CN104853240A - Method for realizing STB live channel switch stable playing through slow motion play and rapid play mechanisms - Google Patents
Method for realizing STB live channel switch stable playing through slow motion play and rapid play mechanisms Download PDFInfo
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- CN104853240A CN104853240A CN201510239566.4A CN201510239566A CN104853240A CN 104853240 A CN104853240 A CN 104853240A CN 201510239566 A CN201510239566 A CN 201510239566A CN 104853240 A CN104853240 A CN 104853240A
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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
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
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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 present invention discloses a method for realizing STB live channel switch stable playing through slow motion play and rapid play mechanisms. The channel switch is divided into three stages. The first stage is before the reception of the first complete I frame video data in TS data received through a front end, the second stage is from the reception of the first complete I frame video data in the TS data received through the front end to the completion of audio data and video data synchronization and at that time audio and video are subjected to synchronous playback processing, and the third stage is from the completion of the audio data and video data synchronization to play end, and the TS data is received through the front end. Compared with the prior art, the experience of a client in the channel switch process can be improved, in the process of channel switch, through the mode of the combination of slow motion play and rapid play, the rapid and stable play is achieved.
Description
Technical field
The present invention relates to digital TV field, particularly relate to a kind of by put slowly and the mechanism of putting realizes the live method of cutting platform stable playback of Set Top Box soon.
Background technology
Traditional top box of digital machine, in the process of cutting platform, the mode that program pictures is play has several:
1. play-over: after audio, video data receives, do not need to do audio-visual synchronization, play-over, and in playing process, do audio-visual synchronization work, after completing synchronous working, then play by the mode after synchronous.The shortcoming of this kind of mode is, exists in a period of time of just having started to play, there will be the nonsynchronous situation of audio frequency and video, and the problem such as to pause by frame-skipping card when subsequent synchronisation.The advantage of this kind of mode is, can broadcast picture fast.
2. synchronously play: after audio, video data receives, needed to do audio-visual synchronization before broadcast, after completing synchronous working, then play by the mode after synchronous.The shortcoming of this kind of mode is, before starting to play, needs synchronized audio/video of taking time, makes to cut platform broadcast time elongated.The advantage of this kind of mode is, broadcast picture that can be stable.
Summary of the invention
Object of the present invention is just to provide a kind of the problems referred to above that solve by put slowly and the mechanism of putting realizes the live method of cutting platform stable playback of Set Top Box soon.
To achieve these goals, the technical solution used in the present invention is: a kind ofly will cut platform be divided into following three phases by put slowly and the mechanism of putting realizes the live method of cutting platform stable playback of Set Top Box soon,
First stage Set Top Box by front end receiver to TS data, before receiving in TS data first complete I-frame video data, wait-receiving mode TS data;
Second stage Set Top Box to TS data by front end receiver, to be received in TS data first complete I-frame video data and starts to before completing voice data and video data synchronization work; When completing first complete I-frame video and receiving, receive abundant voice data and synchrodata for synchronous working, now audio frequency, video have been done synchronous playback process;
Phase III Set Top Box to TS data, and completes voice data and video data synchronization work starts until play end by front end receiver.
As preferably, in described second stage, the working method of synchronous playback process is as follows:
1st step: in time receiving first I frame data, just plays the real-time asynchronous voice data obtained and video data at once;
2nd step: while the 1st step is carried out, does synchrodata to voice data and video data and calculates, and the difference of fiducial time inside clear and definite audio frequency, video and synchronizing information, preparation starts to do sound, audio video synchronization process;
3rd step: after the 2nd step completes, according to the situation of lock in time inside sound, video and synchronizing information, respectively with X speed playing audio-fequency data and Y speed playing video data, wherein X, Y are the numerical value of 0 ~ 4, make video data synchronous with voice data;
4th step: complete synchronously, continues synchronously to play.
As preferably, in the step 3 of described second stage, when video is faster than fiducial time, then Y<1; When video is slower than fiducial time, then Y>1; In like manner, when audio frequency is faster than fiducial time, then X<1; When audio frequency is slower than fiducial time, then X>1.
Compared with prior art, the invention has the advantages that: client can be improved and cutting the experience in platform process, allow user cut in platform process, by putting slowly and putting the mode combined soon, broadcasting that can be not only quick but also stable.
Embodiment
The invention will be further described below.
Embodiment: a kind of by put slowly and the mechanism of putting realizes the live method of cutting platform stable playback of Set Top Box soon, platform will be cut and be divided into following three phases, first stage Set Top Box by front end receiver to TS data, before receiving in TS data first complete I-frame video data, wait-receiving mode TS data;
Second stage Set Top Box to TS data by front end receiver, to be received in TS data first complete I-frame video data and starts to before completing voice data and video data synchronization work;
Inside TS data, the three large necessary data that playing out a program needs are: voice data, video data, synchrodata, this three is indispensable.In three data, the video data volume is again maximum, accounts for whole TS data over half; And the data volume of voice data is less than 10% of video data; The data volume of synchrodata is then less.When completing first complete I-frame video and receiving, abundant voice data and synchrodata are received for synchronous working.
Synchronous working general principles obtains the synchronizing information in synchrodata, and audio frequency and video are done synchronous playback process.This process needs to spend the regular hour, now audio frequency, video done synchronous playback process.
Working method is as follows:
1st step: in this time period, in time receiving first I frame data, just plays the real-time asynchronous voice data obtained and video data at once;
2nd step: while the 1st step is carried out, does synchrodata to voice data and video data and calculates, and the difference of fiducial time inside clear and definite audio frequency, video and synchronizing information, preparation starts to do sound, audio video synchronization process;
3rd step: after the 2nd step completes, according to the situation of lock in time inside sound, video and synchronizing information, respectively with X speed playing audio-fequency data and Y speed playing video data, wherein X, Y are the numerical value of 0 ~ 4, make video data synchronous with voice data; In the step 3 of described second stage, when video is faster than fiducial time, then Y<1; When video is slower than fiducial time, then Y>1; In like manner, when audio frequency is faster than fiducial time, then X<1; When audio frequency is slower than fiducial time, then X>1;
4th step: complete synchronously, continues synchronously to play.
Phase III Set Top Box to TS data, and completes voice data and video data synchronization work starts until play end by front end receiver.
Above to provided by the present invention by put slowly and the mechanism of putting realizes the live method of cutting platform stable playback of Set Top Box and carried out exhaustive presentation soon, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, to change of the present invention and improve will be possible, and design and the scope of accessory claim defined can not be exceeded, in sum, this description should not be construed as limitation of the present invention.
Claims (3)
1., by put slowly and the mechanism of putting realizes the live method of cutting platform stable playback of Set Top Box soon, it is characterized in that: platform will be cut and be divided into following three phases,
First stage Set Top Box by front end receiver to TS data, before receiving in TS data first complete I-frame video data, wait-receiving mode TS data;
Second stage Set Top Box to TS data by front end receiver, to be received in TS data first complete I-frame video data and starts to before completing voice data and video data synchronization work; When completing first complete I-frame video and receiving, receive abundant voice data and synchrodata for synchronous working, now audio frequency, video have been done synchronous playback process;
Phase III Set Top Box to TS data, and completes voice data and video data synchronization work starts until play end by front end receiver.
2. according to claim 1 by put slowly and the mechanism of putting realizes the live method of cutting platform stable playback of Set Top Box soon, it is characterized in that: in described second stage, the working method of synchronous playback process is as follows:
1st step: in time receiving first I frame data, just plays the real-time asynchronous voice data obtained and video data at once;
2nd step: while the 1st step is carried out, does synchrodata to voice data and video data and calculates, and the difference of fiducial time inside clear and definite audio frequency, video and synchronizing information, preparation starts to do sound, audio video synchronization process;
3rd step: after the 2nd step completes, according to the situation of lock in time inside sound, video and synchronizing information, respectively with X speed playing audio-fequency data and Y speed playing video data, wherein X, Y are the numerical value of 0 ~ 4, make video data synchronous with voice data;
4th step: complete synchronously, continues synchronously to play.
3. according to claim 1ly to it is characterized in that: in the step 3 of described second stage by put slowly and the mechanism of putting realizes the live method of cutting platform stable playback of Set Top Box soon, when video is faster than fiducial time, then Y<1; When video is slower than fiducial time, then Y>1; In like manner, when audio frequency is faster than fiducial time, then X<1; When audio frequency is slower than fiducial time, then X>1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510239566.4A CN104853240A (en) | 2015-05-12 | 2015-05-12 | Method for realizing STB live channel switch stable playing through slow motion play and rapid play mechanisms |
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| CN201510239566.4A CN104853240A (en) | 2015-05-12 | 2015-05-12 | Method for realizing STB live channel switch stable playing through slow motion play and rapid play mechanisms |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101536497A (en) * | 2006-11-07 | 2009-09-16 | 汤姆森许可贸易公司 | Method for reducing channel change times and synchronizing audio/video content during channel change |
| CN101854533A (en) * | 2010-06-10 | 2010-10-06 | 华为技术有限公司 | Frequency channel switching method, device and system |
| CN101980541A (en) * | 2010-11-23 | 2011-02-23 | 华亚微电子（上海）有限公司 | Digital television receiving device and channel-switching method thereof |
| CN103188565A (en) * | 2011-12-30 | 2013-07-03 | 北京朝歌数码科技股份有限公司 | Channel switching system and channel switching method |
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2015
- 2015-05-12 CN CN201510239566.4A patent/CN104853240A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101536497A (en) * | 2006-11-07 | 2009-09-16 | 汤姆森许可贸易公司 | Method for reducing channel change times and synchronizing audio/video content during channel change |
| CN101854533A (en) * | 2010-06-10 | 2010-10-06 | 华为技术有限公司 | Frequency channel switching method, device and system |
| CN101980541A (en) * | 2010-11-23 | 2011-02-23 | 华亚微电子（上海）有限公司 | Digital television receiving device and channel-switching method thereof |
| CN103188565A (en) * | 2011-12-30 | 2013-07-03 | 北京朝歌数码科技股份有限公司 | Channel switching system and channel switching method |
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Application publication date: 20150819 |