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公开(公告)号：US20210344311A1
公开(公告)日：2021-11-04
申请号：US17378861
申请日：2021-07-19
Inventor： John Paul LESSO , Toru IDO
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：US20210279317A1
公开(公告)日：2021-09-09
申请号：US17191425
申请日：2021-03-03
Inventor： John Paul LESSO
IPC: G06F21/32 , G10K11/178 , G06F16/23 , G06F21/40 , G10L17/00
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：US20210257405A1
公开(公告)日：2021-08-19
申请号：US17308695
申请日：2021-05-05
Inventor： John Paul LESSO
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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公开(公告)号：US20210134318A1
公开(公告)日：2021-05-06
申请号：US17065179
申请日：2020-10-07
Inventor： Thomas Ivan HARVEY , John Paul LESSO , William Erik SHERWOOD , Fredrick D. GEIGER
Abstract: A method for use in a biometric process, comprising: with a headset in a known acoustic environment, applying an acoustic stimulus at a first transducer of the headset; receiving a response signal at a second transducer of the headset, the response signal comprising a component of the acoustic stimulus reflected at an obstacle in the acoustic path of the first transducer; determining a condition of the headset based on the response signal; and performing the biometric process based on the determined condition.
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公开(公告)号：US20210103819A1
公开(公告)日：2021-04-08
申请号：US17012664
申请日：2020-09-04
Inventor： John Paul LESSO
Abstract: The present disclosure relates to an artificial neural network (ANN) computing system comprising: a buffer configured to store data indicative of input data received from an input device; an inference engine operative to process data from the buffer to generate an interest metric for the input data; and a controller. The controller is operative to control a mode of operation of the inference engine according to the interest metric for the input data.
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Patent Agency Ranking
公开(公告)号：US20210051399A1
公开(公告)日：2021-02-18
申请号：US17021156
申请日：2020-09-15
Inventor： John Paul LESSO
Abstract: Audio circuitry, comprising: a speaker driver operable to drive a speaker based on a speaker signal; a current monitoring unit operable to monitor a speaker current flowing through the speaker and generate a monitor signal indicative of that current; and a microphone signal generator operable, when external sound is incident on the speaker, to generate a microphone signal representative of the external sound based on the monitor signal and the speaker signal.
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公开(公告)号：US20200380955A1
公开(公告)日：2020-12-03
申请号：US16876373
申请日：2020-05-18
Inventor： John Paul LESSO
Abstract: A method of own voice detection is provided for a user of a device. A first signal is detected, representing air-conducted speech using a first microphone of the device. A second signal is detected, representing bone-conducted speech using a bone-conduction sensor of the device. The first signal is filtered to obtain a component of the first signal at a speech articulation rate, and the second signal is filtered to obtain a component of the second signal at the speech articulation rate. The component of the first signal at the speech articulation rate and the component of the second signal at the speech articulation rate are compared, and it is determined that the speech has not been generated by the user of the device, if a difference between the component of the first signal at the speech articulation rate and the component of the second signal at the speech articulation rate exceeds a threshold value.
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公开(公告)号：US20200380350A1
公开(公告)日：2020-12-03
申请号：US16844551
申请日：2020-04-09
Inventor： John Paul LESSO
Abstract: The present disclosure relates to a neural network system comprising: a data input configured to receive an input data signal and analog neural network circuitry having an input coupled with the data input. The analog neural network circuitry is operative to apply a weight to a signal received at its input to generate a weighted output signal. The neural network system further comprises compensation circuitry configured to apply a compensating term to the input data signal to compensate for error in the analog neural network circuitry.
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公开(公告)号：US20200311534A1
公开(公告)日：2020-10-01
申请号：US16820921
申请日：2020-03-17
Inventor： John Paul LESSO
Abstract: The present disclosure relates to a neuron for an artificial neural network. The neuron includes: a first dot product engine operative to: receive a first set of weights; receive a set of inputs; and calculate the dot product of the set of inputs and the first set of weights to generate a first dot product engine output. The neuron further includes a second dot product engine operative to: receive a second set of weights; receive an input based on the first dot product engine output; and generate a second dot product engine output based on the product of the first dot product engine output and a weight of the second set of weights. The neuron further includes an activation function module arranged to generate a neuron output based on the second dot product engine output. The first dot product engine and the second dot product engine are structurally or functionally different.
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公开(公告)号：US20200219522A1
公开(公告)日：2020-07-09
申请号：US16803703
申请日：2020-02-27
Inventor： John Paul LESSO , Peter John FRITH , John Laurence PENNOCK
IPC: G10L19/16 , H04L25/49 , G10L19/002
Abstract: This application relates to methods and apparatus for transfer of multiple digital data streams, especially of digital audio data over a single communications link such as a single wire. The application describes audio interface circuitry comprising a pulse-length-modulation (PLM) modulator (204). The PLM is responsive to a plurality of data streams (PDM-R, PDM-L), to generate a series of data pulses (PLM) with a single data pulse having a rising and falling edge in each of a plurality of transfer periods defined by a first clock signal (TCLK). The timing of the rising and falling edge of each data pulse is dependent upon on a combination of the then current data samples from the plurality of data streams. The duration and position of the data pulse in the transfer window in effect defines a data symbol encoding the data. Circuitry for receiving and extracting the data is also disclosed. An interface receives the stream of data pulses (PLM) and data extraction circuitry (202) samples the data pulse to determine which of the possible data symbols the pulse represents and determines a data value for at least one received data stream.
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