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. 12, 2023
Filed:
Nov. 14, 2022
Qualcomm Incorporated, San Diego, CA (US);
Chandrika Singasani, Secunderabad, IN;
Nirma Lnu, Jhunjhunu, IN;
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Methods, devices and systems for controlling an ultrasonic fingerprint sensor are disclosed. Some examples involve determining that a first bias voltage is not sufficient for one or more affected ultrasonic receiver pixels of the ultrasonic receiver array and determining one or more affected regions of the ultrasonic receiver array in which the one or more affected ultrasonic receiver pixels are located. Some examples involve determining one or more unaffected regions of the ultrasonic receiver array in which the one or more affected ultrasonic receiver pixels are not located. Some examples involve determining a second bias voltage for the one or more affected regions and recalibrating the ultrasonic fingerprint sensor to apply the second bias voltage to the affected regions and to apply the first bias voltage to the one or more unaffected regions when the ultrasonic receiver array receives ultrasound signals.