closed circuit television

Japanese: closed circuit television(英語表記)closedcircuittelevision
closed circuit television

... refers to television used in the industrial field for monitoring and measurement control, but in general, the application of television technology outside the television broadcasting field is collectively called industrial television (ITV) or closed circuit television (CCTV). Currently, a wide variety of industrial television systems are in practical use, including in the fields of science such as medicine and astronomy, in the field of education such as school television, in the field of communications such as videophones and the transmission of text and still images, in the military, for surveillance applications in transportation, banks, and stores, and in door televisions in ordinary homes.

*Some of the terminology that refers to "closed circuit television" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…工業分野で監視や計測制御のために利用されるテレビジョンのことであるが,一般にはテレビ放送分野以外でのテレビ技術応用を総称して工業用テレビジョンindustrial television(ITV)とか閉回路テレビジョンclosed circuit television(CCTV)と呼んでいる。 現在では,医学,天文学などの科学分野,学校内テレビなどの教育分野,テレビ電話,文字や静止画像の伝送などの通信分野,軍事の分野,交通機関,銀行,商店などでの監視応用や一般家庭のドアテレビまで,実にさまざまな工業用テレビジョンシステムが実用化されている。…

※「closed circuit television」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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