Invention Grant
- Patent Title: Large PCAP screen with multiple touch controller ASICs with interleaved connections
-
Application No.: US16705614Application Date: 2019-12-06
-
Publication No.: US10936115B2Publication Date: 2021-03-02
- Inventor: Yansun Xu
- Applicant: Elo Touch Solutions, Inc.
- Applicant Address: US CA Milpitas
- Assignee: Elo Touch Solutions, Inc.
- Current Assignee: Elo Touch Solutions, Inc.
- Current Assignee Address: US CA Milpitas
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- Main IPC: G06F3/041
- IPC: G06F3/041 ; G06F3/044

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.
Information query