Tough panel location detection with different frequency-phase offset combinations of electrode signals
US12321548B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2024 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Feb 26, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0446
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch panel system that includes drivers for providing detection signals on a first plurality of electrodes of a touch panel where each detection signal includes one or more frequency signal components with each frequency signal component having a frequency and a phase offset. The detection signals includes at least three phase offsets for at least one frequency of the frequency signal components. Each detection signal has a unique frequency-phase offset combination of the one or more frequency signal components. The unique combinations allow for the determination of a touch at specific locations on the panel by sensing signals on a second set of electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.