Closed-circuit television (CCTV)

Fittings, Fixtures And Services 3(1+2)

Lesson 07 : Safety fittings-locking system and remote control

Closed-circuit television (CCTV)

Closed Circuit Television Cameras (CCTV) have become an important crime preventiovn and security measure. Cameras collect images and transfer them to a monitoring-recording device where they are available to be watched, reviewed and/or stored. It is a situational measure that enables remote surveillance of a locale.

  1. static in nature
  2. able to pan, tilt and zoom
  3. fixed
  4. redeploy able
  5. mobile
  6. can transmit analog or digital images via cable or wireless links.
  7. The images can be recorded in different ways with different implications for quality.

Closed-circuit television (CCTV) uses video cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television where the signal is not openly transmitted, though it may employ point to point (P2P), point to multipoint, or mesh wireless links. CCTV is often used for surveillance in areas that may need monitoring such as banks, casinos, airports, military installations, and convenience stores. It is also an important tool for distance education. In industrial plants, CCTV equipment may be used to observe parts of a process from a central control room, for example when the environment is not suitable for humans. CCTV systems may operate continuously or only as required to monitor a particular event. A more advanced form of CCTV, utilizing Digital Video Recorders (DVRs), provides recording for possibly many years, with a variety of quality and performance options and extra features (such as motion-detection and email alerts).

Last modified: Saturday, 11 February 2012, 11:11 AM