实时流媒体传输中客户终端系统缓冲区设计  

Design on the Buffer of Client System in Real-Time Media System

作　　者：沈勇[1] 张新荣[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《微处理机》2007年第5期89-91,共3页Microprocessors

摘　　要：网络时延抖动以及时钟偏移等问题,会对媒体流播放是否流畅产生重要影响。从客户终端的角度来讨论如何优化设置和管理缓冲区,以及平滑媒体流的播放,并提出了以SLOW-START为启动模型的动态缓冲控制算法。该算法可以有效地减小起始状态的播放延迟,并有效防止缓冲区上溢造成的播放跳跃以及缓冲区下溢造成的播放停顿。The problem of delay -jitter and clock -skew in the network has a great influence on the continuity of stream media＇ s playing. This paper discusses about the optimization of buffer＇ s design and management in the view of client terminal PC so as to smoothen the stream media, and presents the dynamic buffer control algorithm modeled with SLOW -START. The playing latency is effectively short- ened by the proposed algorithm. Moreover, the playing stall caused by buffer underflow and the playing hopping caused by buffer overflow are prevented effectively.

关 键 词：流媒体 终端系统 缓冲区设计 同步 时延抖动 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]