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.
该卡加上电视、计算机和宽带网络可以组成一个完整的视频采集播放系统。
This card, TV set, computer and Wide Band can comprise a full video capture and playback system.
针对地铁列车这个特殊的应用对象，开发了一个专门的数据采集网络系统。
A special data acquisition network system be developed, aiming at the special application object of subway train.
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