System and method of noise mitigation for improved stylus detection
US11842011B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2020 |
| Grant date | Dec 12, 2023 |
| Priority date | — |
| Expiry date | Apr 18, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04106
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch screen or touch sensor panel can detect touches by conductive objects (e.g., fingers) and an active stylus and can mitigate noise in the sensed stylus signal from multiple noise sources. In some examples, the touch sensor panel includes a plurality of touch electrodes that can be used to sense touch data indicative of a proximate conductive object and to sense stylus data. The stylus data can include noise from one or more sources, for example. In some examples, the electronic device uses the touch data to determine a characteristic of one of the sources of noise and the stylus data to determine another characteristic of the source of noise and one or more characteristics of another source of noise. After modeling the noise, the electronic device can remove the noise from the stylus data to improve the accuracy of the stylus scan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.