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).
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Patent number: 11881826Abstract: 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: GrantFiled: January 6, 2021Date of Patent: January 23, 2024Assignee: Cirrus Logic Inc.Inventors: David P. Singleton, Andrew J. Howlett, John B. Bowlerwell
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Publication number: 20230353111Abstract: 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: ApplicationFiled: November 8, 2022Publication date: November 2, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Andrew J. HOWLETT, Michael CHANDLER-PAGE, David P. SINGLETON, Erich P. ZWYSSIG
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Patent number: 11799426Abstract: 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: GrantFiled: November 30, 2021Date of Patent: October 24, 2023Assignee: Cirrus Logic Inc.Inventors: Johnny Klarenbeek, David P. Singleton, Morgan T. Prior, Jonathan T. Wigner, Christopher M. Dougherty, Qi Cai, Anindya Bhattacharya
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Publication number: 20230299575Abstract: 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: ApplicationFiled: March 14, 2023Publication date: September 21, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: David P. SINGLETON, Andrew J. HOWLETT, Sharjeel RIAZ, John B. BOWLERWELL
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Publication number: 20230170850Abstract: 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: ApplicationFiled: November 30, 2021Publication date: June 1, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Johnny KLARENBEEK, David P. SINGLETON, Morgan T. PRIOR, Jonathan T. WIGNER, Christopher M. DOUGHERTY, Qi CAI, Anindya BHATTACHARYA
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Publication number: 20230112412Abstract: 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: ApplicationFiled: December 13, 2022Publication date: April 13, 2023Applicant: Google LLCInventors: David P. Singleton, Debajit Ghosh
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Patent number: 11588452Abstract: 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: GrantFiled: February 26, 2021Date of Patent: February 21, 2023Assignee: Cirrus Logic, Inc.Inventors: John P. Lesso, David P. Singleton
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Patent number: 11538459Abstract: 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: GrantFiled: August 13, 2019Date of Patent: December 27, 2022Assignee: Google LLCInventors: David P. Singleton, Debajit Ghosh
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Patent number: 11528031Abstract: 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: GrantFiled: February 24, 2021Date of Patent: December 13, 2022Assignee: Cirrus Logic, Inc.Inventors: Andrew J. Howlett, David P. Singleton, Aniruddha Satoskar
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Publication number: 20220278658Abstract: 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: ApplicationFiled: February 26, 2021Publication date: September 1, 2022Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: John P. LESSO, David P. SINGLETON
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Publication number: 20220121719Abstract: 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: ApplicationFiled: December 29, 2021Publication date: April 21, 2022Applicant: Google LLCInventors: John Nicholas Jifkoff, Michael J. Lebeau, William J. Byme, David P. Singleton
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Patent number: 11216522Abstract: 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: GrantFiled: March 5, 2020Date of Patent: January 4, 2022Assignee: Google LLCInventors: John Nicholas Jitkoff, Michael J. Lebeau, William J. Byrne, David P. Singleton
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Publication number: 20210273646Abstract: 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: ApplicationFiled: February 24, 2021Publication date: September 2, 2021Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Andrew J. HOWLETT, David P. SINGLETON, Aniruddha SATOSKAR
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Publication number: 20210242847Abstract: 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: ApplicationFiled: January 6, 2021Publication date: August 5, 2021Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: David P. SINGLETON, Andrew J. HOWLETT, John B. BOWLERWELL
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Publication number: 20200201924Abstract: 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: ApplicationFiled: March 5, 2020Publication date: June 25, 2020Applicant: Google LLCInventors: John Nicholas Jitkoff, Michael J. Lebeau, William J. Byrne, David P. Singleton
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Patent number: 10621253Abstract: 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: GrantFiled: March 16, 2017Date of Patent: April 14, 2020Assignee: Google LLCInventors: John Nicholas Jitkoff, Michael J. LeBeau, William J. Byrne, David P. Singleton
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Patent number: 10599729Abstract: 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: GrantFiled: February 5, 2016Date of Patent: March 24, 2020Assignee: Google LLCInventors: John Nicholas Jitkoff, Michael J. LeBeau, William J. Byrne, David P. Singleton
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Publication number: 20200043472Abstract: 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: ApplicationFiled: August 13, 2019Publication date: February 6, 2020Inventors: David P. Singleton, Debajit Ghosh
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Patent number: 10510338Abstract: 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: GrantFiled: December 14, 2016Date of Patent: December 17, 2019Assignee: Google LLCInventors: David P. Singleton, Debajit Ghosh
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Patent number: 10496714Abstract: 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: GrantFiled: August 6, 2010Date of Patent: December 3, 2019Assignee: Google LLCInventors: John Nicholas Jitkoff, Michael J. Lebeau, William J. Byrne, David P. Singleton