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Origin NVR video surveillance applications in the network video technology to replace the traditional use of a better networking experience, initially mainly been used in enterprises, factories, education and other decentralized and easier wiring surveillance. Now, with the rapid spread of the network upgrade, IT and other high technology and image processing technology, as well as costs decline, so NVR and IP cameras has been rapid development, has become an inevitable choice for high definition network surveillance system currently built. Users generally refers to small-scale monitoring of the scale 80 monitoring points or less, mainly used for video surveillance within a small area to see and video storage. Since monitors smaller, generally do not set up a special monitoring center, guard room only do surveillance, collecting and recording everyday situations in the region, after the video viewing, to detect anomalies, and to achieve alarm and other functions, to achieve efficient, safe and convenient as one of the remote monitoring, as quickly and accurately deal with emergencies, be able to remotely access to the front of the video image, and the user is left for future system upgrades redundancy and flexibility to expand and upgrade. Fewer small-scale users of applications, mainly in the important area of real-time video surveillance, mainly in the doorway, entrance, stairs and interior important parts; well as for post-forensics, video storage time is usually 15-30 days. Small high-definition network video surveillance project for the new HD NVR demand characteristics are: openness, more and more market NVR supports ONVIF, PSIA and 28181 protocols or standards, standardization, openness can make the system more effective and more comprehensive. Powerful network services (support DHCP, PPPOE, FTP, DNS, DDNS, NTP, UPNP, EMAIL, IP permissions, IP searches, Alarm Center, etc.), perfect (WEB, Client, SDK), easy to achieve interoperability; simple networking, IP-based network, to build a more flexible system, reduce intermediate links, fast direct monitoring of business between the image source and the user, the application of more efficient, and more resources into the economy; wear can easily achieve a variety of network through step to achieve remote monitoring, abandon all kinds of complicated network setup, simple; flexible deployment, the networking requirements of the system is simple, flexible, and can adopt any of the nearest point of access to monitor the way the access network, constituted system; stable and reliable storage, store support center, front store two kinds of storage, and support for simple and effective application mode can significantly extend the life of the hard drive, optional support for RAID levels generally provide reliable storage solutions, so important the video data is not lost because of damage to the hard drive; easy management, NVR can achieve full network management IP transmission network and all the front-end monitoring and centralized management of the entire process, including monitoring of equipment status and parameters of view, comes with domain name service functions (ARSP), a key to enable remote monitoring; safe, dedicated embedded hardware and embedded software, safe and reliable, no viruses; perfect protection circuit, unique triple watchdog function, ensure that the equipment never crash ; easy to use, simple system to use, easy to use. Supports a variety of operating mode control keyboard, mouse, remote control, WEB, to provide desirable to use for different types of users. Can support 3G dial-up, WIFI module expansion; supports multiple web browser (IE, Chrome, Firefox, Safari) and so on. For a small network video surveillance systems currently on the market for embedded NVR can access management major 4-way, 8-way, 16-way, 24-way high-definition video, the device compact, low power consumption, support for high-definition ip camera management, recording, storage real-time decoding and display, and more concerned about the configuration flexibility, user experience, and will integrate applications such as intelligence analysis capabilities, cost-effective, easy to use, high quality, cost-effective, family, nursery, warehouse, chain stores, factories , and other small shops, the best choice for mini-network video surveillance project. Medium-sized users generally refers to the actual needs of the video surveillance points between 80 monitoring points to 500 monitoring points, the demand for video surveillance requirements can view real-time video images of all the front-end cameras, video storage time is 30 days or more, video centralized monitoring and management approach to management, remote user access needs. Medium-sized users in the field of distributed banks, schools, hospitals, public security, telecommunications, electricity, water and so on. Medium-sized user application needs the following main points: Centralized management: setting a unified monitoring and management platform in the monitoring center, the realization of all the former system, the back-end equipment for unified management. Also responsible for user rights, device status on the platform, the linkage strategy, electronic maps, alarms and operating logs centralized configuration and management; support for cluster building applications can be achieved through the establishment of a cluster expansion platform management server; centralized display, control center large screen display devices should be configured to form a mosaic screen monitor video wall or display high-definition video images; video surveillance private network, requires the establishment of an all-digital video surveillance private network, the new network can meet future expansion of data transmission and system operations, image information is clear and stable, non-blocking video data, without delay; centralized power management, due to the particularity of video surveillance system from the industry in terms of technical specifications, generally require separate dedicated power supply from the control center to introduce the total AC380V power distribution box via UPS output AC220V power is supplied to the front-end and back-end surveillance ip camera center facilities, such as switches, monitoring and management of servers and other control equipment; remote client access, remote access via PC real-time monitoring of video and video calls, etc.; forwarding function with streaming media, responsible for real-time surveillance video transmission, management, and distribution; unified surveillance video upload format, ensure that important surveillance video retrieval, comparison, management, and backup. Other requirements include extended treatment with front linkage alarm monitoring area, two-way audio transmission, system operation and maintenance graphics processing and other related functions. Medium-sized high-definition network video surveillance project requirements for new HD NVR features include: multi-screen and full-screen monitor, an IP address can be included in all front-end device management list. Single screen can simultaneously monitor 16 channels of audio and video, support for screen switching and carousels, enabling dual-stream transmission; support large-scale monitoring point management, automatic search cameras, configure various parameters, you can adjust the bandwidth, image quality, PTZ protocol, IP address and other parameters; can be controlled via the front-end software for PTZ ip camera, lighting, wiper device control, supports preset positions, cruise; supports motion detection / sensor alarm / linkage alarm and display text , audible alarm and continuous capture images; each camera can achieve full-duplex voice transmission, the center control point to manage the dialogue, can be multi-channel and multi-channel broadcasting simultaneously monitor; arm work performed automatically according to the time the policy; support manual / timer / motion / alarm recording, supports timer / motion / alarm recording run automatically according to the recording time strategy, support for multi-drive recording; supports simultaneous playback of audio and video, playback of the specified time, according to such date, the monitoring sites, monitoring host, such as search conditions for video search, local playback, remote playback; support important video files anti-delete function, improved file protection security; viable sub-level user management, different users have different levels of authority to operate, improve system security; support screen lock feature, lock screen mode, all functions of the operating limitations of software, to prevent others from illegal operations; through indicators show the working status of the ip cameras, video, alarms, etc.; when the mouse moves to the status indicator, automatic pop-up status indicator notes; remotely configure all front end equipment, including monitoring center front, all the information on the back-end equipment, configuration parameters and user permissions, etc., to achieve unified management system; may communicate with other management systems and synchronization, to maintain data consistency. NVR currently high on the market for medium-sized projects, typically using a number of IT high-tech, such as video and audio codec technology, storage technology, network technology and smart technology, can achieve high-definition video storage, centralized management, unified command, burst event handling, multi-system integration, powerful intelligent video analysis, etc., can be used individually, can also be networked to form a powerful security system, can form the core of a multi-stage management platform, up to 32 channels simultaneously access management 1080P HD video. DVR and NVR inherits the advantages of the system, such as the deployment of convenient, easy to use, storage, reliable, self-contained unit can also be used as a large sub-systems, while, NVR using new technology, abandon the traditional DVR application brought limitations, the integration of new technologies, you can dig a lot of new applications. For example with the integration of business management systems, can live on the production line, supply chain, out of storage and logistics management, especially where there is a chain of corporate offices, NVR is deployed in each branch office structure, with headquarters collaborative information at any time management site. In addition, NVR can also be combined with cloud build service-oriented systems, the new generation of NVR have sufficient resources openness is no longer a one-way flow of business units in the traditional sense, resources can be allocated on demand, can be formed by a combination of a lot of NVR as a huge pool of resources, as basic services, but also a platform for the virtual service. The future, for more diverse market and demand, NVR performance regardless of the product in terms of the breakdown products, functional diversity, etc. all will have made great progress and better segmentation of the application, will be more cost-effective high, I believe in the catalytic multiple factors, NVR will get a larger scale applications.
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