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一、城市视频监控的发展最早的视频监控系统是模拟视频监控系统,其特点是从摄像机到控制主机再到录像机、监视器,全部以模拟视频信号进行传输与存储。而控制信号是以数字信号进行的。稍候的视频监控系统是以多媒体计算机系统或以DVR为控制核心的数字视频监控系统,系统从摄像机到控制主机、控制主机到监视器是以模拟视频信号进行传输;控制信号是以数字信号
First, the development of urban video surveillance The earliest video surveillance system is an analog video surveillance system, which features from the camera to the control panel and then to the recorder, monitor, all with analog video signal transmission and storage. The control signal is a digital signal. Awaiting video surveillance system is a multimedia computer system or DVR as the core of the digital video surveillance system, the system from the camera to the control panel, the control panel to the monitor is based on analog video signal transmission; control signal is a digital signal