Method and device for removing competition prevention code

A technology of competition codes and start codes, applied in the field of eliminating anti-competition codes, can solve problems such as low efficiency of decoding video code streams, achieve the effects of increasing copy speed, improving decoding efficiency, and reducing workload

Active Publication Date: 2013-08-21
北京君正集成电路股份有限公司
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  • Abstract
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Problems solved by technology

[0006] But the inventors found that in the video code stream, anti-competition codes exist in large numbers, which will inevitably cause the copying of a large amount of data, and when copying, the unit is byte, so the efficiency of decoding the video code stream is relatively low

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  • Method and device for removing competition prevention code
  • Method and device for removing competition prevention code

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the present invention will be further detailed below in conjunction with the accompanying drawings illustrate.

[0023] Adopting the method provided by the present invention for a video code stream, when deleting the anti-competition code and copying data, it is guaranteed not to copy the longest part of the bit stream in the video code stream, i.e. part of the data, but to The data of other parts is copied, and it can be seen that this method reduces the workload of data copying compared with the prior art while deleting the anti-competition; Compared with the prior art, the copying speed is greatly improved. Therefore, the method provided by the invention can not only reduce the workl...

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Abstract

The invention relates to the technical field of communication electronics, in particular to a method and device for removing a competition prevention code. The method is used for improving the decoding efficiency of video bitstream and specifically comprises the steps of determining the bitstream between two start codes received in sequence to be target bitstream, determining part of data which have the longest bitstream between the start codes and adjacent competition prevention codes and between the two competition prevention codes in the target bitstream, and deleting the competition prevention codes and copying the bitstream except the part of data to a vacant position. By means of the method for removing the competition code, the work amount of copying data can be reduced, and meanwhile the speed of copying the data can be improved, namely the decoding efficiency of the video bitstream is improved.

Description

technical field [0001] The invention relates to the technical field of communication electronics, in particular to a method and device for eliminating anti-competition codes. Background technique [0002] In recent years, as mobile terminal devices such as smart phones and tablet computers have been used by more and more people, multimedia (audio, video, etc.) content has grown explosively. And with the development of audio and video technology, high-quality and high-definition video can meet people's various needs, and high-quality and high-definition video means large bit stream, which puts forward higher requirements for video bit stream decoding. Require. [0003] In the encoding process of the video code stream, in order to prevent the video stream from being destroyed during transmission, a series of bit streams are usually divided into multiple small segments, and each small segment is marked with the same start code as the small segment of the stream start. During...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/913H04N7/26H04N19/00
Inventor 梁雪群刘睿
Owner 北京君正集成电路股份有限公司
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