Magnetic finger tracking with multi-frequency modulation
US10802586B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 2018 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Apr 25, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Multiple magnetic field generators have predetermined positions relative to a wearable device, such as a glove, and emit magnetic fields. Additionally, one or more magnetic field sensors are positioned on locations of the wearable device. A magnetic field sensor generates an output signal based on magnetic fields emitted by the magnetic field generator and detected by the magnetic field sensor. From the output signal and the predetermined positions of the magnetic field generators relative to the wearable device, a position and an orientation of the magnetic field sensor in a global coordinate system is determined. In some embodiments, a trained machine learning model is employed in conjunction with trilateration to obtain the position and orientation of the magnetic field sensor from its output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.