Instrument detection with an optical touch sensitive device
US10901556B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Dec 6, 2019 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Dec 6, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04109
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch-sensitive device includes multiple emitters and detectors and at least one acoustic sensor. Each emitter produces optical beams which are received by the detectors. Touch objects (e.g., fingers, pens, styluses) disrupt some of the optical beams and generate vibrations that are detected by the acoustic sensor. The touch-sensitive device determines information about touch events based on beam data derived from the output of the detectors and acoustic data derived from the output of the acoustic sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.