- The definition of CCTV refers to closed-circuit television, or the use of video cameras to transmit images to a specific limited number of televisions on the same network or circuit.
When a security system allows you to monitor what is going on in a home on a monitor on your desk, this is an example of CCTV.
cctv - Computer Definition
A private television system involving one or more cameras connected to one or more monitors for security, surveillance, law enforcement, and general purpose monitoring applications. Unlike public broadcast TV, CCTV is a closed system in intended for private use.
(Closed Circuit TV) A self-contained surveillance system comprising cameras, recorders and displays for monitoring activities in a store or company. Earlier analog CCTV systems used a single VHS tape machine for each camera, specialized "quad" VCRs that recorded four low-resolution images or time-lapse recorders that handled multiple cameras. Although analog cameras are still used, VHS gave way to specialized digital video recorders (DVRs) with multiple composite video inputs. Increasingly, digital "network cameras" are used which transmit over an inhouse Ethernet or Wi-Fi network. The network camera provides greater installation flexibility (for details, see network camera).