公开(公告)号：US20210248403A1

公开(公告)日：2021-08-12

申请号：US17182388

申请日：2021-02-23

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Thomas Ivan HARVEY ,  Vitaliy SAPOZHNYKOV ,  Brenton POTTER

IPC: G06K9/03 ,  G06K9/00 ,  G06F21/32

Abstract: Described embodiments relate to a method operable in a biometric authentication system. The method comprises initiating generation of an acoustic stimulus for application to a user's ear; and determining a quality measure of a response signal to the acoustic stimulus. Responsive to determining that the quality measure is inadequate for performing a biometric process, the method comprises one or more of: (i) modifying one or more properties of the acoustic stimulus to improve a signal to noise ratio, SNR, of the response signal and (ii) cancelling the effect of noise from outside the ear on the response signal of the user's ear to the acoustic stimulus to improve the SNR of the response signal.

公开(公告)号：US20200342082A1

公开(公告)日：2020-10-29

申请号：US16861589

申请日：2020-04-29

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Vitaliy SAPOZHNYKOV ,  Thomas Ivan HARVEY ,  Brenton POTTER ,  David WATTS

IPC: G06F21/32 ,  G06K9/62 ,  H04R1/10

Abstract: Embodiments of the disclosure relate to methods, apparatus and systems for authentication of a user. The described embodiments relate to obtaining ear biometric data for a user to be authenticated. The ear biometric data comprises one or more features characteristic of the user's ear canal and an associated fit metric indicative of a positioning of a personal audio device relative to the user's ear canal, the personal audio device comprising a transducer for application of acoustic stimulus to the user's ear to obtain the ear biometric data. The user may be identified as a particular authorised user based on one or more features and the associated fit metric.

公开(公告)号：US20200342246A1

公开(公告)日：2020-10-29

申请号：US16833935

申请日：2020-03-30

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Thomas Ivan HARVEY ,  Vitaliy SAPOZHNYKOV ,  Brenton POTTER

IPC: G06K9/03 ,  G06F21/32 ,  G06K9/00

Abstract: Described embodiments relate to a method operable in a biometric authentication system. The method comprises initiating generation of an acoustic stimulus for application to a user's ear; and determining a quality measure of a response signal to the acoustic stimulus. Responsive to determining that the quality measure is inadequate for performing a biometric process, the method comprises one or more of: (i) modifying one or more properties of the acoustic stimulus to improve a signal to noise ratio, SNR, of the response signal and (ii) cancelling the effect of noise from outside the ear on the response signal of the user's ear to the acoustic stimulus to improve the SNR of the response signal.