Input system and method for detecting touch using the same
US9977517B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2015 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Oct 8, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0442
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An input system includes an input pen for interfacing with a touchscreen of a display panel. The input pen includes a conductive tip. A switching unit of the pen connects the conductive tip to a receiving unit and a driving unit. The receiving unit receives touchscreen driving signals from the touchscreen through the conductive tip. The driving unit generates pen driving signals transferred to the touchscreen through the conductive tip. The input pen also include a signal processing unit to calibrate timing of the pen driving signal by synchronizing the pen driving signal with the touchscreen driving signal. To enable touch detection, the conductive tip is positioned to contact or approach the touchscreen, the touchscreen driving signal is received from the touchscreen via the conductive tip. The pen driving signal is generated and transferred to the touchscreen via the conductive tip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.