CN102724560A - Method and device for audio data display - Google Patents
Method and device for audio data display Download PDFInfo
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- CN102724560A CN102724560A CN2012102175637A CN201210217563A CN102724560A CN 102724560 A CN102724560 A CN 102724560A CN 2012102175637 A CN2012102175637 A CN 2012102175637A CN 201210217563 A CN201210217563 A CN 201210217563A CN 102724560 A CN102724560 A CN 102724560A
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- 238000000926 separation method Methods 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000012856 packing Methods 0.000 claims description 12
- 238000013144 data compression Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 description 5
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Abstract
The invention discloses a method for audio data display. The method includes: generating a time code corresponding to an audio data frame to be displayed; dividing the audio data frame to be displayed into a plurality of audio data sub frames; generating audio data sub frames containing time codes; coding and transmitting all the audio data sub frames containing the time codes; decoding all the received audio data sub frames containing the time codes and performing data separation for the time codes and the plurality of audio data sub frames respectively; and displaying all the divided audio data sub frames according to the separated time codes. In addition, the invention discloses a device for audio data display. According to the method and the device, the time code is attached into the audio data frame, and the time code serving as time synchronization information and audio data are together coded and transmitted. The problem that images displayed by all the audio data sub frames are not from the same original frame is solved, and image tearing is avoided.
Description
Technical field
The present invention relates to the video display technology field, relate in particular to a kind of video data display packing and a kind of video data display unit.
Background technology
At present, the application of ultrahigh resolution video flowing is more and more general.The ultrahigh resolution video flowing is very high to the codec performance demands, and when video bandwidth was too high, the performance of single codec unit can't satisfy the demands.Therefore, a kind of common way is that the ultrahigh resolution video data frame is split into the less video data subframe of several resolution, utilizes a plurality of codec unit cooperations to solve this contradiction.But because the information of each video data frame is different, the used time of therefore encoding is also different to the greatest extent.And slow codec unit prolongation of effect at that time should also can slowly be accumulated, and can't guarantee that therefore the different coding device carries out synchronous coding to the video data that gets into simultaneously.Also promptly, under a plurality of codec unit situation, can't be as under single codec unit situation, adopting the mode of beating timestamp to avoid out of order, packet loss, problems such as time-delay.If because beat timestamp at the coding transmitting terminal according to common practices; Because the efficient of each codec is different; Even each encoder gets access to video data frame in the same time, can't guarantee that also each encoder is the same to the temporal information of same video timestamp that Frame is beaten.This will cause last images displayed generation to be torn.
Summary of the invention
For solving the problem of above-mentioned existence, the invention provides a kind of video data display packing and a kind of video data display unit.
A kind of video data display packing may further comprise the steps:
Generate and the corresponding timing code of video data frame to be shown;
Video data frame to be shown is split as the plurality of video data burst;
Said timing code is carried out data with said plurality of video data burst respectively merge, generate the video data subframe that contains timing code;
Video data sends end each video data subframe that contains timing code is encoded, and is sent to the video data receiving terminal through the video Data Transmission network;
Said video data receiving terminal is decoded to the video data subframe that each that receives contains timing code, and said timing code is carried out data separating with said plurality of video data burst respectively;
According to isolated timing code, each video data subframe that splits is shown.
Compare with general technology, video data display packing of the present invention is enclosed a timing code in video data frame, and this timing code is encoded with video data as time synchronization information and sends.The present invention can effectively guarantee video data between a plurality of codec unit synchronously, having overcome each video data subframe institute images displayed is not from this problem of same primitive frame, thereby has avoided producing the situation of picture break-up.
A kind of video data display unit comprises: timing code generation module, video data frame split module, data merge module, coding sending module, decoding separation module and display module;
Said timing code generation module is used to generate and the corresponding timing code of video data frame to be shown;
Said video data frame splits module and is used for video data frame to be shown is split as the plurality of video data burst;
Said data merge module and are used for said timing code is carried out the data merging with said plurality of video data burst respectively, generate the video data subframe that contains timing code;
Said coding sending module is used for each is contained the video data subframe of timing code encodes, and is sent to the video data receiving terminal through the video Data Transmission network;
Each video data subframe that contains timing code that said decoding separation module is used for said video data receiving terminal is received is decoded, and said timing code is carried out data separating with said plurality of video data burst respectively;
Said display module is used for according to isolated timing code, and each video data subframe that splits is shown.
Compare with general technology, video data display unit of the present invention is enclosed a timing code in video data frame, and this timing code is encoded with video data as time synchronization information and sends.The present invention can effectively guarantee video data between a plurality of codec unit synchronously, having overcome each video data subframe institute images displayed is not from this problem of same primitive frame, thereby has avoided producing the situation of picture break-up.
Description of drawings
Fig. 1 is the schematic flow diagram of video data display packing of the present invention;
Fig. 2 is the structural representation of video data display unit of the present invention.
Embodiment
Be further set forth the present invention technological means of being taked and the effect that obtains,,, know and complete description technical scheme of the present invention below in conjunction with accompanying drawing and preferred embodiment.
See also Fig. 1, be the schematic flow diagram of video data display packing of the present invention.Video data display packing of the present invention may further comprise the steps:
S101 generates and the corresponding timing code of video data frame to be shown;
Video server is all enclosed a timing code to each frame of the video flowing of input, and this timing code can be decided to be 8bit.Produce a timing code for every frame video, this timing code is dull to be increased, and value 0-255 unrolls after exceeding.
S102 is split as the plurality of video data burst with video data frame to be shown;
Preferably, can adopt the mode of five equilibrium that video data frame to be shown is split as the plurality of video data burst.
Suppose the big or small 3840*2160 of the every frame of original video stream, can every frame be divided into 4 less frames, then the resolution of each less frame is 1920*1080.
S103 carries out data with said plurality of video data burst respectively with said timing code and merges, and generates the video data subframe that contains timing code;
Video server can all enclose portion for each frame 4 parts of the reproduction time codes of above-mentioned generation.This 8bit timing code is encoded, describe with the 8x4 pixel size by every, the resolution of four less video data frames behind the joining day sign indicating number becomes 1920*1084.
The S104 video data sends end each video data subframe that contains timing code is encoded, and is sent to the video data receiving terminal through the video Data Transmission network;
As one of them embodiment, after video data transmission end can be encoded to each video data subframe that contains timing code, be the IP packet with the video data compression behind the coding, be sent to the video data receiving terminal through IP network.
Video server is issued encoder with 4 less video data subframes and is carried out compressed encoding.Coding back data break into the IP bag through network output.
The said video data receiving terminal of S105 is decoded to the video data subframe that each that receives contains timing code, and said timing code is carried out data separating with said plurality of video data burst respectively;
Each decoder end can be decoded into the yuv video data to the IP bag, separates yuv data and timing code through the separated in synchronization module then.Because the image information that timing code is changed is incorporated in the location aware in the true picture information, can split into two of 1920*1080 and 1920*4 to image information, according to the transition form of timing code, easily timing code is recovered out to image information.
S106 shows each video data subframe that splits according to isolated timing code.
Each decoder end sends the frame of receiving according to the trigger command that video server sent.After receiving terminal was received the synchronous triggering order of server transmission, the identical frame in synchronous triggering source that searching and server send in buffer queue if there be not the frame identical with the triggering source, then showed nearest frame output confession.
For example, can show 4 road YUV real time datas of receiving respectively through the splicer unit.
Be to be fit to the application such as long Distance Transmission of video data, more popular way is carry out IPization to live video stream now, and the form of wrapping through IP is in transmission over networks.Because receive the intrinsic influence of network, the IP bag that therefore obtains at receiving terminal possibly occur out of order, packet loss, time-delay or the like problem.Show that can occur card on the image pauses phenomenons such as flicker.Way commonly used is to utilize timestamp to carry out synchronously.But this implementation is not considered the difference between each encoder.What timestamp was described is the time that coding is accomplished, because each encoder can not be accomplished the identical time finish dealing with (reasons such as CPU operating frequency and task switching) to the coding task.Therefore for the raw video signal of same time input, the time of output also is differentiated.When this difference is accumulated to a certain degree, will surpass the time of a frame, cause decoding end to judge that according to timestamp image is not corresponding, thus occur picture tear and irrecoverable.
The basic reason that causes picture break-up is that each little frame images displayed is not from same primitive frame.Through the invention solves original image through after a series of processing can't with the corresponding problem of timestamp, the method for the timestamp that therefore can guarantee to use always also can be applicable to the application to the original image associated treatment.
As one of them embodiment, be example with 3840*2160P30, the at first every frame of video server all produces a timestamp, is divided into 4 1080P30 streams to this video flowing then, all encloses this timestamp information in every frame header of 4 code streams then.
Then these four less live video streams are passed to 4 encoders respectively, 4 encoders carry out compressed encoding to each live video stream and break into the IP bag then and pass to switch.
Decoder end obtains corresponding IP data from switch, and the decoding back obtains the image of 4 road 1084P30, separates view data and synchrodata then, obtains the timestamp of every frame.
Compare according to the timestamp of every frame and the benchmark of server transmission, select corresponding frame to issue 4 unit of combination.
4 road signals that 4 unit of combination will be received show, because combination physically is being stitched together, therefore are the original image of the complete 3840*2160 size of a pair from display effect.
Compare with general technology, video data display packing of the present invention is enclosed a timing code in video data frame, and this timing code is encoded with video data as time synchronization information and sends.The present invention can effectively guarantee video data between a plurality of codec unit synchronously, having overcome each video data subframe institute images displayed is not from this problem of same primitive frame, thereby has avoided producing the situation of picture break-up.
See also Fig. 2, be the structural representation of video data display unit of the present invention.Video data display unit of the present invention comprises: timing code generation module 201, video data frame split module 202, data merge module 203, coding sending module 204, decoding separation module 205 and display module 206;
Said timing code generation module 201 is used to generate and the corresponding timing code of video data frame to be shown;
Video server is all enclosed a timing code to each frame of the video flowing of input, and this timing code can be decided to be 8bit.Produce a timing code for every frame video, this timing code is dull to be increased, and value 0-255 unrolls after exceeding.
Said video data frame splits module 202 and is used for video data frame to be shown is split as the plurality of video data burst;
As one of them embodiment, said video data frame splits module 202 and can be used for adopting the mode of five equilibrium that video data frame to be shown is split as the plurality of video data burst.
Said data merge module 203 and are used for said timing code is carried out the data merging with said plurality of video data burst respectively, generate the video data subframe that contains timing code;
For example, video server can all enclose portion for each frame 4 parts of the reproduction time codes of above-mentioned generation.This 8bit timing code is encoded, describe with the 8x4 pixel size by every, the resolution of four less video data frames behind the joining day sign indicating number becomes 1920*1084.
Said coding sending module 204 is used for each is contained the video data subframe of timing code encodes, and is sent to the video data receiving terminal through the video Data Transmission network;
As one of them embodiment, after said coding sending module 204 can be used for each video data subframe that contains timing code encoded, be the IP packet with the video data compression behind the coding, be sent to the video data receiving terminal through IP network.
Each video data subframe that contains timing code that said decoding separation module 205 is used for said video data receiving terminal is received is decoded, and said timing code is carried out data separating with said plurality of video data burst respectively;
Each decoder end can be decoded into the yuv video data to the IP bag, separates yuv data and timing code through the separated in synchronization module then.Because the image information that timing code is changed is incorporated in the location aware in the true picture information, can split into two of 1920*1080 and 1920*4 to image information, according to the transition form of timing code, easily timing code is recovered out to image information.
Said display module 206 is used for according to isolated timing code, and each video data subframe that splits is shown.
Each decoder end sends the frame of receiving according to the trigger command that video server sent.After receiving terminal was received the synchronous triggering order of server transmission, the identical frame in synchronous triggering source that searching and server send in buffer queue if there be not the frame identical with the triggering source, then showed nearest frame output confession.
For example, can show 4 road YUV real time datas of receiving respectively through the splicer unit.
Compare with general technology, video data display unit of the present invention is enclosed a timing code in video data frame, and this timing code is encoded with video data as time synchronization information and sends.The present invention can effectively guarantee video data between a plurality of codec unit synchronously, having overcome each video data subframe institute images displayed is not from this problem of same primitive frame, thereby has avoided producing the situation of picture break-up.
The above embodiment has only expressed several kinds of execution modes of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with accompanying claims.
Claims (6)
1. a video data display packing is characterized in that, may further comprise the steps:
Generate and the corresponding timing code of video data frame to be shown;
Video data frame to be shown is split as the plurality of video data burst;
Said timing code is carried out data with said plurality of video data burst respectively merge, generate the video data subframe that contains timing code;
Video data sends end each video data subframe that contains timing code is encoded, and is sent to the video data receiving terminal through the video Data Transmission network;
Said video data receiving terminal is decoded to the video data subframe that each that receives contains timing code, and said timing code is carried out data separating with said plurality of video data burst respectively;
According to isolated timing code, each video data subframe that splits is shown.
2. video data display packing according to claim 1 is characterized in that, adopts the mode of five equilibrium that video data frame to be shown is split as the plurality of video data burst.
3. video data display packing according to claim 1; It is characterized in that; After video data transmission end is encoded to each video data subframe that contains timing code, be the IP packet, be sent to the video data receiving terminal through IP network with the video data compression behind the coding.
4. a video data display unit is characterized in that, comprising: timing code generation module, video data frame split module, data merge module, coding sending module, decoding separation module and display module;
Said timing code generation module is used to generate and the corresponding timing code of video data frame to be shown;
Said video data frame splits module and is used for video data frame to be shown is split as the plurality of video data burst;
Said data merge module and are used for said timing code is carried out the data merging with said plurality of video data burst respectively, generate the video data subframe that contains timing code;
Said coding sending module is used for each is contained the video data subframe of timing code encodes, and is sent to the video data receiving terminal through the video Data Transmission network;
Each video data subframe that contains timing code that said decoding separation module is used for said video data receiving terminal is received is decoded, and said timing code is carried out data separating with said plurality of video data burst respectively;
Said display module is used for according to isolated timing code, and each video data subframe that splits is shown.
5. video data display unit according to claim 4 is characterized in that, said video data frame splits module and is used to adopt the mode of five equilibrium that video data frame to be shown is split as the plurality of video data burst.
6. video data display unit according to claim 4; It is characterized in that; After said coding sending module is used for each video data subframe that contains timing code encoded, be the IP packet, be sent to the video data receiving terminal through IP network with the video data compression behind the coding.
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| CN114079706A (en) * | 2020-08-18 | 2022-02-22 | 京东方科技集团股份有限公司 | Signal processing device, audio and video display device and processing method |
| CN113068070A (en) * | 2021-03-18 | 2021-07-02 | 京东方科技集团股份有限公司 | Time code display system, method, display device, storage medium, and electronic device |
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