APPARATUS FOR DETECTING CLOCK SIGNAL AND SYSTEM FOR DETECTING CLOCK SIGNAL USING THE SAME
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United States of America Patent
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Issued Date -
Jun 18, 2015
app pub date -
Apr 4, 2014
filing date -
Dec 17, 2013
priority date (Note) -
Abandoned
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Abstract
An apparatus for detecting a clock signal may include a first voltage generation unit storing electrical charges if an input signal has a high level while discharging the electric charges if the input signal has a low level so as to generate a first voltage, a second voltage generation unit storing electrical charges if the input signal has a low level while discharging the electric charges if the input signal has a high level so as to generate a second voltage, and a signal detection unit comparing the first voltage or the second voltage with a reference voltage so as to detect whether a clock signal or operating power is being input.
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