CN101047810A - Ground digital TV receiving terminal with mobile retransmission function - Google Patents
Ground digital TV receiving terminal with mobile retransmission function Download PDFInfo
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- CN101047810A CN101047810A CNA2007100728042A CN200710072804A CN101047810A CN 101047810 A CN101047810 A CN 101047810A CN A2007100728042 A CNA2007100728042 A CN A2007100728042A CN 200710072804 A CN200710072804 A CN 200710072804A CN 101047810 A CN101047810 A CN 101047810A
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Abstract
This invention relates to a ground digital TV receiving terminal with a mobile back-transmission function including: a digital TV receiving module, a digital microprocessor system, a mobile communication module and a display system, in which, the microprocessor system is connected with the receiving module and the mobile communication module in two ways and said display system is connected with the signal output end of the digital microprocessor system, which can receive digital TV programs and other data broadcast services by the ground digital TV broadcast network and utilize cell mobile communication network to realize back-transmission channels of users.
Description
Technical field
The present invention relates to the receiving terminal of Digital Television, particularly ground digital TV receiving terminal.
Background technology
At present, the delivering path of Digital Television can be divided into three kinds: digital satellite television, digital cable TV and digital radio (ground) radio and television.Terrestrial DTV (also claiming wireless digital TV-set) has European standard DVB-T, Unite States Standard ATSC-T etc., Chinese Tsing-Hua University have proposed to have the terrestrial DTV transmission plan DMB-T (Terrestrial Digital Multimedia-TelevisionBroadcasting) of independent intellectual property right.The reception of terrestrial DTV is the same with cable digital TV to have following form:
(1) household digital television receiver; (2) digital TV set-top box+family expenses analog digital television receiver; (3) Digital Television receiving card+multimedia computer.Different with cable digital TV is that terrestrial DTV is more emphasized mobile receiving function.Therefore can cause a huge mobile TV receiving equipment market, occur vehicle-mounted mobile digital TV at present, comprise that automobile, train, subway etc. will be the peculiar manors of vehicle-mounted mobile digital TV.The reception of Mobile Digital TV chance will become emerging multimedia consumer products as mobile phone, PDA.
Along with the development of television digitization, we are in the face of three big digitized information transmission networks at present: broadcasting and television network, computer network and telecommunications network.Three kinds of networks respectively have characteristics, respectively have superiority, and need the bigger usefulness of complementary development competence exertion.
Computer network (comprising the broadband) once faced the problem identical with digital tv network, but computer network has but solved existence and profit problem by means of the value-added service of telecommunications network.
Mobile telephone network in China Telecom's net has become the public network that the user is maximum, coverage rate is the widest, have the greatest impact and has set up perfect charge platform at present.Mobile communication provides the mobile phone value-added service outside the speech communication service at present, comprises note, multimedia message service, service on net and other audio communication value-added services.As with the speech content service being the mobile IVR business of core, IVR (Interactive Voice Respose) interactive voice response system.Obtain platform to the cellphone subscriber who the moves information service that collection voice, a note are provided is one, by dialing specific voice access code, can for own or other people obtain voice messaging, short message content service.Mobile IVR business operation is simple and convenient, need not apply for, need not registration, just as making a phone call, dials specific voice access code, listens to needed application content whenever and wherever possible, and can carry out button operation according to prompt tone, participates in the interactive service.The diversity of telecommunications network service further makes mobile phone become personal digital assistant device of new generation after broadcast receiver, television set and computer, is the symbol of city fashion and consumption culture.And the development requirement of mobile phone value-added service, for relevant industry provides new development opportunity.
Reception of Mobile Digital TV machine and mobile phone all have the ability of reception of moving and process information, and the two has many general character design basiss, have remarkable advantages simultaneously separately.The play quality height of reception of Mobile Digital TV machine picture and sound, the television spectrum resource is abundant; Mobile phone operation is simple, and for numerous users is familiar with, the operation of mobile communications network is also very ripe.The demand of obtaining magnanimity information along with people whenever and wherever possible is more and more stronger, and with the two set design, one continues to give full play to the potentiality of mobile communications network surely, and promotes the development of terrestrial DTV.
Now existing mobile phone is seen the notion of TV, but at present relevant mobile phone sees that the scheme of TV is based on independent mobile communication system GPRS or CDMA 1x data channel, TV programme is sent to certain some broadcasting user, the compressed format of data mode of the MPEG4 of high compression rate often like this with IP Streaming Media form.Even arrived the 3G epoch like this, data rate is than the evolution to some extent of 2G network, but also has inherent shortcoming during the transmission of video broadcast program, for example low-quality image, expensive use and construction cost etc.
Ground digital multimedia TV broad cast transmission plan DMB-T (Terrestrial Digital Multimedia-Television Broadcasting) and time-domain synchronization OFDM multi-carrier modulation technology TDS-OFDM (Time Domain Synchronous OrthogonalFrequency Division Multiplex) that Tsing-Hua University proposes and succeeds in developing have more complete independent intellectual property right.The Ministry of Information industry and radio and television general bureau have formally circulated a notice of this scheme to international wire federation (ITU).DMB-T is domestic unique transmission plan with industrialization basis, makes European standard can't be adopted as national standard by China technically.Shenzhen research institute of Tsing-Hua University combines the reception of Mobile Digital TV machine in the process that relies on autonomous television standard research and development portable digital television terminal as the Industry Promotion base of the DMB-T of Tsing-Hua University standard terrestrial DTV with mobile communication mobile phone.
Summary of the invention
The object of the present invention is to provide a kind of existing mobile communication overlay network that utilizes, carry out the ground digital TV receiving terminal that data return as GPRS or CDMA1x data channel.
Purpose of the present invention can realize like this, designs a kind of ground digital TV receiving terminal with mobile retransmission function, comprising: have the digital TV receiver module of terrestrial DTV antenna, the mobile communication module that has antenna for mobile phone and display system; Be provided with the digital microprocessor system, described digital microprocessor system is connected with digital TV receiver module and mobile communication module are two-way respectively, and described display system connects the signal output part of digital microprocessor system.
The present invention can pass through ground digital television broadcast network receiving digital television program and other data broadcasting service, utilizes cellular mobile communication networks to realize user's return path.The present invention has carry-on mobility, and it can realize the TV applications of broadcast type by the authentication and the charging of mobile communication platform realization digital cable customers, also can realize pay TV and video request program.
Description of drawings
Fig. 1 is the structural representation of preferred embodiment of the present invention.
Fig. 2 is the functional-block diagram of digital TV receiver module 1 among Fig. 1;
Fig. 3 is the functional-block diagram of mobile communication module 3 among Fig. 1;
Fig. 4 is the functional-block diagram of digital microprocessor system 2 among Fig. 1;
Fig. 5 is the layer structure schematic diagram of systems soft ware P.
Embodiment
The invention will be further described below in conjunction with embodiment.
As shown in Figure 1, the ground digital TV receiving terminal with mobile retransmission function comprises: have digital TV receiver module 1, the digital microprocessor system 2 of terrestrial DTV antenna 5, the mobile communication module 3 that has antenna for mobile phone and display system 4.
Described digital microprocessor system 2 respectively with digital TV receiver module 1 and 3 two-way connections of mobile communication module, described display system 4 connects the signal output part of digital microprocessor system 2.
Described digital TV receiver module 1 comprises radio-frequency tuner 11 and channel decoder 12; Described radio-frequency tuner 11 receives the TV RF signals that 5 inductions of terrestrial DTV antenna come, to this TV RF signals amplify, tuning processing output intermediate frequency (IF) signal passes to channel decoder 12 and carries out demodulation process, described channel decoder 12 is to described digital microprocessor system 2 output TS code streams.Radio-frequency tuner 11 now existing silicon sheet types, can adopt the TUA6034 tuner IC of company of Infineon.And channel decoder 12 need carry out different demodulation process respectively according to different ground digital standards: as ATSC-T being carried out the demodulation of vestigial sideband modulation (VSB); DVB-T is carried out the demodulation process of coded orthogonal division modulation (COFDM), DMB-T is carried out the demodulation of time-domain synchronization OFDM multi-carrier modulation (TDS-OFDM).The channel decoding circuit of DBM-T serves as main formation with the channel decoding chip LGS-8222-A1 of Tsing-Hua University at present.
Described mobile communication module 3 comprises the radio frequency unit 31 of posting a letter, collection of letters radio frequency unit 32 and base band signal process circuit 33, as shown in Figure 3.Described base band signal process circuit 33 and described digital microprocessor 2 two-way connections of system; The traffic spike that the described radio frequency unit 31 of posting a letter is exported base band signal process circuit 33 is modulated to radiofrequency signal (as 800MHz, 900MHz or 1800MHz), is launched by described antenna 6; Described collection of letters radio frequency unit 32 recovers the amplification of signal low noise, demodulation, signal digitalized that antenna 6 receives digital baseband signal and delivers to base band signal process circuit 33.Base band signal process circuit 33 mainly is made of silicon chipization (the System on chip) baseband chip around a system, according to the technical standard difference that is adopted, as 2 generations of GSM, 2.5 generations and 3 generation techniques and 2 generations of CDMA, 2.5 generations and 3 generations, this baseband chip system has different selections.Many companies can supply complete chipset in a large number, as TI, ADI/TTP, Lucent, VLSI etc.The baseband signal circuit comprises channel volume/decoding, processing capacities such as encrypt/decrypt, channel separation and reference clock circuit, the fast adapter of sign indicating number.
Described digital microprocessor system 2 comprise center processor 24 that systems soft ware P is installed and respectively with the center processor 24 two-way display output interface circuits 21 that are connected, MPEG2 decoding circuit 22, TS stream demultiplexing circuit 23, mobile communication module controller 25, subscriber identification card interface 26 and memory circuit 27, also comprise the input keyboard 28 that is connected with the input port of center processor 24; The signal input and the signal output part of described MPEG2 decoding circuit 22 is connected described TS stream demultiplexing circuit 23 and display output interface circuit 21 respectively, as shown in Figure 4.
Described display output interface circuit 21 comprises the drive circuit of voice output, figure accelerating circuit and video display driver circuit.Relevant figure accelerating circuit is the needs that the ground digital TV receiving terminal that guarantees to the utlity model has mobile retransmission function can be applicable to online game.
Memory circuit 27 comprises the Flash chip of storing system information, and other data storages that move;
Input keyboard 28 has been gathered the complete function of TV operation and mobile phone input;
Subscriber identification card interface 26 is respectively SIM interface (being fit to GSM) and UIM interface (being fit to CDMA) at different standards;
The TS signal bit stream that TS stream demultiplexing circuit 23 receive channel decoders 12 are sent, down collaborative at center processor 24, TS stream demultiplexing circuit 23 is finished the demultiplexing work of Digital Television, sends audio frequency and video PES stream signal to MPEG2 decoding circuit 22;
MPEG2 decoding circuit 22 is in the collaborative MPEG2 decoding of finishing audio frequency and video down of center processor 24, and the video of exporting stereo analogue audio frequency and digital CCIR601 form is to display output interface circuit 21;
Center processor 24 adopts the Omap1611 of TI, is a kind of multiprocessor engine (the also Xscale CPU of Intel, or the DM642 of TI etc.).Center processor 24 is core control and processing sections of whole ground digital TV receiving terminal.Center processor can carry out the processing of relevant mobile communication protocol, according to the relevant paying that obtains from the mobile communication passage and the key of receipt, the condition that collaborative TS stream demultiplexing circuit 23 carries out TV TS stream receives, and control MPEG2 decoding circuit 22 is finished the MPEG2 decoding of audio frequency and video.It can also manage mobile memory, the relevant multimedia file on the playout storage.When center processor 24 adopts the contour performance processor of DM642, can carry out the compressed encoding storage to digital television signal.
Described display system 4 can be the screen display of mobile phone, but for obtaining the high-quality screen of Digital Television, about 3 cun to 10 cun flat-panel monitors (as TFT-LCD) that reach single-definition digital television requirement resolution of general employing, embodiment has adopted 7 cun LCD digital screen A070VW01 of photoelectricity company of Youda (AU).
Fig. 5 is the layer structure schematic diagram of systems soft ware P.Described systems soft ware P has the structural system of layering, comprising: various process/equipment/memory management function that the operating system kernel layer of the bottom, embedded OS provide or the like is all realized on this level; This operating system can be Windos Mobile operating system, also can be built-in Linux or other special-purpose embedded OS such as VxWorks, PSOS, OS2 etc.
Hardware driving layer on bottom, the interface that it is finished external hardware drives.As digital TV hardware driving layer, system hardware Drive Layer and mobile communication hardware interface software layer;
Application layer on the hardware driving layer such as the management of TS transmit flow data, program control, authorization message management, data, services and application protocol software, mobile communications network layer and mobile data link layer, this layer can call the hardware driving layer, realize data management and application protocol;
The superiors be human-machine interface layer, as user control or the like.
The present invention with utilize separately mobile communications network to provide video frequency program to compare at mobile phone to have following advantage:
1, in conjunction with television broadcasting and mobile network, the present invention can be received in by the ground digital television broadcast network Digital television program utilizes cellular mobile communication networks to realize user's return path, realizes paying and video The TV applications of program request;
2, the channel available for free television reception that itself has broadcast type does not have the peak to use effect when broadcasting is used;
3, the problems such as the authentication of digital cable customers and charging also can be accomplished by mobile communications network;
4, can be applicable to the Web TV recreation;
5, the present invention is at mobile video session, and mobile network page browsing, move download aspect also have advantage.
Claims (6)
1, a kind of ground digital TV receiving terminal with mobile retransmission function comprises: have the digital TV receiver module (1) of terrestrial DTV antenna (5), the mobile communication module (3) that has antenna for mobile phone (6) and display system (4); It is characterized in that:
Be provided with digital microprocessor system (2), described digital microprocessor system (2) respectively with digital TV receiver module (1) and two-way connection of mobile communication module (3), described display system (4) connects the signal output part of digital microprocessor system (2).
2, the ground digital TV receiving terminal with mobile retransmission function according to claim 1 is characterized in that: described digital TV receiver module (1) comprises radio-frequency tuner (11) and channel decoder (12);
Described radio-frequency tuner (11) receives the TV RF signals that terrestrial DTV antenna (5) induction comes, to this TV RF signals amplify, tuning processing output intermediate frequency (IF) signal passes to channel decoder (12) and carries out channel demodulation and handle;
Described channel decoder (12) is to the output TS of described digital microprocessor system (2) code stream.
3, the ground digital TV receiving terminal with mobile retransmission function according to claim 1 is characterized in that: described mobile communication module (3) comprises the radio frequency unit of posting a letter (31), collection of letters radio frequency unit (32) and base band signal process circuit (33);
Described base band signal process circuit (33) and two-way connection of described digital microprocessor system (2);
The described radio frequency unit of posting a letter (31) is modulated to radiofrequency signal with the traffic spike of base band signal process circuit (33) output, is launched by antenna 6;
Described collection of letters radio frequency unit (32) recovers the amplification of signal low noise, demodulation, signal digitalized that antenna 6 receives digital baseband signal and delivers to base band signal process circuit (33).
4, ground digital TV receiving terminal with mobile retransmission function according to claim 1, it is characterized in that: described digital microprocessor system (2) comprise center processor (24) that systems soft ware P is installed and respectively with the two-way display output interface circuit (21) that is connected of center processor (24), MPEG2 decoding circuit (22), TS flows demultiplexing circuit (23), mobile communication module controller (25), subscriber identification card interface (26) and memory circuit (27) also comprise the input keyboard (28) that is connected with the input port of center processor (24);
The signal input and the signal output part of described MPEG2 decoding circuit (22) is connected described TS stream demultiplexing circuit (23) and display output interface circuit (21) respectively.
5, the ground digital TV receiving terminal with mobile retransmission function according to claim 4, it is characterized in that: described systems soft ware P has the structural system of layering, comprise: the operating system kernel layer of the bottom, hardware driving layer on bottom is as digital TV hardware driving layer, system hardware Drive Layer and mobile communication hardware interface software layer; Application layer on the hardware driving layer such as the management of TS transmit flow data, the human-machine interface layer of program control, authorization message management, data, services and application protocol software, mobile communications network layer and the mobile data link layer and the superiors is as user's control, picture and text demonstration/screen display.
6, the ground digital TV receiving terminal with mobile retransmission function according to claim 3 is characterized in that: described baseband signal processing module (33) comprises baseband chip, channel volume/decoding module, encrypting-decrypting module, channel separation module and reference clock module, the fast adaptor module of sign indicating number of silicon chipization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100728042A CN101047810A (en) | 2007-01-04 | 2007-01-04 | Ground digital TV receiving terminal with mobile retransmission function |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100728042A CN101047810A (en) | 2007-01-04 | 2007-01-04 | Ground digital TV receiving terminal with mobile retransmission function |
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| CNA2007100728042A Pending CN101047810A (en) | 2007-01-04 | 2007-01-04 | Ground digital TV receiving terminal with mobile retransmission function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101448200B (en) * | 2007-11-27 | 2010-08-18 | 中兴通讯股份有限公司 | Movable termination for supporting moving interactive multimedia scene |
| CN101242462B (en) * | 2008-02-26 | 2012-10-10 | 东莞市日新传导科技股份有限公司 | Telecom service integrated access system |
| CN103297741A (en) * | 2012-02-28 | 2013-09-11 | 中兴通讯股份有限公司 | Television equipment and call realizing method |
| CN103736273A (en) * | 2013-12-31 | 2014-04-23 | 成都有尔科技有限公司 | Light-emitting diode (LED) screen based interactive game system |
| WO2015161764A1 (en) * | 2014-04-22 | 2015-10-29 | 深圳市天易联科技有限公司 | Online game payment method and system |
-
2007
- 2007-01-04 CN CNA2007100728042A patent/CN101047810A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101448200B (en) * | 2007-11-27 | 2010-08-18 | 中兴通讯股份有限公司 | Movable termination for supporting moving interactive multimedia scene |
| CN101242462B (en) * | 2008-02-26 | 2012-10-10 | 东莞市日新传导科技股份有限公司 | Telecom service integrated access system |
| CN103297741A (en) * | 2012-02-28 | 2013-09-11 | 中兴通讯股份有限公司 | Television equipment and call realizing method |
| CN103736273A (en) * | 2013-12-31 | 2014-04-23 | 成都有尔科技有限公司 | Light-emitting diode (LED) screen based interactive game system |
| WO2015161764A1 (en) * | 2014-04-22 | 2015-10-29 | 深圳市天易联科技有限公司 | Online game payment method and system |
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Open date: 20071003 |