Noise reduction in electronic device with touch sensitive surface
US9046959B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2011 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Aug 25, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/83
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to an electronic device with a touch sensitive surface comprising: a sensing means for capturing an acoustic signal, a touch location determining unit configured to determine the location of a touch event on the touch sensitive surface based on the acoustic signal. To improve the reliability of the touch localization process, the device further comprises a filtering unit configured to improve the signal-to-noise ratio of the acoustic signal based on one or more signals provided by one or more spurious acoustic signal generating devices of the electronic device and/or based on one or more parameters of the one or more spurious acoustic signal generating devices of the electronic device. The invention also relates to a corresponding method. The invention furthermore relates to a method for improving the confidentiality of a user input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.