Patents by Inventor David P. Singleton

David P. Singleton 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: 11881826
    Abstract: The present disclosure relates to circuitry comprising audio amplifier circuitry for receiving an audio signal to be amplified; and first and second output nodes for outputting first and second differential output signals. The circuitry further comprises common mode buffer circuitry configured to receive a common mode voltage and to selectively output the common mode voltage to the first and second output nodes.
    Type: Grant
    Filed: January 6, 2021
    Date of Patent: January 23, 2024
    Assignee: Cirrus Logic Inc.
    Inventors: David P. Singleton, Andrew J. Howlett, John B. Bowlerwell
  • Publication number: 20230353111
    Abstract: An integrated circuit (IC), comprising: a first input pin for receiving a first input signal; a first converter configured to convert the first input signal to a first output signal; a first gain stage configured to apply a first gain to the first output signal; gain update circuitry configured to: output a first external gain control signal to a first output pin of the IC; and subsequently output a first internal gain control signal to the first gain stage to update the first gain of the first gain stage, wherein output of the first internal gain control signal is delayed relative to output of the first external gain control signal by a first predetermined delay, the first predetermined delay to compensate for signal chain delay between the first input pin and the first gain stage.
    Type: Application
    Filed: November 8, 2022
    Publication date: November 2, 2023
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Andrew J. HOWLETT, Michael CHANDLER-PAGE, David P. SINGLETON, Erich P. ZWYSSIG
  • Patent number: 11799426
    Abstract: Class D amplifier circuitry comprising: input buffer circuitry configured to receive a first digital input signal modulated according to a first modulation scheme in which the digital input signal can take a first plurality N of discrete signal levels; analog modulator circuitry configured to generate an analog modulated signal based on an analog output signal output by the input buffer circuitry; and quantizer circuitry configured to generate an output signal based on the analog modulated signal, wherein the output signal is modulated according to a second modulation scheme in which the output signal can take a second plurality M of discrete signal levels, wherein the second plurality M is greater than the first plurality N.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: October 24, 2023
    Assignee: Cirrus Logic Inc.
    Inventors: Johnny Klarenbeek, David P. Singleton, Morgan T. Prior, Jonathan T. Wigner, Christopher M. Dougherty, Qi Cai, Anindya Bhattacharya
  • Publication number: 20230299575
    Abstract: An integrated circuit (IC), comprising: a converter comprising: one or more core devices; and one or more output internal nodes, each internal node coupled to one of the one or more core devices; protection circuitry comprising: one or more isolation switches, each of the one or more isolation switches coupled between a respective one of the one or more internal output nodes and a respective output external pin of the IC, wherein the protection circuitry configured to: monitor a characteristic at each respective external output pin of the IC; and if the characteristic is outside an operating specification of the one or more core devices, open one or more of the one or more isolation switches to isolate one or more of the one or more core devices from the respective external pin of the IC.
    Type: Application
    Filed: March 14, 2023
    Publication date: September 21, 2023
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: David P. SINGLETON, Andrew J. HOWLETT, Sharjeel RIAZ, John B. BOWLERWELL
  • Publication number: 20230170850
    Abstract: Class D amplifier circuitry comprising: input buffer circuitry configured to receive a first digital input signal modulated according to a first modulation scheme in which the digital input signal can take a first plurality N of discrete signal levels; analog modulator circuitry configured to generate an analog modulated signal based on an analog output signal output by the input buffer circuitry; and quantizer circuitry configured to generate an output signal based on the analog modulated signal, wherein the output signal is modulated according to a second modulation scheme in which the output signal can take a second plurality M of discrete signal levels, wherein the second plurality M is greater than the first plurality N.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 1, 2023
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Johnny KLARENBEEK, David P. SINGLETON, Morgan T. PRIOR, Jonathan T. WIGNER, Christopher M. DOUGHERTY, Qi CAI, Anindya BHATTACHARYA
  • Publication number: 20230112412
    Abstract: The subject matter of this specification can be embodied in, among other things, a method that includes receiving geographical information derived from a non-verbal user action associated with a first computing device. The non-verbal user action implies an interest of a user in a geographic location. The method also includes identifying a grammar associated with the geographic location using the derived geographical information and outputting a grammar indicator for use in selecting the identified grammar for voice recognition processing of vocal input from the user.
    Type: Application
    Filed: December 13, 2022
    Publication date: April 13, 2023
    Applicant: Google LLC
    Inventors: David P. Singleton, Debajit Ghosh
  • Patent number: 11588452
    Abstract: Class D amplifier circuitry comprising: modulator circuitry; and output stage circuitry, wherein the modulator circuitry is configured to: receive an input signal and first and second carrier signals, wherein the second carrier signal is offset in amplitude with respect to the first carrier signal; generate first and second modulated output signals, each of the first and second modulated output signals being based on the input signal and the first and second carrier signals; and generate a plurality of control signals for the output stage circuitry per signal period of the modulated output signals, wherein the plurality of control signals are based on the first and second modulated output signals, and wherein at least one of the plurality of control signals per signal period comprises a signal level transition.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: February 21, 2023
    Assignee: Cirrus Logic, Inc.
    Inventors: John P. Lesso, David P. Singleton
  • Patent number: 11538459
    Abstract: The subject matter of this specification can be embodied in, among other things, a method that includes receiving geographical information derived from a non-verbal user action associated with a first computing device. The non-verbal user action implies an interest of a user in a geographic location. The method also includes identifying a grammar associated with the geographic location using the derived geographical information and outputting a grammar indicator for use in selecting the identified grammar for voice recognition processing of vocal input from the user.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: December 27, 2022
    Assignee: Google LLC
    Inventors: David P. Singleton, Debajit Ghosh
  • Patent number: 11528031
    Abstract: This application relates to ADC circuitry. An ADC circuit (200) has first and second conversion paths (201a, 201b) for converting analogue signals to digital and is operable in first and second modes. In the first mode, the first and second conversion paths are connected to respective first and second input nodes (202a, 202b) to receive and convert full scale first and second analogue input signals (Ain1, Ain2) to separate digital outputs (Dout1, Dout2). In the second mode, the first and second conversion paths are both connected to the first input node (202a), to convert the first analogue input signal (Ain1) to respective first and second digital signals, and the first and second conversion paths are configured for processing different signal levels of the first analogue input signal. A selector (207) select the first digital signal or the second digital to be output as an output signal based on an indication of amplitude of the first analogue input signal.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: December 13, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Andrew J. Howlett, David P. Singleton, Aniruddha Satoskar
  • Publication number: 20220278658
    Abstract: Class D amplifier circuitry comprising: modulator circuitry; and output stage circuitry, wherein the modulator circuitry is configured to: receive an input signal and first and second carrier signals, wherein the second carrier signal is offset in amplitude with respect to the first carrier signal; generate first and second modulated output signals, each of the first and second modulated output signals being based on the input signal and the first and second carrier signals; and generate a plurality of control signals for the output stage circuitry per signal period of the modulated output signals, wherein the plurality of control signals are based on the first and second modulated output signals, and wherein at least one of the plurality of control signals per signal period comprises a signal level transition.
    Type: Application
    Filed: February 26, 2021
    Publication date: September 1, 2022
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John P. LESSO, David P. SINGLETON
  • Publication number: 20220121719
    Abstract: In general, the subject matter described in this specification can be embodied in methods, systems, and program products for receiving user input that defines a search query, and providing the search query to a server system. Information that a search engine system determined was responsive to the search query is received at a computing device. The computing device is identified as in a first state, and a first output mode for audibly outputting at least a portion of the information is selected. The first output mode is selected from a collection of the first output mode and a second output mode. The second output mode is selected in response to the computing device being in a second state and is for visually outputting at least the portion of the information and not audibly outputting the at least portion of the information. At least the portion of information is audibly output.
    Type: Application
    Filed: December 29, 2021
    Publication date: April 21, 2022
    Applicant: Google LLC
    Inventors: John Nicholas Jifkoff, Michael J. Lebeau, William J. Byme, David P. Singleton
  • Patent number: 11216522
    Abstract: In general, the subject matter described in this specification can be embodied in methods, systems, and program products for receiving user input that defines a search query, and providing the search query to a server system. Information that a search engine system determined was responsive to the search query is received at a computing device. The computing device is identified as in a first state, and a first output mode for audibly outputting at least a portion of the information is selected. The first output mode is selected from a collection of the first output mode and a second output mode. The second output mode is selected in response to the computing device being in a second state and is for visually outputting at least the portion of the information and not audibly outputting the at least portion of the information. At least the portion of information is audibly output.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: January 4, 2022
    Assignee: Google LLC
    Inventors: John Nicholas Jitkoff, Michael J. Lebeau, William J. Byrne, David P. Singleton
  • Publication number: 20210273646
    Abstract: This application relates to ADC circuitry. An ADC circuit (200) has first and second conversion paths (201a, 201b) for converting analogue signals to digital and is operable in first and second modes. In the first mode, the first and second conversion paths are connected to respective first and second input nodes (202a, 202b) to receive and convert full scale first and second analogue input signals (Ain1, Ain2) to separate digital outputs (Dout1, Dout2). In the second mode, the first and second conversion paths are both connected to the first input node (202a), to convert the first analogue input signal (Ain1) to respective first and second digital signals, and the first and second conversion paths are configured for processing different signal levels of the first analogue input signal. A selector (207) select the first digital signal or the second digital to be output as an output signal based on an indication of amplitude of the first analogue input signal.
    Type: Application
    Filed: February 24, 2021
    Publication date: September 2, 2021
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Andrew J. HOWLETT, David P. SINGLETON, Aniruddha SATOSKAR
  • Publication number: 20210242847
    Abstract: The present disclosure relates to circuitry comprising audio amplifier circuitry for receiving an audio signal to be amplified; and first and second output nodes for outputting first and second differential output signals. The circuitry further comprises common mode buffer circuitry configured to receive a common mode voltage and to selectively output the common mode voltage to the first and second output nodes.
    Type: Application
    Filed: January 6, 2021
    Publication date: August 5, 2021
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: David P. SINGLETON, Andrew J. HOWLETT, John B. BOWLERWELL
  • Publication number: 20200201924
    Abstract: In general, the subject matter described in this specification can be embodied in methods, systems, and program products for receiving user input that defines a search query, and providing the search query to a server system. Information that a search engine system determined was responsive to the search query is received at a computing device. The computing device is identified as in a first state, and a first output mode for audibly outputting at least a portion of the information is selected. The first output mode is selected from a collection of the first output mode and a second output mode. The second output mode is selected in response to the computing device being in a second state and is for visually outputting at least the portion of the information and not audibly outputting the at least portion of the information. At least the portion of information is audibly output.
    Type: Application
    Filed: March 5, 2020
    Publication date: June 25, 2020
    Applicant: Google LLC
    Inventors: John Nicholas Jitkoff, Michael J. Lebeau, William J. Byrne, David P. Singleton
  • Patent number: 10621253
    Abstract: In general, the subject matter described in this specification can be embodied in methods, systems, and program products for receiving user input that defines a search query, and providing the search query to a server system. Information that a search engine system determined was responsive to the search query is received at a computing device. The computing device is identified as in a first state, and a first output mode for audibly outputting at least a portion of the information is selected. The first output mode is selected from a collection of the first output mode and a second output mode. The second output mode is selected in response to the computing device being in a second state and is for visually outputting at least the portion of the information and not audibly outputting the at least portion of the information. At least the portion of information is audibly output.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: April 14, 2020
    Assignee: Google LLC
    Inventors: John Nicholas Jitkoff, Michael J. LeBeau, William J. Byrne, David P. Singleton
  • Patent number: 10599729
    Abstract: In general, the subject matter described in this specification can be embodied in methods, systems, and program products for receiving user input that defines a search query, and providing the search query to a server system. Information that a search engine system determined was responsive to the search query is received at a computing device. The computing device is identified as in a first state, and a first output mode for audibly outputting at least a portion of the information is selected. The first output mode is selected from a collection of the first output mode and a second output mode. The second output mode is selected in response to the computing device being in a second state and is for visually outputting at least the portion of the information and not audibly outputting the at least portion of the information. At least the portion of information is audibly output.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: March 24, 2020
    Assignee: Google LLC
    Inventors: John Nicholas Jitkoff, Michael J. LeBeau, William J. Byrne, David P. Singleton
  • Publication number: 20200043472
    Abstract: The subject matter of this specification can be embodied in, among other things, a method that includes receiving geographical information derived from a non-verbal user action associated with a first computing device. The non-verbal user action implies an interest of a user in a geographic location. The method also includes identifying a grammar associated with the geographic location using the derived geographical information and outputting a grammar indicator for use in selecting the identified grammar for voice recognition processing of vocal input from the user.
    Type: Application
    Filed: August 13, 2019
    Publication date: February 6, 2020
    Inventors: David P. Singleton, Debajit Ghosh
  • Patent number: 10510338
    Abstract: The subject matter of this specification can be embodied in, among other things, a method that includes receiving geographical information derived from a non-verbal user action associated with a first computing device. The non-verbal user action implies an interest of a user in a geographic location. The method also includes identifying a grammar associated with the geographic location using the derived geographical information and outputting a grammar indicator for use in selecting the identified grammar for voice recognition processing of vocal input from the user.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: December 17, 2019
    Assignee: Google LLC
    Inventors: David P. Singleton, Debajit Ghosh
  • Patent number: 10496714
    Abstract: In general, the subject matter described in this specification can be embodied in methods, systems, and program products for receiving user input that defines a search query, and providing the search query to a server system. Information that a search engine system determined was responsive to the search query is received at a computing device. The computing device is identified as in a first state, and a first output mode for audibly outputting at least a portion of the information is selected. The first output mode is selected from a collection of the first output mode and a second output mode. The second output mode is selected in response to the computing device being in a second state and is for visually outputting at least the portion of the information and not audibly outputting the at least portion of the information. At least the portion of information is audibly output.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: December 3, 2019
    Assignee: Google LLC
    Inventors: John Nicholas Jitkoff, Michael J. Lebeau, William J. Byrne, David P. Singleton