One of the things you must know when you first come into contact with security

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One of the things you must know when you first come into contact with security [Copy link]

Security equipment DVR is Digital Video Recorder (also called: Personal video recorder or PVR) - digital video recorder or digital hard disk recorder, which we usually call hard disk recorder. It is a computer system for image storage and processing, with the functions of long-term video recording, recording, remote monitoring and control of images/voices. DVR combines five functions such as video recorder, screen splitter, PTZ lens control, alarm control, network transmission, etc., and one device can replace the functions of a large number of devices in the analog monitoring system, and it is gradually gaining an advantage in price. DVR uses digital recording technology, and is far superior to analog monitoring equipment in image processing, image storage, retrieval, backup, network transmission, remote control, etc. DVR represents the development direction of TV monitoring system and is the preferred product of TV monitoring system on the market. Popular products on the market include PC platform DVR and embedded DVR. Embedded DVR has the advantages of "professionalization" in terms of stability, reliability, ease of use, etc. Embedded DVR will gradually occupy the market of PC platform DVR. PC platform DVR has advantages in versatility and scalability. It can still bear the role of management host in network video surveillance system and still has its own market share. Due to price, performance and other reasons, DVR products in the domestic market are mainly dominated by products from Greater China, including Taiwan, and South Korea. Mainland enterprises have the advantage of "Made in China", but they are almost completely dependent on foreign technology development in technology. They have not mastered the key technologies of core chip and embedded motherboard development, and their technological innovation capabilities are relatively poor. Taiwan and neighboring South Korea are stronger than mainland enterprises in this regard. At present, many foreign companies have invested in the development of multi-channel MPEG-II, MPEG-4 compression chips, and wavelet image compression chips. The emergence and application of new compression chips will bring digital network video surveillance into a new era. At the same time, with the continuous increase in storage device capacity, the continuous reduction in price, the development of new storage technology, the continuous improvement of full digital and high-definition cameras, and high-definition image standard products will be put on the market and become the new favorite of digital network video surveillance. In addition, when developing new products, companies should also pay attention to establishing unified standards through industry associations so that products from different companies can truly share data through the Internet, and should try their best to achieve seamless connection with other subsystems in the building intelligent system to achieve unified management and control of the building system.