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character generator
A character generator, often abbreviated as CG, is a device or software that produces static or animated text (such as news crawls and credits rolls) for keying into a video stream. Modern character generators are computer-based, and can generate graphics as well as text. (The integrated circuit, usually in the form of a PROM, that decodes a keystroke in a keyboard, and outputs a corresponding character, is also referred to as a "character generator.")
==History==
The CBS Laboratories Vidiac,〔(University of North Texas - Automatic Typographic-Quality Typesetting Techniques: A State-of-the-Art Review )〕 and the A. B. Dick 990 System, were among the earliest character generators for broadcast television. CBS Laboratories later developed the more advanced Vidifont system in preparation for the 1968 US presidential elections, where a rapid method of all-electronic character generation was required so that news outlets could identify unexpected interviewees on the spot.〔 A similar generator using analogue electronics, Anchor, was developed by the BBC in 1970〔(BBC Engineering, Number 84, October 1970, pp15-19 )〕 and used in the general election later that year.〔(BBC Election 1970 - Part 1, 42:49 )〕〔(BBC Election 1970 - Part 1, 43:24 )〕
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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