Method and a touch sensing device for implementing the method
US9342192B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2011 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Jan 12, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0436
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method for determining an acoustic response attributed to a location of an impact, in particular a touch event, on a surface of an object including at least one transducer comprising the steps of: Injecting a predetermined acoustic bending wave by the transducer at the transducer position (5a, 5b), Sensing a bending wave parameter at a secondary location (11) on the surface different to the transducer position, determining the acoustic response based on the sensed bending wave parameter and properties of the predetermined acoustic bending wave effectively as if the injection took place at the at least one secondary location (11) on the surface different to the transducer position and the sensing took place at the transducer position based on reciprocity principles, and determining the acoustic response attributed to at least one location (9) on the surface different to the at least one secondary location (11) on the surface different to the transducer position based on at least two different acoustic responses determined in step c).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.