CN101695134B - The terminal of a kind of improving play performance of terminal in weak signal environment, system and method - Google Patents
The terminal of a kind of improving play performance of terminal in weak signal environment, system and method Download PDFInfo
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Abstract
The invention provides the terminal of a kind of improving play performance of terminal in weak signal environment, system and method, the method includes: network side generates Standard Audiovisual frame and generates the redundancy audio/video frames of correspondence simultaneously, and Standard Audiovisual frame and the redundancy audio/video frames of generation are issued to terminal, after terminal receives Standard Audiovisual frame and redundancy audio/video frames, if Standard Audiovisual frame occurs abnormal, terminal processes also plays corresponding redundancy audio/video frames.Use the present invention so that terminal is when processing high-quality audio frequency and video and running into packet loss or wrong bag, it is possible to use the redundancy audio/video frames that corresponding quality is relatively low, thus eliminates the mosaic in video and the pause in audio frequency.
Description
Technical field
The present invention relates to field of mobile phone, it particularly relates to the terminal of a kind of improving play performance of terminal in weak signal environment, system and method.
Background technology
Mobile TV (CMMB) is a kind of multimedia broadcasting techniques popularized both at home and abroad.By mobile phone TV terminal, user can receive mobile TV signal by mobile phone, watch the TV programme liked whenever and wherever possible.
Due to various reasons, can there is the overlay area of weak signal in mobile TV network.Such as some region of remote districts, signal can not cover well；As on the vehicles of quickly movement, due to Doppler effect, the quality of signal also can be affected；As in tunnel or elevator or some building, signal quality also has decays significantly.
Weak signal can cause the packet loss of mobile TV packet and the rising of Packet Error Ratio.And packet loss and by mistake Bao Zehui directly result in the reduction of broadcast performance, as a large amount of mosaics, audio discontinuity occur, thus cause cannot normally watching mobile TV program.
Summary of the invention
The technical problem to be solved in the present invention is to provide the terminal of a kind of improving play performance of terminal in weak signal environment, system and method, make terminal when processing high-quality audio frequency and video and running into packet loss or wrong bag, the redundancy audio/video frames that the quality of correspondence is relatively low can be used, thus eliminate the mosaic in video and the pause in audio frequency.
In order to solve the problems referred to above, a kind of method that the invention provides improving play performance of terminal in weak signal environment, including: network side generates Standard Audiovisual frame and generates the redundancy audio/video frames of correspondence simultaneously, and the redundancy audio/video frames of generation is issued to terminal, after terminal receives Standard Audiovisual frame and redundancy audio/video frames, if described Standard Audiovisual frame occurs abnormal, described terminal processes also plays corresponding redundancy audio/video frames.
Further, described network side is also the control information that the redundancy audio/video frames generated arranges correspondence, including herein below: the instruction of redundant video section, the instruction of redundancy audio section, redundant video segment length, redundant video stream sum, redundancy audio section length and redundancy audio stream sum.
Further, the control information of described redundancy audio/video frames is added to the expansion area of China Mobile multimedia broadcasting (CMMB) multiplexed sub frame head by network side.
Further, described terminal therefrom obtains the control information of redundancy audio/video frames after receiving CMMB multiplexed frame, if there is redundancy audio/video frames in the instruction of described control information, then resolve and preserve the data of described redundancy audio/video frames, and when Standard Audiovisual frame exists packet loss or decoding error, select the redundancy audio/video frames being consistent relative to reproduction time with described Standard Audiovisual frame be decoded and play.
Further, redundancy audio/video frames is encapsulated in the identical subframe of same multiplexed frame with corresponding Standard Audiovisual frame and transmits by described network side, or redundancy audio/video frames is encapsulated in different multiplexed frames from corresponding Standard Audiovisual frame transmits, or redundancy audio/video frames is encapsulated in the different subframes of same multiplexed frame from corresponding Standard Audiovisual frame transmits.
Further, when described network side generates redundancy audio/video frames, according to network redundancy bandwidth selection compression ratio, it is ensured that the redundancy audio/video frames generated according to described compression ratio is in the range of described network redundancy bandwidth is supported.
The present invention also provides for the system of a kind of improving play performance of terminal in weak signal environment, including network side and terminal；Described network side includes encoder and sending module；Described terminal includes receiver module, parsing module, memory module, decoder module and playing module；
Described encoder generates the redundancy audio/video frames of correspondence while generating Standard Audiovisual frame；
Described sending module is for being issued to terminal by the redundancy audio/video frames of generation；
Described receiver module, for receiving Standard Audiovisual frame and the redundancy audio/video frames that network side generates；
Described parsing module, for Analysis design audio/video frames, and sends the redundancy audio/video frames parsed to memory module；
Described memory module, the redundancy audio/video frames after storing and resolving；
Described decoder module, for the redundancy audio/video frames that the decoding when Standard Audiovisual frame occurs abnormal is corresponding；
Described playing module, the redundancy audio/video frames data after broadcast decoder.
Further, described network side also includes controlling information generating module, arranges the control information of correspondence for the redundancy audio/video frames for generating；
Described control information includes herein below: the instruction of redundant video section, the instruction of redundancy audio section, redundant video segment length, redundant video stream sum, redundancy audio section length and redundancy audio stream are total.
Further, described network side also includes Multiplexing module, for the control information of redundancy audio/video frames is added to the expansion area of China Mobile multimedia broadcasting (CMMB) multiplexed sub frame head.
Further, described Multiplexing module is additionally operable to be encapsulated in the identical subframe of same multiplexed frame redundancy audio/video frames with corresponding Standard Audiovisual frame, or redundancy audio/video frames is encapsulated in different multiplexed frames from corresponding Standard Audiovisual frame, or redundancy audio/video frames is encapsulated in the different subframes of same multiplexed frame from corresponding Standard Audiovisual frame.
Further, when described encoder generates redundancy audio/video frames, it is according to network redundancy bandwidth selection compression ratio, it is ensured that the redundancy audio/video frames generated according to described compression ratio is in the range of described network redundancy bandwidth is supported.
Further, described receiver module therefrom obtains the control information of redundancy audio/video frames after being additionally operable to receive CMMB multiplexed frame, and when the instruction of described control information exists redundancy audio/video frames, notifies that described parsing module resolves described redundancy audio/video frames；
The described redundancy audio/video frames corresponding with Standard Audiovisual frame refers to the redundancy audio/video frames being consistent with described Standard Audiovisual frame relative to reproduction time.
The present invention also provides for the terminal of a kind of improving play performance of terminal in weak signal environment, including receiver module, parsing module, memory module, decoder module and playing module；
Described receiver module, for receiving Standard Audiovisual frame and the redundancy audio/video frames that network side generates；
Described parsing module, for Analysis design audio/video frames, and sends the redundancy audio/video frames parsed to memory module；
Described memory module, the redundancy audio/video frames after storing and resolving；
Described decoder module, for the redundancy audio/video frames that the decoding when Standard Audiovisual frame occurs abnormal is corresponding；
Described playing module, the redundancy audio/video frames data after broadcast decoder.
Further, described receiver module therefrom obtains the control information of redundancy audio/video frames after being additionally operable to receive China Mobile multimedia broadcasting (CMMB) multiplexed frame, and when the instruction of described control information exists redundancy audio/video frames, notify that described parsing module resolves described redundancy audio/video frames；
The described redundancy audio/video frames corresponding with Standard Audiovisual frame refers to the redundancy audio/video frames being consistent with described Standard Audiovisual frame relative to reproduction time.
In sum, there is provided herein the terminal of a kind of improving play performance of terminal in weak signal environment, system and method, with the addition of the audio frequency and video redundancy audio/video frames of lower quality in the broadcast stream, make terminal when processing high-quality audio frequency and video and running into packet loss or wrong bag, the redundancy audio/video frames that the quality of correspondence is relatively low can be used, replace high-quality audio/video frames.As long as it is to say, in the case of corresponding redundancy audio/video frames occurs without packet loss and wrong bag, it becomes possible to eliminate the mosaic in video and the pause in audio frequency.By this technology, the mosaic under weak signal and audio discontinuity can be eliminated with greater probability, thus reach to improve the purpose of mobile phone TV terminal broadcast performance.And the present invention is compared with conventional retransmission mechanism of makeing mistakes, and is more applicable for broadcast channel；Compared with forward error correction, the complexity of terminal software is required lower by the present invention, is therefore easier to realize.
Accompanying drawing explanation
Fig. 1 is present system structural representation；
Fig. 2 is the handling process of inventive network side；
Fig. 3 is the handling process of end side of the present invention；
Fig. 4 is the CMMB multiplexed sub frame schematic diagram that the present invention supports redundancy audio, video data.
Detailed description of the invention
The present embodiment provides the system of a kind of improving play performance of terminal in weak signal environment, as it is shown in figure 1, include network side and terminal；
Network side includes encoder, controls information generating module, Multiplexing module and sending module；
Terminal includes receiver module, parsing module, memory module, decoder module and playing module；
Encoder generates the redundancy audio/video frames of correspondence while generating Standard Audiovisual frame；
The audio/video frames that above-mentioned Standard Audiovisual frame generates when referring to as ensureing normal play quality, normal play quality refers to that play quality is more than or equal to predetermined threshold value, the most i.e. occur without play quality during bad frame, play quality is then the most unacceptable play quality less than above-mentioned threshold value, threshold value herein can be arranged as required to, the invention is not limited in this regard.
Sending module is for being issued to terminal by Standard Audiovisual frame and the redundancy audio/video frames of generation；
Receiver module, for receiving Standard Audiovisual frame and the redundancy audio/video frames that network side generates；
Parsing module, for Analysis design audio/video frames, and sends the redundancy audio/video frames parsed to memory module；
Memory module, the redundancy audio/video frames after storing and resolving；
Decoder module, for the redundancy audio/video frames that the decoding when Standard Audiovisual frame occurs abnormal is corresponding；
Playing module, the redundancy audio/video frames data after broadcast decoder.
Control information generating module, the control information of correspondence is set for the redundancy audio/video frames for generating；
Control information includes herein below: the instruction of redundant video section, the instruction of redundancy audio section, redundant video segment length, redundant video stream sum, redundancy audio section length and redundancy audio stream are total.
Multiplexing module, for adding the expansion area of CMMB multiplexed sub frame head to by the control information of redundancy audio/video frames.
Multiplexing module is additionally operable to be encapsulated in the identical subframe of same multiplexed frame redundancy audio/video frames with corresponding Standard Audiovisual frame, or redundancy audio/video frames is encapsulated in different multiplexed frames from corresponding Standard Audiovisual frame, or redundancy audio/video frames is encapsulated in the different subframes of same multiplexed frame from corresponding Standard Audiovisual frame.
When encoder generates redundancy audio/video frames, it is according to network redundancy bandwidth selection compression ratio, it is ensured that the redundancy audio/video frames generated according to described compression ratio is in the range of network redundancy bandwidth is supported.
Receiver module therefrom obtains the control information of redundancy audio/video frames after being additionally operable to receive CMMB multiplexed frame, and when the instruction of described control information exists redundancy audio/video frames, notifies that described parsing module resolves described redundancy audio/video frames；
The redundancy audio/video frames corresponding with Standard Audiovisual frame refers to the redundancy audio/video frames that the relative reproduction time with Standard Audiovisual frame is consistent.
The present embodiment provides the terminal of a kind of improving play performance of terminal in weak signal environment, including receiver module, parsing module, memory module, decoder module and playing module；
Receiver module, for receiving Standard Audiovisual frame and the redundancy audio/video frames that network side generates；
Parsing module, for Analysis design audio/video frames, and sends the redundancy audio/video frames parsed to memory module；
Memory module, the redundancy audio/video frames after storing and resolving；
Decoder module, for the redundancy audio/video frames that the decoding when Standard Audiovisual frame occurs abnormal is corresponding；
Playing module, the redundancy audio/video frames data after broadcast decoder.
Receiver module therefrom obtains the control information of redundancy audio/video frames after being additionally operable to receive CMMB multiplexed frame, and when the instruction of control information exists redundancy audio/video frames, notice parsing module resolves described redundancy audio/video frames；
The redundancy audio/video frames corresponding with Standard Audiovisual frame refers to the redundancy audio/video frames that the relative reproduction time with Standard Audiovisual frame is consistent.
The present embodiment provides a kind of method of improving play performance of terminal in weak signal environment, network side generates Standard Audiovisual frame and generates the redundancy audio/video frames of correspondence simultaneously, and Standard Audiovisual frame and the redundancy audio/video frames of generation are issued to terminal, after terminal receives audio/video frames, if Standard Audiovisual frame occurs abnormal, terminal processes also plays corresponding redundancy audio/video frames.
It is the handling process of the inventive method network side as shown in Figure 2；
Step 101: the encoder of network side, while generating Standard Audiovisual frame, generates the audio/video frames of corresponding redundancy.
The audio/video frames that above-mentioned Standard Audiovisual frame generates when referring to as ensureing normal play quality, normal play quality refers to that play quality is more than or equal to predetermined threshold value, the most i.e. occur without play quality during bad frame, play quality is then the most unacceptable play quality less than above-mentioned threshold value, threshold value herein can be arranged as required to, the invention is not limited in this regard.The compression ratio of redundancy audio/video frames here is more much higher than Standard Audiovisual frame, and therefore the size of redundancy audio/video frames is more much smaller than Standard Audiovisual frame.
Encoder is according to network redundancy bandwidth selection compression ratio, it is ensured that the redundancy audio/video frames that this compression ratio generates is in the range of network redundancy bandwidth is supported, i.e. this network redundancy bandwidth can transmit this redundancy audio/video frames.Thus reach the compromise between bandwidth and weak signal broadcast performance.When network redundancy bandwidth is abundant, the compression ratio of redundancy audio/video flow can be lower, and high compression rate can be used when network redundancy bandwidth is inadequate to reduce the size of redundancy audio/video flow.Network redundancy bandwidth refers to that encoder generates the remaining network bandwidth after Standard Audiovisual frame.
Encoder can select some key frames to generate redundancy audio/video frames, it is not necessary to needs every frame audio frequency and video are all compressed the corresponding redundancy audio/video frames of generation.
Step 102: network side server is that the redundancy audio/video frames generated arranges corresponding control information, and this control information includes:
Redundant video section indicates: indicated whether redundant video segment length and redundant video stream sum parameter；Can representing with 1bit, as can be, but not limited to indicate with 1 (or 0), representing do not have with 0 (or 1).
Redundancy audio section indicates: indicated whether redundancy audio section length and redundancy audio stream sum parameter；Can representing with 1bit, as can be, but not limited to indicate with 1 (or 0), representing do not have with 0 (or 1).
Redundant video segment length: represent the total length of redundant video section, can represent with 21bit, if video-frequency band a length of 0, represents do not have video-frequency band.
Redundant video stream sum: represent the quantity summation of video flowing in video-frequency band；Can represent with 3bit.
Redundancy audio section length: represent the total length of redundancy audio section, can represent with 21bit, really audio section a length of 0, represents do not have audio section.
Redundancy audio stream sum: represent the quantity summation of audio section sound intermediate frequency stream；Can represent with 3bit.
The control information of above-mentioned redundancy audio/video frames can be added to the expansion area of CMMB (China Mobile multimedia broadcasting) multiplexed sub frame head by network side server, as shown in Figure 4；
By the control information of redundancy audio/video flow above, whether terminal is it is known that exist redundant video section or redundancy audio section in multiplexed sub frame, and corresponding length.
Step 103: redundancy audio/video frames is multiplexed in CMMB multiplexed frame and is issued to terminal by network side.
As shown in Figure 4, the data of redundant video section and redundancy audio section are transmitted after the data segment of multiplexed sub frame.So expand and have preferably compatibility, resolve multiplexed sub frame so that do not support the terminal of redundancy audio/video frames also to be able to correctly.
The concrete form of redundant video section is the same with the form of video-frequency band in CMMB multiplex protocol；The form of redundancy audio section is the same with the form of CMMB multiplex protocol middle pitch frequency range.This consistent form so that terminal can use the method resolving Standard Audiovisual frame the same to carry out Analysis design audio/video frames easily.
It is noted that redundancy audio/video frames can also be encapsulated in different multiplexed frames by network side from Standard Audiovisual frame to transmit, it is also possible to be encapsulated in the different subframes of same multiplexed frame from Standard Audiovisual frame by redundancy audio/video frames and transmit.Since reduce the probability that redundancy audio/video frames and Standard Audiovisual frame are made mistakes simultaneously.No matter which kind of mode transmitting redundancy audio/video frames network side uses, and this redundancy audio/video frames controls information and is always located in the same multiplexed sub frame in same CMMB multiplexed frame with it.
It is that end side utilizes redundancy audio/video frames to improve the handling process of broadcast performance as shown in Figure 3；
Step 201: terminal receives CMMB multiplexed frame from CMMB network, and obtains the control information of redundancy audio/video frames from multiplexed frame.
Step 202: judge whether redundancy audio/video frames according to the control information of redundancy audio/video frames, is then to perform step 203, otherwise performs step 204；
Step 203: terminal parses the data of redundancy audio/video frames from multiplexed frame, and preserves the data of redundancy audio/video frames.
Step 204: terminal attempts the Standard Audiovisual frame resolving and decoding in multiplexed frame, if it is possible to be correctly decoded Standard Audiovisual frame, then perform step 205；If Standard Audiovisual frame occurs abnormal, i.e. there are frame losing or Standard Audiovisual frame decoding mistake, then perform step 207.
Step 205: terminal abandons the redundancy audio/video frames that relative reproduction time is less than Current standards audio/video frames, i.e. abandons the redundancy audio/video frames that the Standard Audiovisual frame play is corresponding.So terminal can be judged whether redundancy audio/video frames there is a need to retain by relatively relative reproduction time, and abandoned expired redundancy audio/video frames.
Step 206: in the case of Standard Audiovisual frame can be used, terminal plays Standard Audiovisual frame.Return step 201.
Step 207: in the case of Standard Audiovisual frame exists packet loss or decoding error, it may be judged whether there is the redundancy audio/video frames that the relative reproduction time with packet loss standard frame or decoding error standard frame is consistent, is then to perform step 208；Otherwise return step 201.
Step 208: attempt decoding redundancy audio/video frames, if decoding is correct, then performs step 209, otherwise returns step 201.
Step 209: replace the Standard Audiovisual frame of loss or mistake to play out with decoded redundancy audio/video frames.Return step 201 afterwards.
Claims (14)
1. the method for an improving play performance of terminal in weak signal environment, including: network side generates Standard Audiovisual frame and generates the redundancy audio/video frames of correspondence simultaneously, and Standard Audiovisual frame and the redundancy audio/video frames of generation are issued to terminal, after terminal receives Standard Audiovisual frame and redundancy audio/video frames, if described Standard Audiovisual frame occurs abnormal, described terminal processes also plays corresponding redundancy audio/video frames；
Described redundancy audio/video frames compares described Standard Audiovisual, and its quality is relatively low；
Standard Audiovisual frame in decoding terminals multiplexed frame, if it is possible to be correctly decoded Standard Audiovisual frame, then terminal abandons the redundancy audio/video frames that relative reproduction time is less than Current standards audio/video frames；
The data of redundant video section and redundancy audio section are transmitted after the data segment of multiplexed sub frame.
2. the method for claim 1, it is characterised in that:
Described network side is also the control information that the redundancy audio/video frames generated arranges correspondence, including herein below: the instruction of redundant video section, the instruction of redundancy audio section, redundant video segment length, redundant video stream sum, redundancy audio section length and redundancy audio stream sum.
3. method as claimed in claim 2, it is characterised in that:
Network side adds the control information of described redundancy audio/video frames the expansion area of China Mobile multimedia broadcasting CMMB multiplexed sub frame head to.
4. method as claimed in claim 2, it is characterised in that:
Described terminal therefrom obtains the control information of redundancy audio/video frames after receiving CMMB multiplexed frame, if there is redundancy audio/video frames in the instruction of described control information, then resolve and preserve the data of described redundancy audio/video frames, and when Standard Audiovisual frame exists packet loss or decoding error, select the redundancy audio/video frames being consistent with the relative reproduction time of described Standard Audiovisual frame be decoded and play.
5. the method for claim 1, it is characterised in that:
Redundancy audio/video frames is encapsulated in the identical subframe of same multiplexed frame with corresponding Standard Audiovisual frame and transmits by described network side, or redundancy audio/video frames is encapsulated in different multiplexed frames from corresponding Standard Audiovisual frame transmits, or redundancy audio/video frames is encapsulated in the different subframes of same multiplexed frame from corresponding Standard Audiovisual frame transmits.
6. the method for claim 1, it is characterised in that:
When described network side generates redundancy audio/video frames, according to network redundancy bandwidth selection compression ratio, it is ensured that the redundancy audio/video frames generated according to described compression ratio is in the range of described network redundancy bandwidth is supported.
7. a system for improving play performance of terminal in weak signal environment, including network side and terminal；Described network side includes encoder and sending module；Described terminal includes receiver module, parsing module, memory module, decoder module and playing module；It is characterized in that:
Described encoder generates the redundancy audio/video frames of correspondence while generating Standard Audiovisual frame；
Described sending module is for being issued to terminal by Standard Audiovisual frame and the redundancy audio/video frames of generation；
Described receiver module, for receiving Standard Audiovisual frame and the redundancy audio/video frames that network side generates；
Described parsing module, for Analysis design audio/video frames, and sends the redundancy audio/video frames parsed to memory module；
Described memory module, the redundancy audio/video frames after storing and resolving；
Described decoder module, for the redundancy audio/video frames that the decoding when Standard Audiovisual frame occurs abnormal is corresponding；
Described playing module, the redundancy audio/video frames data after broadcast decoder；
Described redundancy audio/video frames compares described Standard Audiovisual, and its quality is relatively low；
Terminal, the Standard Audiovisual frame in decoding multiplexing frame, if it is possible to be correctly decoded Standard Audiovisual frame, then abandon the redundancy audio/video frames that relative reproduction time is less than Current standards audio/video frames；
Described sending module, is additionally operable to be transmitted the data of redundant video section and redundancy audio section after the data segment of multiplexed sub frame.
8. system as claimed in claim 7, it is characterised in that:
Described network side also includes controlling information generating module, arranges the control information of correspondence for the redundancy audio/video frames for generating；
Described control information includes herein below: the instruction of redundant video section, the instruction of redundancy audio section, redundant video segment length, redundant video stream sum, redundancy audio section length and redundancy audio stream are total.
9. system as claimed in claim 8, it is characterised in that:
Described network side also includes Multiplexing module, for the control information of redundancy audio/video frames is added to the expansion area of China Mobile multimedia broadcasting CMMB multiplexed sub frame head.
10. system as claimed in claim 9, it is characterised in that:
Described Multiplexing module is additionally operable to be encapsulated in the identical subframe of same multiplexed frame redundancy audio/video frames with corresponding Standard Audiovisual frame, or redundancy audio/video frames is encapsulated in different multiplexed frames from corresponding Standard Audiovisual frame, or redundancy audio/video frames is encapsulated in the different subframes of same multiplexed frame from corresponding Standard Audiovisual frame.
11. systems as claimed in claim 7, it is characterised in that:
When described encoder generates redundancy audio/video frames, it is according to network redundancy bandwidth selection compression ratio, it is ensured that the redundancy audio/video frames generated according to described compression ratio is in the range of described network redundancy bandwidth is supported.
12. systems as claimed in claim 8, it is characterised in that:
Described receiver module therefrom obtains the control information of redundancy audio/video frames after being additionally operable to receive CMMB multiplexed frame, and when the instruction of described control information exists redundancy audio/video frames, notifies that described parsing module resolves described redundancy audio/video frames；
The described redundancy audio/video frames corresponding with Standard Audiovisual frame refers to the redundancy audio/video frames being consistent with the relative reproduction time of described Standard Audiovisual frame.
The terminal of 13. 1 kinds of improving play performance of terminal in weak signal environments, including receiver module, parsing module, memory module, decoder module and playing module；It is characterized in that:
Described receiver module, for receiving Standard Audiovisual frame and the redundancy audio/video frames that network side generates；
Described parsing module, for Analysis design audio/video frames, and sends the redundancy audio/video frames parsed to memory module；
Described memory module, the redundancy audio/video frames after storing and resolving；
Described decoder module, for the redundancy audio/video frames that the decoding when Standard Audiovisual frame occurs abnormal is corresponding；
Described playing module, the redundancy audio/video frames data after broadcast decoder；
Described redundancy audio/video frames compares described Standard Audiovisual, and its quality is relatively low；
Described terminal, the Standard Audiovisual frame in decoding multiplexing frame, if it is possible to be correctly decoded Standard Audiovisual frame, then abandon the redundancy audio/video frames that relative reproduction time is less than Current standards audio/video frames；
Described receiver module, is additionally operable to the data by redundant video section and redundancy audio section receiving network side transmission data after the data segment of multiplexed sub frame.
14. terminals as claimed in claim 13, it is characterised in that:
Described receiver module therefrom obtains the control information of redundancy audio/video frames after being additionally operable to receive China Mobile multimedia broadcasting CMMB multiplexed frame, and when the instruction of described control information exists redundancy audio/video frames, notify that described parsing module resolves described redundancy audio/video frames；
The described redundancy audio/video frames corresponding with Standard Audiovisual frame refers to the redundancy audio/video frames being consistent with the relative reproduction time of described Standard Audiovisual frame.
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| CN101923843A (en) * | 2010-07-20 | 2010-12-22 | 广东威创视讯科技股份有限公司 | System and method for realizing redundancy backup of video signals |
| CN102111618B (en) * | 2011-01-20 | 2012-09-05 | 德科仕通信(上海)有限公司 | Method and system for improving correctness of calculating number of video transport stream (TS) packet losses |
| CN104754341B (en) * | 2013-12-31 | 2019-02-26 | 华为技术有限公司 | A kind of video data encoding, decoded method and apparatus |
| CN104935944B (en) * | 2014-03-18 | 2018-03-13 | 华为技术有限公司 | A kind of video data encoding, the method and apparatus of decoding |
| CN110278459A (en) * | 2018-03-16 | 2019-09-24 | 上海小麦互动企业发展有限公司 | Content control system and its control method |
| CN114584809A (en) * | 2020-12-02 | 2022-06-03 | 华为技术有限公司 | Data transmission method and system and electronic equipment |
| CN114121050A (en) * | 2021-11-30 | 2022-03-01 | 云知声智能科技股份有限公司 | Audio playing method and device, electronic equipment and storage medium |
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