公开(公告)号：US10699095B2

公开(公告)日：2020-06-30

申请号：US16049236

申请日：2018-07-30

Applicant: QUALCOMM Incorporated

Inventor： Hrishikesh Vijaykumar Panchawagh ,  Kostadin Dimitrov Djordjev

IPC: G06K9/00

Abstract: This disclosure provides systems, methods and apparatus for a controller configured to switch operation of a fingerprint sensor among operational modes. In one aspect, a fingerprint sensor may switch from operating in a first operational mode to a second operational mode based on one or more characteristics of fingerprint image data generated with the fingerprint sensor operating in the first operational mode. One of the first operational mode or the second operational mode may be a capacitive sensing mode, and the other may be an ultrasonic sensing mode.

公开(公告)号：US11915508B2

公开(公告)日：2024-02-27

申请号：US18061938

申请日：2022-12-05

Applicant: QUALCOMM Incorporated

Inventor： Rakesh Pallerla ,  Hrishikesh Vijaykumar Panchawagh ,  Prakash Tiwari ,  Naga Chandan Babu Gudivada

IPC: G06V40/13 ,  B06B1/06 ,  H04M1/02

CPC classification number: G06V40/1306 ,  H04M1/026 ,  H04M2250/22

Abstract: Apparatuses, systems, and methods are provided for ultrasonic fingerprint sensors that are able to be used to detect fingerprints from opposing sides of an apparatus, e.g., a smartphone with screens on both sides of the housing. Some implementations of such sensors may include, for example, two piezoelectric and sensor pixel layer assemblies coupled to a common controller. Other implementations of such sensors may include, for example, a single piezoelectric and sensor pixel assembly coupled with a controller configured to apply a range-gate delay to obtain fingerprint scans from either opposing side of an apparatus. Yet further implementations of such sensors may include acoustic masking layers to spatially filter ultrasonic waves propagating to either side of an apparatus.

公开(公告)号：US11703578B2

公开(公告)日：2023-07-18

申请号：US17663357

申请日：2022-05-13

Applicant: QUALCOMM Incorporated

Inventor： Yipeng Lu ,  Hrishikesh Vijaykumar Panchawagh ,  Jessica Liu Strohmann ,  Kostadin Dimitrov Djordjev

IPC: G01S7/52 ,  G06F3/041 ,  G06V40/13 ,  G06F3/044

CPC classification number: G01S7/5205 ,  G06F3/0418 ,  G06V40/1306 ,  G06F3/044

Abstract: Techniques for operating an ultrasonic sensor array, the ultrasonic sensor array disposed under a platen, include making a determination whether or not to recalibrate the ultrasonic sensor array based on whether a first screen protector disposed above the platen has been removed or replaced by a second screen protector; and recalibrating the ultrasonic sensor array, when the determination is to recalibrate the ultrasonic sensor array. In some cases, the techniques include prompting a user to indicate whether or not the screen protector has been changed or removed, and recalibrating the ultrasonic sensor array only after confirmation from the user.

公开(公告)号：US11346927B2

公开(公告)日：2022-05-31

申请号：US16414164

申请日：2019-05-16

Applicant: Qualcomm Incorporated

Inventor： Yipeng Lu ,  Hrishikesh Vijaykumar Panchawagh ,  Jessica Liu Strohmann ,  Kostadin Dimitrov Djordjev

IPC: G01S7/52 ,  G06V40/13 ,  G06F3/041 ,  G06F3/044

Abstract: Techniques for operating an ultrasonic sensor array, the ultrasonic sensor array disposed under a platen, include: making a determination whether or not to recalibrate the ultrasonic sensor array based on whether a first screen protector disposed above the platen has been removed or replaced by a second screen protector; and recalibrating the ultrasonic sensor array, when the determination is to recalibrate the ultrasonic sensor array. In some cases, the techniques include prompting a user to indicate whether or not the screen protector has been changed or removed, and recalibrating the ultrasonic sensor array only after confirmation from the user.

公开(公告)号：US11275923B2

公开(公告)日：2022-03-15

申请号：US16751849

申请日：2020-01-24

Applicant: QUALCOMM Incorporated

Inventor： Nicholas Ian Buchan ,  Sandeep Louis D'Souza ,  Jessica Liu Strohmann ,  Hrishikesh Vijaykumar Panchawagh

IPC: G06K9/28 ,  G06K9/00 ,  G06F21/32 ,  G06K9/46 ,  G06K9/38 ,  G01N29/24 ,  G06F3/01 ,  G06F3/043 ,  H01L41/08

Abstract: An apparatus may include an ultrasonic sensor system, a low-frequency vibration source and a control system. The ultrasonic sensor system may include an ultrasonic receiver and an ultrasonic transmitter configured for transmitting ultrasonic waves in a first frequency range (e.g., 1 MHz to 30 MHz). The low-frequency vibration source may be configured for generating low-frequency vibrations in a second frequency range (e.g., the range of 5 Hz to 2000 Hz). The control system may be configured for synchronizing the generation of the first low-frequency vibrations and the transmission of the first ultrasonic waves.

公开(公告)号：US20220004728A1

公开(公告)日：2022-01-06

申请号：US16946717

申请日：2020-07-01

Applicant: QUALCOMM Incorporated

Inventor： Jessica Liu Strohmann ,  Hrishikesh Vijaykumar Panchawagh ,  Nicholas Ian Buchan ,  Yipeng Lu ,  Kostadin Dimitrov Djordjev

IPC: G06K9/00 ,  G01N29/34

Abstract: An ultrasonic sensor system may include an ultrasonic transceiver layer, a thin-film transistor (TFT) layer proximate a first side of the ultrasonic transceiver layer, a frequency-splitting layer proximate a second side of the ultrasonic transceiver layer and a high-impedance layer proximate the frequency-splitting layer. The frequency-splitting layer may reside between the ultrasonic transceiver layer and the high-impedance layer. The high-impedance layer may have a higher acoustic impedance than the frequency-splitting layer.

公开(公告)号：US11087108B2

公开(公告)日：2021-08-10

申请号：US16691416

申请日：2019-11-21

Applicant: QUALCOMM Incorporated

Inventor： Jack Conway Kitchens ,  John Keith Schneider ,  Stephen Michael Gojevic ,  Evan Michael Breloff ,  James Anthony Miranto ,  Emily Kathryn Brooks ,  Fitzgerald John Archibald ,  Alexei Stoianov ,  Raj Kumar ,  Sai Praneeth Sreeram ,  Nirma Lnu ,  Sandeep Louis D'Souza ,  Nicholas Ian Buchan ,  Yipeng Lu ,  Chin-Jen Tseng ,  Hrishikesh Vijaykumar Panchawagh

IPC: G06K9/00 ,  G02B1/00

Abstract: An apparatus may include a cover layer, a layer of first metamaterial proximate (or in) the cover layer, a light source system configured for providing light to the layer of first metamaterial and a receiver system. The first metamaterial may include nanoparticles configured to create ultrasonic waves when illuminated by light. The receiver system may include an ultrasonic receiver system configured to receive ultrasonic waves reflected from a target object in contact with, or proximate, a surface of the cover layer. The control system may be configured to receive ultrasonic receiver signals from the ultrasonic receiver system corresponding to the ultrasonic waves reflected from the target object and to perform an authentication process and/or an imaging process that is based, at least in part, on the ultrasonic receiver signals.

公开(公告)号：US20210200350A1

公开(公告)日：2021-07-01

申请号：US17202843

申请日：2021-03-16

Applicant: QUALCOMM Incorporated

Inventor： Richard Stacy Withers ,  David Johnson ,  Hrishikesh Vijaykumar Panchawagh

IPC: G06F3/044 ,  G06F3/041 ,  G06F3/047

Abstract: Methods, systems, and devices for detection of a protective cover film on a capacitive touch screen are described. A device may include a capacitive touch screen having a surface and a sensor grid underneath the surface having a set of conductive columns and a set of conductive rows. The device may measure a mutual capacitance between a subset of conductive columns or a subset of conductive rows associated with a sensor grid, and compare the measured mutual capacitance between the subset of conductive columns or the subset of conductive rows to a baseline mutual capacitance associated with the set of conductive columns and the set of conductive rows. According to the comparison, the device may determine a presence of a protective layer in contact with the surface of the capacitive touch screen, and adjust an operating characteristic of the sensor grid.

公开(公告)号：US20210117519A1

公开(公告)日：2021-04-22

申请号：US16655039

申请日：2019-10-16

Applicant: QUALCOMM Incorporated

Inventor： Soon Joon Yoon ,  Changting Xu ,  Jessica Liu Strohmann ,  Hrishikesh Vijaykumar Panchawagh ,  Kostadin Dimitrov Djordjev

IPC: G06F21/32 ,  G06K9/00

Abstract: A method may involve controlling an apparatus to transmit a first ultrasonic wave by sending first electrical signals to a plurality of separate electrode elements proximate an ultrasonic transceiver layer. The method may involve receiving first electrode layer signals, corresponding to reflections of the first ultrasonic wave, from the electrode layer. The method may involve determining, based on the first electrode layer signals, a location of a target object in contact with the apparatus. The location of the target object may correspond with a proximate electrode element. The method may involve controlling the ultrasonic transceiver layer to transmit a second ultrasonic wave by sending second electrical signals to the proximate electrode element and for receiving receiver pixel signals from at least a portion of the plurality of ultrasonic receiver pixels in an area corresponding with the proximate electrode element.

公开(公告)号：US20200234021A1

公开(公告)日：2020-07-23

申请号：US16252408

申请日：2019-01-18

Applicant: QUALCOMM Incorporated

Inventor： Yipeng Lu ,  Hrishikesh Vijaykumar Panchawagh ,  Kostadin Dimitrov Djordjev ,  Chin-Jen Tseng ,  Nicholas Ian Buchan ,  Tsongming Kao ,  Jae Hyeong Seo

IPC: G06K9/00

Abstract: An ultrasonic fingerprint sensor system of the present disclosure may be provided with a thick electrically nonconductive acoustic layer and thin electrode layer coupled to a piezoelectric layer of an ultrasonic transmitter or transceiver. The thick electrically nonconductive acoustic layer may have a high density or high acoustic impedance value, and may be adjacent to the piezoelectric layer. The thin electrode layer may be divided into electrode segments. The ultrasonic fingerprint sensor system may use flexible or rigid substrates, and may use an ultrasonic transceiver or an ultrasonic transmitter separate from an ultrasonic receiver.