公开(公告)号：HUE049182T2

公开(公告)日：2020-09-28

申请号：HUE15708999

申请日：2015-02-22

Applicant: QUALCOMM INC

Inventor： GANTI SURYAPRAKASH ,  CHILUKURU SRIKANTH ,  SONG LIVINGSTONE ,  DJORDJEV KOSTADIN DIMITROV ,  KITCHENS JACK CONWAY ,  SCHNEIDER JOHN ,  BUCHAN NICHOLAS IAN ,  FENNELL LEONARD EUGENE ,  PANCHAWAGH HRISHIKESH VIJAYKUMAR ,  HINGER ASHISH ,  KUO NAI-KUEI ,  NARAYANAN KOLLENGODE ,  GUPTA SAMIR KUMAR ,  DICKINSON TIMOTHY ,  HAMEL MAX ,  BURNS DAVID WILLIAM ,  SEZAN MUHAMMED IBRAHIM ,  DANTSKER EUGENE

IPC: G06K9/00

公开(公告)号：AU2015311785B9

公开(公告)日：2020-05-28

申请号：AU2015311785

申请日：2015-09-04

Applicant: QUALCOMM INC

Inventor： DU ELIZA YINGZI ,  CHEN MING YU ,  VURAL ESRA ,  CHAN KWOKLEUNG ,  BURNS DAVID WILLIAM ,  GANTI SURYAPRAKASH ,  SCHNEIDER JOHN KEITH ,  BANDYOPADHYAY SAURAV ,  GU JIN

IPC: G06V30/144

Abstract: A method of determining whether a biometric object is part of a live individual is described. In one such method, image information is acquired from the biometric object by using a sensor, such as an ultrasonic sensor. The image information may be analyzed in at least two analysis stages. One of the analysis stages may be a temporal analysis stage that analyzes changes in the image information obtained during a time period throughout which the biometric object was continuously available to the sensor. For example, a dead/alive stage may analyze differences between image information taken at two different times in order to identify changes from one time to the next. Other stages may focus on aspects of a particular image information set, rather than seeking to assess changes over time. These other stages seek to determine whether an image information set exhibits characteristics similar to those of a live biometric object.

公开(公告)号：CA2937756C

公开(公告)日：2019-11-26

申请号：CA2937756

申请日：2015-02-22

Applicant: QUALCOMM INC

Inventor： GANTI SURYAPRAKASH ,  CHILUKURU SRIKANTH ,  SONG LIVINGSTONE ,  DJORDJEV KOSTADIN DIMITROV ,  KITCHENS JACK CONWAY ,  SCHNEIDER JOHN ,  BUCHAN NICHOLAS IAN ,  FENNELL LEONARD EUGENE ,  PANCHAWAGH HRISHIKESH VIJAYKUMAR ,  HINGER ASHISH ,  KUO NAI-KUEI ,  NARAYANAN KOLLENGODE ,  GUPTA SAMIR KUMAR ,  DICKINSON TIMOTHY ,  HAMEL MAX ,  BURNS DAVID WILLIAM ,  SEZAN MUHAMMED IBRAHIM ,  DANTSKER EUGENE

IPC: G06K9/00

Abstract: Embodiments of an ultrasonic button and methods for using the ultrasonic button are disclosed. In one embodiment, an ultrasonic button may include an ultrasonic transmitter configured to transmit an ultrasonic wave, a piezoelectric receiver layer configured to receive a reflected wave of the ultrasonic wave, a platen layer configured to protect the ultrasonic transmitter and the piezoelectric receiver layer, a first matching layer configured to match an acoustic impedance of the platen layer with an acoustic impedance of ridges of a finger, and an ultrasonic sensor array configured to detect the finger using the reflected wave.

公开(公告)号：CA2929723A1

公开(公告)日：2015-06-18

申请号：CA2929723

申请日：2014-12-12

Applicant: QUALCOMM INC

Inventor： GANTI SURYAPRAKASH ,  BURNS DAVID WILLIAM ,  GRIFFITHS JONATHAN CHARLES

IPC: G06F3/043 ,  G06K9/00

Abstract: An apparatus may include a one- or two-dimensional array of micromechanical ultrasonic transducer (PMUT) elements positioned below, beside, with, on, or above a backplane of a visual display. The backplane may be a thin-film transistor (TFT) backplane. The array of PMUT elements may be a piezoelectric micromechanical ultrasonic transducer (PMUT) array or a capacitive micromechanical ultrasonic transducer (CMUT) array. The PMUT array may be configurable to operate in modes corresponding to multiple frequency ranges. When operating in the low-frequency mode, the apparatus may be capable of gesture detection. A high-frequency mode may include a fingerprint sensor mode or a stylus detection mode.

公开(公告)号：CA2937756A1

公开(公告)日：2015-08-27

申请号：CA2937756

申请日：2015-02-22

Applicant: QUALCOMM INC

Inventor： GANTI SURYAPRAKASH ,  CHILUKURU SRIKANTH ,  SONG LIVINGSTONE ,  DJORDJEV KOSTADIN DIMITROV ,  KITCHENS JACK CONWAY ,  SCHNEIDER JOHN ,  BUCHAN NICHOLAS IAN ,  FENNELL LEONARD EUGENE ,  PANCHAWAGH HRISHIKESH VIJAYKUMAR ,  HINGER ASHISH ,  KUO NAI-KUEI ,  NARAYANAN KOLLENGODE ,  GUPTA SAMIR KUMAR ,  DICKINSON TIMOTHY ,  HAMEL MAX ,  BURNS DAVID WILLIAM ,  SEZAN MUHAMMED IBRAHIM ,  DANTSKER EUGENE

IPC: G06K9/00

Abstract: Embodiments of an ultrasonic button and methods for using the ultrasonic button are disclosed. In one embodiment, an ultrasonic button may include an ultrasonic transmitter configured to transmit an ultrasonic wave, a piezoelectric receiver layer configured to receive a reflected wave of the ultrasonic wave, a platen layer configured to protect the ultrasonic transmitter and the piezoelectric receiver layer, a first matching layer configured to match an acoustic impedance of the platen layer with an acoustic impedance of ridges of a finger, and an ultrasonic sensor array configured to detect the finger using the reflected wave.

公开(公告)号：CA3019158C

公开(公告)日：2022-05-03

申请号：CA3019158

申请日：2017-04-05

Applicant: QUALCOMM INC

Inventor： LU YIPENG ,  BURNS DAVID WILLIAM

IPC: A61B5/00

Abstract: An apparatus may include an ultrasonic sensor array, a light source system and a control system. Some implementations may include an ultrasonic transmitter. The control system may be operatively configured to control the light source system to emit light that induces acoustic wave emissions inside a target object. The control system may be operatively configured to select a first acquisition time delay for the reception of acoustic wave emissions primarily from a first depth inside the target object. The control system may be operatively configured to acquire first ultrasonic image data from the acoustic wave emissions received by the ultrasonic sensor array during a first acquisition time window. The first acquisition time window may be initiated at an end time of the first acquisition time delay.

公开(公告)号：CA2961645C

公开(公告)日：2021-10-26

申请号：CA2961645

申请日：2015-10-15

Applicant: QUALCOMM INC

Inventor： PANCHAWAGH HRISHIKESH VIJAYKUMAR ,  TANG HAO-YEN ,  LU YIPENG ,  DJORDJEV KOSTADIN DIMITROV ,  GANTI SURYAPRAKASH ,  BURNS DAVID WILLIAM ,  SHENOY RAVINDRA VAMAN ,  LASITER JON BRADLEY ,  KUO NAI-KUEI ,  SAMMOURA FIRAS

IPC: H01L41/08 ,  B06B1/06 ,  B81B3/00 ,  G06F3/041 ,  G10K11/34

Abstract: A piezoelectric micromechanical ultrasonic transducer (PMUT) includes a diaphragm disposed over a cavity, the diaphragm including a piezoelectric layer stack including a piezoelectric layer, a first electrode electrically coupled with transceiver circuitry, and a second electrode electrically coupled with the transceiver circuitry. The first electrode may be disposed in a first portion of the diaphragm, and the second electrode may be disposed in a second, separate, portion of the diaphragm. Each of the first and the second electrode is disposed on or proximate to a first surface of the piezoelectric layer, the first surface being opposite from the cavity. The PMUT is configured to transmit first ultrasonic signals by way of the first electrode during a first time period and to receive second ultrasonic signals by way of the second electrode during a second time period, the first time period and the second time period being at least partially overlapping.

公开(公告)号：AU2015311785B2

公开(公告)日：2020-05-21

申请号：AU2015311785

申请日：2015-09-04

Applicant: QUALCOMM INC

Inventor： DU ELIZA YINGZI ,  CHEN MING YU ,  VURAL ESRA ,  CHAN KWOKLEUNG ,  BURNS DAVID WILLIAM ,  GANTI SURYAPRAKASH ,  SCHNEIDER JOHN KEITH ,  BANDYOPADHYAY SAURAV ,  GU JIN

IPC: G06V30/144

Abstract: A method of determining whether a biometric object is part of a live individual is described. In one such method, image information is acquired from the biometric object by using a sensor, such as an ultrasonic sensor. The image information may be analyzed in at least two analysis stages. One of the analysis stages may be a temporal analysis stage that analyzes changes in the image information obtained during a time period throughout which the biometric object was continuously available to the sensor. For example, a dead/alive stage may analyze differences between image information taken at two different times in order to identify changes from one time to the next. Other stages may focus on aspects of a particular image information set, rather than seeking to assess changes over time. These other stages seek to determine whether an image information set exhibits characteristics similar to those of a live biometric object.

公开(公告)号：SG11201910413WA

公开(公告)日：2020-01-30

申请号：SG11201910413W

申请日：2018-05-23

Applicant: QUALCOMM INC

Inventor： SAMMOURA FIRAS ,  BURNS DAVID WILLIAM ,  SHENOY RAVINDRA VAMAN

IPC: G06K9/00 ,  G06F3/041 ,  G06F3/043

Abstract: Implementations of the subject matter described herein relate to sensors including piezoelectric micromechanical ultrasonic transducer (PMUT) sensor elements and arrays thereof. The PMUT sensor elements may be switchable between a non-ultrasonic force detection mode and an ultrasonic imaging mode. A PMUT sensor element may include a diaphragm that is capable of a static displacement on application of a force and is capable of a dynamic displacement when the PMUT sensor element transmits or receives ultrasonic signals. In some implementations, a PMUT sensor element includes a two dimensional-electron gas structure on the diaphragm. The sensors may further include a sensor controller configured to switch between a non-ultrasonic force detection mode and an ultrasonic imaging mode for one or more of the PMUT sensor elements, wherein an applied force is measured in the non-ultrasonic force detection mode and wherein an object is imaged ultrasonically during the ultrasonic imaging mode.

公开(公告)号：CA3019154A1

公开(公告)日：2017-11-09

申请号：CA3019154

申请日：2017-04-05

Applicant: QUALCOMM INC

Inventor： LU YIPENG ,  BURNS DAVID WILLIAM

IPC: G06K9/00

Abstract: A biometric system may include an ultrasonic sensor array, a light source system and a control system. Some implementations may include an ultrasonic transmitter. The control system may be capable of controlling the light source system to emit light and of receiving signals from the ultrasonic sensor array corresponding to acoustic waves emitted from portions of a target object in response to being illuminated with the light emitted by the light source system. The control system may be capable of performing a user authentication process that is based, at least in part, on the signals from the ultrasonic sensor array.