Erasure operable e-pen within touch sensor and e-pen systems
US11494006B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2021 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | Aug 30, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04162
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An e-pen includes e-pen sensor electrodes (including a first and a second e-pen sensor electrode) and drive-sense circuits (DSCs) (including a first DSC and a second DSC. The first DSC drives a first e-pen signal having a first frequency via a first single line coupling to the first e-pen sensor electrode and simultaneously senses, via the first single line, the first e-pen signal. Based on e-pen/touch sensor device interaction, the first e-pen signal is coupled into at least one touch sensor electrode of the touch sensor device. The first DSC process the first e-pen signal to generate a first digital signal representative of a first electrical characteristic of the first e-pen sensor electrode. Similarly, the second DSC drives a second e-pen signal having a second frequency via a second single line coupling to the second e-pen sensor electrode and simultaneously senses, via the second single line, the second e-pen signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.