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:
Jun. 03, 2025
Filed:
Oct. 16, 2023
Sigmasense, Llc., Wilmington, DE (US);
Daniel Keith Van Ostrand, Leander, TX (US);
Michael Shawn Gray, Elgin, TX (US);
Patrick Troy Gray, Cedar Park, TX (US);
Richard Stuart Seger, Jr., Belton, TX (US);
SigmaSense, LLC., Austin, TX (US);
Abstract
A fingerprint imaging device incorporating a first plurality of electrodes, a second plurality of electrodes and drive-sense circuitry. The first plurality of electrodes and the second plurality of electrodes are separated by a dielectric material and arranged in a crossing pattern in a sensing area. In an embodiment, each of the drive-sense circuits is configured to drive a sensor signal on an electrode of the first plurality or second plurality of electrodes, the sensor signal including a drive signal component and a receive signal component. Each of the drive-sense circuits is further configured to generate, based on the receive signal component, a sensed signal representative of at least a first impedance of the electrode. For at least some of the drive-sense circuits, the sensed signal further represents a second impedance of the electrode in accordance with a drive signal component from a differing electrode. A processing module of the device is configured to process the sensed signals to detect a finger touch to the sensing area and generate a digital representation/capacitive image of a fingerprint corresponding to the finger touch.