Video surveillance technology through which stages of development?

With the development of society, technological advances, video surveillance technology is more and more widely used, in general, the development of video surveillance has gone through the following three phases:

The first phase: the late 1970s to the mid-1990s, this phase of the closed-circuit television monitoring system is the main one, that is, the first generation of analog television monitoring system. Its transmission medium is video cable. Analog processing by the control host. Mainly used in banks, government agencies and other high-grade places. Sprouting stage (1979-1983); the beginning of the stage (1984-1996)

The second stage, the mid-1990s to the end of the 1990s, based on the PC card-based video surveillance system, this stage is also known as the semi-digital era by industry insiders. The transmission medium is still the video cable. By the multimedia control host or hard disk recording host (DVR) for digital processing and storage. This stage of the application is also mostly limited to the higher level of security requirements of the place. Initial development stage (1997-2004)

The third stage, the late nineties to the present, embedded technology as the basis for the network, communications technology as a platform for intelligent image analysis as a feature of the network video surveillance system is mainly, since then, the development of network video surveillance has also entered the digital age. The application of network video surveillance is no longer limited to security protection, and gradually also be used for telecommuting, telemedicine, distance learning and other fields.

Video surveillance technology development has experienced analog video surveillance, semi-digital monitoring, IP digital monitoring three stages. Digitalization, networking is the 21st century features of the times, the digitalization of video surveillance is the inevitable trend of monitoring technology.