模拟视频监控系统中,存储介质是磁带,通过时滞的技术来满足监控录像要求,进入数码监控以后,存储介质是硬盘,相对于磁带的顺序读写方式,硬盘的随机存储读写方式对录像资料的管理更加有效、更加方便。存储介质的革命使得监控行业走入了数码监控时期,其代表的产品是硬盘录像机(DVR)。 Analog video surveillance system, the storage medium is a tape, through the technology to meet the monitoring delay video recording requirements, into the digital monitoring, the storage medium is the hard disk, relative to the tape sequential read and write mode, the hard disk random access to read and write video Data management more effective and more convenient. The revolution in storage media has brought the surveillance industry to the digital surveillance phase, with products represented by hard disk recorders (DVRs).