Electronic watch including capacitive keys on its crystal
US6868046B2 · kind B2 · utility
6Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2001 |
| Grant date | Mar 15, 2005 |
| Priority date | — |
| Expiry date | Nov 1, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04C3/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The watch is provided with a circular row of capacitive keys defined by transparent electrodes (21 to 32) arranged on the inner face of the crystal (5) of the watch and connected to a detection device via a multiplexer. These keys are activated by the person wearing the watch placing a finger (38) on the crystal facing one of the electrodes. The watch further includes means for detecting the position of at least one of the hands (8, 9) by means of the same detection device, using the electrodes (21 to 32) of the capacitive keys and/or other fixed electrodes (51).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.