Electronic hour timesetting device for electronic analog timepiece
US4357693A · kind A · utility
11Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1980 |
| Grant date | Nov 2, 1982 |
| Priority date | — |
| Expiry date | Jun 20, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G5/022
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic analog timepiece with hour and minute hand driven by a stepping motor in accordance with low frequency timekeeping signals supplied by a high frequency quartz time reference. The electronic time-setting control circuit is controlled by a single manual push-button switch. The time is adjusted for correction, daylight saving or time zone change at slow, fast and accelerated rate in the clockwise and counterclockwise directions. Both an automatic single hour time correction with automatic restart, and a manual restart option are incorporated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.