Clock generation device, electronic apparatus, moving object, and clock generation method
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United States of America Patent
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Feb 2, 2016
Grant Date -
Apr 30, 2015
app pub date -
Oct 30, 2014
filing date -
Oct 31, 2013
priority date (Note) -
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Abstract
A clock generation device measures a frequency ratio between a clock signal CK1 (32.768 kHz+α) and a reference frequency value based on a clock signal CK3 (25 MHz), generates a clock signal CK2 obtained by masking at least one clock pulse of the clock signal CK1 based on the measurement result of the frequency ratio, and controls the measurement interval of the frequency ratio based on the difference between the measurement result of the frequency ratio and an average value of N (N is a natural number) measurement results of the frequency ratio.
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