Method and apparatus for detecting hold condition on an acoustic touch surface
US8659579B2 · kind B2 · utility
51Cited by
5References
20Claims
0Family size
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Key dates
| Filing date | May 14, 2010 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | Oct 18, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/043
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A bending wave touch system includes at least one sensor and a touchscreen controller. The at least one sensor is coupled to a substrate and is responsive to vibrations in the substrate. The at least one sensor outputs signals. The controller receives the signals from the at least one sensor and identifies touch coordinates based on high frequency components of the signals when a touch on the substrate includes at least one of a tap, a drag and a lift-off. The controller identifies a status of a hold condition of the touch based on at least two different time averages of low frequency components of the signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.