CN101453615B - Device, method and television set for supporting multi-condition receiving module - Google Patents
Device, method and television set for supporting multi-condition receiving module Download PDFInfo
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- CN101453615B CN101453615B CN2007101963622A CN200710196362A CN101453615B CN 101453615 B CN101453615 B CN 101453615B CN 2007101963622 A CN2007101963622 A CN 2007101963622A CN 200710196362 A CN200710196362 A CN 200710196362A CN 101453615 B CN101453615 B CN 101453615B
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Abstract
The invention provides a device and a method for supporting various condition receiving modules, and a television comprising the device. The device comprises a code stream analyzing device for extracting broadcaster information and condition receiving system information in received code stream, a storage device for pre-storing a condition receiving module management list which comprises information correlated to the various condition receiving module, a processing device for retrieving the condition receiving module management list to determine condition receiving module information matched with the broadcaster information and the condition receiving system information extracted by the code stream analyzing device, and a condition module control device for receiving the module information according to conditions, opening corresponding condition receiving modules and closing other condition receiving modules.
Description
Technical field
The present invention relates to a kind of television set that is used for device, the method for digital television reception and comprises this device.Be particularly related to a kind of television set that is used to support device, the method for multiple different condition receiver module and comprises this device.
Technical background
As everyone knows, in the simulated television epoch, the user generally can directly receive and watch the content of analog television broadcast by television set.But, along with entering into the Digital Television epoch,, be only to have that the user of rating power can rating just the content of some television broadcastings is arranged in order to protect programme content owner's legitimate rights and interests.That realize this function employing is condition reception technique (Conditional Access).
The condition reception technique carries out source code flow to transmit after the scrambling exactly again, and scramble information also transmits in code stream after encrypting simultaneously.Television set obtains the code stream after the scrambling is carried out the keyword of descrambling by receiving and understand the scramble information after encrypting, and carries out descrambling according to the code stream of this keyword after to scrambling, and code stream is reduced into source code flow, realizes normal rating.For undelegated user, then can't carry out normal rating because enciphered message can't be understood.
Domestic cable digital TV has just adopted this condition reception technique at present.But the condition receiving algorithm that current cable television operators adopt has a variety of, and each condition receiving algorithm is all corresponding to a kind of Conditional Access Module that can plug.A television set is if support all conditions receiving algorithm will support a plurality of Conditional Access Modules.The user must manually plug appropriate module when the program that forwards to from the program by the scrambling of a kind of condition receiving algorithm by the scrambling of another kind of condition receiving algorithm.To bring very big inconvenience to the user like this.
In order to address this problem, European standard is at " Common Interface Specificationfor Conditional Access and other Digital Video Broadcasting DecoderApp
By above-mentioned processing procedure, because wherein some modules can be carried out descrambling to the code stream of scrambling, therefore can realize the scrambled code stream that uses any module that is connected on the television set to support is carried out the purpose of descrambling, and need not manually to plug module, bring facility in the use to the user.
Though the multimode support method that defines in the European standard need not manually to plug module, bring facility in the use to the user to a certain extent.But said method exists following shortcoming:
In above-mentioned multimode support method,, can bring too much burden between Conditional Access Module and television set to television set because code stream transmits continually.And, all Conditional Access Modules of will flowing through of the code stream in above-mentioned multimode support method, thus this delay that can increase the processing time can make efficient reduce.In addition, all Conditional Access Modules, whether it is relevant all with in running order with current code stream descrambling, can expend unnecessary electric energy like this.
Therefore need a kind of apparatus and method that can avoid the problems referred to above can support a plurality of Conditional Access Modules simultaneously again.
Summary of the invention
The technical problem to be solved in the present invention provides the device and method that is used to support multiple Conditional Access Module, make when satisfying user's ease of use, can also improve the processing speed of television set, reduce the consumption of electric energy, and can reduce the burden of television set code stream.
One aspect of the present invention provides a kind of device that is used to support multiple Conditional Access Module, comprising: the code stream analysis device is used for extracting the broadcaster's information and the condition receiving system information of the code stream that is received; Storage device is used for storage condition receiver module admin table in advance, and this Conditional Access Module admin table comprises the information that is associated with multiple Conditional Access Module; Processing unit is used for described Conditional Access Module admin table is retrieved, the condition receiving block message that is complementary with the broadcaster's information determining to be extracted with described code stream analysis device and condition receiving system information; And the condition module control device, be used for according to the condition receiving block message, open the corresponding condition receiver module, and close other Conditional Access Module.
In a kind of preferred embodiment, this condition module control device comprises controller and switching device, wherein, controller is according to described condition receiving block message, open the corresponding condition receiver module by the respective switch in the control line control switch device, and close other Conditional Access Module.
In another kind of preferred embodiment, the information that is associated with multiple Conditional Access Module comprises broadcaster's id information, condition receiving system id information, type of modules information and module interface information.
In another kind of preferred embodiment, this Conditional Access Module comprises a plurality of hardware condition receiver modules, and wherein, the hardware condition receiver module is built-in or the plug type module.
In another kind of preferred embodiment, this Conditional Access Module comprises a plurality of software condition receiver modules that are stored in the storage device.
In another kind of preferred embodiment, this is used to support that the device of multiple Conditional Access Module also comprises the control word draw-out device, is used for the executive software Conditional Access Module, to extract descrambled control words from code stream.
In a kind of preferred embodiment, when the software condition receiver module is downloaded, when copy or deletion action, perhaps when the plug operation takes place in the hardware condition receiver module, update condition receiver module admin table.
Another aspect of the present invention provides a kind of method that is used to support multiple Conditional Access Module, comprising: extract broadcaster's information and condition receiving system information in the code stream that is received; Storage condition receiver module admin table in advance, this Conditional Access Module admin table comprises the information that is associated with multiple Conditional Access Module; The Conditional Access Module admin table is retrieved, with the condition receiving block message of determining to be complementary with broadcaster's information that is extracted and condition receiving system information; And, open the corresponding condition receiver module, and close other Conditional Access Module according to the condition receiving block message.
In a kind of preferred embodiment, the information that is associated with multiple Conditional Access Module comprises broadcaster's id information, condition receiving system id information, type of modules information and module interface information.
In another kind of preferred embodiment, this Conditional Access Module comprises a plurality of hardware condition receiver modules, and wherein, the hardware condition receiver module is built-in or the plug type module.
In another kind of preferred embodiment, this Conditional Access Module comprises a plurality of software condition receiver modules that are stored in the storage device.
In another kind of preferred embodiment, when described condition receiving block message indication corresponding condition receiver module is the software condition receiver module, then, come the executive software Conditional Access Module, from code stream, to extract descrambled control words by the control word draw-out device.
In another kind of preferred embodiment, this method also comprise when the software condition receiver module is downloaded, when copy or deletion action, perhaps when the plug operation takes place in the hardware condition receiver module, update condition receiver module admin table.
Another aspect of the present invention also provides and has comprised the above-mentioned television set that is used to support the device of multiple Conditional Access Module.
By technique scheme as can be seen, the code stream among the present invention is only by handling with the corresponding Conditional Access Module of its algorithm, and other the Conditional Access Module that has no truck with of not flowing through can improve the processing speed of television set to code stream like this.Simultaneously, since not in running order with the irrelevant Conditional Access Module of current code stream, so these Conditional Access Modules just can not expend unnecessary electric energy.And, because code stream is only by the corresponding condition resume module, therefore after as long as television set sends code stream to the corresponding condition receiver module once, just can finish descrambling work, thereby avoid code stream between television set and Conditional Access Module, to carry out repeatedly coming and going, and then can alleviate the burden of television set.
Description of drawings
Fig. 1 is the existing schematic diagram of supporting the system of multiple Conditional Access Module;
Fig. 2 is the schematic diagram of system for TV set that comprises the device of the multiple Conditional Access Module of support of the present invention;
Fig. 3 is the block diagram of Conditional Access Module admin table of the present invention;
Fig. 4 is the schematic diagram of broadcaster's information of the present invention;
Fig. 5 is CA system identifier information of the present invention (ECM) schematic diagram;
Fig. 6 is the flow chart of the method for the multiple Conditional Access Module of support of the present invention;
Fig. 7 is a CA module controls device of the present invention.
Embodiment
Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.
Fig. 2 is television set 100 schematic diagrames that comprise the device (being designated hereinafter simply as supportive device) of the multiple Conditional Access Module of support of the present invention (being designated hereinafter simply as the CA module).As shown in the figure, television set 100 can comprise receiving demodulation device 201, is used for receiving broadcast signal, and through the demodulation output code flow; Supportive device is used for supporting multiple Conditional Access Module; Decoder 206 is used for code stream is decoded; Audio frequency and video processing unit 207 is used for decoded audio-video signal is synthesized and output; Descrambler 208 is used for scrambled code stream is carried out descrambling; With software module pond 299, be used for storing for example software CA module 210,211 and 212.Wherein, be used for supporting that the supportive device of multiple Conditional Access Module can comprise code stream analysis device 202, be used for from code stream, extracting broadcaster's information and condition receiving system information; Storage device 203 is used for storing in advance CA module management table; Central processing unit 204 is used for carrying out various processing; And CA module controls device 205, be used for the Conditional Access Module of switch operating.Supportive device can also comprise control word draw-out device 209, this control word draw-out device 209 is used for the software condition receiver module 210-212 in the executive software module pond 299, determine user identity by the smart card 3219 that is connected with television set, can from code stream, extract descrambled control words.The smart card 216-218 that occurs among Fig. 2 is the authentication information that is used for putting down in writing the user, and is connected respectively on the hardware CA module 213-215.Software condition receiver module in the software module pond 299 can be downloaded from broadcasting stream, perhaps can be from the network download of other modes, also can by external equipment copy into.Software module pond 299 shown in Fig. 2 is independent of storage device 203, but those skilled in the art is to be understood that in actual applications software module pond 299 also can be a part of memory space that is included in the storage device 203.Equally, control word draw-out device 209 also can be included in the central processing unit 204, is perhaps directly replaced by central processing unit 204.
Below will the operation principle of the system for TV set of the device of the multiple Conditional Access Module of comprising of Fig. 2 of support of the present invention be described.
If code stream analysis device 202 do not have can success from code stream, extract broadcaster's id information and CA system identifier information, then the code stream in the code stream analysis device 202 directly being outputed to decoder 206 decodes, to obtain decoded audio-video signal, and this signal outputed in the audio frequency and video processing unit 207 handle, finish the synthetic and output of audio frequency and video, make observer can watch program.
If code stream analysis device 202 can successfully extract broadcaster's id information and CA system identifier information from code stream, then, be sent to central processing unit 204 with this broadcaster's id information and CA system identifier information.
If it is consistent with a certain broadcaster ID in the CA module management table that central processing unit 204 retrieves the broadcaster ID that code stream analysis device 202 extracted, and, the CA system identifier that code stream analysis device 202 is extracted is consistent with this broadcaster ID pairing CA system identifier in table, then can determine the pairing CA module of current code stream.
The result that central processing unit 204 will retrieve, for example, module interface information 304 is sent to CA module controls device 205.CA module controls device 205 is opened corresponding C A module according to the module interface information 304 that retrieves, and closes other CA module.
CA module controls device 205 comprises controller 701 and the switching device that comprises switch 703,704,705 and 706, as shown in Figure 7.
If the module interface information 304 that receives is expressed as hardware condition receiver module interface, controller 701 is according to the indication of the module interface information of receiving 304, by the switch in the control line 702 control switch devices, opening relevant hardware CA module, and close other CA module.After the hardware CA module that is unlocked is determined user identity by connected smart card, from code stream, extract descrambled control words, then this control word is sent to descrambler 208, descrambler 208 uses this control word that scrambled code stream is carried out scramble process, the clear stream that obtains is output to decoder 206, carries out decoding processing.
If the module interface information 304 that receives is expressed as software condition receiver module interface, then controller 701 is according to the indication of the module interface information of receiving 304, corresponding software CA module in the initiate control word draw-out device 209 executive software module ponds 299, determine user identity by the smart card that is connected with television set, and from code stream, extract descrambled control words, then this control word is sent to descrambler 208, carry out scramble process, and the clear stream behind the descrambling is outputed to decoder 206, carry out decoding processing.Control word draw-out device 209 is devices independently in the drawings, but in actual applications, control word draw-out device 209 also can be the part in the central processing unit or directly be replaced by central processing unit.
For the ease of understanding, by two specific embodiments the present invention is explained in detail below in conjunction with accompanying drawing.
＜embodiment 1 〉
After TV set aerial receives broadcast singal, carry out modulation through receiving demodulation device 201 and handle (S601).The code stream of exporting after the demodulation is imported in the code stream analysis device 202.Code stream analysis device 202 is finished broadcaster ID and is extracted processing (S602) and CA system identifier extraction processing (S603) after receiving this code stream.In the present embodiment, code stream analysis device 202 intercepts broadcaster's information table (BIT) from the code stream that receives.As shown in Figure 4, the PID of this broadcaster's information table (BIT) is 0x24, and form identifier 401 is 0xC4.Code stream analysis device 202 extracts the broadcaster ID 402 of identification of broadcast person identity from broadcaster's information table.In the present embodiment, the value of broadcaster ID 402 is CCTV.
Simultaneously, code stream analysis device 202 intercepts Program Association Table (PAT) from the code stream that receives.As shown in Figure 5, in the present embodiment, the PID of Program Association Table (PAT) is 0x00, and form identifier 501 is 0x00.In Program Association Table (PAT), indicated the PID 502 of transmission Program Map Table (PMT).In Program Map Table PMT (its form identifier is 0x02) 503, not only comprise video, audio frequency, timer reference of programs (Program Clock Reference, Packet Elementary Stream (Packetized Elementary Stream such as PCR), PES) Bao identifier (PID), also comprise Entitlement Control Message (Entitlement Control Message, identifier ECM) (PID) 504 that the condition that is used for receives.The code stream analysis device obtains the CA system identifier 506 of corresponding current scrambling code stream from Entitlement Control Message ECM (its form identifier is 0x80 or 0x81) 505.In the present embodiment, this value is represented the CA algorithm No. 1.
After extraction work is finished, extract determination processing (S604) as a result.If code stream analysis device 202 successfully obtains broadcaster's information and condition receiving system information, then extract as a result determination processing (S604) return value and be " Yes ", otherwise be " No ".
If extracting as a result, the return results of determination processing (S604) is " No ", then directly enter decoding processing (S609), be about to the code stream in the code stream analysis device 202, directly output to after 206 pairs of code streams of decoder decode, obtain the audio-video signal of recovery, and this signal is outputed to audio frequency and video processing unit 207, carry out audio frequency and video output and handle (S610).
The return results of determination processing (S604) is " Yes " if extract as a result, then enters CA module query processing (S605).Broadcaster ID is extracted broadcaster ID and the CA system identifier of handling (S602) acquisition extract the CA system identifier that obtains in the processing (S603), be sent to central processing unit 204.Central processing unit 204 is according to these data, and inquiry is stored in the CA module management table in the storage device 203 in advance.If it is consistent with a certain broadcaster ID 301 in the CA module management table that broadcaster ID extracts the broadcaster ID that handles (S602) extraction, and, it is consistent with these broadcaster ID 301 pairing CA system identifiers that the CA system identifier extracts the CA system identifier of handling (S603) extraction, and then the module of corresponding current code stream promptly can be determined.As mentioned above, in the present embodiment, it is CCTV that broadcaster ID extracts the broadcaster ID that handles (S602) extraction, it is No. 1 CA system that the CA system identifier extracts the CA system identifier of handling (S603) extraction, by CA module management table, then can determine the pairing type of modules 303 of current example is hardware card, and its corresponding module interface 304 is hardware condition receiver module 1 interface identifier.
Hardware CA module 1 213 extracts descrambled control words after determining user identity by connected smart card 1 216 from code stream, then this control word is sent to descrambler (208).Descrambler 208 uses this control word that scrambled code stream is carried out scramble process (S608).Clear stream behind the descrambling that obtains outputs to decoder 206, carries out decoding processing (S609).Decoder 206 restores audio-video signal from code stream after clear stream is decoded, and it is outputed to audio frequency and video processing unit 207, carries out audio frequency and video output and handles (S610).The user just can enjoy corresponding program.
It will be appreciated by those skilled in the art that, if have the descrambling function in the hardware condition receiver module 213,214,215, and scramble process (S608) just sends the code stream behind the descrambling (clear stream) to television set after having finished in this module, then descrambler 208 no longer carries out scramble process.At this moment, also can set up a switching device, make clear stream stride across descrambler 208 and directly arrive decoder 206, perhaps omit descrambler 208.
＜embodiment 2 〉
Be that example elaborates with the program that receives No. 2 CA systems scrambling that the Chinese Central Television (CCTV) adopts below.
After TV set aerial receives broadcast singal, carry out modulation through receiving demodulation device 201 and handle (S601).The code stream of exporting after the demodulation is imported in the code stream analysis device 202.Code stream analysis device 202 is finished broadcaster ID and is extracted processing (S602) and CA system identifier extraction processing (S603) after receiving this code stream.Central processing unit 204 according to broadcaster ID extract to handle broadcaster ID that (S602) obtain and CA system identifier extract handle the CA system identifier that obtains in (S603) storage and the CA module management table in the storage device 203 inquired about after, draw current example type of modules information 303 indication be software function, and its corresponding module interface information 304 indications is the entry address of software condition receiver module 1.
CA module controls device 205 receives type of modules information 303 for behind the software function, carries out the shunting of CA module and handles (S607).Controller 701 disconnects all by control line 702 and leads to the switch 703 of hardware condition receiver module 213,214,215,704,705, make code stream can not flow to the hardware condition receiver module, and make all hardware Conditional Access Module be in non operating state by control line 702.Simultaneously by the software condition receiver module 1 210 in the control switch 706 initiate control word draw-out devices 209 executive software module ponds 299, behind the smart card 1 219 definite user identity that are connected with television set, from code stream, extract descrambled control words, then this control word is sent to descrambler 208, carries out scramble process (S608).Clear stream behind the descrambling is output to decoder 206, carries out decoding processing (S609).Decoder 206 restores audio-video signal from code stream after clear stream is decoded, and it is outputed to audio frequency and video processing unit 207, carries out audio frequency and video output and handles (S610).The user just can enjoy corresponding program.
If have the descrambling function in the software condition receiver module 210,211,212, and scramble process (S608) finishes in this module, and then descrambler 208 no longer carries out scramble process.At this moment, also can set up a switching device, make clear stream stride across descrambler 208 and directly arrive decoder 206, perhaps omit descrambler 208.
Among the present invention, also be freely to switch along with the variation of code stream between software CA module and the hardware CA module.For example, the program of No. 2 CA systems scrambling of adopting in the selective reception Chinese Central Television (CCTV) of user elder generation, change again then under the situation of the program that platform to BTV adopts the scrambling of No. 1 CA system, at first, use software condition receiver module 1 210 to carry out scramble process as described in the embodiment 2.After changing platform, receiving demodulation device 201 receives new broadcast singal, includes broadcaster ID different with in progress TV programme and CA system identifier in the code stream of exporting after the demodulation.After code stream is transferred into code stream analysis device 202, this device obtains new broadcaster ID and CA system identifier from the code stream of receiving after, carry out the reallocation of module and handle, CA module controls device will be closed the hardware CA module of using 1 by switching device, and switch to software CA module 1.
The maintenance of CA module management table of the present invention is described at last.For the hardware condition receiver module, after module was inserted slot, CA module controls device 205 read broadcaster ID and CA system identifier corresponding to this module after discerning the insertion of new module automatically from module.And being sent to central processing unit 204 logins.Central processing unit 204 is inquired about the CA module management table that is stored in advance in the storage device 203 according to broadcaster ID and CA system identifier, if a certain broadcaster ID in should showing is identical with it respectively with the CA system identifier, then rewriting type of modules information is hardware card, and the identifier of hardware condition receiver module interface is write in this module interface information.
For the software condition receiver module, after central processing unit 204 downloads to the software condition receiver module and this software condition receiver module is stored in software module pond 299, broadcaster ID that obtains during according to download and the inquiry of CA system identifier are stored in CA module management table in the storage device 203 in advance, if a certain broadcaster ID in should showing is identical with it respectively with the CA system identifier, then rewriting type of modules information is software function, and the entry address of software condition receiver module is write in this module interface information.
The explanation of the disclosed embodiment that more than provides is to make any technical staff of this area can make and use the present invention.To those skilled in the art, the various changes of these embodiment are obvious, and the generic principles of definition here may be used on other embodiment, and can not depart from essence of the present invention and category.Thereby, the embodiment shown in the present invention is not subject to here, but meet and principle disclosed herein and novelty the most wide consistent scope.
Claims (14)
1. device that is used to support multiple Conditional Access Module comprises:
The code stream analysis device is used for extracting the broadcaster's information and the condition receiving system information of the code stream that is received;
Storage device is used for storage condition receiver module admin table in advance, and described Conditional Access Module admin table comprises the information that is associated with multiple Conditional Access Module;
Processing unit is used for described Conditional Access Module admin table is retrieved, the condition receiving block message that is complementary with the broadcaster's information determining to be extracted with described code stream analysis device and condition receiving system information; And
The condition module control device is used for according to described condition receiving block message, opens the corresponding condition receiver module, and closes other Conditional Access Module.
2. the device that is used to support multiple Conditional Access Module according to claim 1, it is characterized in that described condition module control device comprises controller and switching device, the respective switch that described controller is controlled in the described switching device by control line according to described condition receiving block message is opened the corresponding condition receiver module, and closes other Conditional Access Module.
3. the device that is used to support multiple Conditional Access Module according to claim 1, it is characterized in that the information that described and multiple Conditional Access Module is associated comprises broadcaster's id information, condition receiving system id information, type of modules information and module interface information.
4. the device that is used to support multiple Conditional Access Module according to claim 1 is characterized in that, described Conditional Access Module comprises a plurality of hardware condition receiver modules, and described hardware condition receiver module is built-in or the plug type module.
5. the device that is used to support multiple Conditional Access Module according to claim 1 is characterized in that, described Conditional Access Module comprises a plurality of software condition receiver modules that are stored in the described storage device.
6. the device that is used to support multiple Conditional Access Module according to claim 5 is characterized in that described device also comprises the control word draw-out device, is used for the executive software Conditional Access Module, to extract descrambled control words from code stream.
7. according to claim 4 or the 5 described devices that are used to support multiple Conditional Access Module, it is characterized in that, when the software condition receiver module is downloaded, when copy or deletion action, perhaps when the plug operation takes place the hardware condition receiver module, upgrade described Conditional Access Module admin table.
8. method that is used to support multiple Conditional Access Module comprises:
Extract broadcaster's information and condition receiving system information in the code stream that is received;
Storage condition receiver module admin table in advance, described Conditional Access Module admin table comprises the information that is associated with multiple Conditional Access Module;
Described Conditional Access Module admin table is retrieved, with the condition receiving block message of determining to be complementary with broadcaster's information that is extracted and condition receiving system information; And
According to described condition receiving block message, open the corresponding condition receiver module, and close other Conditional Access Module.
9. method according to claim 8 is characterized in that,
The information that described and multiple Conditional Access Module is associated comprises broadcaster's id information, condition receiving system id information, type of modules information and module interface information.
10. method according to claim 8 is characterized in that,
Described Conditional Access Module comprises a plurality of hardware condition receiver modules, and described hardware condition receiver module is built-in or the plug type module.
11. method according to claim 8 is characterized in that, described Conditional Access Module comprises a plurality of software condition receiver modules that are stored in the described storage device.
12. method according to claim 11, it is characterized in that, when described condition receiving block message indication corresponding condition receiver module is the software condition receiver module, then by the control word draw-out device, come the executive software Conditional Access Module, from code stream, to extract descrambled control words.
13. method according to claim 12, it is characterized in that, described method also comprises when the software condition receiver module is downloaded, when copy or deletion action, perhaps when the plug operation takes place the hardware condition receiver module, upgrade described Conditional Access Module admin table.
14. a television set comprises the described device that is used to support multiple Conditional Access Module of one of claim 1-7.
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| CN102497588B (en) * | 2011-11-22 | 2014-06-04 | 四川长虹电器股份有限公司 | Router with smart card for digital televisions and descrambling method |
| JP2014096133A (en) * | 2012-10-10 | 2014-05-22 | Ricoh Co Ltd | Transmission terminal, transmission system, and program |
| CN104883594A (en) * | 2015-06-04 | 2015-09-02 | 深圳市九洲电器有限公司 | Method and system for switching card CA (conditional access) and card-free CA of set-top box |
| CN106851391A (en) * | 2015-12-03 | 2017-06-13 | 国家新闻出版广电总局广播科学研究院 | A kind of condition receiving method and system for intelligent operating system |
| CN105959791B (en) * | 2016-04-21 | 2019-12-03 | 深圳Tcl数字技术有限公司 | The playback method and device of TV programme |
| CN106210816A (en) * | 2016-07-18 | 2016-12-07 | 青岛海信电器股份有限公司 | A kind of transport stream TS de-scrambling method and device |
| CN106454299A (en) * | 2016-11-29 | 2017-02-22 | 努比亚技术有限公司 | Screen projection method and device between terminals, and terminal |
| CN106657837B (en) * | 2016-12-02 | 2021-12-14 | 海信视像科技股份有限公司 | Television system switching method and television |
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| CN1985516A (en) * | 2004-07-14 | 2007-06-20 | 松下电器产业株式会社 | Method for authenticating and executing application |
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| CN101453615A (en) | 2009-06-10 |
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