Detection of accessory presence and orientation
US9685802B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2015 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Oct 28, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Wearable devices configured to detect a magnetic field related to the presence, proximity, relative location, relative orientation, configuration, identity, or other information about an eternal charger or other external device are provided. The wearable devices are configured to detect, using one or more magnetometers, magnetic fields produced by (e.g., by permanent magnets or electromagnets) and/or modified by (e.g., by a shim or other element of magnetic material configured to have a specified high permeability) the external charger. The wearable device can change an operational state, display some information, receive power from the external charger to charge a battery of the wearable device, or perform some other function in response to determining some information about the external charger based on the detected magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.