Patents by Inventor Christian Hardy

Christian Hardy 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).

  • Patent number: 10674253
    Abstract: This application describes a noise reduction apparatus (800) for a microphone device (100) having an acoustic port (110). The apparatus has a spectrum peak detect block (301) for receiving a microphone signal (SMIC) and determining, from the microphone signal, at least one characteristic of a resonance peak (202) associated with the acoustic port of the microphone. The at least one characteristic may comprise a resonance frequency (fH) and/or quality factor (QH). A noise reduction block (801) is configured to process the microphone signal based on the resonance characteristic so as to reduce noise in the processed microphone signal due to said resonance. The noise reduction block may apply a function which is the inverse of the determined resonance characteristic.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: June 2, 2020
    Assignee: Cirrus Logic, Inc.
    Inventors: John Paul Lesso, Emmanuel Philippe Christian Hardy
  • Patent number: 10567896
    Abstract: This application describes an apparatus (300) for monitoring for blockage of an acoustic (110) port of a microphone device (100). The apparatus has a spectrum peak detect block (301) for receiving a microphone signal (SMIC) and determining, from the microphone signal, a resonance frequency (fH) and a quality factor (QH) of a resonance (202) associated with the acoustic port. A condition monitoring block (302) is configured to determine any change in resonance frequency and quality factor and to determine a blockage status for the microphone based on said detect changes. The condition monitoring block identifies a change in blockage status if there is a change in quality factor.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: February 18, 2020
    Assignee: Cirrus Logic, Inc.
    Inventors: John Paul Lesso, Emmanuel Philippe Christian Hardy
  • Publication number: 20190261107
    Abstract: This application describes an apparatus (300) for monitoring for blockage of an acoustic (110) port of a microphone device (100). The apparatus has a spectrum peak detect block (301) for receiving a microphone signal (SMIC) and determining, from the microphone signal, a resonance frequency (fH) and a quality factor (QH) of a resonance (202) associated with the acoustic port. A condition monitoring block (302) is configured to determine any change in resonance frequency and quality factor and to determine a blockage status for the microphone based on said detect changes. The condition monitoring block identifies a change in blockage status if there is a change in quality factor.
    Type: Application
    Filed: February 14, 2019
    Publication date: August 22, 2019
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John Paul LESSO, Emmanuel Philippe Christian HARDY
  • Patent number: 10368178
    Abstract: This application relates to an apparatus (300) for monitoring an operating temperature condition of a microphone device (100) having an acoustic port (110). The apparatus includes a spectrum peak detect block (301) for receiving a microphone signal (SMIC) and determining, from the microphone signal, a resonance frequency (fH) and a quality factor (QH) of a resonance (202) associated with the acoustic port of the microphone. A condition monitoring block (302) is configured to determine any change in resonance frequency and quality factor with respect to respective reference values of resonance frequency and quality factor and to determine a temperature condition for the air temperature within the acoustic port based on said determined changes.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: July 30, 2019
    Assignee: Cirrus Logic, Inc.
    Inventors: John Paul Lesso, Emmanuel Philippe Christian Hardy
  • Patent number: 10237668
    Abstract: This application describes an apparatus (300) for monitoring for blockage of an acoustic (110) port of a microphone device (100). The apparatus has a spectrum peak detect block (301) for receiving a microphone signal (SMIC) and determining, from the microphone signal, a resonance frequency (fH) and a quality factor (QH) of a resonance (202) associated with the acoustic port. A condition monitoring block (302) is configured to determine any change in resonance frequency and quality factor and to determine a blockage status for the microphone based on said detect changes. The condition monitoring block identifies a change in blockage status if there is a change in quality factor.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: March 19, 2019
    Assignee: Cirrus Logic, Inc.
    Inventors: John Paul Lesso, Emmanuel Philippe Christian Hardy
  • Patent number: 10177718
    Abstract: This application relates to audio amplifier circuitry (100). An amplifier module (103) is located in a signal path between an input (101) and an output (102). A detection module (106) is configured to detect a characteristic of a load (104) electrically coupled, in use, to the output. A distortion setting controller (107) is provided for selecting one of a plurality of stored distortion settings {pi} based on the detected characteristic of the load; and a pre-distortion module (105) is configured to apply a first transfer function to a signal in the signal path prior to said amplifier module. The first transfer function is based on the selected distortion setting and for at least one of the stored distortion settings the corresponding first transfer function comprises a non-linear distortion function.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: January 8, 2019
    Assignee: Cirrus Logic, Inc.
    Inventors: John Paul Lesso, Emmanuel Philippe Christian Hardy
  • Publication number: 20180288545
    Abstract: This application relates to an apparatus (300) for monitoring an operating temperature condition of a microphone device (100) having an acoustic port (110). The apparatus includes a spectrum peak detect block (301) for receiving a microphone signal (SMIC) and determining, from the microphone signal, a resonance frequency (fH) and a quality factor (QH) of a resonance (202) associated with the acoustic port of the microphone. A condition monitoring block (302) is configured to determine any change in resonance frequency and quality factor with respect to respective reference values of resonance frequency and quality factor and to determine a temperature condition for the air temperature within the acoustic port based on said determined changes.
    Type: Application
    Filed: March 26, 2018
    Publication date: October 4, 2018
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John Paul LESSO, Emmanuel Philippe Christian HARDY
  • Publication number: 20180288523
    Abstract: This application describes a noise reduction apparatus (800) for a microphone device (100) having an acoustic port (110). The apparatus has a spectrum peak detect block (301) for receiving a microphone signal (SMIC) and determining, from the microphone signal, at least one characteristic of a resonance peak (202) associated with the acoustic port of the microphone. The at least one characteristic may comprise a resonance frequency (fH) and/or quality factor (QH). A noise reduction block (801) is configured to process the microphone signal based on the resonance characteristic so as to reduce noise in the processed microphone signal due to said resonance. The noise reduction block may apply a function which is the inverse of the determined resonance characteristic.
    Type: Application
    Filed: March 26, 2018
    Publication date: October 4, 2018
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John Paul LESSO, Emmanuel Philippe Christian HARDY
  • Publication number: 20180288546
    Abstract: This application describes an apparatus (300) for monitoring for blockage of an acoustic (110) port of a microphone device (100). The apparatus has a spectrum peak detect block (301) for receiving a microphone signal (SMIC) and determining, from the microphone signal, a resonance frequency (fH) and a quality factor (QH) of a resonance (202) associated with the acoustic port. A condition monitoring block (302) is configured to determine any change in resonance frequency and quality factor and to determine a blockage status for the microphone based on said detect changes. The condition monitoring block identifies a change in blockage status if there is a change in quality factor.
    Type: Application
    Filed: March 26, 2018
    Publication date: October 4, 2018
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John Paul LESSO, Emmanuel Philippe Christian HARDY
  • Patent number: 10070223
    Abstract: This application relates to circuitry for processing sense signals generated by MEMS capacitive transducers for compensating for distortion in such sense signals. The circuitry has a signal path between an input (204) for receiving the sense signal and an output (205) for outputting an output signal based on said sense signal. Compensation circuitry (206, 207) is configured to monitor the signal at a first point along the signal path and generate a correction signal (Scorr); and modify the signal at at least a second point along said signal path based on said correction signal. The correction signal is generated as a function of the value of the signal at the first point along the signal path so as to introduce compensation components into the output signal that compensate for distortion components in the sense signal. The first point in the signal path may be before or after the second point in the signal path.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: September 4, 2018
    Assignee: Cirrus Logic, Inc.
    Inventors: John Paul Lesso, Emmanuel Philippe Christian Hardy, James Thomas Deas, Toru Ido
  • Publication number: 20180152198
    Abstract: This application relates to analogue-to-digital converters (ADCs). An ADC 200 has a first converter (201) for receiving an analogue input signal (AIN) and outputting a time encode signal (DT), such as a pulse-width-modulated (PWM) signal, based on input signal and a first conversion gain setting (GIN). In some embodiments the first converter has a PWM modulator (401) for generating a PWM signal such that the input signal is encoded by pulse widths that can vary continuously in time. A second converter (202) receives the time encoded signal and outputs a digital output signal (DOUT) based on the time encoded signal (DT) and a second conversion gain setting (GO). The second converter may have a first PWM-to-digital modulator (403). A gain allocation block (204) generates the first and second conversion gain settings based on the time encoded signal (DT).
    Type: Application
    Filed: January 24, 2018
    Publication date: May 31, 2018
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John Paul LESSO, Emmanuel Philippe Christian HARDY
  • Publication number: 20180123530
    Abstract: This application relates to audio amplifier circuitry (100). An amplifier module (103) is located in a signal path between an input (101) and an output (102). A detection module (106) is configured to detect a characteristic of a load (104) electrically coupled, in use, to the output. A distortion setting controller (107) is provided for selecting one of a plurality of stored distortion settings {pi} based on the detected characteristic of the load; and a pre-distortion module (105) is configured to apply a first transfer function to a signal in the signal path prior to said amplifier module. The first transfer function is based on the selected distortion setting and for at least one of the stored distortion settings the corresponding first transfer function comprises a non-linear distortion function.
    Type: Application
    Filed: December 29, 2017
    Publication date: May 3, 2018
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John Paul LESSO, Emmanuel Philippe Christian HARDY
  • Patent number: 9923574
    Abstract: This application relates to analog-to-digital converters (ADCs). An ADC 200 has a first converter (201) for receiving an analog input signal (AIN) and outputting a time encode signal (DT), such as a pulse-width-modulated (PWM) signal, based on input signal and a first conversion gain setting (GIN). In some embodiments the first converter has a PWM modulator (401) for generating a PWM signal such that the input signal is encoded by pulse widths that can vary continuously in time. A second converter (202) receives the time encoded signal and outputs a digital output signal (DOUT) based on the time encoded signal (DT) and a second conversion gain setting (GO). The second converter may have a first PWM-to-digital modulator (403). A gain allocation block (204) generates the first and second conversion gain settings based on the time encoded signal (DT).
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: March 20, 2018
    Assignee: Cirrus Logic, Inc.
    Inventors: John Paul Lesso, Emmanuel Philippe Christian Hardy
  • Patent number: 9866180
    Abstract: This application relates to audio amplifier circuitry (100). An amplifier module (103) is located in a signal path between an input (101) and an output (102). A detection module (106) is configured to detect a characteristic of a load (104) electrically coupled, in use, to the output. A distortion setting controller (107) is provided for selecting one of a plurality of stored distortion settings {pi} based on the detected characteristic of the load; and a pre-distortion module (105) is configured to apply a first transfer function to a signal in the signal path prior to said amplifier module. The first transfer function is based on the selected distortion setting and for at least one of the stored distortion settings the corresponding first transfer function comprises a non-linear distortion function.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: January 9, 2018
    Assignee: Cirrus Logic, Inc.
    Inventors: John Paul Lesso, Emmanuel Philippe Christian Hardy
  • Publication number: 20170346501
    Abstract: This application relates to analogue-to-digital converters (ADCs). An ADC 200 has a first converter (201) for receiving an analogue input signal (AIN) and outputting a time encode signal (DT), such as a pulse-width-modulated (PWM) signal, based on input signal and a first conversion gain setting (GIN). In some embodiments the first converter has a PWM modulator (401) for generating a PWM signal such that the input signal is encoded by pulse widths that can vary continuously in time. A second converter (202) receives the time encoded signal and outputs a digital output signal (DOUT) based on the time encoded signal (DT) and a second conversion gain setting (GO). The second converter may have a first PWM-to-digital modulator (403). A gain allocation block (204) generates the first and second conversion gain settings based on the time encoded signal (DT).
    Type: Application
    Filed: July 28, 2017
    Publication date: November 30, 2017
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John Paul LESSO, Emmanuel Philippe Christian HARDY
  • Publication number: 20170284825
    Abstract: This application relates to circuitry for processing sense signals generated by MEMS capacitive transducers for compensating for distortion in such sense signals. The circuitry has a signal path between an input (204) for receiving the sense signal and an output (205) for outputting an output signal based on said sense signal. Compensation circuitry (206, 207) is configured to monitor the signal at a first point along the signal path and generate a correction signal (Scorr); and modify the signal at at least a second point along said signal path based on said correction signal. The correction signal is generated as a function of the value of the signal at the first point along the signal path so as to introduce compensation components into the output signal that compensate for distortion components in the sense signal. The first point in the signal path may be before or after the second point in the signal path.
    Type: Application
    Filed: June 20, 2017
    Publication date: October 5, 2017
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John Paul LESSO, Emmanuel Philippe Christian HARDY, James Thomas DEAS, Toru IDO
  • Patent number: 9748971
    Abstract: This application relates to analogue-to-digital converters (ADCs). An ADC 200 has a first converter (201) for receiving an analogue input signal (AIN) and outputting a time encode signal (DT), such as a pulse-width-modulated (PWM) signal, based on input signal and a first conversion gain setting (GIN). In some embodiments the first converter has a PWM modulator (401) for generating a PWM signal such that the input signal is encoded by pulse widths that can vary continuously in time. A second converter (202) receives the time encoded signal and outputs a digital output signal (DOUT) based on the time encoded signal (DT) and a second conversion gain setting (GO). The second converter may have a first PWM-to-digital modulator (403). A gain allocation block (204) generates the first and second conversion gain settings based on the time encoded signal (DT).
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: August 29, 2017
    Assignee: Cirrus Logic International Semiconductor Ltd.
    Inventors: John Paul Lesso, Emmanuel Philippe Christian Hardy
  • Patent number: 9716945
    Abstract: This application relates to circuitry for processing sense signals generated by MEMS capacitive transducers for compensating for distortion in such sense signals. The circuitry has a signal path between an input (204) for receiving the sense signal and an output (205) for outputting an output signal based on said sense signal. Compensation circuitry (206, 207) is configured to monitor the signal at a first point along the signal path and generate a correction signal (Scorr); and modify the signal at at least a second point along said signal path based on said correction signal. The correction signal is generated as a function of the value of the signal at the first point along the signal path so as to introduce compensation components into the output signal that compensate for distortion components in the sense signal. The first point in the signal path may be before or after the second point in the signal path.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: July 25, 2017
    Assignee: Cirrus Logic International Semiconductor Ltd.
    Inventors: John Paul Lesso, Emmanuel Philippe Christian Hardy, James Thomas Deas, Toru Ido
  • Publication number: 20160359500
    Abstract: This application relates to analogue-to-digital converters (ADCs). An ADC 200 has a first converter (201) for receiving an analogue input signal (AIN) and outputting a time encode signal (DT), such as a pulse-width-modulated (PWM) signal, based on input signal and a first conversion gain setting (GIN). In some embodiments the first converter has a PWM modulator (401) for generating a PWM signal such that the input signal is encoded by pulse widths that can vary continuously in time. A second converter (202) receives the time encoded signal and outputs a digital output signal (DOUT) based on the time encoded signal (DT) and a second conversion gain setting (GO). The second converter may have a first PWM-to-digital modulator (403). A gain allocation block (204) generates the first and second conversion gain settings based on the time encoded signal (DT).
    Type: Application
    Filed: August 22, 2016
    Publication date: December 8, 2016
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John Paul LESSO, Emmanuel Philippe Christian HARDY
  • Publication number: 20160329867
    Abstract: This application relates to audio amplifier circuitry (100). An amplifier module (103) is located in a signal path between an input (101) and an output (102). A detection module (106) is configured to detect a characteristic of a load (104) electrically coupled, in use, to the output. A distortion setting controller (107) is provided for selecting one of a plurality of stored distortion settings {pi} based on the detected characteristic of the load; and a pre-distortion module (105) is configured to apply a first transfer function to a signal in the signal path prior to said amplifier module. The first transfer function is based on the selected distortion setting and for at least one of the stored distortion settings the corresponding first transfer function comprises a non-linear distortion function.
    Type: Application
    Filed: May 8, 2015
    Publication date: November 10, 2016
    Inventors: John Paul Lesso, Emmanuel Philippe Christian Hardy