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公开(公告)号：US11831311B2
公开(公告)日：2023-11-28
申请号：US17536637
申请日：2021-11-29
Inventor： John Laurence Pennock , John Paul Lesso
IPC: H03K19/0948 , H03K17/16 , H03K19/003 , H03M1/00
CPC classification number: H03K19/0948 , H03K17/161 , H03K19/00346 , H03K19/00369 , H03M1/001
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 (VPB1, 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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公开(公告)号：US11749298B2
公开(公告)日：2023-09-05
申请号：US16404116
申请日：2019-05-06
Inventor： John Paul Lesso
Abstract: A detected sound signal may comprise speech or non-verbal sounds, and many non-verbal sounds contain health information. If the speech, or a non-verbal sound containing health information, was produced by an enrolled user, data relating to the sound can be stored in a storage element. A system also comprises a data modification block, for obfuscating received data to provide an obfuscated version of the stored data. The system then has a first access mechanism, for controlling access to the stored data such that only an authorised user can obtain access to said stored data, and a second access mechanism, for controlling access to said stored data such the second access mechanism only provides access to the obfuscated version of the stored data.
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公开(公告)号：US11735189B2
公开(公告)日：2023-08-22
申请号：US16255390
申请日：2019-01-23
Inventor： John Paul Lesso
Abstract: A method of speaker identification comprises receiving an audio signal representing speech; performing a first voice biometric process on the audio signal to attempt to identify whether the speech is the speech of an enrolled speaker; and, if the first voice biometric process makes an initial determination that the speech is the speech of an enrolled user, performing a second voice biometric process on the audio signal to attempt to identify whether the speech is the speech of the enrolled speaker. The second voice biometric process is selected to be more discriminative than the first voice biometric process.
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公开(公告)号：US11714888B2
公开(公告)日：2023-08-01
申请号：US17191425
申请日：2021-03-03
Inventor： John Paul Lesso
CPC classification number: G06F21/32 , G06F16/2379 , G06F21/40 , G10K11/17823 , G10L17/00 , G10K2210/1081 , G10K2210/3026 , G10K2210/3027 , G10L17/10 , G10L17/24
Abstract: Embodiments of the invention relate to methods, apparatus and systems for biometric processes. The methods include updating stored ear model data for a user following successful authentication of the user. The ear model data may be acquired using a personal audio device that generates an acoustic stimulus and detects a measured response. The acquisition of the ear model data may be responsive to a determination that the personal audio device is inserted into or placed adjacent to the user's ear. The acquisition of the ear model data may also be responsive to the determination that the personal audio device has not been removed from or moved away from the user's ear.
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公开(公告)号：US11696452B2
公开(公告)日：2023-07-04
申请号：US17308695
申请日：2021-05-05
Inventor： John Paul Lesso , Gordon James Bates
CPC classification number: H10B61/10 , G06N3/02 , G11C11/165 , H10N50/10
Abstract: There is described a two-terminal multi-level memristor element synthesised from binary memristors, which is configured to implement a variable resistance based on unary or binary code words. There is further described a circuit such as a synapse circuit implemented using a multi-level memristor element.
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Patent Agency Ranking
公开(公告)号：US11658623B2
公开(公告)日：2023-05-23
申请号：US17378861
申请日：2021-07-19
Inventor： John Paul Lesso , Toru Ido
CPC classification number: H03F3/2173 , H04R3/00 , H04R29/001 , H03F3/185 , H03F2200/03 , H03F2200/165 , H03F2200/168 , H03F2200/267 , H04R2499/11
Abstract: The present disclosure relates to Class D amplifier circuitry comprising a mode controller configured to dynamically adjust an operational switching mode of the Class D amplifier over a range between a Class AD mode and a Class BD mode.
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公开(公告)号：US11513010B2
公开(公告)日：2022-11-29
申请号：US17149444
申请日：2021-01-14
Inventor： John Paul Lesso , Gordon James Bates
Abstract: This application relates to methods and apparatus for temperature monitoring for integrated circuits, and in particular to temperature monitoring using a locked-loop circuits, e.g. FLLs, PLLs or DLLs. According to embodiments a locked-loop circuit includes a controlled signal timing module, wherein the timing properties of an output signal (SOUT, SFB) are dependent on a value of a control signal and on temperature. A controller compares a feedback signal (SFB) output from the timing module to a reference signal (SREF) and generates a control signal (SC) to maintain a desired timing relationship. A temperature monitor monitors temperature based on the value of the control signal. For FLLs and PLLs the signal timing module may be a controlled oscillator.
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公开(公告)号：US11487861B2
公开(公告)日：2022-11-01
申请号：US17167913
申请日：2021-02-04
Inventor： John Paul Lesso
Abstract: Embodiments of the disclosure provide a mechanism for performing a biometric algorithm on ear biometric data acquired from a user. The mechanism may be used for biometric authentication, or in-ear detect, for example. In one embodiment, a method is provided in which a quality metric of an input signal to a transducer and/or a signal on a return path from the transducer is monitored. One or more steps of a biometric process, comprising monitoring of a parameter related to an admittance of the transducer, comparison of the parameter to a stored profile for an authorised user, generation of a score based on the comparison, comparison of the score to one or more threshold values, and initiation of one or more actions, may be performed responsive to the quality metric meeting one or more criteria.
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公开(公告)号：US11475899B2
公开(公告)日：2022-10-18
申请号：US16506157
申请日：2019-07-09
Inventor： John Paul Lesso
Abstract: A method of speaker identification comprises receiving an audio signal representing speech; performing a first voice biometric process on the audio signal to attempt to identify whether the speech is the speech of an enrolled speaker; and, if the first voice biometric process makes an initial determination that the speech is the speech of an enrolled user, performing a second voice biometric process on the audio signal to attempt to identify whether the speech is the speech of the enrolled speaker. The second voice biometric process is selected to be more discriminative than the first voice biometric process.
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公开(公告)号：US11468899B2
公开(公告)日：2022-10-11
申请号：US16188629
申请日：2018-11-13
Inventor： John Paul Lesso , Ben Hopson
Abstract: A method of enrolling a user in a speaker recognition system comprises receiving a sample of the user's speech. A trial voice print is generated from the sample of the user's speech. A score is obtained relating to the trial voice print. The user is enrolled on the basis of the trial voice print only if the score meets a predetermined criterion.
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