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:
Sep. 22, 2026
Filed:
May. 31, 2024
Applicant:
Nxp B.v., Eindhoven, NL;
Inventor:
Geunwook Kim, Seoul, KR;
Assignee:
NXP B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 27/26 (2006.01);
U.S. Cl.
CPC ...
G01R 27/2605 (2013.01);
Abstract
A capacitance sensing circuit and method uses a current pulse to charge an external capacitor. A first voltage associated with the external capacitor is converted to current to charge an internal capacitor. A second voltage, which is associated with the internal capacitor that corresponds to the first voltage, is compared with an adjustable threshold voltage to generate a toggle signal. The adjustable threshold voltage is changed in response to the toggle signal, which is associated with a capacitance of the external capacitor.