Transcapacitive sensing with consideration of capacitive couplings from non-adjacent electrodes
US11409396B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 2021 |
| Grant date | Aug 9, 2022 |
| Priority date | — |
| Expiry date | May 3, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04108
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for capacitive sensing includes: driving, by a processing system, a first plurality of transmitter electrodes using a first plurality of basis functions, wherein the first plurality of transmitter electrodes are part of a first set of non-intersecting electrodes which are arranged adjacently to one another in a first orientation; and obtaining, by the processing system, via a first plurality of receiver electrodes of the first set of non-intersecting electrodes, a first plurality of resulting signals corresponding to the first plurality of basis functions driven onto the first plurality of transmitter electrodes. The first plurality of resulting signals includes: capacitance information for nearest-neighbor pairs of electrodes of the first set of non-intersecting electrodes; capacitance information for second nearest-neighbor pairs of electrodes of the first set of non-intersecting electrodes; and/or capacitance information for third nearest-neighbor pairs of electrodes of the first set of non-intersecting electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.