Electronic device with clock function, time correction method and recording medium
US6219303A · kind A · utility
48Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2000 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Apr 5, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04R20/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wristwatch receives time-of-day information transmitted in the form of an infrared signal and then calculates the difference between the received time-of-day information and its time data. A decision is made as to whether the difference is not less than or less than a predetermined value. If the difference is less than the predetermined value, the accuracy of the received data and the accuracy set in the wristwatch are determined by referring to the types of time-measuring references. When the received data is higher accurate, the current time data stored by the first storage area is corrected by the received time data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.