Electronic timepiece
US8213266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2009 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Aug 11, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04R20/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic timepiece, comprises a timing section to perform timing of time based on an oscillation signal; an electric wave receiving section to receive an electric wave; a voltage detecting section to detect a power source voltage supplied from a power source section; and a stop control section to stop a receiving function of the electric wave receiving section and continue a timing operation of the timing section when the voltage detecting section detects that the power source voltage becomes lower than a first level range, and then to stop the timing operation of the timing section when a warning period for urging a user to perform the power generation by the power generating section elapsed in a state where the power source voltage is lower than the first level range without changing to a lower level than a second level range lower than the first level range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.