Liquid crystal display (LCD) protection circuit
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United States of America Patent
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Mar 24, 1998
Grant Date -
N/A
app pub date -
May 26, 1995
filing date -
May 26, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A display protection circuit includes a first OR gate which receives a first pulse at one input and a first clock signal at another input. A second OR gate receives the first pulse at one input and a second clock signal at another input. A first monostable multivibrator is coupled to the first OR gate and receives an output of the first OR gate and generates a second pulse in response thereto. A second monostable multivibrator is coupled to the second OR gate and receives an output of the second OR gate and generates a third pulse in response thereto. A first logic gate is coupled to the first and second monostable multivibrators and generate a fourth pulse which changes state in response to one of the first and second clock signals stopping transitioning for a first predetermined period of time.
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