We are asked quite often about the security camera CCD (Charged Coupled Device) and the CMOS or Complementary Metal Oxide Semiconductor.  In the following article we’ll discuss how a digital video system actually works and what importance a security camera CCD has within this system.

First let’s describe a digital video security and surveillance system.  It normally consists of three components; the camera(s), the Digital Video Recorder, and a monitor(s).  The camera’s function in this system is to capture a video image created by light reflectance and transform it into an electronic image based on electricity.  Both live and recorded material is played back by the DVR and may be seen by watching the monitor.