PHYSICAL QUANTITY MEASURING APPARATUS AND PHYSICAL QUANTITY MEASURING METHOD
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United States of America Patent
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Issued Date -
Dec 26, 2013
app pub date -
Jun 19, 2013
filing date -
Jun 20, 2012
priority date (Note) -
Abandoned
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Abstract
A physical quantity measuring apparatus includes: a signal input module receiving an input signal having consecutive pulses; a low resolution clock signal generator generating a low resolution clock signal; a high resolution clock signal generator generating a high resolution clock signal; a gate time generator outputting gate time signals at a predetermined interval; a low resolution clock signal synchronizer generating a low resolution clock synchronization signal; a low resolution counter counting the number of rising edges of the low resolution clock signal; a high resolution clock signal generation controller outputting the high resolution clock signal as a gated clock signal; a high resolution clock signal synchronizer generating a high resolution clock synchronization signal; and a high resolution counter counting the number of rising edges of the gated clock signal.
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