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Highly integrated MPEG-4 video decoding unit and related decoding method

A technology for video decoding and video objects, which is used in digital video signal modification, television, electrical components, etc., and can solve problems such as large chip size, high chip complexity, and high cost.

Inactive Publication Date: 2005-04-27
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, to actually implement the MPEG-4 decoding module described above, it is necessary to use higher chip complexity, larger chip size, and higher cost

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  • Highly integrated MPEG-4 video decoding unit and related decoding method
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  • Highly integrated MPEG-4 video decoding unit and related decoding method

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Embodiment Construction

[0052] The invention discloses a highly integrated MPEG-4 video decoding unit and a method for decoding the MPEG-4 video. Compared with the prior art, the method and related devices proposed by the present invention can reduce the number of decoding modules and keep the original functions.

[0053] FIG. 7 is a functional block diagram of the MPEG-4 video decoding unit 200 of the present invention. The video decoding unit 200 roughly includes three parts, namely, the video object plane decoding switching circuit 210 , the decoding module set 205 , and the memory 215 , wherein the memory 215 is used to store the operation results output by the decoding module set 205 . The memory 215 can be optionally divided into multiple areas, in this embodiment into two areas 270 and 275 according to result type (however, this does not limit the scope of the invention).

[0054] The decoding module set 205 includes multiple decoding modules, most of which can provide multiple functions duri...

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Abstract

A highly integrated MPEG-4 video decoding unit includes switching circuit, a set of decoding modules, and a memory. The set of decoding modules includes a plurality of decoding modules, each capable of decoding a predetermined signal in each of a plurality of VOP types. The decoding module may include a VOP type indicating flag that is set by the switching circuit so that the correct lookup table can be used during decoding of the predetermined signal. Alternatively, the necessary lookup table(s) may be electronically transferred to the corresponding decoding module. According to the type of VOP being decoded, the switching circuit may send a predetermined sequence of selection signals to a multiplexer so that the decoded results from appropriate decoding modules are stored into the corresponding storage elements in the memory.

Description

technical field [0001] The invention provides a video decoding unit, especially a highly integrated MPEG-4 video decoding unit and a related method for decoding the MPEG-4 video. Background technique [0002] MPEG-4 is an audio-visual processing standard developed by the Motion Picture Experts Group (MPEG), which can be applied in digital TV, interactive graphics, or interactive multi media )superior. Different from the previous MPEG-1 and MPEG-2 standards (these two standards basically only regulate the standards that can continuously play a series of pictures), MPEG-4 proposes the integration of a variety of possible multimedia Objects (multiple media objects), each multimedia object can be a real object or a computer-generated object. When describing and synchronizing the above-mentioned multimedia objects, they can be combined into a composite audiovisual scene, so that they can be easily transmitted through a network. [0003] MPEG-4 defines several layers of differe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M7/42H04N7/12H04N7/26
CPCH04N19/00387H04N7/26638H04N19/00533H04N7/26335H04N19/44H04N19/20
Inventor 林恭生郭惠华
Owner MEDIATEK INC