Device and method for controlling video muting using a microcomputer
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United States of America Patent
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Sep 14, 1999
Grant Date -
N/A
app pub date -
Jan 22, 1997
filing date -
Jan 22, 1996
priority date (Note) -
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Abstract
A video muting control device using a microcomputer, comprising a video mute key for generating a video mute command upon activation by a user; a microcomputer connected to the video mute key, the microcomputer generating a blanking control signal in response to an input of the video muting command, a preamplifier for receiving RGB video signals, the preamplifier generating an amplified video signal in response to a clamping signal and a contrast control signal, and a video mute circuit for muting a video display in response to the blanking control signal by grounding any one of the RGB video signals, the clamping signal and the contrast control signal.
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