Ultrasonic based gesture recognition
US10528147B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2017 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Jan 12, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N3/048
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An ultrasonic gesture recognition system is provided that recognizes gestures based on analysis of return signals of an ultrasonic pulse that is reflected from a gesture. The system transmits an ultrasonic chirp and samples a microphone array at sample intervals to collect a return signal for each microphone. The system then applies a beamforming technique to frequency domain representations of the return signals to generate an acoustic image with a beamformed return signal for multiple directions. The system then generates a feature image from the acoustic images to identify, for example, distance or depth from the microphone array to the gesture for each direction. The system then submits the feature image to a deep learning system to classify the gesture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.