Methods and systems for determining stylus orientation information
US11983365B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2022 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Dec 14, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20081
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic device includes a capacitive sense array and is coupled to a stylus including a conductive tip and a conductive wire module. The conductive tip and wire module of the stylus are driven by a tip drive signal and a wire drive signal simultaneously. The tip and wire drive signals have a single stylus drive frequency. While the conductive tip and wire module are driven by the tip and wire drive signals, the electronic device scans the capacitive sense array to obtain a plurality of capacitive sense signals from a plurality of sense electrodes of the capacitive sense array. The electronic device generates a composite image of the capacitive sense array based on the plurality of capacitive sense signals and processes the composite image to determine one or more orientation parameters (e.g., a tilt angle) of the stylus with respect to a surface of the capacitive sense array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.