DVR网络化发展已成必然趋势The network development of DVR has become an inevitable trend

　　DVR是目前视频监控系统中的重要组成部分，从各方面看均比较成熟，已经广泛应用于各个领域，成为视频监控系统不可或缺的部分，随着整个监控行业向网络化和智能化方向的发展，作为基础的数字化手段也得到了快速发展。DVR从诞生之初将监控录像存储系统的模拟时代带入到了数字化时代，再发展到今天，DVR已经不仅仅承担着最基本的控制、记录、输出显示、查询回放等重要任务，还需要逐步满足市场新的需要。
DVR is an important part of video monitoring system. It is mature in all aspects. It has been widely used in various fields. It has become an indispensable part of video monitoring system. With the development of the network and intelligent direction of the whole monitoring and control industry, the digital means as a basis have also been developed rapidly. DVR from the beginning of the birth of the monitoring video storage system simulation era into the digital era, and to today, DVR has not only undertook the most basic control, record, output display, query replay and other important tasks, but also need to gradually meet the new needs of the market.
 

　　从目前的市场来看，DVR的网络化已经得到普及，仍然保持超过7%的年均复合成长率，逐步得到快速发展的前端设备也正在发生变化。随着国内网络建设基础逐步完善，网络带宽已经得到大幅提升。目前的ADSL宽带在中国的普及率已经达到了21%，沿海发达地区的建筑中都已将千兆网络作为基础设施来建设，光纤线路租赁费也大幅度下调;网络技术的发展为DVR设备联网，集中管理提供了成熟的条件。通过IP网络，所有接入网络的设备都可以进行统一管理、更多的用户可以通过网络远程浏览到监控点的视频。
From the current market point of view, the network of DVR has been popularized, still remains over 7% of the annual average growth rate, and the rapid development of the front-end equipment is also changing. With the gradual improvement of the domestic network construction foundation, the network bandwidth has been greatly improved. At present, the popularity rate of ADSL broadband in China has reached 21%. In the buildings in the developed coastal areas, the Gigabit network has been built as a infrastructure, and the rental fee of optical fiber lines has been greatly reduced. The development of network technology has provided a mature condition for the network of DVR equipment and centralized management. Through the IP network, all devices connected to the network can be managed uniformly, and more users can browse the video of monitoring points remotely through the network.
 

　　网络化已成为安防技术创新成为了市场上新的焦点，网络化的特点必然要求新一代DVR产品具备更多的网络功能和更强的性能。这也是DVR厂商面临的一个挑战。监控市场面对的公安、金融、教育、能源等主要行业用户对网络化监控的需求也已成为主流。目前市场上主流的DVR在对TCP/IP协议族的支持和动态地址支持等方面做了很多改进，并支持UPnP网络穿透、远程管理和远程访问。
Network has become the new focus of the security technology innovation in the market. The characteristics of the network inevitably require a new generation of DVR products with more network functions and stronger performance. This is also a challenge for DVR vendors. The demand for networked monitoring has also become the mainstream in the main industries such as public security, finance, education and energy. At present, the mainstream DVR in the market has made a lot of improvements on the support of the TCP/IP protocol family and the dynamic address support, and supports the UPnP network penetration, remote management and remote access.