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公开(公告)号：US10908200B2
公开(公告)日：2021-02-02
申请号：US16267079
申请日：2019-02-04
Inventor： Zhong You , Siddharth Maru , Tejasvi Das , Luke Lapointe , Eric J. King , Anthony S. Doy , Srdjan Marjianovic , Drew Kinney , Matthew Beardsworth , Emmanuel Marchais
IPC: G01R27/26 , G01R27/02 , G01D5/20 , G01D5/243 , G01R27/28 , G01R31/26 , G01R31/64 , G01R17/16 , G01R21/07
Abstract: A system may include a resistive-inductive-capacitive sensor, a driver configured to drive the resistive-inductive-capacitive sensor at a driving frequency, and a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to measure phase information associated with the resistive-inductive-capacitive sensor and based on the phase information, determine a displacement of a mechanical member relative to the resistive-inductive-capacitive sensor, wherein the displacement of the mechanical member causes a change in an impedance of the resistive-inductive-capacitive sensor.
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公开(公告)号：US10832537B2
公开(公告)日：2020-11-10
申请号：US16289080
申请日：2019-02-28
Inventor： Anthony S. Doy , Nermin Osmanovic , Carl L. Ståhl
Abstract: 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.
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公开(公告)号：US12257601B2
公开(公告)日：2025-03-25
申请号：US18615241
申请日：2024-03-25
Inventor： Axel Thomsen , Eric J. King , Anthony S. Doy , Thomas H Hoff , John L. Melanson
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.
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公开(公告)号：US12167696B2
公开(公告)日：2024-12-10
申请号：US18410837
申请日：2024-01-11
Inventor： John P. Lesso , Anthony S. Doy
Abstract: 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.
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公开(公告)号：US11980913B2
公开(公告)日：2024-05-14
申请号：US18323779
申请日：2023-05-25
Inventor： Axel Thomsen , Eric J. King , Anthony S. Doy , Thomas H. Hoff , John L. Melanson
CPC classification number: B06B1/0223 , B06B1/0215 , B06B1/0688 , G06F3/016 , H10N30/802
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.
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Patent Agency Ranking
公开(公告)号：US11914781B2
公开(公告)日：2024-02-27
申请号：US17958843
申请日：2022-10-03
Inventor： Anthony S. Doy
IPC: G06F3/01 , G06F3/044 , G06F3/041 , G06F3/02 , G06F3/0354
CPC classification number: G06F3/016 , G06F3/0202 , G06F3/03547 , G06F3/0416 , G06F3/0445 , G06F3/0446 , G06F2203/04105 , G06F2203/04106
Abstract: 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.
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公开(公告)号：US11847906B2
公开(公告)日：2023-12-19
申请号：US17728668
申请日：2022-04-25
Inventor： Jeffrey D. Alderson , John L. Melanson , Anthony S. Doy , Eric Lindemann
Abstract: 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.
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公开(公告)号：US11836290B2
公开(公告)日：2023-12-05
申请号：US17157304
申请日：2021-01-25
Inventor： Michael A. Kost , Bruce E. Duewer , Tejasvi Das , Matthew Beardsworth , Anthony S. Doy
Abstract: 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.
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公开(公告)号：US11791816B2
公开(公告)日：2023-10-17
申请号：US17590943
申请日：2022-02-02
Inventor： Axel Thomsen , Eric J. King , Anthony S. Doy , Thomas H. Hoff , John L. Melanson
IPC: H03K17/687 , H02N2/00 , H02M3/158
CPC classification number: H03K17/6871 , H02M3/158 , H02N2/0075
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.
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公开(公告)号：US11684950B2
公开(公告)日：2023-06-27
申请号：US17314890
申请日：2021-05-07
Inventor： Axel Thomsen , Eric J. King , Anthony S. Doy , Thomas H. Hoff , John L. Melanson
CPC classification number: B06B1/0223 , B06B1/0215 , B06B1/0688 , G06F3/016 , H10N30/802
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.
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