Methods and apparatus for sensing touch events on a display
US8436833B2 · kind B2 · utility
26Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2009 |
| Grant date | May 7, 2013 |
| Priority date | — |
| Expiry date | Jul 4, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0421
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus provide for a touch sensitive display, in which a transparent layer is disposed over a display layer; light is directed to propagate into and/or through the transparent layer; scattered light is measured in response to an object touching a surface the transparent layer and disturbing the propagation of the light therethrough; and one or more positions at which the object touches the transparent layer are computed based on signals obtained by the step of measuring the scattered light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.