CN102325268A - Method for realizing regional control on live broadcasting satellite and national standard T dual-mode set top box - Google Patents
Method for realizing regional control on live broadcasting satellite and national standard T dual-mode set top box Download PDFInfo
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- CN102325268A CN102325268A CN201110262121A CN201110262121A CN102325268A CN 102325268 A CN102325268 A CN 102325268A CN 201110262121 A CN201110262121 A CN 201110262121A CN 201110262121 A CN201110262121 A CN 201110262121A CN 102325268 A CN102325268 A CN 102325268A
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Abstract
The invention discloses a method and system for realizing programme watching regional control on a live broadcasting satellite and national standard T dual-mode set top box by using a national standard ground signal system to limit regional emission and using a hub head end to control propagation characteristics. In accordance with the fact that whether front-end regional control information is received and the content of the received regional control information, a set top box end module performs regional control on programmes received by the set top box. By adopting the technical scheme of the invention, the programmes received by the set top box are controlled according to different regions, a support is provided for guaranteeing legitimate interests of radio and television operators, and what is more, regional control is realized at lower cost.
Description
Technical field
The present invention relates to a kind of method of carrying out Region control in digital television techniques field; Specifically be a kind ofly to utilize that front end is broadcast, multiplex system; Signal transmission system receives and GB T dual-mode set-top box reception technique based on the ABS direct broadcasting satellite, carries out the method for Region control.
Background technology
Direct broadcasting satellite " village village logical " engineering is one of key project of the Eleventh Five-Year Plan period starting of China; Various places party committee, government pay much attention to; Operation maintenance funds support, organization ensure; All actively take measures,, guarantee " the village village is logical " long-term logical getting ready for structure improves permanent mechanism.Live star program is main with central authorities and province's platform all, does not have local program basically.Mostly local program is wired and propagates with terrestrial DTV.
And at present, the terrestrial DTV of China is mainly used in and moves operation and fixing operation. moving operation is main management mode with the bus in-car TV.The area of fixed bottom boundary national standard digital television mainly concentrates on the small and medium-sized cities and the combination area of city and country, especially the area that do not cover of cable TV network.Along with popularizing of digital TV in high resolution, bandwidth resources are more and more nervous.
Can receive ABS GB direct broadcasting satellite signal, can receive the dual-mode set-top box of GB T ground digital television signal again, can well address the above problem.Under above-mentioned technical background, based on dual-mode set-top box, the present invention is as the method for Region control, lets the radio and TV operator can the zoning leading subscriber, and then prevents illegal reception.The Region control of on realizing cost, utilizing the GPRS module to realize in also than third generation seed-sowing machine has superiority.
Summary of the invention
The object of the invention is to provide a kind of direct broadcasting satellite to add GB terrestrial dual-mode set-top box region control method.But utilize GB terrestrial signal restricted area emission, and control the characteristic of propagation with sub-headend, the realization ABS satellite-signal program and the GB T signal program of system are watched the Region control function.
For realizing this method, preparation is following:
1, various places GB T front end system generates Region control information through the Region control front-end software, broadcasts through each regional center frequency, and manufacturer's Region control file is provided
Region control information comprises: Region control sign indicating number and Regional Control Center frequency point parameters
The Region control sign indicating number comprises: Regional Control Center frequency point parameters and Region control sign indicating number.The definition of Region control sign indicating number lays down a regulation by the radio and TV operator is unified, comprises codings compositions at different levels such as province, city (continent), county (district), town, township, village.
The Regional Control Center frequency point parameters comprises: GB T Regional Control Center frequency (as: 490MHz), Region control PID (as: 0x1BC7),, Table ID (as: 0x88) is filled into Region control descriptor (as: descriptor of 0x66)
Front end system installation region, various places control front-end software possesses following function:
Function one: this software is realized generating Region control information according to zone, the various places control code that imports.
Function two: territory control front-end software is broadcast front end with Region control information by the setting of Regional Control Center frequency point parameters.
Function three: Region control information is preserved, and the Region control file that produces a txt form provides STB production to use.
2, integrated region Control Software module in the STB
The device that comprises unique sequence number in this STB, as: unique chip id of CPU or the unique ID of encryption Flash, integrated region Control Software module in the set-top box software, this module possesses following function, and these functions are realized by inside modules:
Functions of modules one: the algorithm (like the MD5 checking algorithm) that comprises the key of the ciphering control message that generates deciphering STB stored in the module; Unique chip id that this algorithm provides according to set-top box hardware produces the close key of a machine one; Re-use the algorithm (like the 3DES deciphering) of encrypting regional control information when producing STB, but the encryption of storing in deciphering machine top box zone control information.
Functions of modules two: Region control information is carried out authentication.STB is delivered to this module with the front end area control information that is resolved to.Module is accomplished function one earlier, obtains the Region control sign indicating number of STB storage inside.Then both are mated, if identical then return success, otherwise would return failure.Realize Region control.
In STB, write regional control information when 3, manufacturer produces
When placing an order, operator, manufacturer is provided with the Region control file.STB is pressed the supply of material of order formula, uses Region control information tool software to import the Region control file of txt form in the manufacturing process.This tool software utilizes the STB serial ports; The unique chip id that returns according to STB; Produce the close key of a machine one through algorithm (like the MD5 checking algorithm), write in the STB Flash fixed address after using AES (encrypting) to encrypt regional control information like 3DES.Realized the encrypting storing of this machine of STB Region control information, because be that a machine one is close, thus not reproducible, improved fail safe.
The radio and TV operator can pass through this scheme, realizes Region control, as: to the STB of A ground granting can only A watch, and can not B watch live star of ABS and local GB T signal program.
Adopt technical scheme of the present invention, possess following effect:
1, the control area receives, and does not allow to receive the ABS signal like user in the city proper, and dual-mode set-top box can carry out Region control through the Region control information in the GB T signal of urban district, limits this STB and can not use in the urban district;
2, can carry out the differentiation prices and charges.The STB that provide different regions can only use in the locality, is convenient to operator and realizes differentiation price and differentiation license fee;
3, cost is compared lower.With respect to realize through the GPRS module Region control third generation seed-sowing machine, realized the Region control function equally, compare and adopted the STB cost of GPRS module lower.
Description of drawings
Fig. 1 is a flow chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further explanation:
Use the embodiment of time domain control
1, the ABS signal is the direct broadcasting satellite emission, does not obviously block as long as have, and can both receive in the domestic scope.GB T signal then can receive topography and geomorphology, transmitter power, transmit direction, even factor affecting such as homogenous frequency signal interference receives.This invention realizes based on the Region control information in the GB T signal, at first needs according to the center frequency point parameter that is stored in Region control information in the STB GB T signal receiving module to be set, and detects whether receive GB T signal.
So at first setting up procedure 101; At first start the center frequency point parameter search GB T signal that GB T signal receiving module provides according to the Region control module behind the set-top-box opening; Detect and whether receive GB T signal, if otherwise carry out step 102, if then carry out step 103;
If 2 steps 101 are not received GB T signal; Step 103 is not resolved to complete Region control information; The failure of step 104 Region control module authentication Region control information then carry out step 102, stops to receive, playing ABS and GB T program, and the prompting zone is incorrect.The control search module program that stops search.
3, owing to inserted the Region control descriptor in the front end area control centre frequency; After step 101 receives GB T signal; Get into step 103, STB utilizes the center frequency point parameter of Region control information, and control PID in setting area (is assumed to be: 0x1BC7), Table ID (is assumed to be: 0x88) be filled into the Region control descriptor and (be assumed to be: the descriptor of 0x66); Data in the descriptor are carried out CRC check, if through then proving the complete Region control information that has been filled into.If, then carry out step 102.If then carry out step 104;
4, owing to carried out factory's distribution, stored a machine one decryption key that adopts algorithm (like the MD5 checking algorithm) to produce through the unique sequence number of chip in the STB, encrypted the Region control information of (as: encrypting) through 3DES.Integrated Region control software module is utilized its function one, can decipher this machine of obtaining Region control sign indicating number.STB only needs to send into the Region control module to the Region control information that obtains in the step 103.Get final product execution in step 104, the Region control sign indicating number in the Region control information that obtains in this machine Region control sign indicating number and 103 that the Region control module will be deciphered matees.If do not match, then carry out step 102.If coupling then carry out step 105.
5, through the affirmation layer by layer of 101,103,104 steps, after this STB satisfied the condition that receives, plays in this zone, STB carry out step 105, normally received, plays ABS and GB T program, realized the normal searching program.
Claims (4)
1. a live star adds the method for GB T dual-mode set-top box Region control, it is characterized in that comprising the steps:
1), at first GB T signal receiving module is set, detects whether receive GB T signal according to the center frequency point parameter that is stored in Region control information in the STB;
So at first setting up procedure 101; At first start the center frequency point parameter search GB T signal that GB T signal receiving module provides according to the Region control module behind the set-top-box opening; Detect and whether receive GB T signal, if otherwise carry out step 102, if then carry out step 103;
2) if step 101 is not received GB T signal; Step 103 is not resolved to complete Region control information; The failure of step 104 Region control module authentication Region control information then carry out step 102, stops to receive, playing ABS and GB T program, and the prompting zone is incorrect; The control search module program that stops search;
3), owing to inserted the Region control descriptor in the front end area control centre frequency; After step 101 receives GB T signal; Get into step 103, STB utilizes the center frequency point parameter of Region control information, and setting area control PID, Table ID are filled into the Region control descriptor; Data in the descriptor are carried out CRC check, if through then proving the complete Region control information that has been filled into; If, then carry out step 102; If then carry out step 104;
4), owing to carried out factory's distribution, stored a machine one decryption key that adopts algorithm to produce through the unique sequence number of chip in the STB, the Region control information of encrypting; Integrated Region control software module is utilized its function one, can decipher this machine of obtaining Region control sign indicating number; STB only needs to send into the Region control module to the Region control information that obtains in the step 103; Get final product execution in step 104, the Region control sign indicating number in the Region control information that obtains in this machine Region control sign indicating number and 103 that the Region control module will be deciphered matees; If do not match, then carry out step 102; If coupling then carry out step 105;
5), the affirmation layer by layer through 101,103,104 steps, after this STB satisfied the condition that receives, plays in this zone, STB carry out step 105, normally received, plays ABS and GB T program, realized the normal searching program.
2. according to the said method of claim 1, it is characterized in that: said Region control information generates and uses through following mode:
Various places GB T front end system generates Region control information through the Region control front-end software, broadcasts through each regional center frequency, and manufacturer's Region control file is provided;
Region control information comprises: Region control sign indicating number and Regional Control Center frequency point parameters;
The Region control sign indicating number comprises: Regional Control Center frequency point parameters and Region control sign indicating number; The definition of Region control sign indicating number lays down a regulation by the radio and TV operator is unified, comprises codings compositions at different levels such as province, city, continent, county, district, town, township, village;
The Regional Control Center frequency point parameters comprises: GB T Regional Control Center frequency, Region control PID, Table ID are filled into the Region control descriptor;
Front end system installation region, various places control front-end software possesses following function:
Function one: this software is realized generating Region control information according to zone, the various places control code that imports;
Function two: territory control front-end software is broadcast front end with Region control information by the setting of Regional Control Center frequency point parameters;
Function three: Region control information is preserved, and the Region control file that produces a txt form provides STB production to use.
3. according to the said method of claim 2; It is characterized in that: integrated region Control Software module in the STB; The device that comprises unique sequence number in this STB, as: unique chip id of CPU or the unique ID of encryption Flash, integrated region Control Software module in the set-top box software; This module possesses following function, and these functions are realized by inside modules:
Functions of modules one: the algorithm that comprises the key of the ciphering control message that generates deciphering STB stored in the module; Unique chip id that this algorithm provides according to set-top box hardware produces the close key of a machine one; Re-use when producing STB and encrypt the algorithm of regional control information, but the encryption of storing in deciphering machine top box zone control information;
Functions of modules two: Region control information is carried out authentication; STB is delivered to this module with the front end area control information that is resolved to; Module is accomplished function one earlier, obtains the Region control sign indicating number of STB storage inside; Then both are mated, if identical then return success, otherwise would return failure; Realize Region control.
4. according to the said method of claim 3, it is characterized in that: manufacturer writes regional control information when producing in STB, with the Region control file, manufacturer is provided when operator places an order; STB is pressed the supply of material of order formula, uses Region control information tool software to import the Region control file of txt form in the manufacturing process; This tool software utilizes the STB serial ports, and the unique chip id that returns according to STB produces the close key of a machine one through algorithm, writes in the STB Flash fixed address after using AES to encrypt regional control information; Realized the encrypting storing of this machine of STB Region control information, because be that a machine one is close, thus not reproducible, improved fail safe.
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| CN102946555A (en) * | 2012-11-28 | 2013-02-27 | 康佳集团股份有限公司 | Method and system for controlling directional reception of data broadcasting business |
| CN103648032A (en) * | 2013-12-16 | 2014-03-19 | 康佳集团股份有限公司 | Method and system for realizing broadcast content control through information configuration for set top box |
| CN104079992A (en) * | 2014-07-11 | 2014-10-01 | 四川金网通电子科技有限公司 | Non-local program shielding method based on wireless set top box |
| CN105721925A (en) * | 2016-01-27 | 2016-06-29 | 天脉聚源（北京）科技有限公司 | Method and device for recommending relevant video |
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| CN104079992B (en) * | 2014-07-11 | 2017-11-14 | 四川金网通电子科技有限公司 | Non-local program screen method based on wireless set-top box |
| CN105721925A (en) * | 2016-01-27 | 2016-06-29 | 天脉聚源（北京）科技有限公司 | Method and device for recommending relevant video |
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| CN102325268B (en) | 2015-07-08 |
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