CN101222610B - Front end-controllable intelligent digital television system - Google Patents
Front end-controllable intelligent digital television system Download PDFInfo
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- CN101222610B CN101222610B CN2008100452770A CN200810045277A CN101222610B CN 101222610 B CN101222610 B CN 101222610B CN 2008100452770 A CN2008100452770 A CN 2008100452770A CN 200810045277 A CN200810045277 A CN 200810045277A CN 101222610 B CN101222610 B CN 101222610B
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Abstract
The invention relates to a front-end controllable intelligent digital television system, consisting of a front-end transmission system and a terminal receiving system, wherein, the front-end transmission system is configured with a server to run program parameter ,matching tool' software to uniformly code all program parameters and program private information, thereby forming an NIT table which contains private information and is reused to a program frequency point for transmitting; the terminal receiving system has the frequency point transmitted by the NIT table prefabricated as a central frequency point for start-up searching, decrypts and transmits a correct program parameter list and a correct program private information list from the NIT table with a matching decryption system. When a user selects and watches a program, corresponding program private information which is decrypted from the receiving system in the NIT table from a program TS stream is compared with the private information in the terminal system, if the private information accords with the private information in the terminal system, the program can be watched. The invention guarantees security of the user for receiving information, and can be applied to a satellite digital television system, a terrestrial digital television system and a cable digital television system.
Description
Technical field:
The present invention relates to the improvement of digital TV front-end system and digital TV terminal receiving system, comprise novel digital TV front-end management tool, the hardware reorganization of receiving terminal and the cooperation of software Innovation Systemization.
Background technology:
In recent years, Digital Television development growth gradually, more and more widely be applied to huge numbers of families, meanwhile, the problem that the digital television program management aspect exists also exposes gradually, digital TV set-top box terminal operation interface complexity, all kinds of parameters of user's hack set-top box cause rating problem etc., all management is made troubles to digital television system.Simultaneously, aspect satellite receiver, relevant departments lack unified management to the satellite programming that the user receives, the satellite television programming that causes a lot of users to search program overseas privately or do not land with approval of authority, though at existing technological layer, can increase program, function such as search limits, its fail safe is not high, and behind the change main program, all be easy to crack.Therefore, release a kind of information security management and programme information control system that is used for satellite digital TV, terrestrial DTV, cable digital TV system, seem particularly important.
Summary of the invention:
In order to solve satellite digital TV, terrestrial DTV, cable digital TV system, promote the development of China's Digital Television in the defective aspect information security management and the programme information control.The present invention proposes a kind of new system implementation plan, the pattern of breaking the normal procedure is done corresponding change to front end and terminal, makes program that vast digital cable customers can watch all by the broadcasting and TV unified management.Stop bad program and come into the masses.Realize the control of programme information safety management and programme information.
For realizing above-mentioned functions, the technical solution used in the present invention is:
Configuration one station server operation program parameter " kit " software in the digital TV front-end emission system, all program parameter and every programs private information are carried out Unified coding, constitute the NIT table of a program parameter and private information, the NIT table after mandate is encrypted is multiplexed into a program frequency point and transmits.
In the terminal receiving system, the frequency that transmission NIT is shown is made as the center frequency point that start is searched in advance, uses the decryption system supporting with front end, solves correct program parameter tabulation from the NIT table, and this program parameter is tabulated is stored in the fixed position of receiving terminal; At first decipher the NIT information table after the each start of system, the time very fast (about 3 seconds), synchronous with start-up picture basically, if the NIT table has renewal, receiving system also can be upgraded automatically.
Further: can in the NIT of transmission table, add the program private information, terminal then adopts the IC-card management, IC-card is write by the unified control of national broadcasting and TV encryption authorization in actual applications, user or do not obtain power person and can not write to card, condition of acceptance information such as the center frequency point of storage system, region-position code information, grading control information, control information at times in the IC-card, and private informations such as this region-position code and grading control are corresponding with front end.During program frequency point that the user selects to want from program parameter tabulation to watch, the NIT tabulation of receiving system from program TS stream goes out corresponding program private information, and with the program private information contrast of leaving in the IC-card, if inconsistent, then be considered as illegal programs information.The user can only just can watch digital television program with the card that broadcasting and TV are made like this, and can only watch the program that corresponding authority is arranged on the card.At zones of different, writing corresponding region-position code information is practicable partition management simultaneously; Add the rank control information, just can realize the rank control and management.Because the free program of every cover all has private information, so program parameter has ' uniqueness ', just equals to have controlled the viewership of user terminal at the private information of digital TV front-end control program.
The invention has the beneficial effects as follows: radio and television departments can receive terminal and carry out effectively management, the user can only watch the program on the NIT information summary table, for ground digital TV transmission system, the user does not carry out any operation, just can watch all TV programme, for digital satellite television system, can effectively prevent the satellite television programming that the terminal use searches program overseas privately or do not land with approval of authority.
Description of drawings:
Fig. 1 is a systematic schematic diagram of the present invention.
Embodiment:
Below in conjunction with accompanying drawing, system flow of the present invention done specifying.
Accompanying drawing 1 shows native system framework FB(flow block), and native system partly is made up of program source 1, multiplexer 2, scrambling machine 3, modulator 4 transmission networks 5, broadcast card 6, signal reception 7, software kit 8, server 9, intelligent machine top box 10, TV 11 etc.
At first, the server 9 operation front end software kits 8 of system, by front end software kit 8 all program parameter and private information are made the NIT information table, by broadcast card 6 the NIT information table is sent into multiplexer 2 and flow multiplexing transmission with the program TS that system transmits, program TS stream is by scrambling machine 3, advance ovennodulation device 4 again, enter system transmissions network 5, the transmission network here refers to satellite digital TV transmission system, terrestrial wireless digital television transmission system and cable digital TV system.
In terminal, by different signal receiving modules 7 received signals, signal receives the transmission means that adopts according to front end and is divided into satellite earth antenna, microwave antenna, wire signal reception etc., the signal that receives enters intelligent machine top box 10, receiving terminal is automatically in prefabricated center frequency point search, and according to the supporting decryption system of front end, from the NIT table, solve correct program parameter tabulation and the tabulation of program private information, the NIT information table that solves is stored in the fixed position of terminal, and receiving terminal is searched for the TV programme that front end transmits fast according to the program parameter in the NIT table.The private information decryption system that described terminal receiving system comprises and system's main program are solidificated in the terminal receiving system and the user can not change.Can prevent effectively that the user from receiving illegal programs.
Claims (3)
1. the controlled intelligent digital television system of front end is made up of front end emission system and terminal receiving system, it is characterized in that:
A, front end emission system configuration one station server operation program parameter " kit " software, all program parameter and every programs private information are carried out Unified coding, constitute the NIT table of a program parameter and private information, the NIT table after mandate is encrypted is multiplexed into a program frequency point and transmits;
The frequency that b, terminal receiving system will be transmitted the NIT table is made as the center frequency point that start is searched in advance, with the decryption system that matches with the front end emission system, from the NIT table, solve correct program parameter and program private information, during program frequency point that the user selects to want from program parameter to watch, the NIT submeter of receiving system from program TS stream solves corresponding program private information, and with the terminal receiving system in the respective program private information contrast, private information is consistent, then can rating; The private information decryption system that described terminal receiving system comprises and system's main program are fixed in the terminal receiving system and the user can not change.
2. the controlled intelligent digital television system of front end according to claim 1 is characterized in that: described terminal receiving system can preset the private information corresponding with front end by IC-card, thus the digital television program of control user energy rating.
3. the controlled intelligent digital television system of front end according to claim 1 is characterized in that: the controlled intelligent digital television system of described front end can be applicable to satellite digital TV system, terrestrial digital television system and cable digital TV system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100452770A CN101222610B (en) | 2008-01-28 | 2008-01-28 | Front end-controllable intelligent digital television system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100452770A CN101222610B (en) | 2008-01-28 | 2008-01-28 | Front end-controllable intelligent digital television system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101222610A CN101222610A (en) | 2008-07-16 |
| CN101222610B true CN101222610B (en) | 2010-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2008100452770A Active CN101222610B (en) | 2008-01-28 | 2008-01-28 | Front end-controllable intelligent digital television system |
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| CN (1) | CN101222610B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742059B (en) * | 2008-11-21 | 2013-01-02 | 康佳集团股份有限公司 | Method for managing program receiving parameters of terminal device by using network information table |
| CN102111666B (en) * | 2009-12-25 | 2013-05-08 | 深圳Tcl新技术有限公司 | Method for searching channels and digital television integrated machine using same |
| CN104363464A (en) * | 2014-10-30 | 2015-02-18 | 成都康特电子高新科技有限责任公司 | Simple and practical type video scrambling device |
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| CN101222610A (en) | 2008-07-16 |
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