提出一种数字窄播系统的信息组播方案。
An implementation scheme of digital narrowcast system was presented in this paper.
论述了组播传输技术的原理和相关的路由协议，设计了一个视频信息的采集系统，分析了实时视频信息组播传输网络。
The paper describes the principle of multicast and its route protocol, designs a system of collecting video data, and analyses a network of real time video data transmission.
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