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Each subnet NVR has a unique IP address,control and management of the device via a network connection convenience (IP address ) , that is, by IP address recognition , management, and control the video source is connected to the NVR , so its just a simple IP networking connection , add a device only need to add an IP address , which greatly facilitates the simulation of the original system upgrades and other networks demand . IP networking is the characteristics of the NVR , but due to poor domestic IP address resources,the current domestic economic broadband (ADSL, cable broadband , etc. ) are using dynamic IP mode of access , which makes NVR access issues need to be resolved , NVR can basically ways to support the use of the domain name DDNS (Dynamic IP), if the NVR does not support domain name resolution , then the need for additional expensive network cost. As the work of NVR may not need an external computer , the NVR can automatically access it is necessary to separate , otherwise a NVR to configure a computer to dial-up is meaningless NVR. At present, NVRs basically are able to achieve this functionality. NVR networking has many advantages , combined with the central control management software and server mode can achieve more network applications. NVR with conventional devices do not have many features , specific performance is as follows : the multi-channel , network transmission , recording and playback features such as a simple integrated network , this is the current H264 in terms of network-based DVR is also very easy to implement, but the basic functions of the two products have different results in different applications of the current poor network performance simulation stage for the first generation of devices, NVR can provide a low cost solution ; NVR network technology , can achieve long as the Internet where you can view the screen , using the matching decoder does not need computer equipment can be transmitted directly to the TV wall , etc. browsing, great cost savings remote monitoring ; NVR multi- protocol support , and computer equipment for the perfect combination of form larger systems integration network , complete the digitization process. NVR using open hardware and software platforms and standard or universal interface protocol , a strong system scalability , the ability of future all-digital , network-based, systematic, multi-channel resource sharing system convergence. CCTV equipment is the best solution to the current transition from analog to digital . Deeper view, video networking, systems integration problem is not just video transmission , it represents the development trend of future applications and information exchange network video applications , from a deeper level of interactive content , has broad the development potential is one of the core content of future 3G, broadband services . So to be sure, with the continuous development of digital technology and network technology , NVR applications in the field of video will be more extended . NVR is a kind of audio and video data coding and complete network transmission equipment , enabling remote monitoring function. Some people say , "Now is not enough network bandwidth , using Optical and fiber for long-distance transmission , and video image quality is better than the network transmission speed transmission ." However, the cost of laying fiber optic expensive and complex wiring works , so many customers and contractors unbearable. Due to the popularity of computer networks, there is a network where you can build a network monitoring system, greatly reducing installation costs . Network monitoring is also not subject to time and place , at any time demand monitoring, viewing the image can be selectively designated place , without the need to watch the image is not transmitted , saving network bandwidth resources. NVR can be timely , large amounts of information automatically extracted from the video stream , this information can be transmitted , stored , retrieved , stored off-site , multi-machine backup storage . You can transfer images to make a specific event occurs only when the network cameras can be programmed . NVR uses advanced digital compression technology, digital signal transmission attenuation, quality is guaranteed. The analog video signals over a long distance transmission , the signal will be attenuated , you need to configure the video amplifier compensation . NVR uses an embedded operating system, hardware using high-performance chip , stable. Use of NVR converts the video signal into a digital signal network cameras at traffic inconvenience , wiring a difficult situation , you can set up a wireless LAN to send digital video signals to the monitoring center , and then published to the internet for far by the monitoring center Watch the end of the administration . Advantages of wireless LAN is convenient networking , short cycle, low investment, flexible structure.
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NVR, network cameras, network monitoring,
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