DE-BOUNCE CIRCUIT
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United States of America Patent
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Issued Date -
Jan 12, 2012
app pub date -
Feb 21, 2011
filing date -
Jul 6, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A de-bounce circuit is disclosed. The de-bounce circuit comprises a wave-shaping circuit, a filtering circuit and a trigger circuit. The wave-shaping circuit is adapted to shape a control signal and output a wave-shaping signal. The control signal may be generated from a mechanical switch. The filtering circuit charges/discharges a capacitor according to the wave-shaping signal, and determines whether to generate a judgment signal according to a voltage of the capacitor. The trigger circuit determines whether to generate an enable signal according to the number of times of the judgment signal.
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