Ceefax

Japanese: Ceefax
Ceefax

...This refers to broadcasting that aims to provide new services or expand existing services by applying multiplex transmission technology to add and transmit one or more signals to conventional broadcasting waves. In a broad sense, current color television broadcasting, which adds a color signal to black-and-white television and transmits it, and stereo broadcasting in FM broadcasting are both types of multiplex broadcasting, but in recent years, television multiplex broadcasting is a representative example. In the Broadcasting Act, television multiplex broadcasting is defined as broadcasting that transmits voice and other sounds, characters, figures, other images, or signals by superimposing them on the television broadcasting waves, and includes television audio multiplex broadcasting, which transmits voice and sound, and television text multiplex broadcasting (text broadcasting), which transmits text and figures. ...

*Some of the terminology that mentions "Ceefax" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…従来の放送電波に,多重伝送技術を応用して,一つ以上の信号を付加して伝送し,新たなサービスあるいはその拡張をねらう放送をいう。広い意味では,白黒テレビジョンに色信号を付加して伝送する現在のカラーテレビジョン放送も,FM放送におけるステレオ放送も多重放送の一種であるが,近年ではテレビジョン多重放送がその代表例である。放送法では,テレビジョン多重放送はテレビジョン放送の電波に重畳して音声その他の音響,文字,図形その他の映像,または信号を送る放送と定義し,その中には音声や音響を送るテレビ音声多重放送と文字や図形を送るテレビ文字多重放送(文字放送)とがある。…

※「Ceefax」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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