Digital-to-analog controller-referenced touch sensing system, and related systems, methods, and devices
US12147626B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2021 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Dec 9, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/66
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Some disclosed embodiments relate, generally, to shaping a waveform of a reference signal used by a driver of a touch sensor to limit electromagnetic emissions (EME) emitted by a touch sensor during a sensing operation. Some disclosed embodiments relate, generally, to a DAC referenced touch sensor driver and controlling an amount of EME emitted at a touch sensor using shapes of reference signals used by a touch detector to detect touches at the touch sensor. Some disclosed embodiments relate, generally, to compensating for effects of foreign noise at a touch sensor and, more specifically, to changing a shape of a reference signal based on a change to a sampling rate made to compensate for foreign noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.