In The Video Frequency Server The Signal Flows Research And Application

The television supervisory system is a weak electricity system important constituent. The traditional television supervisory system only can carry on the surveillance in the scene, thus forms the independent closed circuit television supervisory system. It cannot in compare in the long-distance range to transmit the image, at the same time is unable the prompt accurate understanding scene actual situation. Along with social economy and science and technology rapid development, specially computer network development, the people more and more are also high to the security technology guard requirement. The computer system application, the popularization, the network communication technology and the image compression processing technology fast development, enables the television supervisory system to be able to use newest computer technology, the communication technology and the imagery processing technology implements. Through the computer network transmission digital image, may provide the highly effective feasible solution for the implementation long-distance image monitoring. The long-distance television supervisory system becomes the television supervisory system a constituent. The wide band technology and the digital video frequency technology development, has provided the more perfect solution for the long-distance monitoring. Uses digitized monitoring technology which the digital video frequency monitoring module and the control module unifies, has provided the brand-new idea for the long-distance monitoring and a broader space, has realized based on TCP/IP point-to-point, to multi- spots, multi- spots to multi- spots .This article mainly elaborated the long-distance television supervisory system core technology, including video frequency server correlation compression technology, imagery processing technology, network transmission technology. And in the union long-distance television supervisory system application, analyzes the related imagery processing, the memory as well as the long-distance control technical content.This article has first analyzed the traditional television supervisory system and the long-distance television supervisory system at present technological development present situation. Then, has quoted the long-distance television supervisory system connotation and the technology core theory with emphasis. Including the image compression technology, the network transmission technology, inserts the type equipment technology and so on.This article proposed a conclusion, in long-distance television supervisory system, video frequency server application. Not only is restricted in the video frequency to the front-end equipment, but also contains other some simulations and the digital signal, for example: Audio frequency, temperature, humidity, voltage and so on. Rear-end the equipment selects the digital processing method, may carry on the nimble transmission to the signal, save and recovers. Expanded the television supervisory system application scope.Again analyzes the long-distance control according to the television supervisory system specialized angle the specification. As well as the control technology must and the image technology full union application. Finally enumerated the video frequency server to apply in the actual project basic system skeleton. Finally proposed myself to its some forecasts.