Touch sensitive device with a camera
US11003284B2 · kind B2 · utility
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1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2019 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Jun 12, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0421
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch sensitive device includes a touch surface and emitters and detectors. The emitters produce optical beams that propagate across the touch surface and are received by the detectors. Touch events from a touch object disturb the beams propagating toward the detectors. Beam values are recorded by the detectors and used to determine the touch events. The touch sensitive device also includes a camera that captures images of touch objects. The images and variations in the beams are analyzed to continuously track the touch object before, during, and after touch events.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.