IP surveillance front-end noun explanation

1. IP-CAMERA
IP-CAMERA is a digital video device integrating the functions of a video server and a camera; IP-CAMERA network cameras generally have digital cameras and recording devices with built-in Web services, which are directly connected to Ethernet (wired and wireless). Users can watch and listen to the video and sound transmitted by the network camera through a standard Web browser.

2. Video server (DVS)
Using digital compression algorithm to achieve digital compression of audio and video information and network transmission and control equipment. The video server is generally an embedded video server device. The hardware design of the embedded CPU is small and the structure is convenient. Generally, there are 1, 2, and 4 audio and video inputs, and some can implement two-way intercom functions. At present, some DVS devices can also have a built-in hard disk.

3. Digital Video Recorder (DVR)

DVR is Digital Video

Recorder, digital video recorder or digital hard disk recorder, we are traditionally called the hard disk recorder. The digital storage media combined with the standard interface uses digital compression algorithms to achieve digital recording, monitoring and playback of audio and video information, and can be equipped with system control functions of video equipment or video network transmission and monitoring equipment (generally with unique Function control panel). At present, South Korea and Taiwan DVR products occupy a high market share in the global market, including PC industrial control type and embedded type. There are more PCs with high number of channels and more embedded with low number of channels. Korea is dominated by PC, and Taiwan is dominated by low-channel embedded. DVRs in mainland China are also available in PC and embedded styles. The previous DVR did not have the networking function, and mainly used local monitoring. According to the requirements of users and the development of technology, many manufacturers of DVR devices also have networking capabilities. According to the requirements of users, DVRs with networking functions generally view and store images in D1 format locally and upload images to the center. It is in CIF format. Generally, the DVR input does not exceed 16 channels. Try not to allow the DVR to work in uninterrupted video recording and network transmission applications.