Control circuit for large touch screen
US11481059B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2021 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Aug 26, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04886
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch screen display includes a display, a video graphics processing module, electrodes, and drive-sense circuits. The electrodes integrated into the display, which is operable to render frames of data into visible images. The video graphics processing module is operably coupled to generate the frames of data. The drive-sense circuits, when enabled and concurrent with the display rendering the frames of data into the visible images, monitor sensor signals on the electrodes. A sensor signal includes a drive signal component and a receive signal component. The drive-sense circuits generate the drive signal components of the sensor signals and the receive signal components are representation of impedances of the electrodes. A change in impedance is indicative of a proximal touch to the touch screen display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.