%0 Journal Article
%T Implementation and Testing of ALM Based HDTV Live Prototype System<br>基于应用层组播的高清流媒体直播原型系统的实现和测试
%A HU Wen-yan
%A YE De-jian
%A <br>胡文彦
%A 叶德建
%J 中国图象图形学报
%D 2007
%I 
%X In this paper,we applied ALM(application layer multicast) into HDTV live system,design and implement a multimedia live prototype system with large concurrency,high efficiency and low delay.We also created a distributed time-shifting algorithm,which was integrated in the system in order to allow users to watch both live and delayed TV programs.This prototype system was put into large-scale testing for more than one month in Fudan Campus during World Cup 2006.The result shows that it is a good solution to output bandwidth bottleneck at server side and long delay of normal P2P technology at the client.The maximum amount of online users was over 460.It also provides a good solution to HDTV live system,which is the focus of National Science and Technology Department.
%K ALM
%K multimedia live system
%K distributed time-shifting<br>应用层组播
%K 流媒体直播系统
%K 分布式时移
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=38A512A9AB01DAC0&yid=A732AF04DDA03BB3&vid=59906B3B2830C2C5&iid=F3090AE9B60B7ED1&sid=4E17F6A5D7499FF3&eid=A84A3AD26CE1D4D2&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=7