| 一种新的媒体内同步控制算法 |
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| 引用本文： | 许延,常义林,刘增基. 一种新的媒体内同步控制算法[J]. 计算机研究与发展, 2002, 39(12): 1675-1680 |
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| 作者姓名： | 许延 常义林 刘增基 |
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| 作者单位： | 西安电子科技大学ISN国家重点实验室,西安,710071 |
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| 基金项目： | 高等学校博士学科点专项科研基金(2 0 0 10 70 10 0 6)，综合业务网理论及关键技术国家重点实验室基金资助 |
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| 摘 要： | 提出了一种新的媒体同步播放方案，该方案是基于发送方的媒体同步控制，根据缓冲区的占用情况来检测失步，并将其反馈给发送方，发送方利用给出的控制函数对发送帧率进行调整，来保持接收方媒体的同步播放，调节算法简单易实现，实验表明该方案能够处理由于网络传输时延特性变化引起的失步，与其它反馈控制方案相比具有更低的数据丢失率，从而使数据表现更为平滑连续。
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| 关 键 词： | 媒体 同步控制算法 反馈调节 多媒体系统 |
A NEW ALGORITHM FOR INTRA-MEDIA SYNCHRONIZATION |
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| XU Yan,CHANG Yi Lin,and LIU Zeng Ji. A NEW ALGORITHM FOR INTRA-MEDIA SYNCHRONIZATION[J]. Journal of Computer Research and Development, 2002, 39(12): 1675-1680 |
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| Authors: | XU Yan CHANG Yi Lin and LIU Zeng Ji |
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| Abstract: | A new scheme for synchronized playback in multimedia systems is proposed. This multimedia synchronization control is based on the source regulation. Asynchrony is detected by watching the buffer level of the sink. Once an asynchrony is discovered, corrective transmission rate, which is decided by the control function, is adopted by the source in order to restore synchrony. The regulation algorithm is easy to implement. Experimental results show that the scheme is able to deal with asynchronies introduced by the variation of the average delay. The scheme wins an advantage over previous others in decreasing the lost data and keeping continuous presentation. |
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| Keywords: | multimedia synchronization continuous playback feedback regulation |
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