Large PCAP screen with multiple touch controller ASICS with interleaved receiver connections
US10503312B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 2018 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Jan 18, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/044
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
System, method, and computer program product embodiments are provided for a projected capacitive (PCAP) touch system that includes a touchscreen and two or more touch controller application-specific integrated circuits (ASICs) communicatively coupled to the touchscreen, where connections between receiver (and/or driver) circuits of the two or more touch controller ASICs and touchscreen electrodes are interleaved. The two or more touch controller ASICs do not exchange raw mutual capacitance or self capacitance data during a measurement frame. Further, a processor may be coupled to the two or more touch controller ASICs, and may determine final touch coordinates based on all subsets of coarse touch coordinate data from each of the two or more touch controller ASICs. Embodiments also include determining each subset of coarse touch coordinate data based on a shape of a touch rather than a two-dimensional square or rectangular region of the touchscreen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.