Method for filtering out signals of touch device
US8605052B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2008 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Jan 3, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04182
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for filtering out signals of a touch device includes following steps: first, obtaining a touch signal; next, obtaining signal intensity values respectively corresponding to a first sensing area, a second sensing area and a third sensing area according to the above-mentioned touch signal, wherein the above-mentioned second sensing area is located between the above-mentioned first sensing area and third sensing area; then discarding the touch signal if the signal intensity value of the above-mentioned second sensing area is less than the signal intensity values of the first sensing area and the third sensing area. In this way to discard the noise signal, the present invention is able to increase the accuracy and the stability of a capacitive touch device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.