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介绍了一种基于IP骨干网的中心式VOD视频点播结构,并与分布式结构进行了比较,指出了它的主要优缺点。讨论了中心式VOD系统所面临的若干关键技术,最后简述了VODoverIP的操作过程。
A central VOD video on demand structure based on IP backbone is introduced and compared with distributed architecture. Its main advantages and disadvantages are pointed out. Discusses some key technologies that the central VOD system faces, and finally summarizes the operation of VODoverIP.