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.
- Closed Circuit Television
- China Central Television
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 VHS tape; either a single VCR for each camera, a "quad VCR" that recorded four low-res images or a time-lapse recorder that handled multiple cameras. Subsequently, specialized digital video recorders (DVRs) with multiple analog inputs superseded VHS tape machines. From Analog to Digital Increasingly, digital "network cameras" are used that transmit over Ethernet or Wi-Fi and offer greater camera installation flexibility. Analog CCTV recorders have a fixed number of camera ports, whereas Wi-Fi cameras are easily added, and Ethernet ports can be expanded at minimal cost. See 960H and network camera.