The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2025
Filed:
Nov. 22, 2024
Cypress Semiconductor Corporation, San Jose, CA (US);
Sean O'Sullivan, Clonakilty, IE;
Cathal O'Lionaird, Cork, IE;
Thorsten Piper, Frankfurt am Main, DE;
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
A device includes a signal bus to carry a sinusoidal drive signal and receive (RX) sensing hardware, coupled to an electrode of a touch panel, including an attenuator configured to detect a touch signal from the electrode, a multiplexer coupled between an input to the attenuator and the signal bus, and a capacitor coupled between the signal bus and the multiplexer. Control logic is coupled to the RX sensing hardware to perform a self-test, including to disconnect the RX sensing hardware from the electrode, cause the multiplexer to couple the capacitor to the input of the attenuator, determine whether an output of the RX sensing hardware is within a functional operating range.