Water detection and wipe detection algorithms for touchscreen proximity sensing
US10437384B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2016 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Jul 30, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0488
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The various implementations described herein include systems, methods and/or devices used to enable touchscreen proximity sensing. An exemplary method is performed at a touch sensitive device and includes detecting the presence of water on a capacitive sense array (CSA). The method detects decreased electrode responses from at least a subset of a plurality of sensor electrodes of the CSA that satisfy one or more first trigger conditions. The method further includes: (1) normalizing the CSA based on the detected decrease in electrode responses to form a second baseline, (2) determining that the water is removed from the portion of the CSA based on one or more subsequent electrode responses from at least the subset of the plurality of sensor electrodes that satisfy one or more second trigger conditions, and (3) normalizing the CSA based on the detected one or more subsequent electrode responses to form a third baseline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.