| 基于有线电视网络平台视频点播技术的实现 |
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| 引用本文： | 苏磊,左晓宁.基于有线电视网络平台视频点播技术的实现[J].中国有线电视,2003(Z3). |
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| 作者姓名： | 苏磊 左晓宁 |
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| 作者单位： | 北京信息技术研究所 北京100088
(苏磊)，北京航空航天大学 北京100083(左晓宁) |
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| 摘 要： | 通过对有线电视网络的频带划分、拓扑结构的介绍以及真视频点播 (T -VOD)技术对通信网络要求的分析 ,深入剖析T -VOD技术在有线电视网上的实现策略 ;另外通过对T -VOD系统以及N -VOD系统典型实现的体系结构和性能特点的分析 ,全面地总结了有线电视网上视频点播技术的实现方案 ,并最终提出有线电视网上实现双向数字业务的一种构想
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| 关 键 词： | 真视频点播 准视频点播 线缆调制解调器 码分多址接入 恒定比特率传输 变比特率传输 |
The Realization of the Video-on-Demand Technology Based on CATV Network Environment |
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| SU-lei ,ZUO Xiao-ning.The Realization of the Video-on-Demand Technology Based on CATV Network Environment[J].China Cable Television,2003(Z3). |
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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: | This paper makes a study of the realization strategy of the T-VOD technology based on CATV network through introducing the frequency channel and topological structure of the CATV network,and the analysis of the requests of the T-VOD technology on the communications network. In addition,through the separately analysis of systematic structure and capability of the typical realization of the T-VOD and N-VOD system,generally summarize the realization project of the VOD technology on the CATV network. In the end,the paper brings forward a suppose of the realization of the symmetrical digital operation on the CATV network. |
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| Keywords: | true VOD(T-VOD) near VOD(N-VOD) cable modem code division multiple access(CDMA) consistent bit rate(CBR) variable bit rate(VBR) |
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