Closed-circuit television
From The Art and Popular Culture Encyclopedia
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| + | "The [[telescreen]] received and transmitted simultaneously [...] there was of course no way of knowing whether you were being [[watched]] at any given moment. How often, or on what system, the [[Thought Police]] plugged in on any individual wire was guesswork. It was even conceivable that they watched everybody all the time. But at any rate they could plug in your wire whenever they wanted to. You had to live--did live, from habit that became instinct--in the assumption that every sound you made was overheard, and, except in darkness, every movement scrutinized."--''[[Nineteen Eighty-Four]]'' (1949) by George Orwell | ||
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| + | "''[[The Secret Cinema]]'' (1968) is the story of a young woman who is being [[Hidden camera|secretly filmed]] by her boyfriend and whose [[daily life]] is shown in a hipster [[movie theater]] in the city, a fact she discovers at the end of the film." --Sholem Stein | ||
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| - | '''Closed-circuit television''' ('''CCTV''') is the use of [[video camera]]s to transmit signal to a specific, limited set of monitors. It differs from [[broadcast television]] in that the signal is not openly transmitted, though it may employ point to point wireless links. CCTV is often used for [[surveillance]] in areas that may need monitoring such as [[bank]]s, [[casino]]s, [[airport]]s, military installations and convenience stores. Increasing use of CCTV in public places has caused debate over public [[surveillance]] versus [[privacy]]. People can also buy consumer CCTV Systems for personal, private or commercial use. More advanced form of CCTV, utilising [[Digital Video Recorders]] (DVR), provide recording for possibly many years, with a variety of quality and performance options and extra features (such as motion-detection and email alerts). In industrial plants, [[CCTV]] equipment may be used to observe parts of a process from a central control room; when, for example, the environment is not comfortable for humans. CCTV systems may operate continuously or only as required to monitor a particular event. | + | '''Closed-circuit television''' ('''CCTV'''), also known as '''video surveillance''', is the use of [[video camera]]s to transmit a signal to a specific place, on a limited set of [[monitor]]s. It differs from [[broadcast television]] in that the signal is not openly transmitted, though it may employ point-to-point (P2P), point-to-multipoint (P2MP), or [[Mesh networking|mesh]] wired or [[Wireless|wireless links]]. Even though almost all video cameras fit this definition, the term is most often applied to those used for [[surveillance]] in areas that require additional security. |
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| + | == See also == | ||
| + | * [[Closed Circuit (film)]] | ||
| + | * [[Look (2007 film) ]] | ||
| + | * [[List of films featuring surveillance]] | ||
| + | * [[Hidden camera]] | ||
| + | * [[Secret photography]] | ||
| + | * [[One-way mirror]] | ||
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"The telescreen received and transmitted simultaneously [...] there was of course no way of knowing whether you were being watched at any given moment. How often, or on what system, the Thought Police plugged in on any individual wire was guesswork. It was even conceivable that they watched everybody all the time. But at any rate they could plug in your wire whenever they wanted to. You had to live--did live, from habit that became instinct--in the assumption that every sound you made was overheard, and, except in darkness, every movement scrutinized."--Nineteen Eighty-Four (1949) by George Orwell "The Secret Cinema (1968) is the story of a young woman who is being secretly filmed by her boyfriend and whose daily life is shown in a hipster movie theater in the city, a fact she discovers at the end of the film." --Sholem Stein |
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Closed-circuit television (CCTV), also known as video surveillance, is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point-to-point (P2P), point-to-multipoint (P2MP), or mesh wired or wireless links. Even though almost all video cameras fit this definition, the term is most often applied to those used for surveillance in areas that require additional security.
See also
- Closed Circuit (film)
- Look (2007 film)
- List of films featuring surveillance
- Hidden camera
- Secret photography
- One-way mirror
