DVR is Digital Video Recorder - digital video recorder or digital hard disk video recorder. We are often referred to as hard disk video recorders.
It is a set of computer system image storage and processing, with the image / voice for a long time, video recording, remote monitoring and control functions, DVR is a collection of video, image processor, PTZ camera control, alarm control, network transmission and other five functions in one, replace the analog monitoring system a lot of equipment the function of a device can be, but the price has an advantage.
DVR is used in digital recording techniques in image processing, image retrieval, storage, backup, and network transmission and remote control are far better than analog monitoring equipment, DVR represents the development direction of TV monitoring system, TV monitoring system is currently on the market the first selected products.
The popular products on the market are PC platform, DVR and embedded DVR, and embedded DVR has the advantages of specialization in stability, reliability and ease of use, and embedded DVR will gradually encroach on the market of PC platform DVR. PC platform DVR has the advantages of versatility and scalability, and still has the role of management host in the network video surveillance system, and still has its own market share.
Because of the price, performance and other reasons, in the domestic market DVR products mainly including Taiwan, China and South Korea are dominant, mainland enterprises have "Chinese manufacturing advantage, technology development but technically almost entirely dependent on foreign, have mastered the key technology and core chip embedded development board the enterprise technology innovation ability is poor, Taiwan and neighboring South Korea in this regard is stronger than the mainland enterprises.
At present, there are many foreign companies invest in the development of multi MPEG-II, MPEG-4 compression chip, image and wavelet compression chip, new compression chip and application, will enable the digital video surveillance network to a new era.
At the same time, with the increasing of storage capacity, the price falls continuously, the development of new storage technologies, high definition digital camera, continuous improvement, high image quality standard products will be put into the market, become the new darling of digital video surveillance network.
In addition, enterprises in the process of developing new products should also pay attention to the establishment of a unified standard by industry associations, enterprises can make different products through the network to realize data sharing, and intelligent building system and other subsystems to achieve seamless connectivity as much as possible, to achieve unified management of building system.