1. The traditional analog monitoring system
The main shortcomings of the traditional analog monitoring mode are as follows: Transmission channels are expensive to install. The system consists of camera, monitor TV wall, video recorder, control matrix, screen divider, decoder and other auxiliary equipment. It uses coaxial cable as image transmission medium, shielded twisted pair as control signal transmission medium. The system structure is complex, the monitoring center equipment is numerous, and the operation is tedious.
2. The second generation quasi-digital video surveillance system which takes the hard disk video recorder as the core
Compared with the traditional analog monitoring mode, the digital video recorder based on digital quasi-digital video surveillance system gets rid of the disadvantage of the traditional analog monitoring that cable must be laid, and has greatly simplified the system structure.
3. The third generation all-digital remote video centralized monitoring system which takes network video server as the core
The third generation all-digital remote video centralized monitoring system of CCTVMan
is a new digital monitoring mode that is based on the network, takes digital video processing technology as the core, adopts comprehensive utilization of photoelectric sensors, digital image processing, embedded computer systems, data transmission networks, automatic control and artificial intelligence technology. It not only has advantages of the second-generation quasi-digital video surveillance mode i.e. computer fast processing power, digital information anti-jamming capability, video image clarity, and it relies on the network, and really gives play to the advantages of broadband networks.