Patents by Inventor Anthony S. Doy
Anthony S. Doy 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: 20240155948Abstract: 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: ApplicationFiled: January 11, 2024Publication date: May 9, 2024Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: John P. LESSO, Anthony S. DOY
-
Patent number: 11937509Abstract: The present disclosure relates to circuitry for driving a piezoelectric transducer. The circuitry comprises pre-processor circuitry configured to process an input 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 signal based on the determined resonant frequency so as to generate the processed signal.Type: GrantFiled: November 18, 2020Date of Patent: March 19, 2024Assignee: Cirrus Logic Inc.Inventors: John P. Lesso, Anthony S. Doy
-
Patent number: 11914781Abstract: A touch-sensitive user input device comprising: a first electrode layer comprising a first plurality of electrodes; a second electrode layer comprising a second plurality of electrodes; an insulating layer disposed between the first electrode layer and the second electrode layer; and at least one piezoelectric transducer, wherein an electrode of the at least one piezoelectric transducer is coupled to the first plurality of electrodes of the first electrode layer.Type: GrantFiled: October 3, 2022Date of Patent: February 27, 2024Assignee: Cirrus Logic Inc.Inventor: Anthony S. Doy
-
Publication number: 20230412976Abstract: The application describes a switched driver (401) for outputting a drive signal at an output node (402) to drive a load such as a transducer. The driver receives respective high-side and low-side voltages (VinH, VinL) defining an input voltage at first and second input nodes and has connections for first and second capacitors (403H, 403L). A network of switching paths is configured such that each of the first and second capacitors can be selectively charged to the input voltage, the first input node can be selectively coupled to a first node (N1) by a path that include or bypass the first capacitor, and the second input node can be selectively coupled to a second node (N2) by a path that includes or bypasses the second capacitor. The output node (402) can be switched between two switching voltages at the first or second nodes. The driver is selectively operable in different operating modes, where the switching voltages are different in each of said modes.Type: ApplicationFiled: September 1, 2023Publication date: December 21, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Anthony S. DOY, Eric J. KING
-
Patent number: 11847906Abstract: A system may include an electromagnetic load capable of generating a haptic event and a haptic processor configured to receive at least one first parameter indicative of a desired perception of the haptic event to a user of a device comprising the electromagnetic load, receive at least one second parameter indicative of one or more characteristics of the device, and process the at least one first parameter and the at least one second parameter to generate a driving signal to the electromagnetic load in order to produce the desired perception to the user despite variances in the device that cause an actual perception of the haptic event to vary from the desired perception.Type: GrantFiled: April 25, 2022Date of Patent: December 19, 2023Assignee: Cirrus Logic Inc.Inventors: Jeffrey D. Alderson, John L. Melanson, Anthony S. Doy, Eric Lindemann
-
Patent number: 11836290Abstract: A system may include at least one resistive-inductive-capacitive sensor and a control circuit configured to maintain timing parameters for operation of the at least one resistive-inductive-capacitive sensor and vary at least one of the timing parameters to control a spectrum associated with the at least one resistive-inductive-capacitive sensor, wherein the spectrum comprises one of a sensor activity spectrum of the at least one resistive-inductive-capacitive sensor and a current usage spectrum associated with electrical current delivered to the at least one resistive-inductive-capacitive sensor from a source of electrical energy.Type: GrantFiled: January 25, 2021Date of Patent: December 5, 2023Assignee: Cirrus Logic Inc.Inventors: Michael A. Kost, Bruce E. Duewer, Tejasvi Das, Matthew Beardsworth, Anthony S. Doy
-
Publication number: 20230381814Abstract: This application relates to methods and apparatus for driving a transducer with switching drivers. A driver circuit has first and second switching drivers for driving the transducer in a bridge-tied-load configuration, each of the switching drivers having a respective output stage for controllably switching the respective driver output node between high and low switching voltages with a controlled duty cycle. Each of switching drivers is operable in a plurality of different driver modes, wherein the switching voltages are different in said different driver modes. A controller controls the driver mode of operation and the duty cycle of the switching drivers based on the input signal. The controller is configured to control the duty cycles of the first and second switching drivers within defined minimum and maximum limits of duty cycles; and to transition between driver modes of operation when the duty cycle of one of the switching drivers reaches a duty cycle limit.Type: ApplicationFiled: May 25, 2023Publication date: November 30, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Axel THOMSEN, Eric J. KING, Anthony S. DOY, Thomas H. HOFF, John L. MELANSON
-
Patent number: 11791816Abstract: This application relates to methods and apparatus for driving a transducer with switching drivers. A switching driver has first and second supply node for receiving supply voltages and includes an output bridge stage, a capacitor and a network of switches. The network of switches is operable in different switch states to provide different switching voltages to the output bridge stage. A controller is configured to control the switch state of the network of switches and a duty cycle of output switches of the output bridge stage based on an input signal to generate an output signal for driving the transducer.Type: GrantFiled: February 2, 2022Date of Patent: October 17, 2023Assignee: Cirrus Logic Inc.Inventors: Axel Thomsen, Eric J. King, Anthony S. Doy, Thomas H. Hoff, John L. Melanson
-
Patent number: 11792569Abstract: The application describes a switched driver (401) for outputting a drive signal at an output node (402) to drive a load such as a transducer. The driver receives respective high-side and low-side voltages (VinH, VinL) defining an input voltage at first and second input nodes and has connections for first and second capacitors (403H, 403L). A network of switching paths is configured such that each of the first and second capacitors can be selectively charged to the input voltage, the first input node can be selectively coupled to a first node (N1) by a path that include or bypass the first capacitor, and the second input node can be selectively coupled to a second node (N2) by a path that includes or bypasses the second capacitor. The output node (402) can be switched between two switching voltages at the first or second nodes. The driver is selectively operable in different operating modes, where the switching voltages are different in each of said modes.Type: GrantFiled: January 26, 2023Date of Patent: October 17, 2023Assignee: Cirrus Logic Inc.Inventors: Anthony S. Doy, Eric J. King
-
Patent number: 11684950Abstract: This application relates to methods and apparatus for driving a transducer with switching drivers. A driver circuit has first and second switching drivers for driving the transducer in a bridge-tied-load configuration, each of the switching drivers having a respective output stage for controllably switching the respective driver output node between high and low switching voltages with a controlled duty cycle. Each of switching drivers is operable in a plurality of different driver modes, wherein the switching voltages are different in said different driver modes. A controller controls the driver mode of operation and the duty cycle of the switching drivers based on the input signal. The controller is configured to control the duty cycles of the first and second switching drivers within defined minimum and maximum limits of duty cycles; and to transition between driver modes of operation when the duty cycle of one of the switching drivers reaches a duty cycle limit.Type: GrantFiled: May 7, 2021Date of Patent: June 27, 2023Assignee: Cirrus Logic, Inc.Inventors: Axel Thomsen, Eric J. King, Anthony S. Doy, Thomas H. Hoff, John L. Melanson
-
Publication number: 20230196889Abstract: Embodiments described herein relate to methods and apparatus for outputting a haptic signal to a haptic transducer. A method for triggering a haptic signal being output to a haptic transducer comprises receiving an audio signal for output through an audio output transducer; determining whether the audio signal comprises a haptic trigger based on an indication of a rate of change of an amplitude of the audio signal, and responsive to determining that the audio signal comprises a haptic trigger, triggering the haptic signal to be output to the haptic transducer.Type: ApplicationFiled: February 16, 2023Publication date: June 22, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Anthony S. DOY, Nermin OSMANOVIC, Carl L. STÅHL
-
Publication number: 20230170712Abstract: A battery pack comprising: a set of N parallel-coupled switched cell strings, each switched cell string comprising a cell and a switch for selectively coupling a first terminal of the cell to a first terminal of the battery pack.Type: ApplicationFiled: November 16, 2022Publication date: June 1, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: John P. LESSO, Anthony S. DOY
-
Publication number: 20230171540Abstract: The application describes a switched driver (401) for outputting a drive signal at an output node (402) to drive a load such as a transducer. The driver receives respective high-side and low-side voltages (VinH, VinL) defining an input voltage at first and second input nodes and has connections for first and second capacitors (403H, 403L). A network of switching paths is configured such that each of the first and second capacitors can be selectively charged to the input voltage, the first input node can be selectively coupled to a first node (N1) by a path that include or bypass the first capacitor, and the second input node can be selectively coupled to a second node (N2) by a path that includes or bypasses the second capacitor. The output node (402) can be switched between two switching voltages at the first or second nodes. The driver is selectively operable in different operating modes, where the switching voltages are different in each of said modes.Type: ApplicationFiled: January 26, 2023Publication date: June 1, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Anthony S. DOY, Eric J. KING
-
Publication number: 20230143709Abstract: A solid state keyboard device comprising a user interaction layer for receiving a user input and a plurality of haptic actuators, wherein the solid state keyboard device is operable to cause one or more of the plurality of haptic actuators to generate a haptic output at the user interaction layer in response to a received user input, wherein one or more parameters of the haptic output are variable according to one or more parameters of or associated with the received user input.Type: ApplicationFiled: November 9, 2022Publication date: May 11, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Thomas LORENZ, Anthony S. DOY, Nathan A. JOHANNINGSMEIER
-
Publication number: 20230139722Abstract: A touch-sensitive user input device comprising: a first electrode layer comprising a first plurality of electrodes; a second electrode layer comprising a second plurality of electrodes; an insulating layer disposed between the first electrode layer and the second electrode layer; and at least one piezoelectric transducer, wherein an electrode of the at least one piezoelectric transducer is coupled to the first plurality of electrodes of the first electrode layer.Type: ApplicationFiled: October 3, 2022Publication date: May 4, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventor: Anthony S. DOY
-
Patent number: 11636742Abstract: Embodiments described herein relate to methods and apparatus for outputting a haptic signal to a haptic transducer. A method for triggering a haptic signal being output to a haptic transducer comprises receiving an audio signal for output through an audio output transducer; determining whether the audio signal comprises a haptic trigger based on an indication of a rate of change of an amplitude of the audio signal, and responsive to determining that the audio signal comprises a haptic trigger, triggering the haptic signal to be output to the haptic transducer.Type: GrantFiled: September 25, 2020Date of Patent: April 25, 2023Assignee: Cirrus Logic, Inc.Inventors: Anthony S. Doy, Nermin Osmanovic, Carl L. Ståhl
-
Publication number: 20230082721Abstract: A system may include an array of sensor elements, the array of sensor elements each comprising a first type of passive reactive element, a second type of passive reactive element electrically coupled to the array of sensor elements, a driver configured to drive the array of sensor elements and the second type of passive reactive element, and control circuitry configured to control enabling and disabling of individual sensor elements of the array of sensor elements to ensure no more than one of the array of sensor elements is enabled at a time such that when one of the array of sensor elements is enabled, the one of the array of sensor elements and the second type of passive reactive element together operate as a resonant sensor.Type: ApplicationFiled: November 3, 2022Publication date: March 16, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Jason L. WARDLAW, Michael A. KOST, Anthony S. DOY, Tejasvi DAS, Siddharth MARU, Xin ZHAO, Matthew BEARDSWORTH, Bruce E. DUEWER
-
Patent number: 11606642Abstract: The application describes a switched driver (401) for outputting a drive signal at an output node (402) to drive a load such as a transducer. The driver receives respective high-side and low-side voltages (VinH, VinL) defining an input voltage at first and second input nodes and has connections for first and second capacitors (403H, 403L). A network of switching paths is configured such that each of the first and second capacitors can be selectively charged to the input voltage, the first input node can be selectively coupled to a first node (N1) by a path that include or bypass the first capacitor, and the second input node can be selectively coupled to a second node (N2) by a path that includes or bypasses the second capacitor. The output node (402) can be switched between two switching voltages at the first or second nodes. The driver is selectively operable in different operating modes, where the switching voltages are different in each of said modes.Type: GrantFiled: June 9, 2021Date of Patent: March 14, 2023Assignee: Cirrus Logic, Inc.Inventors: Anthony S. Doy, Eric J. King
-
Patent number: 11594958Abstract: Driver circuitry for driving a load based on an input signal, comprising: at least one variable boost stage comprising: first and second input nodes configured to receive a first voltage and a second voltage respectively; first and second flying capacitor nodes for connection to a flying capacitor therebetween; a network of switching paths for selectively connecting the first and second input nodes with the first and second flying capacitor nodes; an output stage for selectively connecting a driver output node to each of the first and second flying capacitor nodes; and a controller operable in a first boost mode to: control the output stage to selectively connect the driver output node to the first flying capacitor node; control the network of switching paths to switch connection of the second flying capacitor node between the first and second input nodes at a controlled duty cycle; and in a first charge top-up cycle, control the network of switching paths to connect the first input node to the first flying cType: GrantFiled: November 30, 2021Date of Patent: February 28, 2023Assignee: Cirrus Logic, Inc.Inventors: Eric J. King, Axel Thomsen, Anthony S. Doy, Thomas H. Hoff, John L. Melanson
-
Publication number: 20230053745Abstract: Balancing circuitry for balancing cells in first and second modules of a battery pack, wherein the first module comprises a first plurality of cells and the second module comprises a second plurality of cells, the balancing circuitry comprising: first cell balancing circuitry operative to balance the first plurality of cells of the first module; and second cell balancing circuitry operative to balance the second plurality of cells of the second module, wherein the second cell balancing circuitry is further operative to balance at least one cell of the first plurality of cells of the first module with at least one cell of the second plurality of cells of the second module.Type: ApplicationFiled: August 4, 2022Publication date: February 23, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: John P. LESSO, Toru IDO, Anthony S. DOY