【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 ,该策略很好地满足了系统的性能指标更多还原

【Abstract】 TV stations 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.更多还原