Method for spreading digital audio and video parameter set

A parameter set, audio and video technology, which is applied in the field of digital audio and video parameter set transmission, can solve the problems of difficulty in ensuring real-time transmission of audio or video parameters, redundant bandwidth occupation, and difficulty in ensuring synchronization, etc., to achieve real-time transmission of parameters problems, effective use of bandwidth, and the effects of strong practical value
CN101453653AInactive Publication Date: 2009-06-10ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZTE CORP
Publication Date
2009-06-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for transmitting a digital audio-video parameter set. The method comprises the following steps: in the process of sending each received circuit of an audio-video code stream by the broadcast sending end, the parameter set and corresponding audio-video data are separated; and before the audio-video data with the same parameter set is sent in each multiplexing subframe, the same parameter set is sent to the broadcast receiving end. The same parameter set is multiplexed in a multiplexing block or an audio-video data unit; and if the parameter set is changed compared with the prior parameter set, the changed same parameter set is sent to the broadcast receiving end to indicate that the parameter set is changed. The method is applied to avoid repeated transmission of the same parameter set, can effectively utilize bandwidth, well solve the problem of real-time parameter transmission, can rapidly and randomly access a user and bring no extra influence on a continuously-watching user.
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Description

technical field

[0001] The invention relates to the technical field of digital broadcasting communication, in particular to a method for realizing the transmission of digital audio and video parameter sets. Background technique

[0002] With the development of multimedia communication technology, more application requirements are put forward for the transmission of digital audio and video data. For example, the use of broadcasting technology to achieve real-time audio and video transmission, real-time playback and other application requirements. At present, when many kinds of audio and video coding algorithms realize audio and video transmission, the decoding end must obtain the necessary parameters before receiving the code stream before decoding. This part of the parameters is called "parameter set", which requires the encoding end to need Send the parameter set to the decoding end in real time through some means.

[0003] In the prior art, the transmission methods of pa...

Claims

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