CN102202237A - Channel browsing display method, device and receiver for digital television - Google Patents
Channel browsing display method, device and receiver for digital television Download PDFInfo
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- CN102202237A CN102202237A CN2010101308632A CN201010130863A CN102202237A CN 102202237 A CN102202237 A CN 102202237A CN 2010101308632 A CN2010101308632 A CN 2010101308632A CN 201010130863 A CN201010130863 A CN 201010130863A CN 102202237 A CN102202237 A CN 102202237A
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Abstract
The invention discloses a channel browsing display method for a digital television. The method comprises the following steps of: receiving a television program transport stream; acquiring the encrypted information of a program signal from the television program transport stream; judging whether the program signal is encrypted or not according to the encrypted information; if the program signal is judged not to be encrypted, performing audio and video decoding on the program signal, outputting generated audio and video information and transmitting the audio and video information on a corresponding program browsing window of a display terminal; and if the program signal is judged to be encrypted, acquiring service information from the program signal, outputting the service information and displaying the service information on the corresponding program browsing window of the display terminal. The embodiment of the invention also provides the channel browsing display device for the digital television and a digital television receiver. By the method, the device and the receiver, a digital television user still can know program contents played by an encrypted channel under the condition of not buying a conditional access module (CAM) card and a smart card, so the doubts of the user about the encrypted channel are erased.
Description
Technical field
The present invention relates to digital TV field, relate in particular to a kind of channel browsing display packing, device and receiver of Digital Television.
Background technology
In existing digital television system, nearly tens even up to a hundred program channels are arranged usually, the user is comparatively inconvenience when browsing and switch program.
Existing a kind of channel browsing display mode is just listed channel and channel designation with the form of catalogue.As shown in Figure 1, only the name of display program and platform number can't obtain other more information.
Another existing channel browsing display mode is: show the current video image of a plurality of channels simultaneously on video screen, as shown in Figure 2.This channel browsing display packing can generate a program window for each program channel, shows with the program window multipage with program channel.
Existing digital television program is numerous, but many channels belong to the program of paying in addition.Therefore, if watch all TV programme, (conditional access module, CAM) card and smart card are decrypted the encoded channel in the digital television signal, thereby obtain the image data of encoded channel to need to buy Conditional Access Module.But it is very high to buy CAM card and smart card expense, and for most of users, many encoded channels are again not essential.
The inventor in the embodiment of this invention, there are the following problems to find prior art: for the encoded channel of Digital Television, if the user does not buy CAM card or smart card, no matter be above-mentioned tabulation channel browsing mode, or multiwindow channel browsing mode, all can't demonstrate any programme information of encoded channel, as shown in Figure 3, encoded channel can be shown as no signal condition.
Summary of the invention
The purpose of the embodiment of the invention provides a kind of channel browsing display packing of Digital Television, comprising: the received television program transport stream; From described TV programme transport stream, obtain the enciphered message of programme signal; Judge according to described enciphered message whether described programme signal is encrypted; If it is encrypted that described programme signal does not have, then described programme signal is carried out audio/video decoding, and with audio/video information output that generates and the program browsing window that is presented at correspondence on the display terminal; If described programme signal is encrypted, then obtains the information on services in the described programme signal, and program browsing window corresponding on the display terminal is exported and be presented to described information on services.
The embodiment of the invention also provides a kind of channel browsing display unit of Digital Television, comprising: the transport stream receiving element is used for the received television program transport stream; The enciphered message acquiring unit is used for obtaining from described TV programme transport stream the enciphered message of programme signal; Encrypt judging unit, be used for judging according to described enciphered message whether described programme signal is encrypted; The information on services acquiring unit is used for obtaining the information on services in the described programme signal when described programme signal is encrypted; Output unit is used for exporting the information on services of described programme signal when described programme signal is encrypted, and does not have to export described programme signal when encrypted in described programme signal.
The embodiment of the invention also discloses a kind of digital television receiver, comprise and transfer platform module, demultiplexing module and decoder module, described digital television receiver also comprises; The transport stream receiving element is used for the received television program transport stream; The enciphered message acquiring unit is used for obtaining from described TV programme transport stream the enciphered message of programme signal; Encrypt judging unit, be used for judging according to described enciphered message whether described programme signal is encrypted; The information on services acquiring unit is used for obtaining the information on services in the described programme signal when described programme signal is encrypted; Output unit is used for exporting the information on services of described programme signal when described programme signal is encrypted, and does not have to export described programme signal when encrypted in described programme signal; Wherein, when the programme signal in the described TV programme transport stream is judged as when not encrypting, described output unit is exported described programme signal and is given described demultiplexing module, described demultiplexing module is distinguished different programs and is extracted corresponding audio/video information according to described programme signal, after the described decoder module of process is decoded to described audio/video information, be sent to program browsing window corresponding on the display terminal and show; When the programme signal in the described TV programme transport stream is judged as encryption, the information on services acquiring unit obtains the information on services in the described programme signal, and by output unit the program browsing window that described information on services is sent to correspondence on the display terminal is shown.
Digital TV channel browse displays method, device and the digital television receiver of the embodiment of the invention, can make digital cable customers under the situation of not buying CAM card and smart card, can recognize the programme content that encoded channel is play equally, remove the doubt of spectators encoded channel.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute limitation of the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of a kind of channel browsing display mode of prior art;
Fig. 2 is the schematic diagram of the another kind of channel browsing display mode of prior art;
Fig. 3 is the display mode schematic diagram of the channel browsing display mode of prior art for encoded channel;
Fig. 4 is the method flow diagram of an embodiment of digital TV channel browse displays method of the present invention;
Fig. 5 is the method flow diagram of another embodiment of digital TV channel browse displays method of the present invention;
Fig. 6 is the structural representation of an embodiment of digital TV channel browse displays device of the present invention;
Fig. 7 is the structural representation of another embodiment of digital TV channel browse displays device of the present invention;
Fig. 8 is the structural representation of an embodiment of digital television receiver of the present invention;
Fig. 9 is the digital TV channel browse displays method and the device effect schematic diagram in use thereof of the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the embodiment of the invention is described in further details below in conjunction with accompanying drawing.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
Embodiment one:
Fig. 4 is the method flow diagram of an embodiment of digital TV channel browse displays method of the present invention.As shown in the figure, described digital TV channel browse displays method comprises:
Step S101 obtains the TV programme transport stream.(Transport Stream is to resolve resultant by the radiofrequency signal (RF signal) of transferring the platform module that TV station is sent TS) to program transport streams.Transfer the platform module to comprise multimodal tuner and demodulator, therefore can receive and resolve ground digital, ground simulation, cabled digital and four kinds of transport stream of wired simulation.Wherein, tuner receives the high-frequency signal from wired network, finishes channel-decoding by demodulator, isolates to comprise sound, video and other data information transmission stream from carrier wave.Generally comprise a plurality of sounds, video flowing and information on services in the transport stream.
Step S102 obtains the enciphered message of programme signal from described TV programme transport stream.In the ground digital that can obtain, ground simulation, cabled digital and four kinds of transport stream of wired simulation, there is not the problem of encryption in these two kinds of transport stream of ground simulation and wired simulation, and ground digital does not have ciphered program yet at present, therefore these three kinds of transport stream can search for out behind the program directly that screenshotss show, and cabled digital then needs the judgement that is decrypted.In the program transport streams of being obtained, comprise the transmits data packets of many 188 bytes, independent identification symbol is arranged in each packet, whether identify program encrypted.Whether in the present embodiment, it is encrypted to identify this packet in first usefulness " 0 " of packet or " 1 ", and therefore only need read first just can judge whether the program in the program transport streams is encrypted.
Step S103 judges according to described enciphered message whether described programme signal is encrypted.As shown in step 2, if come identification data packet encrypted, then read first when " 1 " with " 1 ", can think that this programme signal is encrypted.
Step S104, encrypted if described programme signal does not have, then described programme signal is carried out audio/video decoding, and with audio/video information output that generates and the program browsing window that is presented at correspondence on the display terminal.On display terminal, generate the program browsing window of a correspondence for each program channel.In the present embodiment, can preset one page and show several program window, show 4 or 6 such as one page, perhaps can be by the program window number of every page of demonstration of User Defined, show with program window multipage program channel, the program window that generates also can zoom in or out according to user's operation, and each window also is not limited to onesize.Demultiplexing module and the decoder module of this step application in the digital television receiver, the program data that does not have to encrypt is at first sent into demodulation multiplexer, distinguish different programs according to program data, extract corresponding sound, video flowing and data flow, send into MPEG-2 decoder and the corresponding software of resolving, finish the reduction of digital information.The MPEG-2 decoder is finished the decompression of sound, vision signal, through video encoder and audio frequency D/A conversion, restores simulation sound, vision signal, shows high quality graphic on conventional color television set, and the multichannel sterego program is provided.
Step S105 if described programme signal is encrypted, then obtains the information on services in the described programme signal, and program browsing window corresponding on the display terminal is exported and be presented to described information on services.Information on services is present in the program data of TV programme transport stream, and it is not encrypted, and therefore can directly extract and send.The information on services of the encrypted program that wherein, obtains comprises programm name, sound channel mode, program classification, program start time, program end time and resolution etc.Resolution comprises SD/HD, and sound channel mode comprises AC-3, Dolby, 5.1 etc., and program classification comprises news, video display, literature and art, physical culture, life, opera, economical or the like.
Embodiment two:
Fig. 5 is the method flow diagram of another embodiment of digital TV channel browse displays method of the present invention.As shown in the figure, the digital TV channel browse displays method of present embodiment comprises:
Step S201 in the receiver of multi-mode (ground, wired, satellite etc.) Digital Television, transfers the platform module to receive radiofrequency signal from TV station or radio station, and resolves to program transport streams.Wherein, transfer the platform module to comprise multimodal tuner and demodulator, can receive and resolve ground digital, ground simulation, cabled digital and four kinds of transport stream of wired simulation.Wherein, tuner receives the high-frequency signal from wired network, finishes channel-decoding by demodulator, isolates to comprise sound, video and other data information transmission stream from carrier wave.
Step S202, the program transport streams that obtaining step S201 parses.Generally comprise a plurality of sounds, video flowing and information on services in the transport stream.
Step S203 judges whether the program in the described program transport streams is encrypted.In the ground digital that can obtain, ground simulation, cabled digital and four kinds of transport stream of wired simulation, there is not the problem of encryption in these two kinds of transport stream of ground simulation and wired simulation, and ground digital does not have ciphered program yet at present, therefore these three kinds of transport stream can search for out behind the program directly that screenshotss show, and cabled digital then needs the judgement that is decrypted.In the program transport streams of being obtained, comprise the transmits data packets of many 188 bytes, independent identification symbol is arranged in each packet, whether identify program encrypted.Whether in the present embodiment, it is encrypted to identify this packet in first usefulness " 0 " of packet or " 1 ", and therefore only need read first just can judge whether the program in the program transport streams is encrypted.In the present embodiment, encrypted with " 1 " sign program, if first of packet is " 1 ", then change step S204 over to, if first is " 0 ", then change step S205 over to.
Step S204, program does not have encrypted, and the audio/video information that then obtains the frame module of program and export display program is in the small video frame.In this step, at first adopt demodulation multiplexer to be used for distinguishing different programs, extract corresponding sound, video flowing and data flow, send into MPEG-2 decoder and the corresponding software of resolving, finish the reduction of digital information.The MPEG-2 decoder is finished the decompression of sound, vision signal, through video encoder and audio frequency D/A conversion, restores simulation sound, vision signal, shows high quality graphic on conventional color television set, and the multichannel sterego program is provided.
Step S205 if program is encrypted, judges whether program has decrypt authorized again.In program stream, there is the data bit of special-purpose sign to represent whether program is encrypted, the checking data position that the deciphering of program is arranged in smart card simultaneously, on the checking data position correspondence of checking data position of deciphering and encryption, prove that program has decrypt authorized, at this moment, program just can have been deciphered.If this program has decrypt authorized, then change step S206 over to, if there is not decrypt authorized, then change step S207 over to.
Step S206 if described program has decrypt authorized, further judges whether to exist deciphering module.In the present embodiment, deciphering module is descrambler and smart card, and descrambler reads the scramble information in the middle of the TV code flow, and provides the keyword of deciphering by smart card, can obtain frame module and obtain wherein audio/video information.If deciphering module is arranged, change step S208 over to, if there is not deciphering module, change step S207 over to.
Step S207 if encrypted program does not have decrypt authorized or decrypt authorized is in time arranged, but does not but have deciphering module, then obtains the information on services of encrypted deciphering, exports and is presented in the small video frame.The information on services of the encrypted program that wherein, obtains comprises programm name, sound channel mode, program classification, program start time, program end time and resolution etc.Resolution comprises SD/HD, and sound channel mode comprises AC-3, Dolby, 5.1 etc., and program classification comprises news, video display, literature and art, physical culture, life, opera, economical or the like.
Step S208, encrypted program has decrypt authorized, and has decryption block, then utilizes deciphering module that encrypted deciphering is decrypted.Descrambler in the deciphering module reads the scramble information in the middle of the TV code flow, and provides the keyword of deciphering by smart card, can obtain frame module and obtain wherein audio/video information, as the normal output of program that not have encryption and be presented in the small video frame.
Embodiment three:
Fig. 6 is the structural representation of an embodiment of digital TV channel browse displays device of the present invention.As shown in the figure, the digital TV channel browse displays device of present embodiment comprises:
Transport stream receiving element 101 is used for the received television program transport stream.Program transport streams is to resolve resulting by the radiofrequency signal of transferring the platform module that TV station or radio station are sent.Transfer the platform module to comprise multimodal tuner and demodulator, can receive and resolve ground digital, ground simulation, cabled digital and four kinds of transport stream of wired simulation.Wherein, tuner receives the high-frequency signal from wired network, finishes channel-decoding by demodulator, isolates to comprise sound, video and other data information transmission stream from carrier wave.Generally comprise a plurality of sounds, video flowing and information on services in the transport stream.
Enciphered message acquiring unit 102 is used for obtaining from described TV programme transport stream the enciphered message of programme signal.In the ground digital that can obtain, ground simulation, cabled digital and four kinds of transport stream of wired simulation, there is not the problem of encryption in these two kinds of transport stream of ground simulation and wired simulation, and ground digital does not have ciphered program yet at present, therefore these three kinds of transport stream can search for out behind the program directly that screenshotss show, and cabled digital then needs the judgement that is decrypted.In the program transport streams of being obtained, comprise the transmits data packets of many 188 bytes, independent identification symbol is arranged in each packet, whether identify program encrypted.Whether in the present embodiment, it is encrypted to identify this packet in first usefulness " 0 " of packet or " 1 ", and therefore only need read first just can judge whether the program in the program transport streams is encrypted.
Encrypt judging unit 103, be used for judging according to described enciphered message whether described programme signal is encrypted.If come identification data packet encrypted, when encrypting judging unit 103 and reading first of programme signal, can think that this programme signal is encrypted for " 1 " with " 1 ".
Information on services acquiring unit 104 is used for obtaining the information on services in the described programme signal when described programme signal is encrypted.Information on services is arranged in program transport streams, and the information on services of the encrypted program that obtains comprises programm name, sound channel mode, program classification, program start time, program end time and resolution etc.Resolution comprises SD/HD, and sound channel mode comprises AC-3, Dolby, 5.1 etc., and program classification comprises news, video display, literature and art, physical culture, life, opera, economical or the like.
Embodiment four:
Fig. 7 is the structural representation of another embodiment of digital TV channel browse displays device of the present invention.As shown in the figure, the digital TV channel browse displays device of present embodiment also comprises except comprising the unit in embodiment illustrated in fig. 6:
Decrypt authorized judging unit 106 is used to judge whether described encrypted programme information has decrypt authorized, if having, then can be decrypted described encrypted programme information, if do not have, then can not be decrypted described encrypted data.
Deciphering judging unit 107 is used to judge whether to exist the decryption device of deciphering described encrypted programme information.In the present embodiment, comprise descrambler and smart card apparatus in the deciphering module, wherein, descrambler reads the scramble information in the middle of the TV code flow, and provide the keyword of deciphering by smart card, can obtain frame module and obtain wherein audio/video information, as not having the normal output of program of encrypting and being presented in the corresponding program browsing window.
Fig. 8 is the structural representation of an embodiment of digital television receiver of the present invention.In the digital television receiver of present embodiment, comprise and transfer platform module 10, demultiplexing module 20 and decoder module 30, the radiofrequency signal of transferring platform module 10 to receive from TV station, and resolve to program transport streams.Wherein, transfer the platform module to comprise multimodal tuner and demodulator, can receive and resolve ground digital, ground simulation, cabled digital and four kinds of transport stream of wired simulation.Tuner receives the high-frequency signal from wired network, finishes channel-decoding by demodulator, isolates the program transport streams that comprises sound, video and other data message from carrier wave.
The digital television receiver of present embodiment also comprises: transport stream receiving element 101 is used to receive the TV programme transport stream that sends from described accent platform module 10; Enciphered message acquiring unit 102 is used for obtaining from described TV programme transport stream the enciphered message of programme signal; Encrypt judging unit 103, be used for judging according to described enciphered message whether described programme signal is encrypted; When program data does not have when encrypted, directly send the TV programme transport stream to demultiplexing module 20 by output unit 105 and distinguish different programs, and extract corresponding sound, video flowing and data flow, send into the reduction that decoder module 30 is finished digital information.Decoder module 30 is the MPEG-2 decoder, the decompression of sound, vision signal be can finish,, simulation sound, vision signal restored through video encoder and audio frequency D/A conversion, on conventional color television set, show high quality graphic, and the multichannel sterego program is provided.When program data is encrypted, send the TV programme transport stream to information on services acquiring unit 104, obtain the information on services of encrypted program data, and the program browsing window that described information on services output unit 105 is sent to display terminal is shown.
Wherein, digital television receiver also comprises: decrypt authorized judging unit 105, be used to judge whether described encrypted program data has decrypt authorized, if decrypt authorized is arranged, then can be decrypted described encrypted program data, if there is not decrypt authorized, then can not be decrypted described encrypted data; Deciphering judging unit 106 is used to judge whether to exist the decryption device of deciphering described encrypted program data.If decrypt authorized is arranged and has decryption device, then can the program data of encrypting be decrypted, make it as the normal program browsing window that is presented at correspondence of normal no ciphered program stream.
Fig. 9 is the digital TV channel browse displays method and the device effect schematic diagram in use thereof of the embodiment of the invention.During use, for the Digital Television of not using the deciphering card, encoded channel is rendered as by original no signal condition and shows the information on services state, promptly can show the channel designation, programm name, program classification, programme content of encoded channel and program start and end time or the like information.As shown in Figure 9, before not using technology of the present invention, the Phoenix Satellite TV that belongs to encoded channel is shown as no signal condition, people's any information of channel hereto can not learn, but after utilizing technology of the present invention, originally no signal condition changes the information on services that shows the positive broadcast items of this channel, channel designation: Phoenix Satellite TV into; Programm name: the big visual field of phoenix; Program classification: current events report; Programme content: host: Wu Xiaoli; The program duration: 18:10～18:40.The user that these information on services block not deciphering can learn the programme content that encoded channel broadcasts equally, has removed the doubt of user to encoded channel, also can guides user block according to watching the needs measurement whether buy deciphering.
Digital TV channel browse displays method, device and the digital television receiver of the embodiment of the invention, can make digital cable customers under the situation of not buying CAM card and smart card, can recognize the programme content that encoded channel is play equally, remove the doubt of spectators encoded channel.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. the channel browsing display packing of a Digital Television is characterized in that, described method comprises:
The received television program transport stream;
From described TV programme transport stream, obtain the enciphered message of programme signal;
Judge according to described enciphered message whether described programme signal is encrypted;
If it is encrypted that described programme signal does not have, then described programme signal is carried out audio/video decoding, and with audio/video information output that generates and the program browsing window that is presented at correspondence on the display terminal; If described programme signal is encrypted, then obtains the information on services in the described programme signal, and program browsing window corresponding on the display terminal is exported and be presented to described information on services.
2. the method for claim 1 is characterized in that, the program browsing window of correspondence on the described display terminal comprises:
Show a plurality of program browsing windows on display terminal simultaneously, described program browsing window and program channel are one to one.
3. the method for claim 1 is characterized in that, described received television program transport stream also comprises:
Reception comprises the program transport streams of ground digital transport stream, ground simulation transport stream, wired analogue transmission stream and cabled digital transport stream.
4. the method for claim 1 is characterized in that, if described programme signal is encrypted, then obtains the information on services of described programme signal, also comprises:
If decrypt authorized and decryption device are arranged, then described programme signal is decrypted, the audio/video information that obtains after the deciphering is presented at corresponding program browsing window.
5. as each described method of claim 1-4, it is characterized in that described information on services comprises:
Programm name, sound channel mode, program classification, program start time, program end time, programme content and resolution.
6. the channel browsing display unit of a Digital Television is characterized in that, described device comprises:
The transport stream receiving element is used for the received television program transport stream;
The enciphered message acquiring unit is used for obtaining from described TV programme transport stream the enciphered message of programme signal;
Encrypt judging unit, be used for judging according to described enciphered message whether described programme signal is encrypted;
The information on services acquiring unit is used for obtaining the information on services in the described programme signal when described programme signal is encrypted;
Output unit is used for exporting the information on services of described programme signal when described programme signal is encrypted, and does not have to export described programme signal when encrypted in described programme signal.
7. device as claimed in claim 6 is characterized in that, the program browsing window of correspondence on the described display terminal comprises:
Show a plurality of program browsing windows on display terminal simultaneously, described program browsing window and program channel are one to one.
8. device as claimed in claim 6 is characterized in that, described transport stream receiving element also is used to receive the program transport streams that comprises ground digital transport stream, ground simulation transport stream, wired analogue transmission stream and cabled digital transport stream.
9. device as claimed in claim 6 is characterized in that, described channel browsing display unit also comprises:
The decrypt authorized judging unit is used to judge whether described encrypted programme information has decrypt authorized, if having, then can be decrypted described encrypted programme information, if do not have, then can not be decrypted described encrypted data;
The deciphering judging unit is used to judge whether to exist the decryption device of deciphering described encrypted programme information.
10. as each described device of claim 6-9, it is characterized in that described information on services comprises:
Programm name, sound channel mode, program classification, program start time, program end time, programme content and resolution.
11. a digital television receiver comprises and transfers platform module, demultiplexing module and decoder module, it is characterized in that described digital television receiver also comprises;
The transport stream receiving element is used for the received television program transport stream;
The enciphered message acquiring unit is used for obtaining from described TV programme transport stream the enciphered message of programme signal;
Encrypt judging unit, be used for judging according to described enciphered message whether described programme signal is encrypted;
The information on services acquiring unit is used for obtaining the information on services in the described programme signal when described programme signal is encrypted;
Output unit is used for exporting the information on services of described programme signal when described programme signal is encrypted, and does not have to export described programme signal when encrypted in described programme signal;
Wherein, when the programme signal in the described TV programme transport stream is judged as when not encrypting, described output unit is exported described programme signal and is given described demultiplexing module, described demultiplexing module is distinguished different programs and is extracted corresponding audio/video information according to described programme signal, after the described decoder module of process is decoded to described audio/video information, be sent to program browsing window corresponding on the display terminal and show;
When the programme signal in the described TV programme transport stream is judged as encryption, the information on services acquiring unit obtains the information on services in the described programme signal, and by output unit the program browsing window that described information on services is sent to correspondence on the display terminal is shown.
12. digital television receiver as claimed in claim 11 is characterized in that, described digital television receiver also comprises:
The decrypt authorized judging unit is used to judge whether described encrypted programme information has decrypt authorized, if having, then can be decrypted described encrypted programme information, if do not have, then can not be decrypted described encrypted data;
The deciphering judging unit is used to judge whether to exist the decryption device of deciphering described encrypted programme information.
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| CN201010130863.2A CN102202237B (en) | 2010-03-22 | 2010-03-22 | A kind of channel browsing display method of Digital Television, device and receiver |
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