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Video frequency decoding device and method thereof

A video decoding and storage device technology, applied in the field of video decoding, can solve problems such as the inability to decode high-definition videos smoothly and the decoder does not have high-definition decoding capabilities, and achieve the effects of saving chip area, convenient deletion, and high flexibility

Active Publication Date: 2013-07-17
ACTIONS ZHUHAI TECH CO
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AI Technical Summary

Problems solved by technology

But its shortcomings are very obvious, that is, it cannot decode high-definition video smoothly, and many decoders do not have the actual high-definition decoding capability

Method used

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  • Video frequency decoding device and method thereof
  • Video frequency decoding device and method thereof
  • Video frequency decoding device and method thereof

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Embodiment Construction

[0067] The present invention aims at the problems existing in the prior art, and provides a video processing device that simultaneously supports motion vectors of multiple standards such as H.264, H.263, MPEG4, MPEG2, RV8, RV9, and VC-1. In order to make the object, technical solution, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0068] First, let's introduce the basics of motion vector decoding:

[0069] Video decoding is performed in units of macroblocks (MBs), and the size of one MB is 16x16, and the unit is a pixel (pixel). When decoding a frame of image, each MB is decoded sequentially from left to right and from top to bottom. The motion vector decoding also adopts the same order, but within one MB, it is decoded sequentially according to the order of the blocks. A MB can be divided into multiple blocks, as for how to divide into blocks, it is...

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Abstract

The invention provides a video frequency decoding method which comprises a motion vector decoding method, comprising the steps of: A. judging whether a current macrolbock to be decoded is an Intra macrolbock; stopping decoding and returning to an end status if the current macrolbock is the Intra macrolbock; performing a step B if the current macrolbock is not the Intra macrolbock; B. obtaining differential motion vector and adjoining block information, and decoding the motion vector of a current block according to the differential motion vector and the adjoining block information; and C. judging whether the current macrolbock is completely decoded after the motion vector of the current bock is decoded, entering into the end status if the current macrolbock is decoded, taking the next block in the current macrolbock as the current bock if the current macrolbock is not decoded, and returning to the step B. The invention further provides a video frequency decoding device. The solution ofthe invention is higher in flexibility and good in compatibility, and the required area of a chip is saved.

Description

technical field [0001] The present invention relates to video decoding technology, in particular to a video decoding device and method. Background technique [0002] There are many types of video standards currently on the market, such as H.264, H.263, MPEG, RMVB, VC-1, etc., and each standard has its own advantages and disadvantages, so for a long time, they Will co-exist in the market for a long time, so full format support becomes one of the important basis for evaluating chips. [0003] Most of the video decoders currently on the market are completed by software, and each format requires a decoding software to decode. The advantages of software decoding are low cost and flexible application. But its disadvantage is very obvious, that is, it cannot decode high-definition video smoothly, and many decoders do not have the actual high-definition decoding capability. [0004] Therefore, users urgently need a decoding technology that can support multiple video standards and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/32H04N9/804H04N19/44
Inventor 陈樟强
Owner ACTIONS ZHUHAI TECH CO
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