Why choose a digital recorder?
During the last decade, microprocessor based (digital) technology has made major advances. Processors, hard drives, and computer memory are continuing to increase in speed and ability. In the surveillance industry, these advances have made it possible for recording digital video. A Digital Video Recorder (DVR) retrieves the video from a security camera, multiplexer, or other source, and converts the signal from analog to digital. The digitized video data is then compressed and stored on the DVR s hard drive. Video compression (making the data size smaller) allows the digitized video to be stored efficiently. The process of storing the video data on the DVR hard drive is similar to the way your desk top computer stores a word processor or other data file. The file (video image) is marked when stored so the user has quick access to it at a later time. Because the DVR operates like a computer, retrieval of data (video) is very fast. A search by event, time and date, or by camera, happens
