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Video coding method and system

A video coding and coding technology, applied in the field of video coding, can solve the problems of high data processing requirements and insufficient data processing tasks of a single DSP, and achieve the effect of saving system costs

Inactive Publication Date: 2008-05-21
SUMAVISION TECH CO LTD
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AI Technical Summary

Problems solved by technology

However, standard definition and high definition digital video coding have higher data processing requirements, and a single DSP is not enough to complete all data processing tasks in real time

Method used

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  • Video coding method and system

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Embodiment Construction

[0027] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0028] The main idea of ​​the present invention is to divide the original image to be encoded into several strips, which are jointly processed by a plurality of strip encoding DSPs, and then synthesized into a complete bit stream of one frame of image.

[0029] FIG. 1 is a schematic structural diagram of a video coding system in a specific embodiment of the present invention. As shown in Figure 1, the system includes a main control CPU11, an image acquisition DSP12 and no less than two strip coding DSPs, wherein the main control CPU can also be a DSP.

[0030] The main control CPU, image acquisition DSP and several strip coding DSPs constitute the system backplane, which completes all application layer functions, including user interaction interface (such as web pages, indicator lights, buttons and ...

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Abstract

The invention discloses a video encoding method and the system, which is suitable for the AVS field. The method is as follow: the image acquisition DSP acquires a frame of encoding original image via a video input device, the image acquisition DSP divides the original image to no less than two strips in raster scanning order and sends the strip data to the corresponding strip encoding DSP; the strip encoding DSP encodes the input strip data to generate strip grade bit streams; the strip encoding DSP sends the strip grade bit streams to a main control CPU; the strip grade bit streams are connected together by the main control CPU in the serial number order, then the information of a frame head and a sequence head is added to form a complete code stream and output. The invention has the advantages of enabling to control a plurality of DSPs to work jointly and ensuring the real-time accomplishment of the arithmetic stated by the AVS standard.

Description

technical field [0001] The present invention relates to the field of multimedia technology, in particular to a video encoding method and system. Background technique [0002] With the popularity of digital TV broadcasting, digital video surveillance and other services, the demand for digital video coding systems is increasing. Video coding standards stipulate a complete set of video compression coding algorithm tools, which is the technical core of video coding systems. The "Information Technology: Advanced Audio and Video Coding" standard (hereinafter referred to as the AVS standard) can realize compression coding of SD and HD videos at a relatively low bit rate, while maintaining good subjective and objective picture quality, and is currently one of the most advanced video coding standards. one. [0003] A digital signal processor (Digital Signal Processor, DSP) has strong computing power, and is especially suitable for fields requiring intensive data processing such as d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/32H04N19/174
Inventor 张刚李欣余晓建张迪
Owner SUMAVISION TECH CO LTD
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