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| 基于Internet交互系统引入微分环的多媒体同步方法 | |
| 引用本文： | 田友胜,侯义斌,钱屹,陈亚滨. 基于Internet交互系统引入微分环的多媒体同步方法[J]. 西安交通大学学报, 2002, 36(10): 1058-1061 |
| 作者姓名： | 田友胜 侯义斌 钱屹 陈亚滨 |
| 作者单位： | 西安交通大学电子与信息工程学院,710049,西安 |
| 摘 要： | 针对交互系统多媒体同步中存在的问题，提出了引入预测环节的多媒体同步方法，采用控制论方法，将交互系统的多媒体信息传输与回放过程作为一个系统进行分析，得出发送缓冲和接收缓冲是惯性环节，网络传输是迟滞环节，各环节都存在一定的相角滞后，媒体信息预测是一个微分环节，可引入一定的相角超前，将这种预测环节引入到多媒体同步系统中，对系统进行超前校正，可改善系统的实时性能，减小网络延迟抖动对多媒体同步的影响，仿真结果证明了预测环节在克服网络延迟抖动的影响，提高交互系统的实时性，改善媒体间同步效果等方面的有效性。 |
| 关 键 词： | Internet 交互系统 微分环 多媒体同步 控制论 网络传输延迟 网络通信 |
| 文章编号： | 0253-987X(2002)10-1058-04 |
| 修稿时间： | 2002-01-21 |
Differentiator Method for Multimedia Synchronization in Interaction System over the Internet |
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| Tian Yousheng,Hou Yibin,Qian Yi,Chen Yabin. Differentiator Method for Multimedia Synchronization in Interaction System over the Internet[J]. Journal of Xi'an Jiaotong University, 2002, 36(10): 1058-1061 | |
| Authors: | Tian Yousheng Hou Yibin Qian Yi Chen Yabin |
| Abstract: | According to the interaction system's real time requirements, prognostication is introduced into multimedia synchronization method. Adopting the cybernetics method, multimedia information transmission and playback process as a whole system are analyzed. Sender buffer and receiver buffer are inertia links, and network transformation is hysteretic link, each of them has a phase lag. Multimedia information prognostication is a differential link and has a phase forward. Multimedia information prognostication is introduced into multimedia synchronization system to revise the phase lag and improve the real time capability. The simulations have educed these results that the multimedia information playback delay becomes shorter, and the multimedia synchronization effects are improved. |
| Keywords: | multimedia synchronization cybernetics differentiator |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |