Method for improving linearity of touch system coordinates
US9471186B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2013 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Jun 27, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04104
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for improving linearity of touch system coordinates first reads two-dimensional raw data of a capacitive touch panel. Next, it reads a pixel and adjacent pixels of the pixel from the two-dimension raw data. Then, it determines whether the value of the pixel is great than a pre-determined threshold. If the value of the pixel is not greater than the pre-determined threshold, it then determines whether there is a value of the adjacent pixels is greater than the pre-determined threshold. If there is no value of the adjacent pixels greater than the pre-determined threshold, it sets the value of the pixel to a pre-determined value. Otherwise, it reserves the value of the pixel in order to increase the linearity of two-dimensional raw data so as to avoid the interference of noise to the two-dimensional raw data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.