A video-on-demand control method, customer terminal equipment and switching control device
A control method and video-on-demand technology, which can be used in TV, pulse-modulated TV signal transmission, two-way working systems, etc., and can solve problems such as occupying server resources and bandwidth.
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[0031] The embodiment of the present invention provides an on-demand control method that comprehensively utilizes unicast technology and multicast / broadcast technology, realizes video-on-demand services that users watch on demand, and reduces the cost of servers and network bandwidth at the same time. application as an example.
[0032] The implementation principle of the embodiment of the present invention is shown in Figure 3, assuming that the nVOD server at the head end outputs n (n>=1) multicast channels of video programs, and on each multicast channel, the video programs are broadcast in the form of IP multicast After being sent to the network, each multicast channel plays a video program in a loop, and the start times of the n channels are sequentially staggered for a certain period of time. The network can be a metropolitan area network of a city, or a backbone network between cities, or can be directly linked without network equipment. The client device joins a certa...
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