Angle-of-arrival-based gesture recognition system and method
US10386481B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2018 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Jul 19, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0433
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system for gesture recognition using angle-of-arrival information. The method includes generating ultrasound waves with a transmitter; receiving the ultrasound waves at a receiver that includes two pairs of sensors that record the ultrasound waves; estimating with a processor, first and second angle-of-arrivals θx(ti),θy(ti) for the ultrasound waves, where x and y indicate two perpendicular axes that form a plane in which the two pairs of sensors are distributed and the first and second angle-of-arrivals are defined relative to the plane; grouping N estimated first and second angle-of-arrivals θx(ti),θy(ti) values to form a matrix g that corresponds to the predetermined path; comparing the matrix g with plural gesture templates from a gesture dictionary; identifying a gesture template from the plural gesture templates that corresponds to the predetermined path; and displaying the gesture template associated with the predetermined path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.