2008年12月22日星期一

Three Typical Monitoring Program

At present, there are three main control system of a typical program, the following were each on the strengths and weaknesses of the system.

If installed properly, the traditional security system still has a few advantages. For example, through traditional analog transmission system, CCTV image quality is very good. Moreover, there is no need after a video network, it will not be video-inch extension on the issue. However, such a system in the inferior performance of the in camera and digital video equipment management system between the coaxial cable will be laid to occupy the building expensive space. As the coaxial cable does not support IP-based applications, so. If you decide to use the full IP-based security systems, the current customer base on the need to replace coaxial cable. Analog cameras in the coaxial cable-based facilities on the basis not on the same day can not support the audio-inch transmission, and IP-based cameras to the goods. At the same time, support data, voice and video streaming signal of a variety of large graphical user interface (GUll for video surveillance, the use of hybrid systems from analog technology to the investment lP security system should be commended. Once the system is IP-based, The system will be able to use IP networks to provide all the features, including remote monitoring, however, hybrid systems, there are some disadvantages, which is mainly embodied in an excellent analog video into a video lP costs associated with these decisions at the cost of analog signal transmission line before the digital Coding, as well as the physical location of the encoding / decoding occurred in the number of times, and video quality may be adversely affected.

LP and the standardization of the network provides a good interoperability and compatibility on the network lP not prepared to reduce the long-term infrastructure costs. For the cameras and other equipment for Power over Ethernet (POE) can be installed to further reduce the cost of electricity because it is centrally managed, and reduce the need to install the signal due to the number of wires inside the camera in be coded for transmission lP, and do not need to Converted to analog signals, so saving the cost of equipment conversion. Although lP systems and networking security system has many notable advantages, but there are potential flaws. The big flaw is that the bandwidth out of consideration, lT staff present in the video do not want their products on the network. Dimension, which needs to teach lT managers to understand the different video compression technology division to help ease their doubts.

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