公开(公告)号：US20220175258A1

公开(公告)日：2022-06-09

申请号：US17247323

申请日：2020-12-07

Applicant: QUALCOMM Incorporated

Inventor： Jack Conway KITCHENS ,  John Keith SCHNEIDER ,  Evan Michael BRELOFF ,  Emily Kathryn BROOKS ,  Stephen Michael GOJEVIC ,  Fitzgerald JOHN ARCHIBALD ,  Alexei STOIANOV ,  Shounak Uday GORE ,  Nicholas Ian BUCHAN

IPC: A61B5/021 ,  A61B5/00

Abstract: Some disclosed methods involve controlling, via a control system, a light source system to emit a plurality of light pulses into biological tissue at a pulse repetition frequency, the biological tissue including blood and blood vessels at depths within the biological tissue. Such methods may involve receiving, by the control system, signals from the piezoelectric receiver corresponding to acoustic waves emitted from portions of the biological tissue, the acoustic waves corresponding to photoacoustic emissions from the blood and the blood vessels caused by the plurality of light pulses. Such methods may involve detecting, by the control system, heart rate waveforms in the signals, determining, by the control system, a first subset of detected heart rate waveforms corresponding to vein heart rate waveforms and determining, by the control system, a second subset of detected heart rate waveforms corresponding to artery heart rate waveforms.

公开(公告)号：US20210034895A1

公开(公告)日：2021-02-04

申请号：US16526658

申请日：2019-07-30

Applicant: QUALCOMM Incorporated

Inventor： Fitzgerald JOHN ARCHIBALD ,  Jin GU ,  Alexei STOIANOV ,  Shounak Uday GORE ,  John SCHNEIDER

IPC: G06K9/00 ,  G06F21/32 ,  G06K9/62

Abstract: Techniques for improving the integrity and performance of biometric security processes on data processing devices are provided. An example of a method of determining a liveness of a biometric input according to the disclosure includes obtaining inquiry image information, obtaining enrollment image information, determining alignment information based on the inquiry image information and the enrollment image information, determining an overlap area based on the alignment information, determining anti-spoofing features based on the overlap area within the inquiry image information and the enrollment image information, and outputting a liveness score based on the anti-spoofing features.

公开(公告)号：US20240161884A1

公开(公告)日：2024-05-16

申请号：US18055230

申请日：2022-11-14

Applicant: QUALCOMM Incorporated

Inventor： Emily Kathryn BROOKS ,  Collin D'SOUZA ,  John Keith SCHNEIDER ,  Alexei STOIANOV ,  Shounak Uday GORE ,  Rathin RADHAKRISHNAN NAIR

IPC: G16H10/60 ,  G06K9/62

CPC classification number: G16H10/60 ,  G06K9/6232

Abstract: Systems and techniques are described herein for user identification. For instance, a technique can include receiving at least one biosignal from a sensor, the at least one biosignal indicative of a blood perfusion of a user. The technique can further include extracting at least one feature from the at least one biosignal, comparing the extracted at least one feature to at least one template feature associated with an enrolled user, determining, based on comparing the extracted at least one feature to the at least one template feature, whether the user matches the enrolled user, and outputting an indication of whether the user matches the enrolled user.