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Surveillance everything you need to know before buying

 

Surveillance history of the development.

 

Modern surveillance systems are more complex than conventional cameras connected to monitors, which first appeared in 1960. CCTV 60s consisted mostly of black and white camera with a very low resolution, connected to a coaxial cable. Each camera was connected to the black-and-white monitor. So in order to organize the surveillance cameras of the 16 required 16 monitors. Such surveillance systems used everywhere: subway and train stations, stadiums, stores, shopping centers, government agencies, public parks, garages, etc.

 

Evolution and development of surveillance technology began to pass from the launch of the first systems in the 60s, and continues to this day. First of all, the panels were added to the switches that allow the operator to switch between cameras. Now operators can see several types of cameras on one monitor, but still you can only view one camera at the same time on the screen. In the 70s there multiplexers, VCRs and stationary cameras. Multiplexers allowed to separate the screen into multiple frames on a single monitor. VCRs allowed easy recording and copying movies.

 

Development of surveillance technology "first generation" is not initially prevented some significant problems with performance.

 

In 80 years with the implementation of recording video recorders, recorders had many problems. Video recorders, recorders can record from video surveillance cameras in a terrible by today's standards of quality. The combination of low-resolution images from cameras with very poor quality video tapes and low tech solutions means that the fuzzy image can even be used for identification purposes.

 

When using a VCR operator could not see the record of events in conjunction with the playback pictures with the cameras, and it was very time-consuming process to find and review specific events.

 

At that time there was no possibility of recording the movement, as well as view the records from a remote location.

 

Such surveillance systems were very expensive and provide only basic functionality and relative modest performance, the installation of video surveillance systems also had a high cost because it was the lack of qualified and experienced installers.

 

The next stage of development of surveillance systems (next generation), was in the mid 90s. Everywhere, introduced the latest technology, computer digital video recorders (DVR), which allowed to record images with much higher resolution than before. When implementing a digital DVR main problem has been fixed the first generation of video - Video cassette tape! Which constantly wore out, demagnetized and had a lot of deficiencies in the record, and was a constant need for user intervention.

 

Digital video can be recorded automatically and does not require user intervention. When you need to see the video, the device continues to record. Superimposed on the image date and time, and he made it very easy to analyze a large amount of information. DVRs using IP (Internet Protocol) technology enables authorized remote users to view the image, fully control the cameras and the system for local area network (LAN), wide area network (WAN) or via the Internet. With such an organization flexible access, the current generation of video surveillance cameras can be operated remotely from a control center, or in fact anywhere with internet access. Similarly, high quality digital images can be transmitted anywhere and everywhere. But not only were such a recording device upgrades, technology used in the manufacture of CCTV cameras, too, can have much more functionality.

 

Today's generation of camera PTZ - pan, tilt and zoom, have higher resolution options, a wide variety of lenses and are also able to work in almost total darkness. Audio recording is now an integral part of the surveillance system. The operator is now able to synchronize the movement of event-based video with sound, and analyze the situation. Dual streaming audio file, allowing the operator to warn of possible attacks and to protect the protected object, giving instructions to staff and to record / search / playback in the audio visual form. The next generation DDTV DVR systems are compatible with earlier camera technology, and can be more scalable and flexible, and can integrate with a wide range of other management systems such as access control and building management.

 

Surveillance of course, went a long way since 1960, it is clear that the future of video surveillance systems is safe and that the technology will continue to evolve to meet the needs of CCTV.