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H.265 code stream unequal error protection method and system based on LDPC (Low Density Parity Check) coding and electronic equipment

An error protection, electronic equipment technology, applied in the direction of error prevention, transmission system, digital transmission system, etc., can solve problems such as reducing LDPC coding efficiency, and achieve the effect of solving LDPC coding efficiency and improving video quality

Pending Publication Date: 2022-04-22
北京银河信通科技有限公司
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Problems solved by technology

[0005] The main purpose of the present invention is to provide a method and system for unequal error protection of H.265 code streams based on LDPC coding, to solve the problem of reducing the efficiency of LDPC coding by using LDPC coding with the same code rate in the prior art

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  • H.265 code stream unequal error protection method and system based on LDPC (Low Density Parity Check) coding and electronic equipment
  • H.265 code stream unequal error protection method and system based on LDPC (Low Density Parity Check) coding and electronic equipment
  • H.265 code stream unequal error protection method and system based on LDPC (Low Density Parity Check) coding and electronic equipment

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Embodiment Construction

[0043] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0044] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate...

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Abstract

The invention discloses an H.265 code stream unequal error protection method and system based on LDPC (Low Density Parity Check) coding and electronic equipment, and the method comprises the steps: determining the importance degree of data in an H.265 code stream according to the type of the data in the H.265 code stream generated in advance; dividing the data in the H.265 code stream into different grades according to the importance degree of the data in the H.265 code stream; and performing LDPC coding of different code rates on data of different levels in the H.265 code stream to obtain coded data. According to the invention, LDPC coding of different code rates is carried out on the data of different levels according to the importance degree of the data in the H.265 code stream, so that the video quality of wireless real-time transmission is improved under the condition of not increasing extra bandwidth consumption, and the problem that the LDPC coding efficiency is reduced due to the adoption of LDPC coding of the same code rate in the prior art is solved.

Description

technical field [0001] The invention relates to the field of video data protection, in particular to an LDPC-coded H.265 code stream unequal error protection method, system and electronic equipment. Background technique [0002] Wireless real-time video transmission has a large demand for bandwidth, so it is necessary to compress the original video data efficiently. The H.265 encoding standard is the mainstream encoding standard for ultra-high-definition video applications and is widely used in various ultra-high-definition video industries. [0003] Compared with the previous generation coding standard, H.265 only needs 50% bandwidth to play the same quality video. But at the same time, due to the high-efficiency compression of the H.265 standard, the compressed video stream is also more sensitive to bit errors during transmission. Therefore, in order to achieve high-quality video transmission, certain protection measures must be taken. [0004] Generally speaking, due t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/103H04N19/157H04N19/70H04L1/00
CPCH04N19/103H04N19/157H04L1/007H04N19/70
Inventor 张越姚晓霞李佳宣李倩王晓东
Owner 北京银河信通科技有限公司