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Closed-circuit television camera
Closed-circuit television (CCTV) cameras can produce images or recordings for surveillance〔(【引用サイトリンク】url=http://www.sourcesecurity.com/product-categories/cctv.html )〕 purposes, and can be either video cameras, or digital stills cameras. Marie Van Brittan Brown was the inventor of the CCTV camera.
== Video cameras==
Video cameras are either analogue or digital, which means that they work on the basis of sending analogue or digital signals to a storage device such as a video tape recorder or desktop computer or laptop computer.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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