How does the camera work?

Principle of operation of CCTV as follows. Network cameras or analog cameras use CCD or CMOS image sensor. The image signal, analog, then the sensor is converted to digital form by an analog circuit switch-to-digital and further processed by digital circuitry built-in camera (DSP).

Hoạt động của camera

Operation of the camera

Next, for the network camera image is then compressed (or encoded) inside the camera and TV over IP (Ethernet) and images can be stored on a camera or video recorder network (NVR). For analog cameras, image is then converted back to analog conversion by the digital-to-analog images can then be transferred to an observation screen or digital video recorder (DVR) , where images are encrypted and stored.