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Sequential image processor without decoding MPEG bitstream

无需解码 MPEG 比特流的顺序图像处理器

基本信息

批准号：
13680425
负责人：
MIYAUCHI Arata
金额：
$ 2.11万
依托单位：
Musashi Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13680425/
关键词：
MPEG Architecture Real time OS Application program Scheduling Chip area estimation Delay time estimation 符号化動きパラメータ自動生成プロセッサアーキテクチャ

项目摘要

The objective of this research is to develop a MPEG bitstream processor without decoding the bitstream. Instead of designing the architecture of processor by designer, we investigate the system which analyses the application program and constructs processor architecture.MPEG motion processing needs complicated programming and high performance environment to analyze parameters and to compute them in real time. We have proposed MBEP(Mpeg BitstrEam Processor) for MPEG movie processing. MI3EP has a dedicated architecture for computations of the MPEG movie. Inside MBEP, there are three main parts divided by their role. First part is the control part to control MBEP units by MBEP assembler code. Second part is the parameter detection part to extract parameters from bitstream. Third part is the arithmetic part to compute extracted parameters. We have developed the parameter detection part and the control part involved. Parameter formats of MPEG consist of n(1・n・32) bits. Taking out these parameters causes complex programming and a number of processes. Thekey points for the parameter detection are to find header information and to extract given numbers of bits. We improve the header information detection unit and the given n bits extraction unit.According to extracting several parameters from movie data coded by MPEG2 MP@ML, MBEP shorten the processing time of parameter extraction and its time is less than real-time processing period. MBEP makes us achieve the desired objective of simple assembler program and speeding up movie processing.

本研究的目的是开发一种不需要对码流进行解码的MPEG码流处理器。我们研究的不是设计者设计处理器的体系结构，而是分析应用程序和构建处理器体系结构的系统，需要复杂的编程和高性能的环境来分析参数并实时计算。我们提出了一种用于MPEG电影处理的MPEP(MPEGBitstream Processor)。MI3EP有一个专门的架构来计算mpeg电影。在MBEP内部，有三个主要部分，按他们的角色划分。第一部分是用MBEP汇编语言代码控制MBEP单元的控制部分。第二部分是参数检测部分，用于从码流中提取参数。第三部分是计算提取参数的算术部分。开发了相关的参数检测部分和控制部分。Mpeg的参数格式由n(1·n·32)比特组成。取出这些参数会导致复杂的编程和许多过程。参数检测的关键是找到报头信息并提取给定的比特数。改进了头信息检测单元和给定的n比特提取单元，对MPEG2 MP@ML编码的电影数据进行多参数提取，缩短了参数提取的处理时间，且时间小于实时处理周期。MBEP使我们达到了汇编程序简单、电影处理速度快的预期目标。