| VOD广播协议族 |
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| 引用本文： | 苏磊,左晓宁.VOD广播协议族[J].中国有线电视,2003(23):24-28. |
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| 作者姓名： | 苏磊 左晓宁 |
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| 作者单位： | 1. 北京信息技术研究所,北京,100088
2. 北京航空航天大学,北京,100083 |
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| 摘 要： | 真视频点播(T—VOD)技术支持双向点播，点播延迟短，因而成为技术热点。但该技术带来的双向网络改造费用大，一般多用在局域网中。而准视频点播技术(N—VOD)无需改造网络即可实现视频点播，在有线电视等宽带网中应用广泛。以准视频点播技术为背景，通过对VOD广播协议族进行归纳和分析，从而加深人们对N—VOD技术的理解。
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| 关 键 词： | 真视频点播 交错广播协议 锥形广播协议 快速广播协议 宝塔广播协议 调和广播协议 VOD |
| 文章编号： | 1007-7022(2003)23-0024-04 |
| 修稿时间： | 2003年7月21日 |
Video on Demand Protocols |
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| SU Lei ,ZUO Xiao-ning.Video on Demand Protocols[J].China Cable Television,2003(23):24-28. |
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| Authors: | SU Lei ZUO Xiao-ning |
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| Affiliation: | SU Lei 1,ZUO Xiao-ning 2 |
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| Abstract: | The T-VOD technology becomes the technological focus with its interactive service mode and short delay. But it brings a big problem that the reconstructor expenses of the network is costliness, and it makes the T-VOD technology commonly used in the local network. On the other hand, the N-VOD technology can order program without the network reconstructor, and this makes that the N-VOD technology is applied widely in the CATV network and other wide band network. This paper in the context of the N-VOD technology, concludes and analyses this technology's core knowledge - VOD broadcasting protocols. |
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| Keywords: | VOD(Video-on-Demand) Staggered Broadcasting Protocols Pyramid Broadcasting Protocols Fast Broadcasting Protocols Pagoda Broadcasting Protocols Harmonic Broadcasting Protocols |
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