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Closed-circuit television
/klˈəʊzdsˈɜːkɪt tˈɛlɪvˌɪʒən/
/klˈoʊzdsˈɜːkɪt tˈɛlɪvˌɪʒən/Closed-circuit television
01
闭路电视
a system in which a number of cameras send their feed to television sets to protect a place and its occupants from crime
What is "closed-circuit television"?
Closed-circuit television (CCTV) is a system of video cameras used to monitor and record specific areas for security and surveillance purposes. Unlike broadcast television, CCTV transmits video signals to a limited set of monitors, usually within the same building or network, allowing only authorized viewers to see the footage. CCTV is commonly used in places like businesses, public spaces, and homes to deter crime, monitor activities, and enhance safety by providing real-time observation and recording of events.
例子
The closed-circuit television system captured clear footage of the intruder breaking into the store.
The office building upgraded its closed-circuit television network to cover all entrances and hallways.
The bank installed closed-circuit television cameras to monitor all transactions and enhance security.
Hospitals use closed-circuit television to keep an eye on critical areas and ensure patient safety.
During the event, security personnel monitored the crowd using closed-circuit television feeds.
