Touch object discrimination by characterizing and classifying touch events
US11036338B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2019 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Apr 19, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04109
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch system includes a touch-sensitive surface with emitters and detectors arranged around its periphery. A touch event caused on an object interacts with optical beams that propagate from the emitters along the touch-sensitive surface to the detectors. Beam data indicating detected intensities of the optical beams is received. The touch system determines a set of measured interactions of the optical beams with the detected touch event from the beam data and compares the set of measured interactions with sets of model interactions of the optical beams for different candidate touch feature sets. Based on the comparison, the touch system selects one of the candidate touch features sets for the touch event. The touch system may also classify the touch event as having been caused by a particular object (or class of object) based on the selected touch feature set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.