Adaptive high dynamic range surface capacitive touchscreen controller
US8847896B2 · kind B2 · utility
0Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2010 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | May 24, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/044
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for controlling a touch screen. A touch screen element having a plurality of contacts, such as one contact electrode at each of four corners. A multiplexer coupled to the touch screen element for forming a plurality of connections, such as various combinations of the contact electrodes to allow measurements to be made of the impedance of the touch screen element from the left side to the right side, from the top to the bottom, and do forth. A touch screen processor coupled to the touch screen element for determining an oscillation frequency of the touch screen element as a function of the electrode connections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.