Water tolerant touch sensor
US7116315B2 · kind B2 · utility
59Cited by
33References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2003 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | Apr 6, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0436
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, computer readable medium, and touch sensor system for reducing the effects of contaminants on an acoustic touch sensor. Acoustic energy is transmitted across the touch sensor substrate. Any perturbations in the acoustic energy induced by environmental events, such as valid touches or contaminants, are sensed and analyzed. If the perturbation exhibits a monotonic growth over a time period, it is considered to be a valid touch. If the perturbation exhibits a non-monotonic growth over the time period, it is considered a contaminant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.