CN1905669A - Method for safety monitoring of television signal and television signal transmitting terminal and receiving terminal - Google Patents
Method for safety monitoring of television signal and television signal transmitting terminal and receiving terminal Download PDFInfo
- Publication number
- CN1905669A CN1905669A CN 200610109375 CN200610109375A CN1905669A CN 1905669 A CN1905669 A CN 1905669A CN 200610109375 CN200610109375 CN 200610109375 CN 200610109375 A CN200610109375 A CN 200610109375A CN 1905669 A CN1905669 A CN 1905669A
- Authority
- CN
- China
- Prior art keywords
- signal
- signed data
- receives
- signature algorithm
- receiving terminal
- 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.)
- Granted
Links
Images
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a method for safety-monitoring of the television-signals and its transmitter and receiver, which includes: the transmitter determines the signature data for television signals according to the pre-agreed signature-algorithm of the transmitter and receiver, and sends the signature-data together with television signals to the receiver. The receiver judges the signature-data for the received television-signals according to the signature-algorithm, if the signature data is same with the received one, then the television broadcasts the signals, otherwise, it does not. The described transmitter consists of a signal receiving module, a signature data generating module and a signature data inserting module. The described receiver consists of a signal receiving module, a signature-data generating module, a judging module and a broadcast controlling module.
Description
Technical field
The present invention relates to the signal monitoring technology, relate in particular to a kind of TV signal method for safety monitoring and TV signal transmitting terminal and receiving terminal.
Background technology
Classify from the angle of broadcast mode, television broadcasting system mainly is divided into cable tv broadcast system, wireless videocast system and satellite TV broadcast system.Wherein the cable tv broadcast system has mainly covered the user in the city and the suburbs; The wireless videocast system has mainly covered near the user that launching tower is, cable TV can't be installed; Satellite TV broadcast system is the widest television broadcasting system of present coverage rate, has effectively realized the covering of TV programme from far-off regions.
At present the main business form of satellite TV broadcast system has two kinds: for the user of remote districts, because cable TV and radio broadcasting all can't effectively cover, so the direct receiver program receiving via satellite at home of user; For the urban subscriber, at present domestic individual's installation satellite receiver that do not allow, all satellite programmings are unified being forwarded in the cable TV network after the various places Headend receives all, supplies the user to watch.
At present the domestic TV programme of broadcasting via satellite mainly comprises CCTV's 1 to 12 programs, and each provincial TV station makes economizes a programs, as Guangdong Province's 1 cover, Anhui Province's 1 cover etc.Figure 1 shows that the transmission of satellite TV signal and receive principle schematic, as seen from the figure, each TV station sends to local satellite earth station by the transmission network of this locality with TV programme, satellite earth station by the locality sends to satellite television broadcast to program, TV broadcast network is sent to the satellite television receiving equipment of various places via satellite, and the satellite television receiving equipment of various places is inserted into the satellite programming that receives decoding back in the cable TV network of various places and broadcasts by relevant equipment.
Because the coverage and the influence power of satellite TV broadcast system make satellite television service become the target that some illegal organizations attack, simultaneously because the opening of satellite communication link also makes rogue attacks succeed easily.Illegal organization utilizes technological means that the illegal programs signal is inserted in the satellite communication link usually, the satellite TV signal that the various places satellite television receiving equipment is received is the illegal programs signal, and this illegal programs signal can cause serious political fallout after broadcasting by cable TV network.
The method of in the prior art satellite TV signal being carried out security monitoring mainly contains two kinds, is illustrated respectively below.
First kind of method that satellite TV signal is carried out security monitoring is that the satellite television programming that satellite television receiving equipment receives is manually supervised.When the satellite television programming that satellite television receiving equipment is received manually supervises, need to utilize relevant equipment that TV programme is postponed simultaneously, if find then hand off TV programme signal of illegal programs, again the program after postponing is relayed away after no problem determining.This method has been contained the influence of illegal programs to a certain extent, but owing to be manual supervisory mode, all there are certain problem in its reliability and response promptness.
Second kind of method that satellite TV signal is carried out security monitoring is that satellite TV signal is carried out scrambling.It realizes that principle is before satellite TV signal is broadcast TV programs by satellite, and the satellite television transmitting apparatus carries out scrambling to the TV signal of broadcasting TV programs by satellite to be handled, and sends to TV signal after the scrambling and control information in the satellite television broadcast together; The user key that the satellite television receiving equipment utilization is relevant is decrypted the control information that receives, and then TV signal is carried out scramble process, thereby obtains original satellite TV signal.
See also Fig. 2, this figure is available technology adopting scrambling mode is carried out security monitoring to satellite TV signal a schematic diagram, what left-hand component was represented among the figure is that the satellite television transmitting apparatus is to original satellite TV signal scrambling and to generating the process of control information, what right-hand component was represented is that the relevant user key of satellite television receiving equipment utilization is decrypted the control information that receives, and the satellite TV signal that receives is carried out the process of descrambling according to the control information that receives.At first use CW (Control Word, control word) that original satellite TV signal code stream is carried out scrambling, CW is generated at random by scrambler, and period of change generally is 5～30s.Utilize SK (Service Key then, business cipher key) CW is encrypted, generate ECM (Entitle ControlMessage, Entitlement Control Message), utilize PDK (Personal Distribution Key simultaneously, individual's distributing key) SK is encrypted, generate EMM (Entitle Manager Message, Entitlement Management Message) data.Satellite TV signal after ECM, EMM and the scrambling is sent to satellite television receiving equipment together.
Satellite television receiving equipment reads PDK from smart card, deciphering EMM data obtain SK, utilizes SK deciphering ECM data to obtain CW then, with CW code stream is carried out descrambling, just can obtain clear stream, promptly original satellite TV signal.
Because PDK is kept in the smart card, illegal programs can't obtain PDK, therefore can't be decrypted code stream, attacks thereby can't carry out descrambling to TV programme.If directly add flow-disturbing with the clear stream replacement, realize the attack to satellite TV signal successively simultaneously, satellite receiving equipment can detect so, thereby influence can be reduced to minimum.
Above-mentioned employing scrambling mode requires satellite television receiving equipment must dispose deciphering module, descrambling module and smart card to the method that satellite TV signal carries out security monitoring.Use the user of satellite television receiving equipment to mainly contain two classes at present, a class is a satellite broadcaster, and the satellite television receiving equipment of satellite broadcaster receives satellite programming, transmits by cable TV network again.The program that the satellite television receiving equipment of satellite broadcaster receives can be broadcast to very big zone, therefore if adopt this security monitoring mode of satellite TV signal being carried out the scrambling encryption, then require satellite broadcaster must change satellite receiving equipment, thereby increased the equipment cost of satellite broadcaster greatly.It is outlying rural subscribers that an other class is used the user of satellite television receiving equipment, and this class user has used the satellite receiving equipment of no deciphering module at present in a large number.If watch and add flow-disturbing, then equally existing satellite receiving equipment is changed and do not had the satellite television receiving equipment of descrambling decipher function, thereby increased the cost that rural subscribers watch satellite television greatly.And because this class user is the domestic consumer mostly, even received illegal programs, its influence is also very limited, should not require it must change satellite television receiving equipment.
Summary of the invention
The invention provides a kind of TV signal method for safety monitoring and TV signal transmitting terminal and receiving terminal, make satellite television receiving equipment can discern and cut off the illegal TV programme signal that receives automatically.
For achieving the above object, the present invention is by the following technical solutions:
A kind of TV signal method for safety monitoring comprises step:
The signature algorithm that utilization of TV signal transmitting terminal and TV signal receiving terminal are made an appointment is that TV signal to be sent is determined signed data, and this signed data and TV signal to be sent are sent to the TV signal receiving terminal in the lump;
It is that the TV signal that receives is determined signed data that the TV signal receiving terminal utilizes described signature algorithm of making an appointment, if the signed data of determining is identical with the signed data that receives, then play the TV signal that receives, if the signed data of determining is different with the signed data that receives, will not play the TV signal that receives.
If the signed data of determining is different with the signed data that receives, then play the standby TV signal that sets in advance.
Described TV signal transmitting terminal is that TV signal to be sent determines that the process of signed data is:
The TV signal transmitting terminal is decomposed into vision signal, audio signal and service control signal with TV signal to be sent, the signal that need use when therefrom select determining signed data, utilize described selection signal and with signature algorithm and signature algorithm parameter that the TV signal receiving terminal is made an appointment be that TV signal to be sent is determined signed data.
Described TV signal receiving terminal is that the TV signal that receives determines that the process of signed data is:
The TV signal receiving terminal is vision signal, audio signal, service control signal and signed data with the signal decomposition that receives, the signal that need use when from decompose the gained signal, selecting to determine signed data, the signal of utilize selecting, and with signature algorithm and signature algorithm parameter that the TV signal transmitting terminal is made an appointment be that the TV signal that receives is determined signed data.
Described TV signal transmitting terminal is that TV signal to be sent determines that the process of signed data is:
The TV signal transmitting terminal is decomposed into vision signal, audio signal and service control signal with TV signal to be sent, the signal that need use when therefrom select determining signed data utilizes the signal of described selection and the signature algorithm of making an appointment with utilization and TV signal receiving terminal and is that TV signal to be sent is determined signed data from the signature algorithm parameter that Surveillance center receives.
Described TV signal receiving terminal is that the TV signal that receives determines that the process of signed data is:
The TV signal receiving terminal is vision signal, audio signal, service control signal and signed data with the signal decomposition that receives, the signal that need use when from decompose the gained signal, selecting to determine signed data, the signal of utilize selecting, and the signature algorithm of making an appointment with the TV signal transmitting terminal and be that the TV signal that receives is determined signed data from the signature algorithm parameter that Surveillance center receives.
The signature algorithm parameter that described TV signal transmitting terminal and TV signal receiving terminal receive from Surveillance center keeps being dynamically updated by Surveillance center synchronously.
The signal that need use when having specified definite signed data in described signature algorithm or the described signature algorithm parameter.
Described TV signal is a satellite TV signal.
A kind of TV signal transmitting terminal comprises:
The signed data generation module, being used to utilize the signature algorithm of making an appointment with the TV signal receiving terminal is that TV signal to be sent is determined signed data;
The signed data insert module is used for that described definite signed data is inserted described original tv signal and sends to the TV signal receiving terminal in the lump.
Described signed data generation module comprises:
Demultiplexing gives module, is used for TV signal to be sent is decomposed into vision signal, audio signal and service control signal;
Signature is determined submodule, be used for the signal that need use when the gained signal is selected to determine signed data from decomposing, utilize described selection signal and with signature algorithm and signature algorithm parameter that the TV signal receiving terminal is made an appointment be that TV signal to be sent is determined signed data, perhaps
Utilize the signal of described selection and the signature algorithm of making an appointment with the TV signal receiving terminal and be that TV signal to be sent is determined signed data from the signature algorithm parameter that Surveillance center receives.
A kind of TV signal receiving terminal comprises:
Signal receiving module is used for TV signal and signed data that the received television signal transmitting terminal sends;
The signed data generation module, utilizing the signature algorithm of making an appointment with the TV signal transmitting terminal is that the TV signal that receives is determined signed data;
Judge module is used to judge whether the signed data that the signed data generation module determines is identical with the signed data that receives;
Transmit control module, be used for broadcast according to the judged result control satellite TV signal of judge module, if the signed data that the signed data generation module is determined is identical with the signed data that signal receiving module receives, then play the TV signal that receives, otherwise, will not play the TV signal that receives.
Described signed data generation module comprises:
The demultiplexing submodule, the signal decomposition that is used for receiving is vision signal, audio signal, service control signal and signed data;
Signature is determined submodule, be used for the signal that need use when the gained signal is selected to determine signed data from decomposing, utilize the signal of described selection, and with signature algorithm and signature algorithm parameter that the TV signal transmitting terminal is made an appointment be that the TV signal that receives is determined signed data, perhaps
Utilize the signal of described selection, and the signature algorithm of making an appointment with the TV signal transmitting terminal and be that the TV signal that receives is determined signed data from the signature algorithm parameter that Surveillance center receives.
Because the present invention has adopted above technical scheme, so have following beneficial effect:
Technical solution of the present invention is that TV signal to be sent is determined signed data by utilize signature algorithm at the TV signal transmitting terminal, this signed data and TV signal are sent to the TV signal receiving terminal in the lump, the TV signal receiving terminal utilizes described signature algorithm of making an appointment to determine signed data for decomposing the gained TV signal, if this signed data is identical with decomposition gained signed data, then play the TV signal that receives, otherwise, will not play the TV signal that receives.Thereby make the TV signal receiving terminal that adopts method for safety monitoring of the present invention can detect the legitimacy of the TV signal that receives automatically, can in time discern and cut off illegal TV signal, reduced the workload of monitoring, improved the reliability of monitoring simultaneously, and because signed data is the additional data in the TV signal transmission course, therefore to not influence of existing TV signal receiving terminal received television signal in the system.
Description of drawings
Fig. 1 is the transmission of satellite TV signal and receives principle schematic;
Fig. 2 carries out security monitoring for available technology adopting scrambling cipher mode to satellite TV signal schematic diagram;
Fig. 3 is the main realization principle flow chart of satellite TV signal method for safety monitoring of the present invention;
Fig. 4 is the schematic diagram that utilizes the TS bag that the signal that comprises in the TV programme is encapsulated;
Fig. 5 is the schematic diagram that utilizes the TS bag that signed data is encapsulated;
Fig. 6 is the main composition structured flowchart of TV signal transmitting terminal of the present invention;
Fig. 7 is for being the main composition structured flowchart of TV signal receiving terminal of the present invention.
Embodiment
For solving above-mentioned problems of the prior art, technical solution of the present invention is that TV signal to be sent is determined signed data by utilize signature algorithm at the TV signal transmitting terminal, this signed data and TV signal are sent to the TV signal receiving terminal in the lump, the TV signal receiving terminal utilizes described signature algorithm of making an appointment to determine signed data for decomposing the gained TV signal, if this signed data is identical with decomposition gained signed data, then play the TV signal that receives, otherwise, will not play the TV signal that receives, thereby make the TV signal receiving terminal that adopts method for safety monitoring of the present invention can detect the legitimacy of the TV signal that receives automatically, can in time discern and cut off illegal TV signal, and the not influence of TV signal receiving terminal received television signal to not adopting method for safety monitoring of the present invention in the system.
Be explained in detail to the main realization principle of technical solution of the present invention, embodiment and to the beneficial effect that should be able to reach below in conjunction with each accompanying drawing.
See also Fig. 3, this figure is the main realization principle flow chart of satellite TV signal method for safety monitoring of the present invention, and its main implementation procedure is as follows:
The TV programme that step S10, the TV station cable TV network by this locality will need to broadcast via satellite sends to local TV signal transmitting terminal;
Include vision signal, audio signal and relevant service control signal in the TV programme, according to MPEG-2 system layer standard, TV station need utilize the TS bag of 188 bytes that the signal that comprises in the TV programme is unified encapsulation.See also Fig. 4, this figure utilizes the TS of 188 bytes to wrap the schematic diagram that the signal that comprises in the TV programme is encapsulated, and its detailed process is as follows:
1) utilize the MPEG-2 algorithm that the various signals that comprise in the TV programme are compressed processing respectively, the signal after compression is handled is encapsulated as the PES bag;
2) the PES bag is cut apart, be inserted in the TS bag.
The TV programme TS flow point that step S11, TV signal transmitting terminal send the TV station that receives is a two-way, to wherein one the tunnel carrying out demultiplexing and handle, it is decomposed into vision signal TS stream, audio signal TS stream and relevant service control signal TS stream; And to processings that package of the TS stream of each signal of obtaining after decomposing, obtain vision signal PES stream, audio signal PES stream and service control signal PES respectively and flow, simultaneously another road TV programme TS stream is carried out delay buffer.
The PES signal flow that step S12, TV signal transmitting terminal need use when selecting to determine signed data from the vision signal PES stream, audio signal PES stream and the service control signal PES stream that decompose gained, utilize the PES signal flow of described selection, and with signature algorithm and signature algorithm parameter that the TV signal receiving terminal is made an appointment be that TV signal to be sent is determined signed data; Perhaps
Utilize the PES signal flow of described selection, and the signature algorithm of making an appointment with the TV signal receiving terminal and the signature algorithm parameter that receives from Surveillance center are that TV signal to be sent is determined signed data.
The parameter of signature algorithm is dynamically produced by Surveillance center, upgrades synchronously under the control of Surveillance center, sends to TV signal transmitting terminal and TV signal receiving terminal respectively by cipher mode.The signature algorithm parameter update cycle of Surveillance center can be pre-configured, and the update cycle is short more, and the possibility that is cracked is more little, but the real-time of network is required to improve; Update cycle is long more, and is low more to the real-time requirement of network, but the possibility that is cracked increases.
The PES signal flow that need use when determining signed data is by specifying in signature algorithm or the signature algorithm parameter.
Enumerating two concrete examples below is specifically described definite process of signed data:
First example is: signature algorithm extracts the data of a byte for extract the data of a byte from vision signal from audio signal, and the data of two bytes extracting are carried out and computing; The signature algorithm parameter has been specified the position that reaches the byte of extracting from audio signal from vision signal.
Second example is: signature algorithm decomposes the data of extracting a byte the gained signal for from a kind of data of extracting a byte of decomposing the gained signal from another kind, and the data of two bytes extracting are carried out and computing; Signal type that has used when having specified definite signed data in the signature algorithm parameter and the position of extracting byte accordingly.
Step S13, TV signal transmitting terminal utilize the TS bag of 188 bytes that described definite signed data is unified encapsulation according to MPEG-2 system layer standard, form signed data TS stream.Figure 5 shows that the TS that utilizes 188 bytes wraps the schematic diagram that signed data is encapsulated.
Step S14, TV signal transmitting terminal insert described signed data TS stream in another road TV programme TS stream that is in the delay buffer state among the above-mentioned steps S11, form the TV programme code stream after signing, and send it to the TV signal receiving terminal.
Step S15, TV signal receiving terminal are divided into two-way with the TV programme code stream that receives, one tunnel TV programme code stream is wherein carried out demultiplexing to be handled, it is decomposed into vision signal TS stream, audio signal TS stream, service control signal TS stream and signed data TS stream, the signal TS stream that need use when therefrom selecting to determine signed data carries out delay buffer to another road TV programme code stream simultaneously.
The signal TS stream that need use when determining signed data is by specifying in signature algorithm or the signature algorithm parameter.
The TS signal flow that step S16, TV signal receiving terminal will use in the time of will determining signed data is treated to the PES signal flow, and utilizing this PES signal flow and signature algorithm and signature algorithm parameter is that the TV signal that receives is determined signed data.
If the signature algorithm parameter that the TV signal transmitting terminal uses among the above-mentioned steps S12 is the signature algorithm parameter of making an appointment with the TV signal receiving terminal, then in this step, the PES signal flow that the utilization of TV signal receiving terminal obtains after handling and with signature algorithm and signature algorithm parameter that the TV signal transmitting terminal is made an appointment be that the TV signal that receives is determined signed data;
If the signature algorithm parameter of the signature algorithm parameter that the TV signal transmitting terminal uses among the above-mentioned steps S12 for receiving from Surveillance center, then in this step, the signature algorithm parameter that the utilization of TV signal receiving terminal receives from Surveillance center and be solidificated in local signature algorithm F and determine signed data for the PES signal flow that decomposes gained signed data correspondence.
Step S17, TV signal receiving terminal judge whether the signed data of determining among the above-mentioned steps S16 is identical with the corresponding signed data that receives, if it is identical, the TV signal that representative receives is legal signal, execution in step S18, otherwise, the TV signal that representative receives is an illegal signals, execution in step S19.
Step S18, TV signal receiving terminal output to another road TV programme code stream that is in the delay buffer state among the above-mentioned steps S15 in the local cable TV network, are play.
The standby TV signal that step S19, TV signal receiving terminal will set in advance outputs in the local cable TV network and plays, and will not play the satellite television code stream that receives.
As fully visible, when implementing the inventive method principle, the TV signal receiving terminal can detect the legitimacy of the TV signal that receives automatically, thereby can in time discern and cut off illegal TV signal, reduced the workload of monitoring, improved the reliability of monitoring simultaneously, and because signed data is the additional data in the TV signal transmission course, therefore to not influence of existing TV signal receiving terminal received television signal in the system.
Satellite TV signal method for safety monitoring corresponding to the above-mentioned proposition of the present invention, the present invention goes back and then has proposed a kind of TV signal transmitting terminal and TV signal receiving terminal of correspondence here, see also Fig. 6, this figure is the main composition structured flowchart of TV signal transmitting terminal of the present invention, it mainly comprises signal receiving module 10, signed data generation module 20 and signed data insert module 30, wherein signed data generation module 20 specifically comprises demultiplexing submodule 201 and the definite submodule 202 of signature again, and wherein each concrete effect of forming module is as follows:
Signal receiving module 10 is used to receive the original tv signal TS stream that TV station sends;
Signed data generation module 20 utilizes the signature algorithm of making an appointment with the TV signal receiving terminal to determine signed data for the original tv signal that TV station sends; Signed data generation module 20 specifically comprises:
Signature is determined submodule 202, be used for the signal that need use when the gained signal is selected to determine signed data from decomposing, utilize described selection signal and with signature algorithm and signature algorithm parameter that the TV signal receiving terminal is made an appointment be that TV signal to be sent is determined signed data, perhaps
Utilize the signal of described selection and the signature algorithm of making an appointment with the TV signal receiving terminal and be that TV signal to be sent is determined signed data from the signature algorithm parameter that Surveillance center receives.
Signed data insert module 30 is used for that the signed data that described signed data generation module 20 is determined is inserted described original tv signal and sends to the TV signal receiving terminal in the lump.
See also Fig. 7, this figure is the main composition structured flowchart of TV signal receiving terminal of the present invention, it mainly comprises signal receiving module 40, signed data generation module 50, judge module 60 and transmit control module 70, wherein signed data generation module 50 specifically comprises demultiplexing submodule 50 and the definite submodule 502 of signature again, and wherein each main effect of forming module is as follows:
Signal receiving module 40 is used for TV signal and signed data that the received television signal transmitting terminal sends;
Signed data generation module 50, utilizing the signature algorithm of making an appointment with the TV signal transmitting terminal is that the TV signal that receives is determined signed data; Signed data generation module 50 specifically comprises:
Signature is determined submodule 502, be used for the signal that need use when the gained signal is selected to determine signed data from decomposing, utilize the signal of described selection, and with signature algorithm and signature algorithm parameter that the TV signal transmitting terminal is made an appointment be that the TV signal that receives is determined signed data, perhaps
Utilize the signal of described selection, and the signature algorithm of making an appointment with the TV signal transmitting terminal and be that the TV signal that receives is determined signed data from the signature algorithm parameter that Surveillance center receives.
Transmit control module 70, be used for broadcast according to the judged result control satellite TV signal of judge module, if the signed data that signed data generation module 50 is determined is identical with the signed data that signal receiving module 40 receives, then play the TV signal that receives, otherwise, will not play the TV signal that receives.
Wherein the TV signal transmitting terminal of the above-mentioned proposition of the present invention and satellite television receive other short concrete correlation techniques and realize that details please refer to the specific descriptions of the correlation technique realization details in the said method of the present invention, no longer gives too much to give unnecessary details here.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (13)
1, a kind of TV signal method for safety monitoring is characterized in that, comprises step:
The signature algorithm that utilization of TV signal transmitting terminal and TV signal receiving terminal are made an appointment is that TV signal to be sent is determined signed data, and this signed data and TV signal to be sent are sent to the TV signal receiving terminal in the lump;
It is that the TV signal that receives is determined signed data that the TV signal receiving terminal utilizes described signature algorithm of making an appointment, if the signed data of determining is identical with the signed data that receives, then play the TV signal that receives, if the signed data of determining is different with the signed data that receives, will not play the TV signal that receives.
2, the method for claim 1 is characterized in that, if the signed data of determining is different with the signed data that receives, then plays the standby TV signal that sets in advance.
3, the method for claim 1 is characterized in that, described TV signal transmitting terminal is that TV signal to be sent determines that the process of signed data is:
The TV signal transmitting terminal is decomposed into vision signal, audio signal and service control signal with TV signal to be sent, the signal that need use when therefrom select determining signed data, utilize described selection signal and with signature algorithm and signature algorithm parameter that the TV signal receiving terminal is made an appointment be that TV signal to be sent is determined signed data.
4, method as claimed in claim 3 is characterized in that, described TV signal receiving terminal is that the TV signal that receives determines that the process of signed data is:
The TV signal receiving terminal is vision signal, audio signal, service control signal and signed data with the signal decomposition that receives, the signal that need use when from decompose the gained signal, selecting to determine signed data, the signal of utilize selecting, and with signature algorithm and signature algorithm parameter that the TV signal transmitting terminal is made an appointment be that the TV signal that receives is determined signed data.
5, the method for claim 1 is characterized in that, described TV signal transmitting terminal is that TV signal to be sent determines that the process of signed data is:
The TV signal transmitting terminal is decomposed into vision signal, audio signal and service control signal with TV signal to be sent, the signal that need use when therefrom select determining signed data utilizes the signal of described selection and the signature algorithm of making an appointment with utilization and TV signal receiving terminal and is that TV signal to be sent is determined signed data from the signature algorithm parameter that Surveillance center receives.
6, method as claimed in claim 5 is characterized in that, described TV signal receiving terminal is that the TV signal that receives determines that the process of signed data is:
The TV signal receiving terminal is vision signal, audio signal, service control signal and signed data with the signal decomposition that receives, the signal that need use when from decompose the gained signal, selecting to determine signed data, the signal of utilize selecting, and the signature algorithm of making an appointment with the TV signal transmitting terminal and be that the TV signal that receives is determined signed data from the signature algorithm parameter that Surveillance center receives.
As claim 5 or 6 described methods, it is characterized in that 7, the signature algorithm parameter that described TV signal transmitting terminal and TV signal receiving terminal receive from Surveillance center keeps being dynamically updated by Surveillance center synchronously.
8, as any described method in the claim 3 to 6, it is characterized in that the signal that need use when having specified definite signed data in described signature algorithm or the described signature algorithm parameter.
9, as any described method in the claim 1 to 6, it is characterized in that described TV signal is a satellite TV signal.
10, a kind of TV signal transmitting terminal is characterized in that, comprising:
The signed data generation module, being used to utilize the signature algorithm of making an appointment with the TV signal receiving terminal is that TV signal to be sent is determined signed data;
The signed data insert module is used for that described definite signed data is inserted described original tv signal and sends to the TV signal receiving terminal in the lump.
11, TV signal transmitting terminal as claimed in claim 10 is characterized in that, described signed data generation module comprises:
The demultiplexing submodule is used for TV signal to be sent is decomposed into vision signal, audio signal and service control signal;
Signature is determined submodule, be used for the signal that need use when the gained signal is selected to determine signed data from decomposing, utilize described selection signal and with signature algorithm and signature algorithm parameter that the TV signal receiving terminal is made an appointment be that TV signal to be sent is determined signed data, perhaps
Utilize the signal of described selection and the signature algorithm of making an appointment with the TV signal receiving terminal and be that TV signal to be sent is determined signed data from the signature algorithm parameter that Surveillance center receives.
12, a kind of TV signal receiving terminal is characterized in that, comprising:
Signal receiving module is used for TV signal and signed data that the received television signal transmitting terminal sends;
The signed data generation module, utilizing the signature algorithm of making an appointment with the TV signal transmitting terminal is that the TV signal that receives is determined signed data;
Judge module is used to judge whether the signed data that the signed data generation module determines is identical with the signed data that receives;
Transmit control module, be used for broadcast according to the judged result control satellite TV signal of judge module, if the signed data that the signed data generation module is determined is identical with the signed data that signal receiving module receives, then play the TV signal that receives, otherwise, will not play the TV signal that receives.
13, TV signal receiving terminal as claimed in claim 12 is characterized in that, described signed data generation module comprises:
The demultiplexing submodule, the signal decomposition that is used for receiving is vision signal, audio signal, service control signal and signed data;
Signature is determined submodule, be used for the signal that need use when the gained signal is selected to determine signed data from decomposing, utilize the signal of described selection, and with signature algorithm and signature algorithm parameter that the TV signal transmitting terminal is made an appointment be that the TV signal that receives is determined signed data, perhaps
Utilize the signal of described selection, and the signature algorithm of making an appointment with the TV signal transmitting terminal and be that the TV signal that receives is determined signed data from the signature algorithm parameter that Surveillance center receives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101093757A CN100499797C (en) | 2006-08-14 | 2006-08-14 | Method for safety monitoring of television signal and television signal transmitting terminal and receiving terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101093757A CN100499797C (en) | 2006-08-14 | 2006-08-14 | Method for safety monitoring of television signal and television signal transmitting terminal and receiving terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1905669A true CN1905669A (en) | 2007-01-31 |
| CN100499797C CN100499797C (en) | 2009-06-10 |
Family
ID=37674771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101093757A Expired - Fee Related CN100499797C (en) | 2006-08-14 | 2006-08-14 | Method for safety monitoring of television signal and television signal transmitting terminal and receiving terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100499797C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572778B (en) * | 2008-04-28 | 2011-11-30 | 北大方正集团有限公司 | Method and system for broadcasting programs |
| CN107222453A (en) * | 2016-03-22 | 2017-09-29 | 阿里巴巴集团控股有限公司 | A kind of document transmission method and device |
| CN107484001A (en) * | 2017-08-22 | 2017-12-15 | 深圳创维－Rgb电子有限公司 | Signal source channels naming method, TV and computer-readable recording medium |
-
2006
- 2006-08-14 CN CNB2006101093757A patent/CN100499797C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572778B (en) * | 2008-04-28 | 2011-11-30 | 北大方正集团有限公司 | Method and system for broadcasting programs |
| CN107222453A (en) * | 2016-03-22 | 2017-09-29 | 阿里巴巴集团控股有限公司 | A kind of document transmission method and device |
| CN107222453B (en) * | 2016-03-22 | 2020-01-31 | 阿里巴巴集团控股有限公司 | file transmission method and device |
| CN111385101A (en) * | 2016-03-22 | 2020-07-07 | 阿里巴巴集团控股有限公司 | File transmission method and device |
| CN107484001A (en) * | 2017-08-22 | 2017-12-15 | 深圳创维－Rgb电子有限公司 | Signal source channels naming method, TV and computer-readable recording medium |
| CN107484001B (en) * | 2017-08-22 | 2019-09-20 | 深圳创维－Rgb电子有限公司 | Signal source channels naming method, TV and computer readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100499797C (en) | 2009-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1930879A (en) | Smartcard dynamic management | |
| CN1826801A (en) | Processing a data stream format for mobile audiovisual reception | |
| CN101032167A (en) | Method for broadcasting digital data to a targeted set of reception terminals | |
| CN101061666A (en) | Method for managing digital rights in broadcast/multicast service | |
| CN101047830A (en) | Method and device for authorising conditional access | |
| CN1286865A (en) | Packet filtering | |
| CN1885836A (en) | Information filtering and secret-keeping method and apparatus in instantaneous communication | |
| WO2005045554A3 (en) | System and method for using drm to control conditional access to broadband digital content | |
| CN1767632A (en) | In open cable system, business information is carried out pretreated method and apparatus | |
| CN1867066A (en) | Digital television program broadcasting system and method | |
| CN1549595A (en) | Information transmitting method and apparatus for interactive digital broadcast television system | |
| US8306223B2 (en) | Method and a system for transmitting encrypted control message based on mobile multimedia broadcast | |
| CN103596050A (en) | Digital television signal reception system and reception method thereof | |
| CN103581751B (en) | A kind of digital television signal receives system and method for reseptance | |
| CN1905669A (en) | Method for safety monitoring of television signal and television signal transmitting terminal and receiving terminal | |
| CN1140121C (en) | Process for controlling access to domestic network and device implementing the process | |
| CN1720732A (en) | Messaging over mobile phone network for digital multimedia network | |
| CN1294755C (en) | Multimedia terminal | |
| US20050097053A1 (en) | System and associated terminal, method and computer program product for protecting content | |
| CN2870024Y (en) | Digital visible telecontrol system | |
| CN1863330A (en) | Method and system for implementing network television message service | |
| CN101035256A (en) | Method for playing the interference-added TV program at the mobile phone TV terminal | |
| CN1547836A (en) | Local digital network, methods for installing new devices and data broadcast and reception methods in such a network | |
| CN101064838A (en) | Digital satellite broadcast receiver and its information processing method | |
| CN1745585A (en) | Pay television, method for revoking rights in such a system, associated decoder and smart card, and message transmitted to such a decoder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20130814 |