Method and apparatus for interfacing with a touch sensor
US11960691B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2020 |
| Grant date | Apr 16, 2024 |
| Priority date | — |
| Expiry date | Dec 17, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0418
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique for reading the columns (12) and rows (14) of a touch sensor (10) provides several advantages, including scalability to touch sensors with high column/row counts. A simultaneously applied set of column input signals (24) yields a corresponding set of column output signals (34) that are combined into a combined column signal (38) that is transformed into the frequency domain after digitization, to yield column values (48) corresponding to the respective touch sensor columns (12). The same process applied with respect to the touch sensor rows (14) yields a set of row values (50), with evaluation of the frequency-domain column and row values (48, 50) providing the basis for detecting touch inputs to the touch sensor (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.