Video surveillance has been one of the hottest application security technology, with its intuitive, convenient, content rich and is widely used Rong firms, banks, customs, airports, highways, shopping malls, hospitals, schools, offices, social areas, family and other occasions. Integrated intelligence level and pace of development of video surveillance systems, but also directly reflects the technical status of the different stages of electronics and communications.
　　Before television monitoring system for digital intelligent, analog TV images it is widely used in security monitoring, production control and other occasions. Video surveillance generally use analog transmission, the use of video cable, transmission interval can not be too far away, is mainly used to monitor a small area, the monitoring image generally only in control of the central view, pure analog video TV monitor is not suitable for intensive intelligence cooperation Governance It needs.
　　Later, the PC-based multimedia monitor followed digital video compression technology has become more sophisticated, the popularity of computer, create the preconditions for the PC-based multimedia monitor. In the remote monitoring site, there are a number of cameras, all kinds of detection, alarm sensor and data devices, through their respective transmission lines, the Department received a multimedia monitor terminal PC, via a communication network, one or more of these information to the monitor Central. PC-based multimedia surveillance system more powerful, but chaos is not good enough; high-power, the high cost, complex structure, at the same time, open software is not good, plus you do not specify the scale in the Shanghai system software interfaces for PC the agreement which led to duplication of development, transport chaos and poor integration more difficult, etc., which requires can be more chaos and to improve their predecessors intelligent digital devices replace traditional monitoring equipment and network data transmission, so, based on remote video surveillance system Web services emerged. Based on embedded Web server technology for remote network video surveillance main principle is embedded video host built-in Web server, embedded real-time operating system.
　　After the cameras transmitted video signal is digitized by the efficient compression chip compression, transfer to the embedded video host built-in Web server via the internal bus. Users on the network can view the camera images directly on the embedded video host browser, authorized users can also control the camera PTZ camera movement or system configuration for remote manipulation.
　　Because the video compression and Web functionality into a very small embedded video equipment can be directly connected to the Ethernet, to plug-and-see, and to cut a variety of complex cable, installation convenient (just set up an IP address ), users do not need to use special software, the browser can only watch.
　　TV monitoring system as a new "darling" of video surveillance systems, from the current development situation, which is bound to a glorious future stardom, at the same time, with the popularity of broadband networks, network video surveillance has become a new surveillance direction, but also makes the expensive digital surveillance equipment and gradually become popular.