Radial layout for acoustic wave touch sensor
US9348467B2 · kind B2 · utility
2Cited by
23References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2011 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Nov 15, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/043
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Surface acoustic waves in a radial pattern are used to detect touch. Different radial transducer arrangements may allow for locating multiple simultaneous touches without ambiguity. Instead of transmitting along a line to be reflected at multiple points, the surface acoustic waves are transmitted radially. The surface acoustic waves are transmitted along different angles in an angular span spread out over at least part of the touch region. Using acoustic waves traveling along intersecting paths, a point location of a touch may be determined by detection, in part, of at least one angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.