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:
Apr. 30, 2024
Filed:
Jun. 01, 2020
Fingerprint Cards Anacatum Ip Ab, Gothenburg, SE;
Hamed Bouzari, København Ø, DK;
Farzan Ghavanini, Mölndal, SE;
FINGERPRINT CARDS ANACATUM IP AB, Gothenburg, SE;
Abstract
Method for image acquisition in an ultrasonic biometric imaging device, the method comprising: determining a target area of a touch surface; by a plurality of ultrasonic transducers arranged at a periphery of the touch surface, emitting a shaped ultrasonic beam towards the target area using transmit beamforming; by the ultrasonic transducers, receiving reflected ultrasonic echo signals defined by received RF-data, the reflected ultrasonic echo signals resulting from interactions with an object in contact with the touch surface at the target area; subtracting background RF-data from the received RF-data to form a clean image; performing receive side beamforming to form a reconstructed image from the clean image; and for a plurality of reconstructed images resulting from a plurality of emitted ultrasonic beams for a given target area, adding the plurality of reconstructed images to form a summed image.