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公开(公告)号：US20220001421A1
公开(公告)日：2022-01-06
申请号：US16921369
申请日：2020-07-06
Inventor： John Paul LESSO , Toru IDO
IPC: B06B1/02
Abstract: The present disclosure relates to driver circuitry for driving a piezoelectric transducer. The circuitry comprises: a power supply; a reservoir capacitance; switch network circuitry; and control circuitry. The control circuitry is configured to control operation of the switch network circuitry so as to charge the reservoir capacitance from the power supply and to transfer charge between the reservoir capacitance and the piezoelectric transducer.
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公开(公告)号：US20210288807A1
公开(公告)日：2021-09-16
申请号：US17253765
申请日：2018-10-01
Inventor： Michael PAGE , John Paul LESSO
IPC: H04L9/32
Abstract: There is described a system and method for performing biometric authentication, preferably voice biometric authentication. The system has a host device such as a mobile phone and a coupled headset device. The headset device is arranged to receive audio, and to cryptographically protect the audio before transmission to the host device for verification and biometric authentication.
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公开(公告)号：US20210064729A1
公开(公告)日：2021-03-04
申请号：US17036223
申请日：2020-09-29
Inventor： John Paul LESSO
Abstract: Embodiments of the disclosure include methods, apparatus and computer programs for detecting the proximity of an ear to an audio device. In one embodiment, the disclosure provides a system for detecting the presence of an ear in proximity to an audio device. The system comprises: an input for obtaining a data signal from the environment of the audio device; and an ear biometric authentication module configured to: compare one or more ear biometric features, extracted from the data signal, to an ear biometric template; and generate a first output indicative of the presence or absence of any ear in proximity to the audio device based on the comparison of the one or more extracted ear biometric features to the ear biometric template.
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公开(公告)号：US20210034730A1
公开(公告)日：2021-02-04
申请号：US17074743
申请日：2020-10-20
Inventor： John Paul LESSO
IPC: G06F21/32 , H04L9/32 , G10L25/03 , G10L17/02 , H04K1/00 , H04L29/06 , G06F21/55 , H04W12/12 , G01R33/00 , G10L15/24 , G10L17/26
Abstract: In order to detect a replay attack in a speaker recognition system, at least one feature is identified in a detected magnetic field. It is then determined whether the at least one identified feature of the detected magnetic field is indicative of playback of speech through a loudspeaker. If so, it is determined that a replay attack may have taken place.
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公开(公告)号：US20210028787A1
公开(公告)日：2021-01-28
申请号：US16934304
申请日：2020-07-21
Inventor： John Laurence PENNOCK , John Paul LESSO
IPC: H03K19/0948 , H03K19/003 , H03K17/16 , H03M1/00
Abstract: This application relates to control of semiconductor devices, in particular MOS devices, so as to reduce RTS/flicker noise. A circuit (100) includes a first MOS device (103, 104) and a bias controller (107). The circuit is operable in at least a first circuit state (PRO) in which the first MOS device is active to contribute to a first signal (Sout) and a second circuit state (PRST) in which the first MOS device does not contribute to the first signal. The bias controller is operable to control voltages at one or more terminals of the first MOS device to apply a pre-bias (VRB1, VPB2) during an instance of the second circuit state. The pre-bias is applied to set an occupancy state of charge carriers traps within the first MOS device, to limit noise during subsequent operation in the first circuit state. In embodiments, the bias controller is configured so that at least one parameter of the pre-bias is selectively variable in use based on one or more operating conditions.
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Patent Agency Ranking
公开(公告)号：US20210026939A1
公开(公告)日：2021-01-28
申请号：US17034816
申请日：2020-09-28
Inventor： John Paul LESSO , John FORSYTH
IPC: G06F21/32 , G06F3/16 , H04R1/10 , G10K11/178
Abstract: The present invention relates to methods, apparatus and systems for audio playback via a personal audio device following a biometric process. A personal audio device may be used to obtain ear model data for authenticating a user via an ear biometric authentication system. Owing to that successful authentication, the electronic device is informed of the person who is listening to audio playback from the device. Thus the device can implement one or more playback settings which are specific to that authorised user.
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公开(公告)号：US20200342079A1
公开(公告)日：2020-10-29
申请号：US16834047
申请日：2020-03-30
Inventor： Thomas Ivan HARVEY , John Paul LESSO
Abstract: A method for use in a biometric process, comprising: for a first function and a second function, applying an acoustic stimulus to a user's ear; and for the second function: receiving a response signal of a user's ear to the acoustic stimulus; and extracting, from the response signal, one or more features for use in a biometric process, wherein the first function is a function other than to induce the response signal for use in the biometric process.
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公开(公告)号：US20200327402A1
公开(公告)日：2020-10-15
申请号：US16788737
申请日：2020-02-12
Inventor： John Paul LESSO
Abstract: The present disclosure relates to a neuron for an artificial neural network. The neuron comprises a dot product engine operative to: receive a set of weights; receive a set of data inputs based on a set of input data signals; and calculate the dot product of the set of data inputs and the set of weights to generate a dot product engine output. The neuron further comprises an activation function module arranged to apply an activation function to a signal indicative of the dot product engine output to generate a neuron output; and gain control circuitry. The gain control circuitry is operative to control: an input gain applied to the input data signals to generate the set of data inputs; and an output gain applied to the dot product engine output or by the activation function module. The output gain is selected to compensate for the applied input gain.
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公开(公告)号：US20200302042A1
公开(公告)日：2020-09-24
申请号：US16822885
申请日：2020-03-18
Inventor： John Paul LESSO , William E. SHERWOOD , Patrick BARDSLEY , Khaled LAKHDHAR
Abstract: A biometric processor comprises: one or more inputs configured to receive first ear biometric data acquired in respect of a first ear of a user and second ear biometric data acquired in respect of a second ear of the user; a processing module configured to perform a biometric algorithm on the first ear biometric data and the second ear biometric data, based on a comparison of the first ear biometric data to a first stored ear biometric template for an authorised user and a comparison of the second ear biometric data to a second stored ear biometric template for the authorised user, to obtain respective first and second biometric scores; a fusion module configured to apply first and second weights to the respective first and second biometric scores to obtain first and second weighted biometric scores, and to combine at least the first and second weighted biometric scores to generate an overall biometric score, wherein the first and second weights are different to each other; and wherein a biometric result is based on the overall biometric score.
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公开(公告)号：US20200227071A1
公开(公告)日：2020-07-16
申请号：US16829800
申请日：2020-03-25
Inventor： John Paul LESSO
Abstract: A method of determining whether a received signal may result from a replay attack comprises receiving an audio signal representing speech, obtaining information about a channel affecting the audio signal, and determining whether the channel has at least one characteristic of a loudspeaker.
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