ULTRASONIC IMAGING DEVICE AND METHOD FOR IMAGE ACQUISITION IN THE ULTRASONIC DEVICE

• Main Authors: GHAVANINI, Farzan, BOUZARI, Hamed
• Format: Patent
• Language: English
• Published: 28.07.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

Method for image acquisition in an ultrasonic biometric imaging device, the device comprising a plurality of ultrasonic transducers arranged at a periphery of a touch surface along one side of the touch surface, the method comprising: determining a target area of a touch surface; identifying a blocking feature preventing ultrasonic wave propagation in the touch surface such that the blocking feature creates a blocked region in the touch surface where image acquisition is not possible; determining that the target area at least partially overlaps the blocked region; dividing the transducers into a first subset and a second subset, the first and second subset being defined in that ultrasonic waves emitted by the respective subset reaches the target area on a first and second side of the blocking feature; and capturing an image of the biometric object using transmit and receive beamforming.