摘要
电视台无压缩数字播放系统除了实现系统自动化功能之外 ,至关重要的一点就是要保证播出的质量 ,即在无压缩视频流播出时不掉帧、无黑场、按帧切换等等 .本文提出了一种多线程并行直接 I/ O (m ultithread parallel direct I/O- - MPDIO)存取控制策略 ,并详细描述了它的设计与实现 .测试结果表明 。
TV stations uncompressed digital playing system must realize a series of automatic function. Besides these, one of the most important performances that the uncompressed digital playing system must meet is no frame lost, no dark field, and partitioning by frame in playing. In this paper an access algorithm is put forward. Its design, realization and performance analyses are described in detail .The test results indicate that this algorithm can meet the performance requirement perfectly.
出处
《小型微型计算机系统》
CSCD
北大核心
2003年第11期1996-1999,共4页
Journal of Chinese Computer Systems
基金
国家自然科学基金 ( 60 2 73 0 74)资助
关键词
无压缩数字播放
媒体流
存取控制
多线程
并行
直接I/O
uncompressed digital playing
media stream
access control
multithread
parallel
direct I/O
