NVR is currently still in the concept and try to promote the confirmation stage. NVR is applicable to all establishments using the DVR,although there are some differences in the actual application,network facilities to improve the place with NVR more,they had no place to network rollout inconvenient to use NVR.DVR in the vast majority of applications where analog cameras,the resolution is less than or equal to d1.NVR is mainly used in distributed storage area network,ip cameras and high-resolution occasions ( megapixels ).In the long run,NVR will be more advantages than the DVR,mainly reflected in the ability to make full use of network resources,deployment simplicity and flexibility of the system,you can expect superior performance,reflecting aspects such as intelligence.It is the initial stage of NVR from technology products is not insurmountable difficulties, but because of the high maturity DVR application , and also to the primary direction of the development of the network,for example, appear DVR / NVR products,NVR has not yet completed the standardization and other reasons,NVR DVR to become a mainstream alternative to the difficulty of the last two years there,NVR and DVR will coexist for a long .
Front of the camera now subdivided products has been very skilled, diverse species , to meet the different light and dark environments , different application orientation / demand fields , while the back-end products,although not so much different complex application environments , but also appeared as the campus finance, roads, hospitals , energy , residential and other different industries backend equipment. NVR has been relatively mature After several years of development , and have customized for different customers NVR products and features appear. For example , for a safe city , the financial network systems, electronic multi-level examiners inspect ip video surveillance systems and other large projects , you can adopt platform-based NVR product , its stability , scalability , access forwarding performance , mass storage and redundancy backup performance , outstanding , high performance, high stability, high reliability , good scalability characteristics. The medium-sized ip video surveillance project for education, finance, government and enterprise units , commercial buildings , etc., may be more common on the market using the HD NVR products, mainly for users to achieve video, video storage , real-time monitoring, centralized display , remote client access , alarm functions , not only stability , image clarity, and strong management capabilities and scalable , economical and practical, warmly welcomed by the market and favor . In addition , a growing concern for the civilian market , such as shops, homes, small businesses , kindergartens and other small , mini- ip video surveillance projects, mainly for real-time monitoring of critical areas , to post evidence can be a more affordable HD NVR product , its configuration is more flexible and easier to customize the applications, easier to use ( automatic networking , zero configuration, etc. ) , and incorporates part of the intelligence analysis capabilities , high quality , cost-effective , in the system, the main realization of video, storage , real-time monitoring and management capabilities, more cost-effective for users to customize the overall system solution.
Thanks to the standardization of network monitoring process , with the same language between now NVR, ip cameras , and application systems , an image is no longer an island, but with the division of industrial cooperation situation. Despite the industry's major manufacturers are more comprehensive product line , but in the standardization of everyone seemed more open . Currently onvif, psia and domestic gb28181 is one of the typical standardized network monitoring can be said to further popularize guarantee. Storage characteristics between DVR and NVR 's professional network storage devices, both the advantages of both . For example, inherited the DVR application is simple and convenient , but also have a professional storage reliability. Support for common hard drive, reducing the cost of using and supporting simple and effective application mode can significantly extend the life of the hard drive . Optional support for a variety of general raid levels, providing highly reliable storage solutions , so the video data is not important because the hard drive is damaged and lost. NVR aid network , you can build a more flexible system that can be deployed beyond the traditional sequential pattern layer by layer , to reduce intermediate links , fast direct monitoring business between image sources and users , there is no intermediate conversion sectors , more efficient application investment of resources is also more economical. For example , to build a network -based NVR surveillance system , deploying video wall , just TV wall decoding devices connected to the network , regardless of the resources needed for real-time image or picture video playback , as long as the authorized direct access to be able to point to point , not needs , such as the middle part of the matrix , when building large-scale applications to better reflect this advantage .
NVR can be applied by means of intelligent technology allows more efficient , as follows : Intelligent Search : Allows access to the video once time-consuming red tape has become extremely easy , so events of interest pop up instantly , without concern for the time period of the video has nothing to do ; intelligent video NVR intelligent combination of features and ip cameras can achieve real-time alarm : ; : quality testing real-time intelligent alarm function regularly detect the connected NVR status of the camera image , such as lens cover , focus blur and other conditions, can be found in a timely manner and notify the user , warning area , goods protection, fighting crowds and detection ; commercial applications useful features : NVR also can achieve some commercial applications useful features , such as people counting , walking tracks drawn , human face recognition.
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