Contrast and brightness control for a television receiver with teletext
作者： Choi Byeong-Yong
DOI:
关键词: Teletext 、 Microcomputer 、 Computer science 、 Computer graphics (images) 、 Pulse-width modulation 、 Contrast (vision) 、 Brightness
摘要: Disclosed is a circuit for commonly controlling the contrast and brightness of both TV TTX pictures in receiver with TTX. A microcomputer processes user's key-input or to generate PWM pulses, which are integrated so as simultaneously control pictures, one selectively applied CRT driver 7 drive display.
lens.org 参考文章(8)
Wilhelmus J. Christis, Apparatus using teletext to provide channel identification information in a television transmission system ,(1987)
David E. Hollinden, Isaac M. Bell, Plural input television receiver having peaking circuit and chrominance band reject filter in a video signal channel ,(1985)
Barth Alan Canfield, Russell Thomas Fling, Apparatus for digitally controlling the D.C. value of a processed signal ,(1990)
Ronald Alfred Mills, Theodor Ernst Bart, Tv graphics and mixing control ,(1979)
Russell T. Fling, Khosro M. Rabii, Brightness clamping apparatus for TV receiver with multiple inputs ,(1986)
Francis C. Marino, Binary switching video amplifier ,(1974)
Paul D. Filliman, Robert P. Parker, Leopold A. Harwood, Ronald T. Keen, Television receiver with selectable video input signals ,(1985)