随着电子元器件性能的全面晋升与价钱走低，以及网络互联的普及，视频数字监控(SDVR)正全面代替传统闭路电视(CCTV)与非技术性监控和保险体系，并促进多种新技术的融会。
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结合HYDS - 4网络视频数字监控系统的数字化工作原理，详细介绍了其系统体系结构和特点。
Combining with the working principle of HYDS 4 digital video monitoring and control system based on network, the paper introduces the structure and feather of this system in details.
目前，第三代数字化网络视频监控系统，可实现对大量视频数据实时地、远距离地传输，为人们提供了直观、快捷、有效的信息。
At present, a great deal of video data could be transported timely and distantly by the third generation system. And visual, shortcut and effective information is provided for people.
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