Auto brightness limiter circuit for television

Details Auto brightness limiter circuit for television Auto brightness limiter circuit for television

H - Electricity

04

N

350/3

H04N 7/00 (2006.01) H04N 5/59 (2006.01)

Patent

CA 1191593

Abstract In an automatic brightness limiter circuit a separate digital signal display from a personal computer is superposed on a television broadcast screen and displayed simultaneously. The beam current of the cathode ray tube is detected and if found to exceed a prescribed value, feedback is applied to the video ampli- fier circuit only of the television broadcast display. Feedback is not applied to the amplifier circuit of the digital signal dis- play. The amplifier of this digital signal display is arranged so that independent limiting action is carried out corresponding to the amplitude of the digital signal.

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