Clock generating device, electronic apparatus, moving object, clock generating method
US9389636B2 · kind B2 · utility
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2References
9Claims
0Family size
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Key dates
| Filing date | Oct 30, 2014 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | Oct 30, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A clock generating device measures a frequency ratio between a clock signal (32.768 kHz+α) and a reference frequency value based on a clock signal (25 MHz); generates a clock signal obtained by masking a portion of clocks of the clock signal based on a measurement result of the frequency ratio; and updates a compensation value of a frequency temperature characteristic of the clock signal when a difference between the measurement result of the frequency ratio and an average value of N (N is a natural number) measurement results is greater than a reference value of the frequency ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.