Magnetometer-based gesture sensing with a wearable device
US10146323B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2017 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Apr 13, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/0331
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A wearable computing device such as a head-mounted display (HMD) may be equipped with a magnetometer for detecting presence and motion of a hand-wearable magnet (HWM). The HMD may analyze magnetic field measurements of the magnetometer to determine when the HWM moves within a threshold distance of the magnetometer, and may thereafter determine one or more patterns of motion of the HWM based the magnetic field measurements. The HMD may operate in a background detection state in order to determine a background magnetic field strength and to monitor for magnetic disturbances from the HWM. Upon occurrence of a trigger event corresponding to magnetic disturbance above a threshold level, the HMD may transition to operating in a gesture detection state in which it analyzes magnetometer measurements for correspondence with known gestures. Upon recognizing a known gesture, the HMD may carry out one or more actions based on the recognized known gesture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.