from communicator 1.In some cases, converting unit/reflector 3 can at least one through identification available channel in via wireless network 7 with data broadcasting to a plurality of data sinks (comprising data sink 9).
As mentioned above, channel identification device 5 can be discerned at least one available channel of the broadcast spectrum that is used for the optional network specific digit broadcasting format.In one example, channel identification device 5 can comprise spectral sensor, and described spectral sensor is in order to discern at least one available channel by one or more range of channels in the sensing broadcast spectrum or the signal message in the frequency band.In one example, but channel identification device 5 access databases (for example, digital TV frequency band database, for example, and the digital TV frequency band database of in Fig. 5, being showed) to discern at least one available channel.
Fig. 2 is the block diagram that the example of the multimedia communication device 4 that can comprise channel identification device 8 is described, described multimedia communication device is coupled to one or more communication sinks 12A-12N and one or more multimedia output devices 14A-14N via wireless network 10 with communication mode.Multimedia communication device 4 can send to data (for example, multimedia) one or more receivers 12A-12N and/or receive data from one or more receivers 12A-12N.In some cases, data can comprise at least one the multi-medium data that comprises in voice data, video data, text data, speech data and the graph data.
In some instances, the network that provides in the support that is used for the communication on the broadcast spectrum of digital broadcast formats can be provided wireless network 10, only give some instances, digital broadcast formats for example is Advanced Television Systems Committee (ATSC) form, digital video broadcasting (DVB) or T-DMB (T-DMB) form, as will be described in more detail in the following.(the DVB standard is to be used for one of Digital Television to overlap the Open Standard of accepting in the world, and is issued by the joint technical committee (JTC) of ETSI European Telecommunications Standards Institute (ETSI), the European electrotechnics standardization committee (CENELEC) and European Broadcasting Union (EBU).DMB is the digital radio lift-off technology that is used for multi-medium data is sent to mobile device.)
Multimedia communication device 4 can be included in the specified location emission or receive the fixture of data, or mobile device.Multimedia communication device 4 can comprise isolated system or can be the part of big system.For instance, multimedia communication device 4 (for example can comprise the wireless multimedia communication device, wireless mobile handset), digital camera, digital TV, video camera, visual telephone, digital multimedia player, PDA(Personal Digital Assistant), video game machine, personal computer or laptop devices or other video-unit, or be the part of said apparatus.Multimedia communication device 4 also can be included in one or more integrated circuits or chip in some or all that can be used in the said apparatus.
Such as among Fig. 2 displaying, multimedia communication device 4 can comprise the digital multimedia converting unit/reflector 6 that is coupled to multimedia channel identifier 8.Though digital multimedia converting unit/reflector 6 and multimedia channel identifier 8 are shown as in the multimedia communication device 4 that is included among Fig. 2, may may not in all examples, the one or both in these assemblies 6,8 all need to be included in the multimedia communication device 4.For instance, in some cases, these assemblies 6,8 can be included in the isolated system or peripheral unit that is coupled to multimedia communication device 4.Therefore, digital multimedia converting unit/reflector 6 and multimedia channel identifier 8 can be the part of one or more devices, and one in described one or more devices can be multimedia communication device 4.In Fig. 2, only for illustrative purposes, will suppose that in this example these assemblies 6,8 are the part of multimedia communication device 4.
Multimedia communication device 4 can receive, handles and produce multi-medium data.For instance, communicator 4 can be on many possible radio or in the access network (comprising honeycomb fashion, local wireless or broadcasting format (comprising ATSC, DVB or T-DMB)) any one receiving multimedia data.Use for camera or other Video Camera, also can press uncompressed form and produce multi-medium data via the image/video transducer.In some instances, multi-medium data can comprise one or more in voice data, video data, graph data, text data, speech data or the metadata.
Multimedia communication device 4 further can arrive one or more other devices (for example, multimedia output device 14A-14N) with multimedia data broadcast via wireless network 10.Digital multimedia converting unit/reflector 6 can convert multi-medium data to the optional network specific digit broadcasting format.For instance, digital multimedia converting unit/reflector 6 may be able to be encoded in accordance with optional network specific digit broadcasting format () multi-medium data for example, ATSC, DVB, T-DMB, and modulate encoded multi-medium data.
Multimedia channel identifier 8 can be discerned at least one available channel of frequency spectrum, wherein discerns by multimedia communication device 4 initial.In some cases, multimedia channel identifier 8 can be discerned a plurality of available channels that multimedia broadcasting may need based on the application program of carrying out or any specific requirement or the demand of service on multimedia communication device 4.In one example, available channel be current not by the geographical location identical with multimedia communication device 4 or near the authorized user channel that utilizes and can accept to utilize by multimedia communication device 4.
Behind described one or more available channels of identification, converting unit/reflector 6 at once can will be through one or more in the multimedia output device 14A-14N of (for example, encoded, modulated) data transmission of conversion via wireless network 10 in available channel of identification at least one.In some cases, multimedia communication device 4 will be based on the operation of local one or more services carried out or application program on multimedia communication device 4 and import automatically or via the user and to carry out one or more in the above-mentioned action.
For instance, in one example, application program can be determined only will specify content of multimedia to be broadcast to multimedia output device 14A via wireless network 10.Multimedia receiver 12A can receive broadcast data, and can comprise with multimedia receiver 12A be tuned to the suitable tuner of channel, just via described suitable channel from multimedia communication device 4 broadcast datas.Multimedia receiver 12A then is provided to the data that received multimedia output device 14A to be used for processing (for example, being used for showing).
In another example, application program can determine will to specify concurrently content of multimedia to be broadcast to many persons (for example, simultaneously video data being transmitted into a plurality of display unit) among the multimedia output device 14A-14N.In such cases, multimedia receiver 12A-12N can receive broadcast data separately, and can comprise separately one be tuned to suitably channel () tuner for example, frequency or frequency band, just via described suitable channel from multimedia communication device 4 broadcast datas.Each multimedia receiver 12A-12N then is provided to the data that received its corresponding multimedia output device 14A-14N to be used for processing.
In some cases, multimedia receiver 12A-12N can comprise and is used for the functional of broadcast data that demodulation and/or decoding receive from multimedia communication device 4.In some cases, multimedia output device 14A-14N can comprise that this is functional.But one or more each self-contained external device (ED) among the multimedia output device 14A-14N with respect to its corresponding multimedia receiver 12A-12N.In some instances, the part of one or more its corresponding multimedia receiver 12A-12N that can respectively do for oneself among the multimedia output device 14A-14N or be integrated in its corresponding multimedia receiver 12A-12N.
As mentioned above, multimedia channel identifier 8 can be discerned at least one available channel of the broadcast spectrum that is used for the optional network specific digit broadcasting format.In one example, multimedia channel identifier 8 can comprise spectral sensor, and described spectral sensor is in order to discern at least one available channel by one or more range of channels in the sensing broadcast spectrum or the signal message in the frequency band.In one example, but multimedia channel identifier 8 access databases (for example, digital TV frequency band database, for example, and the digital TV frequency band database of in Fig. 5, being showed) to discern at least one available channel.
For instance, multimedia communication device 4 can comprise geographic positioning functionality, and multimedia communication device 4 can determine that its geographical position is (for example, by utilizing global positioning system (GPS) or other similar assembly whereby; Pilot signal or other location technology).In this example, multimedia communication device 4 can be provided to this positional information digital TV frequency band database.Numeral TV frequency band database can be filled with location-based channel information, and the tabulation of the current any available channel that is taken by multimedia communication device 4 that may be in multimedia communication device 4 provides described geographic area.
Can provide some advantage from the one or more broadcasting multimedia datas of multimedia communication device 4 to multimedia output device 14A-14N.For instance, can be similar to distributed reflector network (but having potential less problem) set up from multimedia communication device 4 to multimedia output device 14A-14N spot broadcasting (for example, when the position of these devices near the time, for example in a house or building).Because broadcasting can be limited to short distance, even use potential sight line type to propagate, therefore can avoid stationary problem.
Again, if multimedia communication device 4 comprises one or more television equipments for mobile device and multimedia output device 14A-14N, then communicator 4 just can extend to mobile multimedia content one or more television equipments easily, and do not need physically communicator 4 to be coupled to output device 14A-14N (for example, by utilizing HDMI, VGA or other audiovisual cable).In addition, communicator 4 can be broadcast to digital TV content a plurality of television equipments (for example, in having a family of a plurality of television sets) simultaneously.
Therefore, under a kind of scene, the user can use multimedia communication device 4 with multimedia data broadcast to other in same position or not at the multimedia output device 14A-14N of same position.For instance, the user can be provided with wireless network so that multimedia communication device 4 is coupled to other device in user's family.In one example, multimedia communication device 4 can comprise personal computer or laptop computer.The user may wish that the multi-medium data that will be handled by multimedia communication device 4 (for example, individual (personal presentation), TV programme or film, Web content, stream-type video, the digital photo performed) be transmitted into one or more TVs (in one or more rooms of for example, staying at home).Multimedia communication device 4 can discern one or more available channels with this multimedia data broadcast to this or one with on TV, this is provided at the convenient manner that under the situation that need not to utilize any electric wire or other physical connection content is extended to TV (for example, large-screen and/or high definition TV) from computer.
Fig. 3 is the block diagram that an example of the multimedia communication device 16 that can comprise digital TV channel identification device 20 is described, described multimedia communication device 16 is coupled to one or more digital TV receiver 24A-24N and one or more display unit 26A-26N via wireless network 22 with communication mode.In Fig. 3, the digital TV channel identification device 20 of multimedia communication device 16 is an example of multimedia channel identifier (for example, the multimedia channel identifier 8 of the multimedia communication device of being showed among Fig. 2 4).Display unit 26A-26N is the example of multimedia output device (the multimedia output device 14A-14N that for example, is showed among Fig. 2).
Such as among Fig. 3 displaying, multimedia communication device 16 comprises the digital TV converting unit/reflector 18 that is coupled to digital TV channel identification device 20.Though digital TV converting unit/reflector 18 and digital TV channel identification device 20 are shown as in the multimedia communication device 16 that is included among Fig. 3, may may not in all examples, the one or both in these assemblies 18,20 all need to be included in the multimedia communication device 16.For instance, in some cases, these assemblies 18,20 can be included in the isolated system or peripheral unit that is coupled to multimedia communication device 16.Therefore, digital TV converting unit/reflector 18 and digital TV channel identification device 20 can be the part of one or more devices, and one in described one or more devices can be multimedia communication device 16.In Fig. 3, only for illustrative purposes, will suppose that in this example these assemblies 18,20 are the part of multimedia communication device 16.
Multimedia communication device 16 can receive, handles and produce multi-medium data.Multimedia communication device 16 further can arrive one or more other devices with multimedia data broadcast via wireless network 22, for example, and display unit 26A-26N.Numeral TV converting unit/reflector 6 can convert multi-medium data to digital broadcast formats, and (for example, coding is observed optional network specific digit broadcasting TV form (for example, multi-medium data ATSC), and modulate encoded multi-medium data).
Numeral TV channel identification device 20 can be discerned at least one available TV channel that does not use part of the broadcasting TV frequency spectrum that is used for optional network specific digit broadcasting TV form, and wherein this identification is initial by multimedia communication device 16.In some cases, digital TV channel identification device 20 can be discerned a plurality of available channels that multimedia broadcasting may need based on the application program of carrying out or any specific requirement or the demand of service on multimedia communication device 16.
Behind described one or more available channels of identification, converting unit/reflector 18 can utilize at least one available channel through identification will be transmitted into one or more among the display unit 26A-26N through data converted (for example, encoded, modulated multi-medium data) via wireless network 22 at once.In some cases, multimedia communication device 16 will be based on the execution of one or more services of local runtime on multimedia communication device 16 or application program and import one or more in the initial aforesaid operations automatically or via the user.
Fig. 4 is the block diagram of an example of explanation mobile multimedia communication device 30, the multimedia communication device of being showed among the multimedia communication device 4 that described mobile multimedia communication device 30 can be used as among Fig. 2 to be showed and/or Fig. 3 16.Mobile multimedia communication device 30 comprises mobile device, for example, and radio communication device or hand-held set.
Such as in the example of Fig. 4 displaying, mobile multimedia communication device 30 comprises various assemblies.For instance, in this particular instance, mobile multimedia communication device 30 comprises one or more multimedia processors 32, a display processor 34, an audio frequency output processor 36, an embedded display 38, embedded loud speaker 40, one digital TV converting unit/reflector 42 and a channel identification device 44.Multimedia processor 32 can comprise one or more video processors, one or more audio process and one or more graphic process unit.In the processor that comprises in the multimedia processor 32 each can comprise one or more decoders.
Multimedia processor 32 be coupled to display processor 34 and audio frequency output processor 36 both.Video that comprises in the multimedia processor 32 and/or graphic process unit can produce through be provided to image and/or the figure multi-medium data of display processor 34 to be used for further handling and showing on embedded display 38.For instance, display processor 34 can be carried out one or more operations to image and/or graph data, and for example, bi-directional scaling, rotation, color conversion, cutting or other are played up operation.Any audio process that comprises in the multimedia processor 32 can produce through being provided to audio frequency output processor 36 to be used for further handling and outputing to the audio frequency multi-medium data of embedded loud speaker 40.Therefore the user of mobile multimedia communication device 30 can check and hear the expression of multi-medium data via embedded display 38 and embedded loud speaker 40.
Be provided to the embedded display 38 except exporting multi-medium data, display processor 34 also can be provided to its output digital TV converting unit/reflector 42.In addition, audio frequency output processor 36 can be provided to its output digital TV converting unit/reflector 42.As a result, digital TV converting unit/reflector 42 can be handled a plurality of multimedia data streams.In some instances, display processor 34 and/or audio frequency output processor 36 can be stored in corresponding output multi-medium data in one or more buffers, follow by described one or more buffers of digital TV converting unit/reflector 42 accesses with retrieve data.Numeral TV converting unit/reflector 42 can comprise and be used for multi-medium data is converted to the optional network specific digit forms of broadcasting (for example, coding, modulating data) and will through data converted be transmitted into the various assemblies (as following referring to Fig. 5 in more detail describe) of another device via wireless network at one or more in the available channel of identification.
In some cases, the indivedual single program transportation flow that a plurality of multi-medium data stream translation of receiving from display processor 34 and audio frequency output processor 36 and/or capsule Feng Chengke can be launched at a plurality of broadcast channels of digital TV converting unit/reflector 42.In some cases, described a plurality of multimedia data stream can be encapsulated in the same transportation flow and in single channel and launch.Can be with a media stream as comprising about the complementarity multimedia messages of multi-medium data or picture-in-picture (PIP) the data path emission of metadata.Metadata can comprise one or more in (for example) text, notification message, program guidance information or the menu information.In some cases, digital TV converting unit/reflector 42 can directly receive data from multimedia processor 32.In these cases, digital TV converting unit/reflector 42 can seal into missile transportation flow with data transaction and/or the capsule that directly receives from multimedia processor.
For make mobile multimedia communication device 30 can via wireless network with one or more stream in multimedia data broadcast or otherwise be transmitted into remote-control device, after initial by mobile multimedia communication device 30, what mobile multimedia communication device 30 was discerned frequency spectrum at once does not use one or more available channels in the part.Channel identification device 44 can be discerned this or an above available channel.
As below with reference to channel identification process more detailed description, channel identification device 44 can one or more modes be discerned available channel.For instance, channel identification device 44 can use spectral sensor (for example, the spectral sensor of being showed) in Fig. 5 or Fig. 6, and described spectral sensor is the available channel in one or more frequency bands of sensing dynamically.Spectral sensor may be able to be assigned some mass value (for example, interference level, signal to noise ratio) about the signal that senses, so that determine the quality of any available channel that is used for data transmission in the frequency spectrum.Can periodically carry out the sensing algorithm, and the sensing algorithm can be based on the form of the particular video stream that just is being subject to processing.
Channel identification device 44 also can use (cooperate with spectrum-sensing or independently) geographic positioning functionality.Geo-location refers to mobile multimedia communication device 30 via utilizing the geographic position sensors (for example, the geographic position sensors of being showed among Fig. 5) that can comprise (in one example) GPS transducer to determine the ability of its geographical coordinate.Channel identification device 44 can be inquired about external digital channel database (for example, digital TV frequency band database, the digital TV frequency band database of for example being showed among Fig. 5) to obtain the tabulation of available channel via radio communication.Usually, this outside database can be safeguarded by one or more external device (ED)s or source, but can be based on upgrading from the request of various devices (for example, the mobile multimedia communication device 30) and data flow.
In one example, channel identification device 44 can (for example) connects and will send to the external digital channel database about the geographical position coordinates of the position of mobile multimedia communication device 30 via network (for example, wireless network).Channel identification device 44 can then receive the tabulation of the available channel of the geographic area that is associated with the position (as indicated by geographical position coordinates) of mobile multimedia communication device 30 from external data base.Channel identification device 44 can then be selected one or more for utilization in the channel of identification, and will send back to external data base to the data of the expection utilization of these frequency channels about mobile multimedia communication device 30.Therefore, can be correspondingly based on the Data Update external data base that receives from mobile multimedia communication device 30.
In some cases, external data base is in case through upgrading, just can indicate selected channel to be moved multimedia communication device 30 utilization, up to mobile multimedia communication device 30 will indicate no longer need or do not utilizing the subsequent message of described channel to send to external data base till.In other cases, external data base can only be preserved for the selected channel of device 30 in the time cycle of defining.In these cases, device 30 may still just utilize the message of selected channel to send to external data base indicating device 30 in the described time cycle of defining, under described situation, external data base will recover the reservation of selected channel is utilized with supplying apparatus 30 in second time cycle.
In some instances, channel identification device 44 can based on the bandwidth requirement of any service just on mobile multimedia communication device 30, carried out or application program or demand (as by in (for example) multimedia processor 32 one or more the term of execution indication) select one or more in the available channel for utilization.For instance, specific multimedia application may need to have a plurality of broadcasting streams that high bandwidth requires separately.In this case, channel identification device 44 can distribute a plurality of different available channels to be used to launch to adapt to the bandwidth requirement of these a plurality of broadcasting streams.
In some example, channel identification device 44 can be discerned one or more available channels based on the information that receives from multiple source.For instance, if channel identification device 44 use spectral sensors and geographic positioning functionality both, then when definite which channel can be used for utilizing, channel identification device 44 may need to handle from both channel information in these sources.In some cases, when selecting one or more channels, channel identification device 44 may need to manage the collision channels information that can be provided by this multiple source.The Fig. 9 that below is explained in more detail provides in some instances the device of mobile multimedia communication device 30 for example can handle a example from the mode of the channel information of multiple source.
After having discerned one or more available transmission channels by channel identification device 44, digital TV converting unit/reflector 42 can then utilize at once described send channel through identification via network with content of multimedia or data broadcasting or otherwise be transmitted into external device (ED).Mobile multimedia communication device 30 can the initial direct broadcast transmission of external device (ED) therewith.
Fig. 5 may be implemented in the block diagram of the interior digital TV converting unit/reflector 42A of mobile multimedia communication device 30A together with the example of channel identification device 44A for explanation.In Fig. 5, an example of digital TV converting unit/reflector 42 that digital TV converting unit/reflector 42A can be among Fig. 4 to be showed, and an example of the channel identification device 44 that channel identification device 44A can be among Fig. 4 to be showed.In the example of Fig. 5, mobile multimedia communication device 30A can be according to concrete digital broadcast formats ATSC broadcasting multimedia data.Mobile multimedia communication device 30A can promote to the low power transmissions of the ready external device (ED) of ATSC (for example, high definition or panel TV).In such cases, one among the multimedia output device 14A-14N that the ready device of ATSC can comprise among Fig. 2 to be showed.
Such as among Fig. 5 displaying, numeral TV converting unit/reflector 42A can comprise various assemblies, for example, video and/or audio coder 50A, conveying encoder/multiplexer 52A, error correction encoder 54A, ATSC modulator 56A, radio frequency (RF) duplexer/switch 58A and reflector 59A.These assemblies help to be supported in the data transmission on the emission spectrum that utilizes the ATSC standard.The ATSC standard is the multilayer standard that is provided for the layer of video coding, audio coding, transportation flow and modulation.In one example, RF duplexer/switch 58A can comprise hyperfrequency (UHF) duplexer/switch.Duplexer can allow for the sensing purpose received signal and for communication objective and transmit.
Video/audio encoder 50A can comprise that one or more video encoders and one or more audio coders are to become one or more stream with video and/or audio data coding.For instance, video/audio encoder 50A can comprise animation expert group 2 (MPEG-2) encoder or H.264 encoder (from telecommunication standardization sector, ITU-T) with coding video frequency data.Video/audio encoder 50A can comprise that also Doby (Dolby) numeral (Doby AC-3) encoder is with coding audio data.ATSC stream can contain one or more video programs and one or more audio programs.Any video encoder that utilizes can be implemented the master ga(u)ge model or implement high standard at the high definition resolution video at standard definition video.
(for example carry, the MPEG-2 transportation flow, or TS) encoder/multiplexer 52A receives encoded data flow from video/audio encoder 50A, and can make up these data flow to be used for broadcasting, for example, be combined into one or more packetizes basic stream (packetized elementary stream, PES).Can be then with these PES packetizes in the individual programs transportation flow.In some instances, carry encoder/multiplexer 52A the output transportation flow (for example can be provided to error correction encoder 54A, reed-solomon (Reed-Solomon) encoder), but described error correction encoder 54A execution error correction coding is functional.
ATSC modulator 56A can modulate transportation flow to be used for broadcasting.In some cases, ATSC modulator 56A can use the modulation of 8 rank residual sidebands (8VSB) to be used for broadcast transmission.RF duplexer/switch 58A can then carry out duplex to transportation flow, or serves as the switch that is used for transportation flow.Reflector 59A can utilize one or more available channels by channel identification device 44A identification that one or more transportation flows are broadcast to one or more external device (ED)s.
Channel identification device 44A comprises database manager 62, channel selector 64A, optional channel selection user interface (UI) 66A and spectral sensor 70A.Both all are coupled to the memory 60A that can comprise one or more buffers channel identification device 44A and digital TV converting unit/reflector 42A.Channel identification device 44A and digital TV converting unit/reflector 42A be exchange message directly, or also can come exchange message indirectly by storage and the retrieval via the information of memory 60A.
Channel identification device 44A comprises spectral sensor 70A.As discussed previously, for example the spectral sensor of spectral sensor 70A can be used for optional network specific digit TV form (for example, the signal in one or more frequency bands in broadcast spectrum ATSC) by sensing.Spectral sensor 70A can determine channel availability and signal strength signal intensity based on one or more abilities through any broadcast data of the channels of utilization that its identification takies in the frequency spectrum.Spectral sensor 70A can be then will not utilize or the information of available channel is provided to channel selector 64A about current.For instance, on particular channel, do not broadcast any data by any outside isolated system if spectral sensor 70A just detects, then its can to detect this channel be available.
Such as among Fig. 5 displaying, channel selector 64A also can receive information from digital TV frequency band (geographical position) database via network 72 and database manager 62.Numeral TV frequency band database 74 is positioned at mobile multimedia communication device 30A outside, and comprises about the current of (for example, in the ATSC frequency spectrum) in the broadcast spectrum that is used for optional network specific digit TV form and utilizing or the information of available channel.Usually, when with the utilization of channel input or discharge when utilizing, dynamically upgrade digital TV frequency band database 74 for other device.In some instances, digital TV frequency band database 74 can be by geographical position/zone or by frequency band (for example, low VHF, high VHF, UHF) tissue.
In order to make channel identification device 44A obtain channel availability information from digital TV frequency band database 74, in some cases, channel identification device 44A can be provided to geographical location information in the digital TV frequency band database 74 as input.Channel identification device 44A can obtain geographical location information or coordinate from geographic position sensors 73, and geographical location information or coordinate can be indicated the geographical position of mobile multimedia communication device 30A at particular point in time.In some instances, geographic position sensors 73 can comprise the GPS transducer.
After receiving geographical location information from geographic position sensors 73, channel selector 64A can be provided to digital TV frequency band database 74 with this information as input via database manager 62 at once.Database manager 62 can be provided to the interface of digital TV frequency band database 74.In some cases, when retrieving the chosen content of digital TV frequency band database 74, database manager 62 can be stored its local duplicate.In addition, database manager 62 can be stored the selection information (for example, geographical location information) that is provided to digital TV frequency band database 74 by channel selector 64A.
After having sent the geographical location information relevant with mobile multimedia communication device 30A, channel selector 64A can be received in the group that presents one or more available channels of listing in the digital TV frequency band database 74 from digital TV frequency band database 74 at once.Described available channel group can be those available channels in geographic area that is taken at present by mobile multimedia communication device 30A or position (as by geographic position sensors 73 indications).
After any one or both from spectral sensor 70A and digital TV frequency band database 74 received available channel information, channel selector 64A can automatically or via selecting the user of UI 66A to import via channel select one or more available channels at once.Channel selects UI can present available channel in graphical user interface, and the user of service or application program can select one or more in these available channels.
In some instances, channel selector 64A can automatically select or discern one or more in the available channel that is ready to use in the broadcast transmission of being undertaken by mobile multimedia communication device 30A.For instance, channel selector 64A can use by being used for broadcast transmission more than which person or in the definite identification of the one or more information that provide in the multimedia processor 32 (Fig. 4) available channel.In some cases, channel selector 64A can select a plurality of channels based on the requirement or the demand of service of just carrying out or application program.One or more transportation flows that are associated with these services or application program can by reflector 59A through identification channel in one or more on broadcasting.
Fig. 6 may be implemented in the block diagram of the interior digital TV converting unit/reflector 42B of mobile multimedia communication device 30B together with another example of channel identification device 44B for explanation.In Fig. 6, an example of digital TV converting unit/reflector 42 that digital TV converting unit/reflector 42B can be among Fig. 4 to be showed, and an example of the channel identification device 44 that channel identification device 44B can be among Fig. 4 to be showed.Numeral TV converting unit/reflector 42B and channel identification device 44B can be respectively since storage arrangement 60B storage and retrieving informations.Be similar to digital TV converting unit/reflector 42A, digital TV converting unit/reflector 42B comprises that one or more video/audio encoder 50B, carries encoder/multiplexer 52B, an error correction encoder 54B, an ATSC modulator 56B, RF duplexer/switch 58B and reflector 59B.
The difference of the channel identification device 44A of the channel identification device 44B of Fig. 6 and Fig. 5 is that channel identification device 44B does not comprise that Jie receives the database manager of digital TV frequency band database.In Fig. 6, channel identification device 44B only comprises spectral sensor 70B.Because do not implement geographic positioning functionality in the example of Fig. 6, so mobile multimedia communication device 30B does not comprise geographic position sensors.Channel selector 64B discerns one or more available channels to be used for broadcast transmission based on the input that receives from spectral sensor 70B.Channel selector 64B also can select UI 66B to receive the user to the selection from a channel of the tabulation of available channel via channel.Can select to present on the UI 66B tabulation of available channel based on the institute's sensed signal information that provides by spectral sensor 70B at channel.
Fig. 7 is the block diagram of an example of a plurality of multimedia communication devices of explanation, one of them multimedia communication device serves as the main device 82 that is coupled to digital TV frequency band (geographical position) database 80, and wherein remain multimedia communication device and serve as client terminal device (for example, client terminal device 88 and 94).In some cases, but main device 82, client terminal device 88 and client terminal device 94 each self-contained multimedia communication device are (for example, multimedia communication device 4 (Fig. 2)), described multimedia communication device can arrive the remote multi-media output device with multimedia data broadcast in one or more broadcasting streams.Yet, such as hereinafter explanation, main device 82 may command client terminal devices 88 and 94 are carried out the ability of these broadcast transmission.
In the example of Fig. 7, but the down operation of client terminal device 88 and client terminal device 94 each comfortable client mode, and wherein client terminal device 88 and 94 emission can be under the controls of main device 82 together with the frequency channels of operation.Usually, client terminal device 88 and 94 not initial network with the emission of going on the air, up to its receive from main device 82 enable or control signal till.
Main device 82 can be operated under holotype, and wherein main device 82 has the ability of launching under the situation of enabling signal not receiving.Main device 82 can self be selected a channel, and sends to client terminal device 88 and 94 and initial network by enabling signal or control signal.
Such as among Fig. 7 displaying, main device 82 is coupled to digital TV frequency band (geographical position) database 80.Main device 82 may be able to utilize its digital TV channel identification device 86 identifications to be used for one or more available channels of the broadcast transmission of multi-medium data.Numeral TV converting unit/reflector 84 multi-medium data can be converted to digital broadcast formats (for example, encoded multimedia data, modulate this data) and in one or more data flow with described data transmission to one or more multimedia output devices.Main device 82 can comprise geographic position sensors, and digital TV channel identification device 86 can be based on the channel information identification available channel that is provided by digital TV frequency band database 80.In some instances, when the identification available channel, digital TV channel identification device 86 also can use the signal message from spectral sensor.(in an alternate example, when utilizing a plurality of main device, a main device can be carried out geographic positioning functionality, and another main device is carried out spectrum-sensing function.)
Client terminal device 88 comprises digital TV converting unit/reflector 90 and digital TV channel identification device 92.Equally, client terminal device 94 comprises digital TV converting unit/reflector 96 and digital TV channel identification device 98.In the example of Fig. 7, client terminal device 88 and 94 is not coupled to digital TV frequency band database 80, and can not comprise geographic position sensors.Client terminal device 88 and 94 can comprise the spectral sensor that is used for sensing available broadcast channel.Yet before initial any broadcast transmission to one or more multimedia output devices, client terminal device 88 and 94 may at first need to obtain to enable or control signal from main device 82.
In addition, in some cases, main device 82 can provide client terminal device 88 and the 94 available tabulations of being determined by digital TV channel identification device 86 through the available channel of identification to client terminal device 88 and 94.Client terminal device 88 and 94 can be configured to utilize the channel by main device 82 identifications when initial broadcast transmission.In these cases, main device 82 and client terminal device 88 and 94 can be arranged in close relatively or similar geographic location area.
If client terminal device 88 and/or 94 comprises its oneself spectrum-sensing function, then when identification is used for the available channel of broadcast multimedia emission, the channel information that is provided by main device 82 can be provided these devices, may be together with the signal message that is provided by its oneself spectral sensor.In some instances, main device 82 can be carried out negotiation so that determine to select which available channel from client terminal device 88 and/or 94 broadcast datas the time with client terminal device 88 and/or 94.
For instance, client terminal device 88 and/or 94 can be carried out service or the application program with some bandwidth requirement or demand, and can consult to determine which available channel may be suitable for utilizing most at these services or application program and from client terminal device 88 and/or 94 broadcast datas the time with main device 82.
Fig. 8 is the flow chart of an example of explanation one method, described method can be by communicator (for example, one or more in the communicator of being showed among Fig. 1 to Fig. 4) carry out with broadcasted media data on the channel of identification at frequency spectrum (for example, digital TV broadcasting frequency spectrum).In the following description of Fig. 8, only for illustrative purposes, will suppose that the method for Fig. 8 can be carried out by the mobile multimedia communication device of being showed among Fig. 4 30.
Device 30 can become data transaction digital broadcast formats (100) (for example, utilize converting unit, for example, the converting unit that comprises) in digital TV converting unit/reflector 42 of Fig. 4.Described communicator can comprise the multimedia communication device with multimedia capabilities, and data can comprise at least one the multi-medium data that comprises in voice data, video data, text data, speech data and the graph data.In some instances, digital broadcast formats can be ATSC form, T-DMB (T-DMB) form or DVB (digital video broadcasting) form, but also can use various other number formats.When the convert multimedia data, device 30 (for example can utilize one or more videos and/or audio coder, the video/audio encoder 50B that is showed among the video/audio encoder 50A that is showed among Fig. 5 or Fig. 6) and/or multiplexer, together with one or more modulator/duplexers/switch.The convert multimedia data can comprise that the encoded multimedia data to observe digital broadcast formats, reach the encoded multi-medium data of modulation.
If multi-medium data comprises video or graph data, then installing 30 can be on display (for example, at embedded display 38 (Fig. 4) or install on the display of 30 outsides) display video or graph data.If multi-medium data comprises voice data, then install 30 and voice data can be provided to one or more loud speakers, for example, be provided to embedded loud speaker 40 (Fig. 4) or the device 30 outsides loud speaker.
At least one available channel (104) that device 30 can be discerned frequency spectrum (for example, utilize the channel identification device, for example, the channel identification device 44 of Fig. 4).In some cases, this identification can be initial by device.For instance, device 30 (for example can utilize spectral sensor, the spectral sensor 70A of Fig. 5 or the spectral sensor 70B of Fig. 6) and/or from least one available channel of information Recognition of digital TV frequency band database (for example, the digital TV frequency band database 74 of Fig. 5) access.What in some cases, device 30 can be discerned broadcast spectrum (for example, broadcast television spectrum) does not use at least one available channel in the part.In some cases, described at least one available channel can comprise the television band white space.Only lift the several non-limiting example, digital broadcast formats can comprise ATSC (Advanced Television Systems Committee) form, T-DMB (T-DMB) form, DVB (digital video broadcasting) form or animation expert group transportation flow (MPEG-TS) form.
In some instances, if described at least one available channel becomes occupied (for example, by the CU through permission), then install 30 and can use the identification of channel identification device to be used for the subsequent transmission of data and/or at least one other available channel of broadcasting.In some cases, install 30 exploitable channel identifiers and determine that periodically described at least one available channel is still available or has become occupied in cycle time.In some cases, when carrying out this when determining, device 30 can utilize spectral sensor and/or accessing geographic position database.
In an example, device 30 can comprise that geographic position sensors (for example, the geographic position sensors 73 of Fig. 5) is to determine the geographical coordinate of device 30.Device 30 can then be provided to digital TV frequency band database with geographical coordinate as input.
When device 30 used spectral sensor, device 30 can be assigned one or more mass values that are associated with one or more channels that sensed by described spectral sensor.Mass value can be based on noise level, interference (for example, from extraneous signal or without permission/unauthorized user) or other factors.For instance, device 30 can use spectral sensor to obtain some mass value of the channel of the frequency range define or each the indivedual sensing in the frequency band, for example, and the interference level or the signal to noise ratio that can be associated with described channel.Device 30 can use the metamessage that is provided by these mass values to assess each quality of channel (for example, low quality, mean quality, high-quality).For instance, if the high s/n ratio that the mass value of available channel indicates described channel will have the small amount of interference followed then installs 30 and can determine that described channel can be high-quality channel.On the other hand, if the mass value of described available channel is indicated described channel will have low signal-to-noise ratio or had a large amount of interference, then install 30 and can determine that channel can be low-quality channel.
Device 30 can make one or more mass values relevant with the available channel information that is provided by digital TV frequency band database, so that discern at least one available channel, for example shows in the example of Fig. 9.For instance, under a kind of scene, relevant can be included in the channel information indicating channel that provides by digital TV frequency band database can with and with mass value that channel is associated in one determine that described channel can use when surpassing a certain quality threshold.
After device 30 has been discerned at least one available channel, device 30 can (for example be launched in described at least one available channel through discerning, via the reflector 59A of Fig. 5 or the reflector 59B of Fig. 6) through data converted (for example, being transmitted into one or more independent external device (ED)s) (106).For instance, after the request of device 30, device 30 at once can initial broadcast transmission to one or more external multimedia output devices (for example, television equipment).In one example, device 30 can comprise main device (for example, the main device 82 of Fig. 7).In this example, device 30 can send to one or more independent client terminal devices (for example, the client terminal device 88 and/or 94 of Fig. 7) with the information of at least one available channel of identification.
Fig. 9 is the flow chart of an example of explanation one method, and described method can be carried out with the identification available channel by multimedia communication device (for example, in the multimedia communication device of being showed among Fig. 1 to Fig. 4 one or more).In some cases, described device can utilize spectral sensor to reach the information Recognition available channel that receives from digital TV frequency band (geographical position) database.In some cases, device can only utilize spectral sensor identification available channel.In the following description of Fig. 9, only for illustrative purposes, will suppose that the method for being showed among Fig. 9 is carried out by the mobile multimedia communication device of being showed among Fig. 4 30.
In some cases, mobile multimedia communication device 30 can be from the geographic position data storehouse (digital TV frequency band (geographical position) database of for example, being showed in the example of Fig. 5 74) receive the channel information (120) of particular channel.Described channel can comprise and be used for digital TV form (for example, the channel in the frequency band of broadcast spectrum ATSC).Mobile multimedia communication device 30 (for example can use geographic position sensors, the geographic position sensors 73 of Fig. 5) will install 30 geographical location information and be provided to the geographic position data storehouse, and make the geographic position data storehouse channel information of channel be provided and get back to device 30 based on the position of device 30 as input.Yet, (for example, in the example of Fig. 6, show) in certain embodiments, when not utilizing or during the accessing geographic position database, device 30 can not receive any channel information from the geographic position data storehouse.
Device 30 can further receive the signal message (122) of same channel from spectral sensor (the spectral sensor 70A that for example, is showed) from Fig. 5.In this example, device 30 is from the geographic position data storehouse and the channel information of both receive channels of spectral sensor.
Under device 30 and those situations of communicating by letter in the geographic position data storehouse, install 30 and can at first determine whether indicate described channel unavailable (126) by the channel information that described geographic position data storehouse provides.For instance, the geographic position data storehouse can indicate described channel current just by another authorized service provider or user's utilization.In such cases, device 30 can determine to search and utilize another channel (124) that can be used for broadcast transmission, and no matter described spectral sensor indicate described channel can with or unavailable.
Yet,, install 30 and can determine then whether the channel information that is provided by spectral sensor indicates the described channel may be occupied or have a low-quality level (128) if the geographic position data storehouse indicates described channel to use.In some cases, may not improve up-to-date geographic position data storehouse, under described situation, even the geographic position data storehouse has indication in addition, channel still may be occupied.If spectral sensor indicates described channel possibility occupied, then install 30 and can determine to ignore described channel and search available another channel (124).
If spectral sensor identification available channel, but determine mass value indication or determine that according to metamessage described channel can be available but (for example will have low-quality level based on one or more, high noise level, a large amount of interference), then install 30 and can determine to ignore described channel and search another available channel (124) to be used for broadcast transmission.Mass value can be based on noise level, interference (for example, from extraneous signal or without permission/unauthorized user) or other factors.Mass value can be measured based on one or more, for example, and signal to noise ratio, signal-to-interference ratio, the noise-floor that measures or other tolerance.(under device 30 and those situations of communicating by letter in the geographic position data storehouse, when searching another available channel, installing 30 can be once more from geographic position data storehouse receiving channel information.In other cases, device 30 can be only from the spectral sensor receiving channel information to search another available channel.)
Yet,, install 30 and can then select described channel to be used for the broadcast transmission (130) of multi-medium data if spectral sensor is indicated described channel to can be available and also had mediumly to high-quality level (by the mass value indication).In some cases, determine channels when device 30 and (for example only can have intermediate level of quality, based on the mass value of handling) time, device 30 can select described channel to be used for utilizing, but because medium (but not high) credit rating of described channel, can increase the transmitting power of the broadcast communication that is used to utilize described channel.
In some instances, the information about the availability of one or more channels that is provided by the geographic position data storehouse can only be provided device 30.In these examples, comprise spectral sensor even install 30, still can stop using described spectral sensor or the channel information that provides by described transducer is provided of device 30, and only based on the Information Selection available channel that provides by the geographic position data storehouse.
In some instances, one or more services or application program the term of execution, the method that communicator (for example, device 30) is repeatedly showed in the execution graph 9 can be used for a plurality of available channels of the broadcasting of multi-medium data with identification.For instance, application-specific can have high bandwidth requirement, but can utilize a plurality of send channels.But the method that device is showed in 30 execution graphs 9 once or once above can be with identification by described application program utilization with a plurality of available transmission channels of multimedia data broadcast to external device (ED) (for example, TV).
Technology described in the present invention may be implemented in one or more in general purpose microprocessor, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA), programmable logic device (PLD) or other the equivalent logic device.Therefore, as the term " processor " that utilized herein or " controller " can refer in the aforementioned structure any one or more than one, or be suitable for implementing any other structure of technology described herein.
Illustrated herein various assemblies can be realized by any appropriate combination or its any combination of hardware, software, firmware.In described figure, various assemblies are depicted as independent unit or module.Yet, all in the various assemblies of describing referring to these figure or some assemblies can be integrated in usual hardware, firmware and/or the software in assembled unit or module.Therefore, in order to be easy to explanation, be that assembly, unit or module are intended to emphasize specific functional features with character representation, and may not realize these features by independent hardware, firmware or component software.In some cases, various unit can be embodied as can be by the process able to programme of one or more processors execution.
But any feature that is described as module, device or assembly herein can be implemented together in the integrated logic device or be embodied as discrete individually but the logic device of co-operate.In aspect various, these assemblies can form one or more integrated circuit (IC) apparatus at least in part, and described one or more integrated circuit (IC) apparatus can be called integrated circuit (IC) apparatus jointly, for example, and integrated circuit (IC) chip or chipset.But this circuit can be provided in the single IC for both chip apparatus or the integrated circuit (IC) chip device of a plurality of co-operate in, and can be used for multiple image, demonstration, audio frequency or other multiple multicast application program and the device in any one in.In certain aspects, for example, these assemblies can form for example part of the mobile device of wireless communication device handsets (for example, mobile phone hand-held set).
If implement with software, then described technology can be realized by the computer-readable data storage medium that comprises the code with instruction at least in part, when being carried out by one or more processors, one or more in the said method are carried out in described instruction.Computer-readable storage medium can form the part of computer program, and computer program can comprise encapsulating material.Computer-readable media can comprise for example random-access memory (ram), read-only memory (ROM), nonvolatile RAM (NVRAM), Electrically Erasable Read Only Memory (EEPROM), embedded type dynamic random access memory (eDRAM), static RAM (SRAM), flash memory, magnetic or the optical data storage media of Synchronous Dynamic Random Access Memory (SDRAM).Employed any software can be carried out by one or more processors (for example, one or more DSP, general purpose microprocessor, ASIC, FPGA or the integrated or discrete logic of other equivalence).
Various aspects have been described in the present invention.These and other aspect is in the category of appended claims.

Claims (55)

1. method that is used to launch data, it comprises:
Data transaction is become digital broadcast formats;
At least one available channel of identification frequency spectrum; And
Described in described at least one emission in the available channel of identification through data converted.
2. method according to claim 1, that discerns wherein that described at least one available channel comprises the identification broadcast television spectrum does not use described at least one available channel in the part.
3. method according to claim 1 is wherein discerned described at least one available channel and is comprised identification television band white space.
4. method according to claim 1, wherein said digital broadcast formats comprise ATSC (Advanced Television Systems Committee) form, T-DMB (T-DMB) form, DVB (digital video broadcasting) form, integrated service digits broadcasting (ISDB-T) form in ground or animation expert group transportation flow (MPEG-TS) form.
5. method according to claim 1 is wherein by described at least one available channel of the initial identification of communicator.
6. method according to claim 5, wherein:
Described communicator comprises the multimedia communication device with multimedia capabilities; And
Described data comprise at least one the multi-medium data that comprises in voice data, video data, text data, speech data and the graph data.
7. method according to claim 6, wherein:
Change described multi-medium data and comprise the described multi-medium data of coding, reach the described encoded multi-medium data of modulation to observe described digital broadcast formats; And
Launch described being included in described at least one available channel and be transmitted into one or more external device (ED)s through data converted from described multimedia communication device described through discerning through data converted.
8. method according to claim 6, wherein when described multi-medium data comprises video or graph data, described method further is included on the display of described multimedia communication device and shows described video or graph data.
9. method according to claim 6, wherein when described multi-medium data comprises voice data, described method further comprises described voice data is provided to one or more loud speakers.
10. method according to claim 1 is wherein discerned described at least one available channel and is comprised and utilize described at least one available channel of spectral sensor identification.
11. method according to claim 10 is wherein discerned described at least one available channel and is further comprised access Digital Television (TV) frequency band database to discern described at least one available channel.
12. method according to claim 11, it further comprises the geographical coordinate of determining communicator, and wherein the described digital TV frequency band database of access comprises described geographical coordinate is provided to described digital TV frequency band database as input.
13. method according to claim 12, it further comprises assigns one or more mass values that are associated with one or more channels that sensed by described spectral sensor.
14. method according to claim 13, wherein discern described at least one available channel and comprise and make described one or more mass values relevant, so that discern described at least one available channel with the available channel information that provides by described digital TV frequency band database.
15. method according to claim 14, wherein associated packet be contained in the described channel information indicating channel that provides by described digital TV frequency band database can with and with described mass value that described channel is associated in one determine that described channel can use when surpassing quality threshold.
16. method according to claim 1, it further is included in described at least one available channel and becomes by at least one other available channel of identification under the situation of another CU.
17. method according to claim 16, it further comprises determines that periodically described at least one available channel is still available or has become by another CU.
18. a computer-readable storage medium, it comprises and is used to make one or more processors to carry out the instruction of following operation:
Data transaction is become digital broadcast formats;
At least one available channel of identification frequency spectrum; And
Described in described at least one emission in the available channel of identification through data converted.
19. computer-readable storage medium according to claim 18 wherein saidly comprises the instruction of not using described at least one available channel in the part in order to the identification broadcast television spectrum in order to the instruction of discerning described at least one available channel.
20. computer-readable storage medium according to claim 18 wherein saidly comprises instruction in order to identification television band white space in order to the instruction of discerning described at least one available channel.
21. computer-readable storage medium according to claim 18, the described identification of wherein said at least one available channel is initial by communicator.
22. computer-readable storage medium according to claim 18 wherein saidly comprises in order to utilize the instruction of described at least one available channel of spectral sensor identification in order to the instruction of discerning described at least one available channel.
23. computer-readable storage medium according to claim 2 wherein saidly further comprises in order to access Digital Television (TV) frequency band database to discern the instruction of described at least one available channel in order to the instruction of discerning described at least one available channel.
24. computer-readable storage medium according to claim 23, it further comprises the instruction in order to the geographical coordinate of determining communicator, and wherein said instruction in order to the described digital TV frequency band database of access comprises in order to described geographical coordinate is provided to the instruction of described digital TV frequency band database as input.
25. computer-readable storage medium according to claim 18, it further comprises the instruction in order at least one other available channel of identification under becoming by the situation of another CU at described at least one available channel.
26. computer-readable storage medium according to claim 25, it further comprises in order to determine that periodically described at least one available channel is still available or has become by the instruction of another CU.
27. a communicator, it comprises:
Converting unit, it is configured to data transaction is become digital broadcast formats;
The channel identification device, it is configured to discern at least one available channel of frequency spectrum; And
Digit emitter, it is configured in described at least one emission in the available channel of identification described through data converted.
28. what communicator according to claim 27, wherein said channel identification device were configured to discern broadcast television spectrum does not use described at least one available channel in the part.
29. communicator according to claim 27, wherein said channel identification device are configured to discern described at least one available channel by identification television band white space.
30. communicator according to claim 27, wherein said digital broadcast formats comprise ATSC (Advanced Television Systems Committee) form, T-DMB (T-DMB) form, DVB (digital video broadcasting) form, integrated service digits broadcasting (ISDB-T) form in ground or animation expert group transportation flow (MPEG-TS) form.
31. communicator according to claim 27, wherein said channel identification device are configured to discern described at least one available channel at once after initial by described communicator.
32. communicator according to claim 27, wherein:
Described communicator comprises the multimedia communication device with multimedia capabilities; And
Described data comprise at least one the multi-medium data that comprises in voice data, video data, text data, speech data and the graph data.
33. communicator according to claim 32, wherein:
Described converting unit comprises the described multi-medium data that is configured to encode observing the digital multimedia encoder of described digital broadcast formats, and described converting unit further comprises the digital multimedia modulator that is configured to modulate described encoded multi-medium data; And
Described digit emitter be configured at least by described at least one in available channel of identification, be transmitted into one or more external device (ED)s through data converted from described multimedia communication device and launch described through data converted with described.
34. communicator according to claim 32, wherein when described multi-medium data comprised video or graph data, described multimedia communication device further comprised in order to show the display unit of described video or graph data.
35. communicator according to claim 32, wherein when described multi-medium data comprised voice data, described multimedia communication device further comprised in order to export one or more loud speakers of described voice data.
36. communicator according to claim 27, it further comprises spectral sensor, and wherein said channel identification device is configured to utilize described at least one available channel of described spectral sensor identification.
37. communicator according to claim 36, wherein said channel identification device are configured to discern described at least one available channel by access Digital Television (TV) frequency band database to discern described at least one available channel at least.
38. according to the described communicator of claim 37, it further comprises geographic position sensors, described geographic position sensors is configured to determine the geographical coordinate of described communicator, and wherein said channel identification device is configured to come the described digital TV frequency band database of access by described geographical coordinate is provided to described digital TV frequency band database as input at least.
39. according to the described communicator of claim 38, wherein said channel identification device further is configured to assign one or more mass values that are associated with one or more channels that sensed by described spectral sensor.
40. according to the described communicator of claim 39, wherein said channel identification device is configured so that described one or more mass values are relevant with the available channel information that is provided by described digital TV frequency band database, so that discern described at least one available channel.
41. according to the described communicator of claim 40, wherein said channel identification device be configured to the described channel information indicating channel that provides by described digital TV frequency band database can with and with described mass value that described channel is associated in one determine that described channel can use when surpassing quality threshold.
42. communicator according to claim 27, wherein said channel identification device further are configured at least one other available channel of identification under described at least one available channel becomes by the situation of another CU.
43. according to the described communicator of claim 42, wherein said channel identification device further is configured to determine that periodically described at least one available channel is still available or has become by another CU.
44. communicator according to claim 27, wherein said communicator comprises main device, and wherein said digit emitter further is configured to the information of described at least one available channel of identification is sent to and the different device of described main device.
45. communicator according to claim 27, wherein said communicator comprises wireless communication device handsets.
46. communicator according to claim 27, wherein said communicator comprises one or more integrated circuit (IC) apparatus.
47. a communicator, it comprises:
Be used for data transaction is become the device of digital broadcast formats;
Be used to discern the device of at least one available channel of frequency spectrum; And
Be used at described at least one described device of available channel emission through data converted through identification.
48. according to the described communicator of claim 47, the wherein said device that is used for discerning described at least one available channel comprises the device that does not use described at least one available channel of part that is used to discern broadcast television spectrum.
49. according to the described communicator of claim 47, the wherein said device that is used to discern described at least one available channel comprises the device that is used to discern the television band white space.
50. according to the described communicator of claim 47, the wherein said device that is used to discern described at least one available channel comprises the device that is used for discerning at once after initial by described communicator described at least one available channel.
51. according to the described communicator of claim 47, the wherein said device that is used to discern described at least one available channel comprises the device that is used to utilize described at least one available channel of spectral sensor identification.
52. according to the described communicator of claim 51, the wherein said device that is used to discern described at least one available channel further comprises and is used for access Digital Television (TV) frequency band database to discern the device of described at least one available channel.
53. according to the described communicator of claim 52, it further comprises the device of the geographical coordinate that is used for definite described multimedia communication device, and the wherein said device that is used for the described digital TV frequency band database of access comprises the device that is used for described geographical coordinate is provided to as input described digital TV frequency band database.
54. according to the described communicator of claim 47, it further comprises the device that is used at least one other available channel of identification under described at least one available channel becomes by the situation of another CU.
55. according to the described communicator of claim 54, it further comprises and is used for determining that periodically described at least one available channel is still available or has become by the device of another CU.
CN2010800060746A 2009-07-02 2010-02-03 Local broadcast of data using available channels of a spectrum Pending CN102301624A (en)

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US12/547,834 US8374134B2 (en) 2009-01-30 2009-08-26 Local broadcast of data using available channels of a spectrum
US12/547,834 2009-08-26
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