Electronic apparatus
US6265789A · kind A · utility
166Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Sep 10, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In at least two separated devices, a data transmission or a power transmission is performed through the electromagnetic coupling of coils which are arranged in mutually facing positions in the respective devices. In order to reduce the effect of a displacement between two coils even if the two coils are displaced from each other, the inner diameter of a coil 110 on the side of a station, as a primary coil, for performing the data transmission or the power transmission, is set to be larger than the inner diameter of a coil 210 on a watch side, as a secondary coil, by at least 1 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.