MPEG-2解码器错误检测  

Error-detection of MPEG-2 decoder

作　　者：郑铠城[1] 

机构地区：[1]同济大学超大规模集成电路研究所,上海200331

出　　处：《大众科技》2012年第12期14-15,108,共3页Popular Science & Technology

摘　　要：MPEG-2视频解码器检测码流,通常检测到的是语法错误,而由于可变长码的影响,检测到的错误位置并不是错误的起始位置。文章分析了MPEG-2码流的错误检测原理,介绍了能引起视频序列大范围出错的I-帧图像错误检测。When MPEG-2 video decoder works,it can determine the syntax errors of video bit stream,but it can not examine the starting position of error because of the effect propagation in VLC.In this paper,the principle of error detection for MPEG-2 video bit stream was analyzed,and error detection of I frame image which can cause a wide range of errors in video sequence was presented.

关 键 词：MPEG-2 错误检测 I-帧 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]