It is a set of computer system for image storage and processing. It has the function of long time recording, recording, remote monitoring and control of image / voice. The DVR integrates video recorder, picture splitter, PTZ camera control, alarm control, network transmission And other five functions in one, with a device that can replace the analog monitoring system a lot of equipment, but also gradually take advantage of the price.
DVR uses digital recording technology, and is far superior to analog monitoring equipment in image processing, image storage, retrieval, backup, network transmission and remote control. The DVR represents the development direction of the television monitoring system and is currently on the market TV monitoring system of choice for the product. Generally divided into: hard disk recorders, PC-based hard disk recorders, embedded hard disk recorders and so on.