【摘要】 以准视频点播技术为背景,通过对该技术的核心要素-VoD广播协议族进行归纳、分析,并从宝塔广播协议出发,设计了一个新的数学模型———宝塔模型,并由该模型出发分析了N-VoD系统的性能与特点。该模型在一个8MHz模拟频道上传输两套数字节目,其点播最大延迟为8s,大大缩短了用户等待时间。更多还原

【Abstract】 The T-VoD technology becomes the technological focus with its interactive service mode and short delay. But it brings the big problem of that the expenses of the reconstructor for the network are costly. The N-VoD technology can order program without the network reconstructor, and this makes that the N-VoD technology is broadly applied in the CATV network. This paper, in the context of the N-VoD technology, concludes and analyses this technology’s core knowledge - VoD broadcast protocols, and makes the model of the Pagoda Broadcasting protocol.更多还原