Suppression of display noise in touch screen controllers
US10156945B2 · kind B2 · utility
0Cited by
0References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2015 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Nov 3, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04184
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic device includes a touch screen controller. The touch screen controller is configured to asynchronously measure a capacitance between a sense line and a drive line of a sensing layer with respect to a horizontal sync signal of a display layer. In addition, the touch screen controller is also configured to disconnect from the sense line for a given period of time following a rising edge of the horizontal sync signal so as to reduce capacitive coupling of display noise from the horizontal sync signal to the sensing layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.