Motion vector prediction multiplex design method in multi-mode standard decoder

A technology of motion vector prediction and design method, which is applied in the direction of TV, electrical components, digital video signal modification, etc., can solve the problem of large area, achieve the effect of reducing hardware area, realizing real-time decoding, and simplifying the logic of access

Inactive Publication Date: 2006-07-12
宁波中科集成电路设计中心有限公司
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Problems solved by technology

Especially to implement a high-definition decoder that supports both AVS and H.264 standards, if the two decoders are simply superimposed, the area will be very large

Method used

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Embodiment Construction

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0013] A design method for motion vector prediction multiplexing in a multimode standard decoder, comprising:

[0014] 1. According to the nature of the data stream, the MVP module can be divided into an input module, a main loop module for motion vector prediction, a block motion prediction module, a module for obtaining adjacent block information, a module for obtaining reference macroblock information, and an output module. The multiplexing design method:

[0015] 1) Input module: including "read command module (read cmd fifo)" and "read residual information module (read vldfifo)", which transmit command and residual information respectively. When the firmware (firmware) sends sequence-level information, it first sends an avs_flag flag, and all subsequent modules use this flag to distinguish the different parts of the two standards, so that...

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Abstract

Present invention relates to motion vector prediction multiplexing design method for in standard decoder, 1, firmware transmitting a avs_flag sign to MVP module, 2, adopting deblocking lower embedded subblock format, 3, taking adjacent block messages module pair frame field self adaptation sign poke, to make two different standard proceeding same processing, to realize multiplexing, 4, taking reference macroblock messages design all messages of parallel macroblock always taking from the first one reference picture in reference picture macroblock movement messages cache, in updating also saving to first reference picture, 5, the design to adjacent block data stream updating system, to make multiplexing required adjacent block information content down to the least, reducing times for reading external storage. The advantages are realizing compatibility of H,264 with AVS video coding standard MVP function, not only to ensure validity but also greatly to reduce decoder hard ware area. Said invention can reduce cache by 75 %, and realize real time decode to high resolution image.

Description

technical field [0001] The invention relates to a motion vector prediction multiplexing design method, in particular to a motion vector prediction (MVP) multiplexing design method in an H.264 / AVS multimode standard decoder. Background technique [0002] AVS is China's first digital audio and video codec standard with independent intellectual property rights, and its full name is "Advanced Audio and Video Coding Standard for Information Technology". H.264 is a video coding standard developed by the Joint Video Working Group (JVT) composed of relevant video coding experts from ITU-T and ISO two international standardization organizations. Video compression standards have been significantly improved, but at the same time, the complexity of hardware decoding has also increased, which brings certain challenges to hardware design. [0003] In the real-time high-definition video decoding operation, a large amount of operation logic is required and a large amount of intermediate da...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/32H04N19/513
Inventor 黄晁彭聪谢朝辉徐明亮徐涛
Owner 宁波中科集成电路设计中心有限公司
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