CCTV full form Closed Circuit Television
CCTV is a TV system in which signals are not
publicly distributed but are monitored, primarily for surveillance and security
purposes.
CCTV relies on strategic placement of cameras,
and observation of the camera's input on monitors somewhere. Because the
cameras communicate with monitors and/or video recorders across private coaxial
cable runs or wireless communication links, they gain the designation
"closed-circuit" to indicate that access to their content is limited
by design only to those able to see it.
Older CCTV systems used small, low-resolution
black and white monitors with no interactive capabilities. Modern CCTV displays
can be color, high-resolution displays and can include the ability to zoom in
on an image or track something (or someone) among their features. Talk CCTV
allows an overseer to speak to people within range of the camera's associated
speakers.
CCTV is commonly used for a variety of
purposes, including:
·
Maintaining perimeter
security in medium- to high-secure areas and installations.
·
Observing behavior of
incarcerated inmates and potentially dangerous patients in medical facilities.
·
Traffic monitoring.
·
Overseeing locations
that would be hazardous to a human, for example, highly radioactive or toxic
industrial environments.
·
Building and grounds
security.
·
Obtaining a visual
record of activities in situations where it is necessary to maintain proper
security or access controls (for example, in a diamond cutting or sorting
operation; in banks, casinos, or airports).
CCTV is finding increasing use in
law-enforcement, for everything from traffic observation (and automated
ticketing) to observation of high-crime areas or neighborhoods. Such use of
CCTV technology has fueled privacy concerns in many parts of the world,
particularly in those areas in the UK and Europe where it has become a routine
part of police procedure.
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