Time adjustment device, timepiece with a time adjustment device, and a time adjustment method
US7649812B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 2008 |
| Grant date | Jan 19, 2010 |
| Priority date | — |
| Expiry date | Oct 29, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04R20/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A time adjustment device having a reception unit that receives satellite signals transmitted from positioning information satellites; a time information generating unit that generates internal time information; a time information adjustment component that corrects the internal time information; and a reception controller that controls operation of the reception unit; wherein the satellite signal contains satellite time information that is kept by the positioning information satellite; the reception unit can select a first reception mode for receiving first information including the hour, minute, and second data in the satellite signal, and a second reception mode for receiving second information including the hour, minute, and second data, week information for the current year, month, and day, and satellite health information in the satellite signal; the time information adjustment component includes a time adjustment recording component that records whether or not the time was adjusted using the second information received in the second reception mode after the internal time information was initialized, a first time information adjustment component that controls the reception unit…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.