The difference between HD network cameras and analog cameras

First, analog camera

Analog cameras are front-end video capture devices. Analog cameras output analog video signals. An analog video signal generated by a video capture device can be converted into a digital signal by an encoder and stored in a computer.

The video signal captured by the analog video camera must be converted to a digital mode by a specific video capture card, and then compressed before it can be converted to a computer. The video signal can be transmitted in one direction, connected to a monitor or a hard disk recorder for monitoring and Video. Generally better analog cameras have color resolutions greater than 480 lines, and analog cameras with black and white resolutions of 570 lines or more, with image pixels above 380,000 points.

Second, high-definition network camera

High-definition network cameras are professional video surveillance cameras applied in the field of surveillance in recent years. In addition to the image capture capabilities of traditional cameras, digital compression controllers and Web-based operating systems (including Web servers) are built into the machine. FTP servers, etc.) enable the video data to be compressed and encrypted and then placed in any location with an IP network interface to operate independently and be transmitted to end users via a network (LAN, Internet, or wireless network), while remote users can Use a standard web browser or client software on your PC to access the webcam and monitor the target site in real time. The current mainstream HD network cameras have more than one million pixels and the resolution can reach 720P (1280*720) or 1080P (1920*1080).

With the rapid development of network technology in the information age, the emergence of high-definition network cameras is the security industry is also the trend of the times, for the monitoring system, the fluency and clarity of the screen is very important, the emergence of "high-definition" is no doubt satisfied People's needs are also one of the important factors that have become the mainstream of development. Compared with traditional analog monitoring equipment, HD network cameras are more convenient to install and lower installation and construction costs. In addition, network transmission is convenient and fast, and monitoring video images can be in the command center of video surveillance or the sub-centers of video surveillance. The free switch allows the overall monitoring management and monitoring efforts have been fully enhanced. In today's high-definition era, the network camera's high-definition technology determines its direction of development, will gradually replace the analog camera, become the mainstream of monitoring!