Patents by Inventor Eric J. King

Eric J. King 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: 20240161160
    Abstract: Techniques described herein include providing payment and access infrastructure for an array of transportation services, such as a set of transit or mobility services that might be provided by one or more governments, public agencies, and/or other public entities. In one example, this disclosure describes a method that includes enabling, by a computing system, a user to register for mobility benefits using a verification system, wherein the mobility benefits are provided by a provider entity; receiving, by the computing system and from the verification system, information about the user; establishing, by the computing system, an account linked to the provider entity; detecting, by the computing system, a request to access mobility benefits; allocating, by the computing system, funds from the account to pay for the mobility benefits.
    Type: Application
    Filed: November 16, 2023
    Publication date: May 16, 2024
    Inventors: Anthony Adam Swider, III, Todd Thomas, William Bondar, Eric J. Miller, Robert Glenn Hamchuk, James D. Cahill, Benjamin Taylor, Young M Yang, Allison R. King
  • Patent number: 11980913
    Abstract: 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: Grant
    Filed: May 25, 2023
    Date of Patent: May 14, 2024
    Assignee: Cirrus Logic Inc.
    Inventors: Axel Thomsen, Eric J. King, Anthony S. Doy, Thomas H. Hoff, John L. Melanson
  • Publication number: 20240134325
    Abstract: A method for intelligently generating a stimulus for use in characterization of parameters of a model of a battery may include dynamically analyzing a current drawn from the battery by a load, based on analysis of the current, determining a sink current for augmenting the current drawn by the load, and generating the sink current based on a determined need to update the parameters.
    Type: Application
    Filed: April 27, 2023
    Publication date: April 25, 2024
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Samuel P. EBENEZER, Eric J. KING, Emmanuel A. MARCHAIS, Jon D. HENDRIX, Mohamed SABET
  • Publication number: 20240136930
    Abstract: A method for intelligently generating a stimulus for use in characterization of parameters of a model of a battery may include dynamically analyzing a current drawn from the battery by a load, based on analysis of the current, determining an augmented current for augmenting the current drawn by the load, and generating the augmented current based on a determined need to update the parameters.
    Type: Application
    Filed: August 24, 2023
    Publication date: April 25, 2024
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Samuel P. EBENEZER, Emmanuel A. MARCHAIS, Eric J. KING, John L. MELANSON
  • Publication number: 20240133957
    Abstract: A method for estimating equivalent circuit model parameters of a battery may include measuring a battery voltage across terminals of the battery and a battery current drawn from the battery, decomposing the battery voltage and the battery current into a plurality of sub-bands, each sub-band of the plurality of sub-bands based on a time constant that characterizes a temporal behavior of the battery, for each sub-band of the plurality of sub-bands, estimating an equivalent resistance for such sub-band based on a spectral content of the battery voltage and battery current for such sub-band, and estimating an open circuit voltage of the battery based at least on the spectral content of the battery voltage and battery current present in one of the plurality of sub-bands and the equivalent resistances of the plurality of sub-bands.
    Type: Application
    Filed: April 27, 2023
    Publication date: April 25, 2024
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Samuel P. EBENEZER, Emmanuel A. MARCHAIS, Eric J. KING
  • Patent number: 11962180
    Abstract: A power delivery system may include an inductive power converter comprising a shared connection to a shared voltage from a battery, multiple inductive phases, each of the multiple inductive phases configured to generate a respective voltage from the shared voltage, multiple regulated voltage connections, and one or more switches configured and arranged to selectively assign at least one of the multiple inductive phases to a regulated voltage connection selected from the multiple regulated voltage connections.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: April 16, 2024
    Assignee: Cirrus Logic Inc.
    Inventors: Emmanuel Marchais, Ross C. Morgan, Ivan Perry, Eric J. King
  • Publication number: 20240072559
    Abstract: A power management system for use in a device comprising a battery and one or more components configured to draw electrical energy from the battery may include a first power converter configured to electrically couple between charging circuitry configured to provide electrical energy for charging the battery and the one or more downstream components and a bidirectional power converter configured to electrically couple between the charging circuitry and the battery, wherein the bidirectional power converter is configured to transfer charge from the battery or transfer charge from the battery based on a power requirement of the one or more components and a power available from the first power converter.
    Type: Application
    Filed: November 7, 2023
    Publication date: February 29, 2024
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Ivan PERRY, Hasnain AKRAM, Eric J. KING
  • Patent number: 11909317
    Abstract: A system may include a power converter having a maximum allowable input power drawn from a power source, an energy storage element coupled to an output of the power converter at a top plate of the energy storage element, wherein the energy storage element is configured to store excess energy, and control circuitry configured to, when an input power of the power converter exceeds the maximum allowable input power, cause excess energy stored in the energy storage element to be consumed by circuitry coupled to the output of the power converter, and in order to maintain positive voltage headroom for the circuitry coupled to the output of the power converter, selectively couple a bottom plate of the energy storage element to the power source such that excess energy stored by the circuitry coupled to the output of the power converter is consumed from the energy storage device when the input power of the power converter exceeds the maximum allowable input power.
    Type: Grant
    Filed: February 24, 2023
    Date of Patent: February 20, 2024
    Assignee: Cirrus Logic Inc.
    Inventors: Eric J. King, Ajit Sharma, Lingli Zhang, Christian Larsen, Graeme G. Mackay
  • Patent number: 11855471
    Abstract: A power management system for use in a device comprising a battery and one or more components configured to draw electrical energy from the battery may include a first power converter configured to electrically couple between charging circuity configured to provide electrical energy for charging the battery and the one or more downstream components and a bidirectional power converter configured to electrically couple between the charging circuitry and the battery, wherein the bidirectional power converter is configured to transfer charge from the battery or transfer charge from the battery based on a power requirement of the one or more components and a power available from the first power converter.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: December 26, 2023
    Assignee: Cirrus Logic Inc.
    Inventors: Ivan Perry, Hasnain Akram, Eric J. King
  • Publication number: 20230412976
    Abstract: 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: Application
    Filed: September 1, 2023
    Publication date: December 21, 2023
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Anthony S. DOY, Eric J. KING
  • Publication number: 20230381814
    Abstract: 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: Application
    Filed: May 25, 2023
    Publication date: November 30, 2023
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Axel THOMSEN, Eric J. KING, Anthony S. DOY, Thomas H. HOFF, John L. MELANSON
  • Publication number: 20230369882
    Abstract: A battery charging system may include a first current source for charging a battery that provides a direct current for charging the battery and a second current source for charging the battery that provides an alternating current for charging the battery and that provides electrical energy for operation of a system load of the battery during discharging of the battery. Further, a battery charging system may include a first current source for charging a battery that provides a direct current for charging the battery and a second current source for charging the battery that provides an alternating current at a frequency of at least 5 KHz for charging the battery.
    Type: Application
    Filed: April 27, 2023
    Publication date: November 16, 2023
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: John L. MELANSON, Eric J. KING
  • Publication number: 20230336013
    Abstract: A method of adapting a battery charging profile of a battery may include monitoring one or more parameters associated with the battery during normal operation of a device powered from the battery and while the battery is simultaneously charged by a charger and is discharged by a dynamic system load of the device, determining an impedance of the battery based on the one or more parameters, determining a condition of the battery based on the impedance and the one or more parameters, and adapting the battery charging profile based on the condition.
    Type: Application
    Filed: April 4, 2023
    Publication date: October 19, 2023
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Emmanuel A. MARCHAIS, Eric J. KING, John L. MELANSON
  • Publication number: 20230336068
    Abstract: A power converter system may include a first power converter configured to couple via its input to a power source and configured to convert an input voltage provided by the power source to an intermediate voltage, a second power converter coupled via its input to an output of the first power converter and configured to convert the intermediate voltage to a regulated output voltage, a capacitor coupled at one of its terminals to an electrical node of the intermediate voltage. Based on one or more electrical parameters of the power converter, the second power converter is controlled to regulate the regulated output voltage at a substantially constant level and the first power converter is controlled to control the intermediate voltage to maintain the intermediate voltage between a maximum voltage and a minimum voltage and regulate an input current drawn from the power source at a substantially constant level.
    Type: Application
    Filed: June 19, 2023
    Publication date: October 19, 2023
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Jeffrey A. MAY, Eric J. KING, Christian LARSEN, Eric EKLUND
  • Patent number: 11791816
    Abstract: 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: Grant
    Filed: February 2, 2022
    Date of Patent: October 17, 2023
    Assignee: Cirrus Logic Inc.
    Inventors: Axel Thomsen, Eric J. King, Anthony S. Doy, Thomas H. Hoff, John L. Melanson
  • Patent number: 11792569
    Abstract: 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: Grant
    Filed: January 26, 2023
    Date of Patent: October 17, 2023
    Assignee: Cirrus Logic Inc.
    Inventors: Anthony S. Doy, Eric J. King
  • Patent number: 11777516
    Abstract: A signal processing system may include a sensor readout channel configured to convert an electronic signal into a digital quantity. The sensor readout channel may include a first-order sigma-delta modulator having a modulator input and a modulator output, first outside chopping switches located at the modulator input, second outside chopping switches located at the modulator output, an auxiliary path having an analog-to-digital converter (ADC) having an auxiliary path input and an auxiliary path output, the auxiliary path input configured to receive as its input signal a signal output by a memory element of the first-order sigma-delta modulator, and a signal combiner configured to combine a modulator output signal generated by the first-order sigma-delta modulator with an auxiliary path output signal generated by the auxiliary path to generate a combined output signal.
    Type: Grant
    Filed: February 9, 2022
    Date of Patent: October 3, 2023
    Assignee: Cirrus Logic Inc.
    Inventors: John L. Melanson, Axel Thomsen, Mucahit Kozak, Paul Wilson, Eric J. King
  • Patent number: 11777495
    Abstract: This application relates to methods and apparatus for driving a transducer with switching drivers where the switching driver has an output bridge stage for switching an output node between switching voltages and a modulator for controlling the duty cycle of the output bridge stage based on an input signal. The switching driver also includes a voltage controller for providing the switching voltages which is operable to provide different switching voltages in different driver modes. A controller is provided to control the driver mode of operation and the duty cycle of the switching driver based on the input signal, and the controller is configured to transition from a present driver mode to a new driver mode by controlling the voltage controller to provide the switching voltages for the new mode and controlling the modulator to vary the duty cycle of the output bridge stage. The change in duty cycle is controlled such that there is no substantial discontinuity in switching ripple due to the mode transition.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: October 3, 2023
    Assignee: Cirrus Logic Inc.
    Inventors: John L. Melanson, Eric J. King, Thomas H. Hoff, Axel Thomsen
  • Patent number: 11770064
    Abstract: A system for controlling a current in a power converter configured to generate an output voltage may include a control loop having a plurality of comparators, each comparator having a respective reference voltage to which the output voltage is compared, a digital controller configured to calculate one or more pre-seeded control parameters for the current, and an analog state machine configured to, based on outputs of the plurality of comparators, select control parameters for controlling the current. The control parameters may be selected from the pre-seeded control parameters, control parameters for controlling the current to have a magnitude of zero, and control parameters for controlling the current to have a maximum magnitude.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: September 26, 2023
    Assignee: Cirrus Logic Inc.
    Inventors: Jason W. Lawrence, Eric J. King, Graeme G. MacKay
  • Patent number: 11764595
    Abstract: A system may include a power source, a power converter having an input coupled to the power source and an output for supplying electrical energy to a load, and a control circuit for controlling operation of the power converter. The control circuit may include a first feedback control subsystem configured to monitor an output voltage present at the output of the power converter and regulate the output voltage at or about a predetermined regulated voltage level in a normal mode of operation of the power converter and a second feedback control subsystem configured to monitor an input voltage present between the power source and the input of the power converter and responsive to the input voltage decreasing below a predetermined minimum voltage level, causing the power converter to operate in a protection mode of operation in order to maintain the input voltage at or about the predetermined minimum voltage level.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: September 19, 2023
    Assignee: Cirrus Logic Inc.
    Inventors: Graeme G. Mackay, Ajit Sharma, Jason W. Lawrence, Eric J. King