Time-measurement device and method of controlling the same
US6367967B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1999 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Dec 3, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G19/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To reduce electric power consumed during the operation of adjusting the indication of time and reduce the time required for the time adjusting operation. Using a second hand driving motor and a hour/minute hand driving motor both capable of rotating in both clockwise and counterclockwise directions, the indication of time is adjusted by driving the second hand driving motor and the hour/minute hand driving motor at times different from each other. The hand driving method (hand driving direction) is determined on the basis of the time elapsed during the power saving mode measured by a time information adjusting part such that the hands are driven in a direction which results in a reduction in the power consumption or the adjusting time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.