Surveillance Camera Development Overview and Trends

CCTV monitoring system is an important part of the security technology prevention system. It is an advanced comprehensive system with strong prevention capability. It can be directly monitored by a remote control camera and its auxiliary equipment (lens, head, etc.) All the conditions of the site can also be linked with anti-theft alarm systems and other security technology protection systems to make it more powerful.

The first stage: From the late 1970s to the mid-1990s, this stage was dominated by closed-circuit television monitoring system (CCTV), which was the first generation of analog TV monitoring system. The first generation was a VCR (VideoCassetteRecorders) cassette recorder. A video recorder (or VCR for short) is a video recorder with an active video cassette that carries tapes to record the sound and video of a television broadcast program for later playback. In about 2000, it was basically eliminated and replaced by a DVD player.

CCTV monitoring system is an important part of the security technology prevention system. It is an advanced comprehensive system with strong prevention capability. It can be directly monitored by a remote control camera and its auxiliary equipment (lens, head, etc.) All the conditions of the site can also be linked with anti-theft alarm systems and other security technology protection systems to make it more powerful. The technical requirements of the CCTV surveillance system are mainly: the definition of the camera, the transmission bandwidth of the system, the signal-to-noise ratio of the video signal, the format of the television signal, and the camera. Its transmission medium is a video cable. The simulation is handled by the control host. Mainly used in banks, government agencies and other high-end places.

The second stage, from the mid-1990s to the end of the 1990s, was based on a PC-based card-based video surveillance system, which was also referred to by the industry as a semi-digital era. Its transmission medium is still a video cable. Digital processing and storage by the multimedia control host or DVR. The application of this stage is also limited to places with higher requirements for safety. The second-generation DVR (Digital Video Recorder), which is a digital video recorder, replaces a conventional cassette tape and uses a hard disk recording, so it is often referred to as a hard disk recorder.

DVR adopts digital recording technology and is far superior to analog monitoring equipment in image processing, image storage, retrieval, backup, network transmission, remote control, etc. DVR represents the development direction of TV monitoring system and is a TV on the market. The preferred product of the monitoring system. Generally divided into: hard disk recorders, PC-type hard disk recorders, embedded hard disk recorders and so on.

The third stage, from the end of the 1990s to the present, is based on embedded technology, network, communication technology as the platform, and network video surveillance system featuring intelligent image analysis. Since then, the development of network video surveillance has also entered. Digital Age. The application of network video surveillance is no longer limited to security protection. It has gradually been used in remote offices, telemedicine, and distance learning. To the third generation - network video surveillance systems, also known as IP surveillance systems.

Whether it is a solution consisting of an analog camera plus a video server, a solution consisting of a network camera alone, or a solution consisting of a combination of both, IP surveillance has proven to be an attractive solution. In more and more original industry applications, this revolutionary technology is gradually replacing the traditional monitoring system, while further improving safety while reducing costs; and in many new application areas, it is still the first Once used, it has created and inspired many new markets.