CN1610378A - Digital television channel control chip - Google Patents
Digital television channel control chip Download PDFInfo
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- CN1610378A CN1610378A CNA2004100645629A CN200410064562A CN1610378A CN 1610378 A CN1610378 A CN 1610378A CN A2004100645629 A CNA2004100645629 A CN A2004100645629A CN 200410064562 A CN200410064562 A CN 200410064562A CN 1610378 A CN1610378 A CN 1610378A
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Abstract
The present invention discloses one kind of digital TV channel control chip, and relates to the safety control chip for satellite digital TV receiver to receive non-authorized program channel in digital TV field. The digital TV channel control chip consists of buffering memory, work mode selector, cipher distinguisher, TV name distinguisher, auxiliary controller, filter, parameter storage and other parts. It judge whether to be authorized receiving program based on the TV station name or TV station mark information to realize the control receiving of satellite TV broadcasting program. The present invention has the features of accurate control, reliable performance, low cost, simple circuit structure, etc. and is especially suitable for safety control of non-authorized program inhibition in satellite digital TV receiver.
Description
Technical field
The present invention relates to a kind of digital television channel control chip in the digital TV field,, be specially adapted to have the satellite digital tv receiver that unauthorized program suppresses and make security control chip as the channel selection chip of satellite television receiver terminal.
Background technology
At present, satellite digital TV is quite universal abroad, domesticly realizes that just progressively satellite digital TV is live.Because the domsat digital TV direct is carried out later, also there is not relevant security control chip product, but expansion along with the satellite digital TV live broadcast service, the channel Security Control Problem of Digital Television is more and more important, presses for a kind of security control chip of development to satisfy the needs of trade management.
Summary of the invention
The objective of the invention is to avoid the weak point in the above-mentioned background technology and provide a kind of and judge whether to authorizing the digital television channel control chip of received television program according to TV programme platform name or station symbol information, and the present invention also has the precise control height, dependable performance, with low cost, circuit structure is simple, volume is little, makes characteristics such as easy to use.
The object of the present invention is achieved like this: it comprises buffer 1, mode of operation selector 2, password identifier 3, TV station's name identifier 4, pilot controller 5, filter 6, parameter storage 7, wherein buffer 1 is gone into end input receiving digital television traffic spike, and buffer 1 goes out that end one tunnel is connected with mode of operation selector 2, another road is connected with filter 6; Mode of operation selector 2 outputs one tunnel serial connection TV station name identifier 4 backs are connected with filter 6, another road serial connection password identifier 3, pilot controller 5 backs are connected with filter 6, parameter storage 7 one tunnel come in and go out end and pilot controller 5 come in and go out hold be connected, another road goes out to hold with TV station name identifier 4 goes into to hold and be connected; Digital television data stream is authorized in filter (6) output;
Digital television data stream signal one tunnel through buffer 1 buffer-stored is delivered to mode of operation selector 2, another road is delivered to filter 6;
The laggard line parameter programming Control of data cached stream signal and the packet information processing and identification of 1 input of mode of operation selector 2 reception buffers, differentiating filter 6 is filterer's operation mode or the information processing identification signal of downloading mode of operation; Filterer's operation mode information processing identification signal is transported to TV station's name identifier 4, download mode of operation information processing identification signal is transported to password identifier 3;
TV station's name identifier 4 receives filterer's operation mode information processing identification signal of mode of operation selectors 2 and carries out TV station's name or the identification of station symbol signal, differentiate output authorize program video, audio frequency, data, and content associated television data information signal transport to filter 6;
Password identifier 3 receives the download mode of operation information processing identification signal of mode of operation selector 2, carries out upgrading of password identification output parameter or assist control working method signal and transports to pilot controller 5;
Parameter upgrading or assist control working method signal that pilot controller 5 receives password identifier 3 carry out information processing, and the change program allows signal or work pick-off signal to transport to filter 6; Supplemental characteristic information stores after the initial parameter traffic flow information of pilot controller 5 or the change is stored and is called in parameter storage 7; Parameter storage 7 provides TV station's name or station symbol data processing with the initial parameter traffic flow information of storage or the supplemental characteristic information of same time input TV station name identifier 4 after the change;
Filter 6 allows according to the change program of the mandate program TV data information signal of the digital television data stream signal of buffer 1 input, 4 inputs of TV station's name identifier, pilot controller 5 inputs or the work pick-off signal carries out data message and filters out and do not allow the television programme data stream that receives, the break-make of control data stream, the digital television data stream signal is authorized in output.
The present invention compares background technology and has following advantage:
1, the present invention judges whether therefore to have unauthorized program precise control height, dependable performance into authorizing the TV programme that receives to realize the Digital Television security control according to TV programme platform name or station symbol information.
2, the present invention adopts conventional integrated circuit, adopts integrated circuit technology to manufacture digital television channel control chip, thus circuit structure is simple, manufacturing process is easy, with low cost, volume is little, easy to use.
3, the present invention not only can be used for homemade digital television devices channel security control, the channel security control that can also use the import digital television devices; Not only be applicable to the equipment that satellite TV signal receives, also can be applicable to data receiver,, therefore have characteristics such as be widely used as satellite data receiving card etc.
Description of drawings
Fig. 1 is the best electric functional-block diagram of the embodiment of the invention.
Among Fig. 1: 1 is that buffer, 2 is that mode of operation selector, 3 is that password identifier, 4 is that TV station's name identifier, 5 is that pilot controller, 6 is that filter, 7 is a parameter storage.
Embodiment
With reference to Fig. 1, the present invention is made up of buffer 1, mode of operation selector 2, password identifier 3, TV station's name identifier 4, pilot controller 5, filter 6, parameter storage 7.
Wherein buffer 1 is gone into end input receiving digital television traffic spike, and buffer 1 goes out that end one tunnel is connected with mode of operation selector 2, another road is connected with filter 6; Mode of operation selector 2 outputs one tunnel serial connection TV station name identifier 4 backs are connected with filter 6, another road serial connection password identifier 3, pilot controller 5 backs are connected with filter 6, parameter storage 7 one tunnel come in and go out end and pilot controller 5 come in and go out hold be connected, another road goes out to hold with TV station name identifier 4 goes into to hold and be connected;
Digital television data stream signal one tunnel through buffer 1 buffer-stored is delivered to mode of operation selector 2, another road is delivered to filter 6.Buffer 1 embodiment adopts general buffer production of integrated circuits.
The laggard line parameter programming Control of data cached stream signal and the packet information processing and identification of 1 input of mode of operation selector 2 reception buffers, differentiating filter 6 is filterer's operation mode or the information processing identification signal of downloading mode of operation; Filterer's operation mode information processing identification signal is transported to TV station's name identifier 4, download mode of operation information processing identification signal is transported to password identifier 3.Mode of operation selector 2 embodiment adopt general programmable integrated circuit to make.
TV station's name identifier 4 receives filterer's operation mode information processing identification signal of mode of operation selectors 2 and carries out TV station's name or the identification of station symbol signal, differentiate output authorize program video, audio frequency, data, and content associated television data information signal transport to filter 6.Name identifier 4 embodiment of TV station adopt general NAND gate circuit to make.
Password identifier 3 receives the download mode of operation information processing identification signal of mode of operation selector 2, carries out upgrading of password identification output parameter or assist control working method signal and transports to pilot controller 5.Password identifier 3 embodiment adopt general coder and decoder ic to make.
Parameter upgrading or assist control working method signal that pilot controller 5 receives password identifier 3 carry out information processing, and the change program allows signal or work pick-off signal to transport to filter 6; Supplemental characteristic information stores after the initial parameter traffic flow information of pilot controller 5 or the change is stored and is called in parameter storage 7; Parameter storage 7 provides TV station's name or station symbol data processing with the initial parameter traffic flow information of storage or the supplemental characteristic information of same time input TV station name identifier 4 after the change.Pilot controller 5 embodiment adopt programmable integrated circuit to make.Parameter storage 7 embodiment adopt general buffer production of integrated circuits.
Filter 6 allows according to the change program of the mandate program TV data information signal of the digital television data stream signal of buffer 1 input, 4 inputs of TV station's name identifier, pilot controller 5 inputs or the work pick-off signal carries out data message and filters out and do not allow the television programme data stream that receives, the break-make of control data stream, the digital television data stream signal is authorized in output.Filter 6 embodiment adopt the general purpose control decoder ic to make.
The concise and to the point operation principle of the present invention is as follows:
It is mainly by analyzing, select the digital television data stream signal, therefrom extract the platform name coding of TV programme, and compare with platform name coding that permission in the TV station name identifier 4 receives, thereby judge whether this program belongs to the TV programme that allows reception, and control with this and to allow the television data stream of the TV programme that allow to receive pass through, filter out and do not allow the TV programme television data stream that receives, reach purpose the signal output control of unauthorized program.
Workflow of the present invention such as Fig. 1, the digital television data stream of reception at first pass through the identification of buffer 1,2 pairs of data package informatins of mode of operation selector, differentiate the mode of operation of filter 6, are operated in filterer's operation mode or download mode of operation.
When being operated in filterer's operation mode, mode of operation selector 2 extracts Program Specific Information in the digital television data stream and business information by demultiplexing information.Can determine current television programme title according to the SDT Service Description Table in the business information stream.TV station's name identifier 4 extracts the Packet Identifier value of the Program Map Table correspondence of all programs by demultiplexing.Find the program map table position of respective program according to the program Packet Identifier, find Packet Identifier value video, audio frequency, data and relevant information that should program by the Program Map Table bag.As belonging to the TV programme that allows reception, 6 of filters allow digital television data stream normally to export, otherwise filter out respective program in the digital television data stream.
When working in downloading mode, password identifier 3 is judged its concrete working method according to password identification, is respectively work such as parameter upgrading, assist control; Parameter upgrade job mode can be changed program and allow list, and password assist control working method is for ending work, not output signal.Before the change and the change data by parameter storage 7 storage, it is standby to carry out data.
It is 30 * 30 millimeters integrated circuit chip structure that embodiment of the invention circuit structure adopts the integrated block length * wide of being made into of semiconductor integrated circuit technique to above each parts circuit, during use the direct plug-in mounting of chip of the present invention is gone in the digital television receiver, the control that reaches digital television broadcasting mandate program receives.
Claims (1)
1, a kind of digital television channel control chip, it comprises buffer (1), it is characterized in that: it also comprises mode of operation selector (2), password identifier (3), TV station's name identifier (4), pilot controller (5), filter (6), parameter storage (7), wherein buffer (1) is gone into end input receiving digital television traffic spike, and buffer (1) goes out that end one tunnel is connected with mode of operation selector (2), another road is connected with filter (6); Mode of operation selector (2) output one tunnel serial connection TV station's name identifier (4) back is connected with filter (6), another road serial connection password identifier (3), pilot controller (5) back are connected with filter (6), parameter storage (7) a tunnel come in and go out end and pilot controller (5) come in and go out hold be connected, another road goes out to hold to go into to hold with TV station's name identifier (4) and is connected;
Digital television data stream signal one tunnel through buffer (1) buffer-stored is delivered to mode of operation selector (2), another road is delivered to filter (6); Digital television data stream is authorized in filter (6) output;
The laggard line parameter programming Control of data cached stream signal and the packet information processing and identification of mode of operation selector (2) reception buffer (1) input, differentiating filter (6) is filterer's operation mode or the information processing identification signal of downloading mode of operation; Filterer's operation mode information processing identification signal is transported to TV station's name identifier (4), download mode of operation information processing identification signal is transported to password identifier (3);
TV station's name identifier (4) receives filterer's operation mode information processing identification signal of mode of operation selector (2) and carries out TV station's name or the identification of station symbol signal, differentiate output authorize program video, audio frequency, data, and content associated television data information signal transport to filter (6);
Password identifier (3) receives the download mode of operation information processing identification signal of mode of operation selector (2), carries out upgrading of password identification output parameter or assist control working method signal and transports to pilot controller (5);
Parameter upgrading or assist control working method signal that pilot controller (5) receives password identifier (3) carry out information processing, and the change program allows signal or work pick-off signal to transport to filter (6); Supplemental characteristic information stores after the initial parameter traffic flow information of pilot controller (5) or the change is stored and is called in parameter storage (7); Parameter storage (7) provides TV station's name or station symbol data processing with the initial parameter traffic flow information of storage or the supplemental characteristic information of same time input TV station's name identifier (4) after the change;
Filter (6) allows according to the change program of the mandate program TV data information signal of the digital television data stream signal of buffer (1) input, TV station's name identifier (4) input, pilot controller (5) input or the work pick-off signal carries out data message and filters out and do not allow the television programme data stream that receives, the break-make of control data stream, the digital television data stream signal is authorized in output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100645629A CN1610378A (en) | 2004-11-25 | 2004-11-25 | Digital television channel control chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100645629A CN1610378A (en) | 2004-11-25 | 2004-11-25 | Digital television channel control chip |
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| Publication Number | Publication Date |
|---|---|
| CN1610378A true CN1610378A (en) | 2005-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100645629A Pending CN1610378A (en) | 2004-11-25 | 2004-11-25 | Digital television channel control chip |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384245C (en) * | 2005-12-27 | 2008-04-23 | 天津三星电子显示器有限公司 | Method for adding Chinese station identification sign of digital TV set |
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2004
- 2004-11-25 CN CNA2004100645629A patent/CN1610378A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384245C (en) * | 2005-12-27 | 2008-04-23 | 天津三星电子显示器有限公司 | Method for adding Chinese station identification sign of digital TV set |
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