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Code sending method and device

A sending method and sending device technology, applied in the field of communication, can solve the problems of occupying bandwidth, reducing the bandwidth of normal code stream image transmission, and not considering macroblocks, etc.

Active Publication Date: 2010-06-23
NEW H3C TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0007] The problem in the prior art is that the traditional SLICE division method does not consider the content of macroblocks (quasi-stationary macroblocks or non-stationary macroblocks), and uniformly processes all macroblocks
Therefore, unnecessary redundant packets will occupy additional bandwidth and reduce the transmission bandwidth of normal code stream images

Method used

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  • Code sending method and device

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Embodiment Construction

[0061] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0062] The present invention provides a coded transmission method, such as image 3 shown, including:

[0063] Step s301. Obtain the Mth macroblock currently to be encoded, and calculate the average activity corresponding to the Mth macroblock. The average activity corresponding to the Mth macroblock is: according to the activity of the Mth macroblock and the Mth M and N are integers not less than 0.

[0064] Step s302, judging whether the average a...

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Abstract

The invention discloses a code sending method and a code sending device. In the invention, a media packet including SLICE with different priorities is differentially processed, and the media packet including a specific priority is only subjected to redundancy protection. By using the method and the device, an effective utilization ratio of the network bandwidth can be improved under the conditionof guaranteeing a packet-loss recovering ratio in packet losing network environment.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a coded sending method and device. Background technique [0002] In communication equipment such as video conferencing, IP (Internet Protocol, Internet Protocol) videophone and other IP-based video surveillance, in order to ensure real-time requirements, the encoded media packets are passed through UDP (UserData Protocol, User Datagram Protocol) UDP connection is an unreliable connection. In actual network applications, there will be inevitable loss of media packets, but even the slightest packet loss (0.5%-2%) will have a great impact on image quality. Impact. [0003] In the case of packet loss, it is particularly important to use a suitable packet loss compensation algorithm to ensure better visual effects. Commonly used packet loss compensation algorithms include the decoding side packet loss concealment algorithm and the FEC (Forward Error Conceal, forward er...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/22H04L29/08H04N7/66H04N19/89
Inventor 雷奕吴坚黄建强
Owner NEW H3C TECH CO LTD
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