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Monitoring system is one of the largest security system applications, now available in more appropriate site monitoring system is a handheld video communication equipment, video surveillance is now mainstream. From the earliest analog monitor to a few years ago to the current hot digital surveillance video surveillance network in the ascendant, it has undergone enormous changes. IP technology in the progressive unification of global Today, we have a need to revisit the history of video surveillance systems. From a technical point of view, the development of video surveillance systems into a first-generation analog video surveillance systems (CCTV), the second generation based on "PC + Multimedia Card" Digital Video Surveillance System (DVR), the third generation of IP-based network video surveillance Systems (IPVS). The first generation of the traditional analog CCTV surveillance system depends on (CCTV): dependency cameras, cables, video recorders and monitors and other special equipment. For example, a coaxial cable through a dedicated camera output video signal. Cable connected to a dedicated analog video devices, such as video Quad, matrix switchers, cassette recorders (VCR) and video monitors. There are a lot of analog CCTV limitations: limited ability to monitor only supports local control, analog video cable transmission by cable length and limiting amplifier. Scalable systems typically limited by the video Quad, and the switch matrix input capacity constraints. Recording heavy user load must be removed or replaced with a new tape from a VCR to save, and the tape is easy to lost, stolen or accidentally erased. Video quality is not high is a major limiting factor. Recording quality decreases with increasing the number of copies. The second generation of the current "analog - digital" monitoring system (DVR): "analog - digital" monitoring system based on Digital Video Recorder DVR core half analog - semi-digital solutions, from cameras to DVR still using coaxial cable output video signal, support through DVR recording and playback, and support for IP network access is limited, due to the DVR product variety, there is no standard, so this generation system is a closed system, non-standard, DVR systems, there are still a lot of limitations. Complex wiring "Analog - Digital" programs still need to be installed separately on each camera video cable, resulting in wiring complexity. Limited scalability limitations are a typical DVR can only extend 32 cameras. Limited manageability you need an external server and management software to control multiple DVR or monitoring point. Limited remote monitoring / control capability you can not access any camera from any client. You can only indirect access via DVR cameras. Disk failure risk compared with RAID redundancy and tape, "analog - digital" video program is not protected, easy to lose. Complete IP video surveillance system IPVS Third Generation Future: Full IP video surveillance system, compared with the previous two programs there are significant differences. Advantages of the system is a camera built-in Web server and Ethernet ports directly. These cameras generate JPEG or MPEG4 data file, available from any authorized client access from anywhere in the network, monitor, record and print, instead of generating a continuous analog video signal in the form of images. Full IP video surveillance system is its great advantage. Simplicity - all the cameras are connected to the network via a simple, cost-effective wired or wireless Ethernet, allowing you to leverage existing LAN infrastructure. You can use Category 5 network cable or wireless networks transmit image from the camera and a horizontal, vertical, zoom (PTZ) control commands (or even directly via Ethernet for). Powerful central control - a set of industry-standard servers and control management application software can run the entire monitoring system. Easy to upgrade and fully scalable - Easily add more cameras. Central server will be able to upgrade to a faster processor convenience, larger capacity disk drives and greater bandwidth. Full remote monitoring - any authorized client can directly access any camera. You can also access monitoring images through a central server. Rugged redundant memory - which can use SCSI, RAID and tape backup storage failure affecting permanent protection monitoring image from the hard drive. Security system monitoring system development so far, in addition to technological innovation monitoring, surveillance products have begun with other products to form a powerful security monitoring system, which will be monitored using electronic fence surrounded the area enclosed area, the electronic fence with a blocking and alarm systems, is a fence more active intrusion prevention, intrusion attempts made on the back, repel intruders, delay the invasion of time, and do not threaten people's lives, if someone intrusion, the system starts an alarm and monitoring systems also monitor, and the invasion of the signal sent to the security services surveillance equipment to ensure the management staff to keep abreast of the situation the alarm region, to handle it quickly. [1]