Patents by Inventor John P. Lesso

John P. Lesso has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250149057
    Abstract: A method for diagnosing a condition of a first headset enclosed in a headset enclosure. The method comprises playing a first audio stimulus through a first speaker of the headset; detecting a first response signal derived by a first transducer; and determining a condition of the first speaker and/or first transducer based on the first response signal.
    Type: Application
    Filed: January 7, 2025
    Publication date: May 8, 2025
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Thomas I. HARVEY, John P. LESSO
  • Publication number: 20250127432
    Abstract: A glucose monitoring system comprising: a glucose sensor configured to output a glucose sensor output signal indicative of an estimate of a glucose level of a user of the glucose monitoring system; a movement sensor configured to output a movement sensor output signal indicative of detected movement of the user; and a controller configured to generate an estimate of a current glucose level of the user based on the glucose sensor output signal and the movement sensor output signal.
    Type: Application
    Filed: October 11, 2024
    Publication date: April 24, 2025
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventor: John P. LESSO
  • Publication number: 20250127406
    Abstract: A system for potassium measurement comprising: a chemical sensor configured to output a chemical sensor output signal indicative of a first estimate of a potassium level of a user of the system; a cardiac sensor configured to output a cardiac sensor output signal indicative of a second estimate of the potassium level of the user; and a controller configured to generate an output indicative of the potassium level of the user based on the first and second estimates.
    Type: Application
    Filed: October 11, 2024
    Publication date: April 24, 2025
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventor: John P. LESSO
  • Publication number: 20250119110
    Abstract: A modulator integrated circuit (IC) package comprising: signal modulator circuitry; and power modulator circuitry, wherein the signal modulator circuitry is configured to receive an input signal and to supply a modulated output signal to output stage circuitry external to the modulator IC package, and wherein the power modulator circuitry is configured to control power converter circuitry, external to the modulator IC package, operative to provide a supply voltage to the output stage circuitry.
    Type: Application
    Filed: October 6, 2023
    Publication date: April 10, 2025
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John P. LESSO, Michael ROBINSON
  • Publication number: 20250116691
    Abstract: Circuitry for determining one or more characteristics of an electrochemical cell comprising a first working electrode, a second working electrode and a counter electrode, the circuitry comprising: drive circuitry configured to: apply a first stimulus to the first working electrode; apply a compensation stimulus to one or more of the first working electrode, the second working electrode and the counter electrode; measurement circuitry configured to: measure a first signal at the first working electrode; and measure a second signal at the second working electrode; and processing circuitry configured to: determine the one or more characteristics of the electrochemical cell based on the first signal or the second signal, wherein the compensation stimulus is applied to compensate for cross talk between the first working electrode and the second working electrode.
    Type: Application
    Filed: October 5, 2023
    Publication date: April 10, 2025
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John P. LESSO, Salvatore CAPORALE
  • Patent number: 12267016
    Abstract: A buck-boost converter for converting an input voltage at an input node into an output voltage at an output node, the converter comprising: first and second inductor nodes for connection of an inductor therebetween; a first converter stage coupled between the input node and the first inductor node; and a second converter stage coupled between the second inductor node and the output node, wherein one or more of the first converter stage and the second converter stage comprises a switching network, comprising: a first switch for selectively connecting a first flying capacitor node to a stage input node; a second switch for selectively connecting the first flying capacitor node to a stage output node; a third switch for selectively connecting a second flying capacitor node to the stage output node; and a fourth switch for selectively connecting the second flying capacitor node to a reference voltage, the first and second flying capacitor nodes for connection of a flying capacitor therebetween.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: April 1, 2025
    Assignee: Cirrus Logic Inc.
    Inventor: John P. Lesso
  • Publication number: 20250088186
    Abstract: A switching transducer driver operable in: a first mode in which first and second output stage switches are controlled to generate a two-level output signal, wherein an impedance of the first output stage switch is substantially the same as an impedance of the second output stage switch; and a second mode in which the first and second output stage switches and a third switch are controlled to generate a three-level output signal, wherein an impedance of the third switch is substantially greater than the impedance of the first output stage switch and the second output stage switch.
    Type: Application
    Filed: November 15, 2024
    Publication date: March 13, 2025
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John P. LESSO, Douglas J.W. MACFARLANE
  • Publication number: 20250076244
    Abstract: Circuitry for detecting application of an electrochemical sensor to a subject, the electrochemical sensor comprising an ion-selective electrode and a first potentiostatic electrode, the circuitry comprising: measurement circuitry configured to: measure a ion-selective signal at the ion-selective electrode; measure a potentiostatic signal at the first potentiostatic electrode; processing circuitry configured to: detect application of the electrochemical sensor to the subject based on the ion-selective signal and the potentiostatic signal.
    Type: Application
    Filed: August 23, 2024
    Publication date: March 6, 2025
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventor: John P. LESSO
  • Patent number: 12223980
    Abstract: A method for diagnosing a condition of a first headset enclosed in a headset enclosure. The method comprises playing a first audio stimulus through a first speaker of the headset; detecting a first response signal derived by a first transducer; and determining a condition of the first speaker and/or first transducer based on the first response signal.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: February 11, 2025
    Assignee: Cirrus Logic Inc.
    Inventors: Thomas I. Harvey, John P. Lesso
  • Publication number: 20250030387
    Abstract: This application relates to methods and apparatus for switching drivers. The switching driver has first and second switches for selectively connecting an output node to first and second switching voltages respectively to generate a first output voltage. A compensator is configured to receive a first monitor signal indicative of a sum of the first and second switching voltages and a second monitor signal indicative of a difference between the first and second switching voltages and to apply compensation to the input signal based on the first and second monitor signals so as to compensate for variations in the first and second switching voltages from defined nominal values of the first and second switching voltages. A modulator controls a duty cycle of the first and second switches based on the input signal after said compensation has been applied.
    Type: Application
    Filed: July 21, 2023
    Publication date: January 23, 2025
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John P. LESSO, Douglas J.W. MACFARLANE, John L. MELANSON
  • Publication number: 20250020608
    Abstract: Circuitry for determining one or more characteristics of an electrochemical cell comprising a first working electrode and a counter electrode, the circuitry comprising: drive circuitry configured to apply a first stimulus to the first working electrode; measurement circuitry configured to measure a first response at the first working electrode; and processing circuitry configured to: applying compensation to the first response to obtain a first corrected response of the electrochemical cell to the first stimulus; and determine a first characteristic of the one or more characteristics of the electrochemical cell based on the first corrected response, the first characteristic associated with the first working electrode.
    Type: Application
    Filed: July 13, 2023
    Publication date: January 16, 2025
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John P. LESSO, Ivan PERRY
  • Publication number: 20250024688
    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. There is further described programmable resistance cells using charge-trapping-transistors (CTTs) and analog signal processing circuits using CTTs to provide tuneability.
    Type: Application
    Filed: September 30, 2024
    Publication date: January 16, 2025
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John P. LESSO, James T. DEAS
  • Publication number: 20250005344
    Abstract: The present disclosure relates to a neuron for an artificial neural network, the neuron comprising: a first dot product engine and a second dot product engine. The first dot product engine is 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 second dot product engine is operative to: receive a second set of weights; receive the set of inputs; and calculate the dot product of the set of inputs and the second set of weights to generate a second dot product engine output. The neuron further comprises a combiner operative to combine the first dot product engine output and the second dot product engine output to generate a combined output, and an activation function module arranged to apply an activation function to the combined output to generate a neuron output.
    Type: Application
    Filed: September 11, 2024
    Publication date: January 2, 2025
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Anthony MAGRATH, John P. LESSO
  • Patent number: 12184272
    Abstract: A switching transducer driver operable in: a first mode in which first and second output stage switches are controlled to generate a two-level output signal, wherein an impedance of the first output stage switch is substantially the same as an impedance of the second output stage switch; and a second mode in which the first and second output stage switches and a third switch are controlled to generate a three-level output signal, wherein an impedance of the third switch is substantially greater than the impedance of the first output stage switch and the second output stage switch.
    Type: Grant
    Filed: April 27, 2023
    Date of Patent: December 31, 2024
    Assignee: Cirrus Logic Inc.
    Inventors: John P. Lesso, Douglas J. W. Macfarlane
  • Patent number: 12169418
    Abstract: This application relates to voltage regulators and, particular, to low-dropout regulators (LDOs). The regulator (300) has an output stage (102) which receives an input voltage (Vin) and outputs an output voltage (Vout) and which includes at least one transistor (103) as an output device configured to pass an output current to the output, based on a drive voltage (V1). A differential amplifier (101) is configured to receive a feedback signal derived from the output voltage and also a reference voltage (REF) to generate an amplifier output to control the drive voltage (V1) to minimise any difference between the feedback signal and the reference voltage. A controller (301) is operable to selectively reconfigure the output stage to provide a change in output current in response to a load activity signal (ACT), which is indicative of a change in load activity that results in a change in load current demand for a load connected, in use, to the output.
    Type: Grant
    Filed: May 25, 2023
    Date of Patent: December 17, 2024
    Assignee: Cirrus Logic Inc.
    Inventors: John L. Melanson, John P. Lesso
  • Publication number: 20240411019
    Abstract: Circuitry comprising excitation circuitry for supplying a transducer with an excitation signal to generate a detection signal and current monitor circuitry for monitoring current through the transducer.
    Type: Application
    Filed: August 15, 2024
    Publication date: December 12, 2024
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John P. LESSO, Claire MOTION
  • Patent number: 12167696
    Abstract: The present disclosure relates to circuitry for driving a piezoelectric transducer to generate an audio output. The circuitry comprises pre-processor circuitry configured to process an input audio signal to generate a processed signal; driver circuitry coupled to the pre-processor circuitry and configured to generate a drive signal, based on the processed signal, for driving the piezoelectric transducer; and processor circuitry configured to determine a resonant frequency of the piezoelectric transducer. The pre-processor circuitry is configured to process the input audio signal based on the determined resonant frequency so as to generate the processed signal.
    Type: Grant
    Filed: January 11, 2024
    Date of Patent: December 10, 2024
    Assignee: Cirrus Logic Inc.
    Inventors: John P. Lesso, Anthony S. Doy
  • Patent number: 12149256
    Abstract: This application describes method and apparatus for data conversion. An analogue-to-digital converter circuit receives an analogue input signal (SIN) and outputs a digital output signal (SOUT) The circuit has a sampling capacitor, a controlled oscillator and a counter for generating a count value based on a number of oscillations in an output of the controlled oscillator in a count period during a read-out phase. The digital output signal is based on the count value. The converter circuit is operable in a sampling phase and the read-out phase. In the sampling phase, the sampling capacitor is coupled to an input node for the input signal, e.g. via switch. In the read-out phase, the sampling capacitor is coupled to the controlled oscillator, e.g. via switch, such that capacitor powers the first controlled oscillator and a frequency of oscillation in the output of the first controlled oscillator depends on the voltage of the first capacitor.
    Type: Grant
    Filed: July 20, 2022
    Date of Patent: November 19, 2024
    Assignee: Cirrus Logic Inc.
    Inventor: John P. Lesso
  • Patent number: 12144606
    Abstract: A method of cough detection in a headset, the method comprising: receiving a first signal from an external transducer of the headset; receiving a second signal from an in-ear transducer of the headset; and detecting a cough of a user of the headset based on the first and second signals.
    Type: Grant
    Filed: January 8, 2024
    Date of Patent: November 19, 2024
    Assignee: Cirrus Logic Inc.
    Inventors: John P. Lesso, Yanto Suryono, Toru Ido
  • Publication number: 20240377353
    Abstract: Circuitry for processing an analyte signal obtained from an electrochemical cell, the circuitry comprising: a first input node for receiving the analyte signal; measurement circuitry having a first signal path coupled to the first input node, the measurement circuitry configured to output an output signal based on the analyte signal, the measurement circuitry comprising a first circuit element having a first impedance, the first circuit element coupled to the first signal path; and control circuitry configured to reset one or more first voltages in the first signal path of the measurement circuitry to a respective first reference value.
    Type: Application
    Filed: April 30, 2024
    Publication date: November 14, 2024
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John P. LESSO, James T. DEAS, Cedric ANDRIEU