%0 Journal Article
%T A Video-on-Demand Delivery Policy for Improving the Disk Access Performance<br>一种克服磁盘存取受限的视频点播机制
%A HE Xiao-Jian LI Fang-Min YOU Jin-Yuan
%A <br>贺小箭
%A 李方敏
%A 尤晋元
%J 计算机科学
%D 2003
%I 
%X In local high-speed network, the performance of VOD system is limited by disk-bound. In this paper, we propose an enhanced video-on-demand delivery policy based on dynamic buffering algorithm. Considering the controllable bandwidth allocation for multicast and the characteristics of on-demand video, we optimize the disk access performance of video sever to fully utilize the I/O capability of disk and the bandwidth of network. For a practical VOD system, this strategy can supply instantaneous video-on-demand services and maximum on-demand video number cheaply.
%K Video-on-Demand
%K Multicast
%K Emerging-stream algorithm
%K Dynamic buffering<br>视频点播系统
%K 视频流
%K 组播模式
%K 视频服务器
%K 组播通信
%K 磁盘存取
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=DE3E528F321AF070&yid=D43C4A19B2EE3C0A&vid=340AC2BF8E7AB4FD&iid=E158A972A605785F&sid=228A710F49B6CE58&eid=46CB27789995047D&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=6