Temperature compensation by positioning of plural piezoelectric vibrators in an electronic wristwatch
US4219754A · kind A · utility
11Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1978 |
| Grant date | Aug 26, 1980 |
| Priority date | — |
| Expiry date | Aug 11, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/215
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In an electronic wristwatch having a watch body an a plurality of electronic vibrators having frequency-position characteristics, the frequency-temperature characteristic of the standard signal generated thereby is improved by positioning the vibrators in the watch body so that at least one vibrator has a different frequency-position characteristic than the other vibrators to compensate for any frequency deviation thereof due to the orientation of the watch body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.