CN109195008A - A kind of playback method and device of scrambled program - Google Patents
A kind of playback method and device of scrambled program Download PDFInfo
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- CN109195008A CN109195008A CN201811347349.7A CN201811347349A CN109195008A CN 109195008 A CN109195008 A CN 109195008A CN 201811347349 A CN201811347349 A CN 201811347349A CN 109195008 A CN109195008 A CN 109195008A
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- 238000001824 photoionisation detection Methods 0.000 claims abstract description 91
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
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- 238000013475 authorization Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
- H04N21/4394—Processing of audio elementary streams involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
- H04N21/4398—Processing of audio elementary streams involving reformatting operations of audio signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The embodiment of the present invention discloses a kind of playback method of scrambled program, it is related to descrambling technique field, this method comprises: sending the audio, video data of the scrambled program to descrambling module and the descrambling information for descrambling the audio, video data when starting to play scrambled program；Wherein, the descrambling information includes the corresponding video PID of the video data, the corresponding multiple Audio PIDs of the audio data；After the audio, video data for receiving the descrambled program that the descrambling module returns, according to the corresponding video data of video PID audio data corresponding with any one chosen Audio PID, the descrambled program is played.The time-consuming that switching track process can be greatly reduced in this way avoids of short duration appearance flower screen, Caton phenomenon on display screen.
Description
Technical field
The embodiment of the present invention is related to the playback method and device of descrambling technique field more particularly to a kind of scrambled program.
Background technique
Currently, include multiple tracks in the audio data of more and more programs in the program played on smart television, it should
Multiple tracks have in different audio formats or different language, such as the audio data of a program comprising Chinese sound
Rail and English track, correspondingly, user has the demand for switching different tracks to these programs therewith.
And in order to carry out user authorization management to program, above-mentioned program is mostly to need by the scrambled program of encryption to this
The audio, video data of a little scrambled programs carries out descrambling could normal play program.
In the related technology, smart television obtains default when starting to play a scrambled program with multitone rail first
The corresponding audio pack mark (Packet Identifier, PID) of the audio data of track, then by the video counts of actual program
It is sent to descrambling module according to the descrambling information of corresponding video PID and Audio PID composition, then descrambling module is according to the descrambling
Information descrambles the video data of the scrambled program and the audio data of default track, just normal using default track later
Play scrambled program.
When user needs to switch to other tracks, as shown in fig. 1, when switching to English track by Chinese track, intelligence
Energy TV needs to reacquire the corresponding Audio PID of audio data of other newly selected tracks of user, then will work as prosthomere again
The corresponding video PID of purpose video data and the Audio PID reformulate new descrambling information, are sent to descrambling module, then solve
It disturbs module and descrambling is re-started to the video data of the scrambled program and newly selected audio data according to the new descrambling information, it
Other track normal play scrambled programs are just used afterwards, otherwise can not export the sound of other selected tracks.
Inventor's discovery: the process that descrambling information descrambles again for descrambling module is sent to descrambling module again above-mentioned
In, it is necessary first to the Program Map Table data for needing to generate new descrambling information are obtained from program stream, this process is about time-consuming
400ms；Then after new descrambling information is sent to descrambling module, descrambling module resets working condition, until descrambling module can be defeated
Data after correctly descrambling again out, this process are about 1 second time-consuming；Therefore, the process consumption of entire switching track is not only resulted in
When 1.4 seconds, and before descrambling is completed in smart television display can of short duration appearances flower shield, Caton phenomenon.
Summary of the invention
The embodiment of the present invention provides the playback method and device of a kind of scrambled program, can greatly reduce switching track mistake
The time-consuming of journey avoids of short duration appearance flower screen, Caton phenomenon on display screen.
In a first aspect, providing a kind of playback method of scrambled program, which comprises
When starting to play scrambled program, the audio, video data of the scrambled program is sent to descrambling module and for descrambling
State the descrambling information of audio, video data；Wherein, the descrambling information includes the corresponding video PID of video data, audio data pair
The multiple Audio PIDs answered；
After the audio, video data for receiving the descrambled program that the descrambling module returns, according to the corresponding view of the video PID
Frequency evidence audio data corresponding with any one chosen Audio PID, plays the descrambled program.
Second aspect, provides a kind of playing device of scrambled program, and described device includes:
Sending module, for sending the audio, video data of the scrambled program to descrambling module when starting to play scrambled program
And the descrambling information for descrambling the audio, video data；Wherein, the descrambling information includes the corresponding video of video data
The corresponding multiple Audio PIDs of PID, audio data；
Playing module, for after the audio, video data for receiving the descrambled program that the descrambling module returns, according to the view
The corresponding video data of frequency PID audio data corresponding with any one chosen Audio PID, plays the descrambled program.
In above-mentioned example, when starting to play scrambled program, just to descrambling module transmission descrambling information, in the descrambling information
What the corresponding video PID of video data and the scrambled program including the scrambled program included indicates respectively the more of multiple tracks
The corresponding multiple Audio PIDs of a audio data；Then descrambling module is by video data and the multiple sounds for indicating respectively multiple tracks
Frequency evidence is all descrambled.Therefore, smart television can find video data and user's choosing in the audio, video data descrambled
The audio data of any one fixed track directly plays the program.In this way, user needs to switch track during playing program
When, without new descrambling information is sent to descrambling module again for descrambling module again descrambling data, cut to greatly reduce
The time-consuming for changing track process avoids of short duration appearance flower screen, Caton phenomenon on display screen.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the invention
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of track menu schematic diagram；
Fig. 2 is the schematic diagram of smart television；
Fig. 3 is a kind of flow chart of the playback method of scrambled program；
Fig. 4 is the flow chart of the playback method of another scrambled program；
Fig. 5 is a kind of schematic diagram of the playing device of scrambled program.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 2 is a kind of schematic diagram of smart television.As shown in Fig. 2, the tuner of smart television receives broadcast singal
(Transport Stream, also referred to as TS stream) is simultaneously tuned broadcast singal, and then demodulator flows into the TS after tuning
Row demodulation, then demultiplexer by the audio data for including in the TS stream after demodulation, video data and is different from audio/view
The data portion of frequency part is separated, and then descrambling module descrambles aforementioned scrambled TS stream according to descrambling information, it
Decoder is decoded the TS stream of descrambling that descrambling module returns afterwards, so that display shows decoded video data, raises
Audio data after sound device broadcast decoder.
Wherein, the data portion that audio/video part is different from above-mentioned TS stream is rebuild to constitute program information table.Section
Mesh information table includes Program Association Table (Program Association Table, PAT), Program Map Table (Program Map
Table, PMT), network information table (Network Information Table, NIT), CAT Conditional Access Table (Conditional
Access Table, CAT), the information of the broadcast programs such as Event Information Table (Event Information Table, EIT).On
Descrambling information is stated to need to obtain and generate from PMT.
It should be noted that following is a brief introduction of the lower scrambling to TS stream and descrambling procedure:
It is as follows to the scrambling processes of TS stream: TS stream encryption being transmitted using scrambled control word (Control Word, CW).Here with
Control word transmission is relevant, and mainly there are two data informations: Entitlement Control Message (Entitlement Control Message,
) and Entitlement Management Message (Entitlment Management Message, EMM) ECM.Wherein, it transmits in ECM by business
CW and programming source, time, classifying content and program price constant pitch after key (Service Key, SK) encryption
Mesh information；Transmission is encrypted by individual subscriber distribution key (Personal Distribute Key, PDK) in EMM
The SK of processing and address and authorized user message, the program that can be seen such as user or period, the license fee etc. that user pays.
Individual subscriber distribution key (PDK) is stored in the smart card of user.
To TS stream descrambling procedure by descrambling module (condition access module, CAM, also referred to as condition receiving
Block) it completes: smart television obtains the PID of ECM from the pmt table in the program information table of above-mentioned reconstruction, obtains from CAT table
The PID of EMM；Then ECM and EMM Data Concurrent is filtered out from TS stream to send into smart card.Smart card reads user first
People distributes key (PDK)；Then use PDK that EMM is decrypted to obtain SK；Then ECM is decrypted using SK
Processing is to obtain CW and CW is sent to descrambler；Descrambler can be descrambled scrambling TS stream using CW.
Here, it is transmitted in CAT table due to the PID of EMM, and CAT table has fixed PID, does not play frequency with smart television
Road changes and changes, so can be obtained automatically by CAM.The PID of ECM is transmitted in pmt table, is changed with smart television broadcasting channel
And change, it is obtained in real time so generating descrambling information every time and requiring smart television.Therefore smart television needs will be out of pmt table
The PID and other information of the ECM of acquisition is combined into descrambling information and is sent to CAM, so that CAM descrambles scrambling TS stream.
In the present embodiment, in the related technology for solution: playing the consumption occurred during scrambled program when switching track
When more long and short temporary flower screen and the problems such as Caton, using when starting broadcasting scrambled program, just recognizing the scrambled program includes
Multiple tracks obtain the Audio PID of the corresponding audio data of each track, then directly by multiple Audio PIDs and other information
It is combined into descrambling information and is sent to CAM, so that audio, video data of the CAM to the scrambled program is once descrambled.To cut
It, can be in the audio data for having descrambled the corresponding track of selection in audio, video data that CAM is returned, to greatly reduce when changing track
The time-consuming for switching track process avoids of short duration appearance flower screen, Caton phenomenon on display screen.
Fig. 3 is a kind of flow chart of the playback method of scrambled program.As shown in figure 3, this method comprises:
Step 11: smart television starts to play scrambled program.
Step 12: sending the audio, video data of scrambled program to CAM and the descrambling information for descrambling audio, video data；
Wherein, which includes the corresponding video PID of video data, the corresponding multiple Audio PIDs of audio data.
Step 13: after the audio, video data for receiving the descrambled program that CAM is returned, according to the corresponding video of video PID
Data audio data corresponding with any one chosen Audio PID, plays descrambled program.
Therefore, smart television can find video data and any that user selectes in the audio, video data descrambled
The audio data of a track directly plays the program, thus reduce switching track process time-consuming, avoid on display screen it is of short duration go out
Now flower screen, Caton phenomenon.
Fig. 4 is the flow chart of the playback method of another scrambled program.As shown in figure 4, this method comprises:
Step 21: smart television starts to play scrambled program.
Step 22: judging whether the scrambled program is MS12 type programs；If so, thening follow the steps 23；Otherwise, step is executed
Rapid 26.
Step 23: judging the audio data of the scrambled program whether only comprising an Audio PID；If so, thening follow the steps
24；It is no to then follow the steps 25.
Here, MS12 type programs refer to the program for being provided with auxiliary sound track function.So-called auxiliary sound track, refers to usual
Except the audio data of video data cooperation, then additional audio data is provided, is best understood from video data convenient for user
Hold.
Such as: a kind of typical auxiliary sound track is exactly the description to video content, such as figure action, scene arrangement etc..It is logical
A normal keynote rail and an auxiliary sound track pairing use, and use identical language.It may include in MS12 type programs
Multiple keynote rails and multiple auxiliary sound tracks include multilingual；User can voluntarily select the keynote rail of different language with it is auxiliary
Track is helped, keynote rail is individually played, individually plays auxiliary sound track.In this way, switching track becomes when playing MS12 type programs most
Common function, so user experience when switching track is very important.
Specifically, can judge whether the scrambled program is MS12 type programs from pmt table.Such as: it is assisted in DVB standard
In view, the additional information of all programs all in pmt table descriptor_tag be 0x7F Extension_
In descriptor description.The period of the day from 11 p.m. to 1 a.m is described in parsing Extension_desc, in its data area, carries other descriptions
Son.The audio_preselection_descriptor that descriptor_tag_extension is 0x19 if it exists is described
Son then illustrates that keynote rail that this program includes and auxiliary sound track have identical Audio PID, as the MS12 type programs of list PID；
The Supplementary audio descriptor that descriptor_tag_extension is 0x06 if it exists describes son,
Then illustrate that keynote rail that this program includes and auxiliary sound track have different Audio PIDs, the MS12 type programs of as more PID.
It should be noted that in the absence of the two description, it is also necessary to parse ISO_639_language_
The further judgement of descriptor description；If it is not indicated as MS12 type programs, judge that the scrambled program is not MS12
Type programs.
Step 24: obtaining an Audio PID.
Specifically, if judging, the scrambled program for the MS12 type programs of list PID, shows the audio number of the scrambled program
It include auxiliary sound track in, and keynote rail and auxiliary sound track have identical Audio PID, then directly acquiring audio from pmt table
The corresponding Audio PID of data.
Step 25: obtaining the Audio PID for the keynote rail that the audio data of the scrambled program includes, the audio of auxiliary sound track
PID。
Specifically, if judging, the scrambled program for the MS12 type programs of more PID, shows the audio number of the scrambled program
It include auxiliary sound track in, and keynote rail and auxiliary sound track have different Audio PIDs, then obtaining keynote respectively from pmt table
The Audio PID of the corresponding audio data of Audio PID, auxiliary sound track of the corresponding audio data of rail.
Step 26: obtaining the Audio PID for multiple tracks that the audio data of the scrambled program includes.
Specifically, showing in the audio data of the scrambled program if judging the scrambled program not is MS12 type programs
Not comprising auxiliary sound track, then from pmt table obtain it includes the corresponding audio data of multiple tracks Audio PID, here
Multiple tracks refer to that there is different audio formats or different language, such as Chinese track and English track.
Step 27: obtaining the corresponding video PID of video data of the scrambled program.
Meanwhile the corresponding video PID of video data of program is obtained from pmt table.
Step 28: the Audio PID and other letters of the video PID, step 24/25/26 acquisition that are obtained according to step 27
Breath generates descrambling information.
Step 29: the descrambling information being sent to CAM, so that audio, video data of the CAM to the scrambled program descrambles.
Specifically, by the corresponding video PID of the video data of the scrambled program, the corresponding all Audio PIDs of audio data
And other information combination, and then descrambling information is generated, and the descrambling information is sent to CAM.Meanwhile by the scrambled program pair
The audio, video data answered is also sent to CAM.Then after CAM parses the descrambling information, audio-video number corresponding to the scrambled program
It is returned according to being descrambled, and by the audio, video data after descrambling.
Here, other information may include: program number, the channel number of broadcasting；CA system ID, shows to work as
The CA system that preceding TS stream uses；ECM PID；Currently playing video ES information, such as video format；Currently playing
Audio ES information, such as audio format；Etc..
Step 210: any one track selected according to user plays the scrambled program.
Specifically, in all audio, video datas descrambled, according to the default track that smart television is arranged, such as Chinese sound
Rail, the corresponding audio data of selection default track and video data, to play the scrambled program using default track.
Further, when smart television receives the track switching command for needing to switch to target track of user's sending
When, English track such as is switched to from Chinese track or switches to auxiliary sound track from keynote rail, it can be in all sounds descrambled
The corresponding audio data of target track and video data are directly found in video data, so that playing using target track should add
Disturb program.
In this way, needing to generate new descrambling information (as newly selected without obtaining from TS stream again compared with the relevant technologies
Audio PID, the ECM PID of target track) PMT data, and, it is not necessary that new descrambling information is sent to descrambling module again,
Working condition is reset for descrambling module to export the data after descrambling again, so reducing switching track time 1.4s, Neng Goushi
Track, about 10ms are switched fast in existing playing process；Meanwhile without the heavy descrambling data to be received such as smart television display
Time, institute is to avoid appearance of short duration on display screen flower screen, Caton phenomenon.
Based on same technical concept, Fig. 5 is a kind of schematic diagram of the playing device of scrambled program.As shown in figure 5, the device
Include:
Sending module 31, for sending the audio, video data and use of the scrambled program to CAM when starting to play scrambled program
In the descrambling information for descrambling the audio, video data；Wherein, which includes the corresponding video PID of video data, audio number
According to corresponding multiple Audio PIDs；
Playing module 32, for receive CAM return descrambled program audio, video data after, it is corresponding according to video PID
Video data audio data corresponding with any one chosen Audio PID, plays descrambled program.
Optionally, the device further include:
Receiving module 33, for receiving the track switching command based on descrambled program of user's transmission；The track switching command
Instruction switches to the corresponding target track of other Audio PIDs from the chosen corresponding current audio track of any Audio PID；
Correspondingly, playing module 32, is also used in the audio, video data of descrambled program, according to the corresponding video of video PID
The corresponding audio data of the Audio PID of data and target track plays descrambled program using target track.
Optionally, the device further include:
Judgment module 34, for when starting to play scrambled program, judging whether the audio data of the scrambled program includes auxiliary
Track；If so, obtaining the Audio PID of the Audio PID for the keynote rail that audio data includes, auxiliary sound track；Otherwise, it obtains respectively
The Audio PID of the corresponding multiple tracks of audio data.
The specific implementation of device side can refer to above method side, and which is not described herein again.
It should be understood that in various embodiments of the present invention, magnitude of the sequence numbers of the above procedures are not meant to execute suitable
Sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention
Process constitutes any restriction.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (9)
1. a kind of playback method of scrambled program, which is characterized in that the described method includes:
When starting to play scrambled program, the audio, video data of the scrambled program is sent to descrambling module and for descrambling
State the descrambling information of audio, video data；Wherein, the descrambling information includes the corresponding video PID of video data, audio data pair
The multiple Audio PIDs answered；
After the audio, video data for receiving the descrambled program that the descrambling module returns, according to the corresponding view of the video PID
Frequency evidence audio data corresponding with any one chosen Audio PID, plays the descrambled program.
2. method described in claim 1, which is characterized in that the method also includes:
Receive the track switching command based on the descrambled program that user sends；The track switching command is indicated from selected
The fixed corresponding current audio track of any Audio PID switches to the corresponding target track of other Audio PIDs；
In the audio, video data of the descrambled program, according to the corresponding video data of the video PID and the target sound
The corresponding audio data of the Audio PID of rail plays the descrambled program using the target track.
3. method according to claim 2, which is characterized in that described in the sound for sending the scrambled program to descrambling module view
Frequency is accordingly and before the descrambling information for descrambling the audio, video data, further includes:
Whether the audio data for judging the scrambled program includes auxiliary sound track；
If so, obtaining the Audio PID of the Audio PID for the keynote rail that the audio data includes, auxiliary sound track；
Otherwise, the Audio PID of the corresponding multiple tracks of the audio data is obtained respectively.
4. method as claimed in claim 3, which is characterized in that instruction includes description of auxiliary sound track out of Program Map Table
In field, determine whether the audio data of the scrambled program includes auxiliary sound track.
5. method as claimed in claim 3, which is characterized in that the descrambling information further includes the corresponding view of the video data
The audio format of the corresponding multiple tracks of frequency format, the audio data.
6. a kind of playing device of scrambled program, which is characterized in that described device includes:
Sending module, for sending the audio, video data of the scrambled program to descrambling module when starting to play scrambled program
And the descrambling information for descrambling the audio, video data；Wherein, the descrambling information includes the corresponding video of video data
The corresponding multiple Audio PIDs of PID, audio data；
Playing module, for after the audio, video data for receiving the descrambled program that the descrambling module returns, according to the view
The corresponding video data of frequency PID audio data corresponding with any one chosen Audio PID, plays the descrambled program.
7. device as claimed in claim 6, which is characterized in that described device further include:
Receiving module, for receiving the track switching command based on the descrambled program of user's transmission；The track switching
Instruction instruction switches to the corresponding target track of other Audio PIDs from the chosen corresponding current audio track of any Audio PID；
Correspondingly, the playing module, is also used in the audio, video data of the descrambled program, according to the video PID
The corresponding audio data of Audio PID of corresponding video data and the target track, using described in target track broadcasting
Descrambled program.
8. device as claimed in claim 7, which is characterized in that described device further include:
Judgment module, for when starting to play scrambled program, judging whether the audio data of the scrambled program includes auxiliary
Track；If so, obtaining the Audio PID of the Audio PID for the keynote rail that the audio data includes, auxiliary sound track respectively；Otherwise,
The Audio PID of the corresponding multiple tracks of the audio data is obtained respectively.
9. device as claimed in claim 8, which is characterized in that the descrambling information further includes the corresponding view of the video data
The audio format of the corresponding multiple tracks of frequency format, the audio data.
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| CN201811347349.7A CN109195008A (en) | 2018-11-13 | 2018-11-13 | A kind of playback method and device of scrambled program |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111294643A (en) * | 2020-01-21 | 2020-06-16 | 海信视像科技股份有限公司 | Method for displaying audio track language in display device and display device |
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