Module for proximity and gesture sensing
US9417734B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2013 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Aug 6, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04108
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A module operates in a proximity detection mode and a gesture detection mode. The module includes an illumination source, radiation sensors and a controller. When in proximity detection mode, the illumination source emits radiation, the radiation sensors measure the radiation level, and the controller adjusts the measured radiation level to substantially cancel the contribution attributable to ambient radiation to determine the presence of a proximate object by. When in the gesture recognition mode, the level of radiation incident on the sensors is individually sampled, and the controller determines object movement by comparing the changes in the measured radiation levels over a plurality of the samples. Ambient radiation contribution is not removed from the sampled radiation levels during the gesture recognition mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.