Touch-sensitive apparatus and method
US12197675B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2022 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | May 27, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0446
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described is a touch-sensitive apparatus including a plurality of drive electrodes and control circuitry is configured to: apply time-varying voltage signal(s) to groups of neighbouring drive electrodes for a first time period; perform a first measurement on a receiver electrode during the first time period; apply time-varying voltage signal(s) groups of neighbouring drive electrodes for a second time period; perform a second measurement on the receiver electrode during the second time period; and determine a resultant signal corresponding to the mutual capacitance between the first group of neighbouring drive electrodes and the receiver electrode based on both the first measurement and the second measurement. Further described is a corresponding method for determining the presence of a touch on a touch-sensitive element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.