Finger tracking in wet environment
US10642418B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2017 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Dec 22, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2218/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Touch input processing for touch-sensitive devices can be improved by filtering unintended contact detected on a touch-sensitive surface. In wet environments in particular, water on the touch-sensitive surface can be erroneously detected as touch input and degrade touch performance. In some examples, input patches can be classified as touch patches or non-touch patches prior to computationally-intensive touch processing. Filtering out unintended touches classified as non-touch patches can reduce processing requirements and save power. Additionally, classifying input patches can improve touch performance in wet environments. In some examples, input patches can be classified as touch patches or non-touch patches based on characteristics of edge touch nodes. In some examples, input patches can be classified as touch patches or non-touch patches based on a state-based signal threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.