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41.发明授权公开(公告)号：US11537242B2
公开(公告)日：2022-12-27
申请号：US16294217
申请日：2019-03-06
Inventor： Tejasvi Das , Siddharth Maru , Zhong You , Luke Lapointe
Abstract: A system may include a resistive-inductive-capacitive sensor, 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. The system may also include a Q factor enhancer communicatively coupled to the resistive-inductive-capacitive sensor and configured to control a Q factor of the resistive-inductive-capacitive sensor.
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公开(公告)号：US11269509B2
公开(公告)日：2022-03-08
申请号：US17076489
申请日：2020-10-21
Inventor： Hamid Sepehr , Pablo Peso Parada , Willem Zwart , Tom Birchall , Michael Allen Kost , Tejasvi Das , Siddharth Maru , Matthew Beardsworth , Bruce E. Duewer
Abstract: A force sensing system for determining if a user input has occurred, the system comprising: an input channel, to receive an input from at least one force sensor; an activity detection stage, to monitor an activity level of the input from the at least one force sensor and, responsive to an activity level which may be indicative of a user input being reached, to generate an indication that an activity has occurred at the force sensor; and an event detection stage to receive said indication, and to determine if a user input has occurred based on the received input from the at least one force sensor.
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公开(公告)号：US11255892B2
公开(公告)日：2022-02-22
申请号：US16658755
申请日：2019-10-21
Inventor： Tejasvi Das , Siddharth Maru , Xin Zhao , Matthew Beardsworth , Michael A. Kost , John L. Melanson
IPC: G01R29/18
Abstract: A system may include a sensor having a variable phase response, a dummy impedance having a known phase response, and a measurement circuit communicatively coupled to the sensor and configured to measure first phase information associated with the sensor, measure second phase information associated with the dummy impedance, and determine a phase response of the measurement circuit based on a comparison of the first phase information to the second phase information.
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44.发明授权公开(公告)号：US10935620B2
公开(公告)日：2021-03-02
申请号：US16455437
申请日：2019-06-27
Inventor： Tejasvi Das , Siddharth Maru , Matthew Beardsworth , Bruce E. Duewer , Michael A. Kost
Abstract: A system may include a resistive-inductive-capacitive sensor, a driver configured to drive the resistive-inductive-capacitive sensor with a driving signal at a driving frequency, and a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to, during a calibration phase of the measurement circuit, measure phase and amplitude information associated with the resistive-inductive-capacitive sensor and based on the phase and amplitude information, determine at least one of a resonant frequency of the resistive-inductive-capacitive sensor and a transfer function of the resistive-inductive-capacitive sensor.
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Patent Agency Ranking
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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46.发明授权公开(公告)号：US10734885B2
公开(公告)日：2020-08-04
申请号：US16441449
申请日：2019-06-14
Inventor： Eric J. King , Siddharth Maru , Thomas Hoff , Graeme G. Mackay
Abstract: A method may include controlling switching behavior of switches of a switch-mode power supply based on a desired physical quantity associated with the switch-mode power supply, wherein the desired physical quantity is based at least in part on a slope compensation signal, generating the slope compensation signal to have a compensation value of approximately zero as seen by a compensation control loop of the switch-mode power supply, and modifying the slope compensation signal on successive switching cycles of the switch-mode power supply to account for differences in an output of the compensation control loop and an average current of an inductor of the switch-mode power supply in at least one phase of a switching period of a switching cycle of the switch-mode power supply.
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公开(公告)号：US10177657B2
公开(公告)日：2019-01-08
申请号：US15130453
申请日：2016-04-15
Inventor： Eric J. King , Siddharth Maru , John L. Melanson
Abstract: A switching power stage for producing an output voltage to a load may include a configurable switched mode power converter and a controller. The power converter may include a power inductor, a plurality of switches arranged to sequentially operate in a plurality of switch configurations, and an output for producing the output voltage, the output comprising a first output terminal and a second output terminal. The controller may be configured to, for at least one range of magnitudes of the output voltage, control the plurality of switches to operate in at least three switching phases per switching cycle of the power converter in order to generate the output voltage, wherein switching cycles of the power converter are substantially approximately equal in period and control the plurality of switches to apply for each of the at least three switching phases a respective switch configuration of the plurality of switch configurations.
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公开(公告)号：US09985587B2
公开(公告)日：2018-05-29
申请号：US15168680
申请日：2016-05-31
Inventor： Zhaohui He , Eric J. King , Siddharth Maru , John L. Melanson
CPC classification number: H03F1/32 , H03F1/0211 , H03F1/0227 , H03F1/0244 , H03F3/183 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F3/45076 , H03F2200/03 , H03F2203/45034 , H04R3/00 , H04R2420/03
Abstract: A switching power stage for producing a load voltage at a load output of the switching power stage, wherein the load output comprises a first load terminal having a first load voltage and a second load terminal having a second load voltage such that the load voltage comprises a difference between the first and the second load voltages, that may include: a power converter comprising a power inductor and a plurality of switches, wherein the power converter is configured to drive a power converter output terminal; a linear amplifier configured to drive a linear amplifier output terminal; and a controller for controlling the plurality of switches and the linear amplifier in order to generate the load voltage as a function of an input signal to the controller such that energy delivered to the load output is supplied predominantly by the power converter.
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公开(公告)号：US09929664B2
公开(公告)日：2018-03-27
申请号：US15282790
申请日：2016-09-30
Inventor： Eric J. King , Zhaohui He , Siddharth Maru , John L. Melanson
CPC classification number: H03F3/2171 , H02M5/293 , H02M2005/2932 , H03F1/0216 , H03F1/0227 , H03F1/32 , H03F3/185 , H03F3/2173 , H03F3/2178 , H03F2200/03 , H03F2200/153 , H03F2200/432 , H04R3/12
Abstract: A method may include controlling switches of a switching full-bridge of a signal processing system to commutate polarity of a capacitor with respect to the first processing path output and a second processing path output of the signal processing system in response to a condition for commutating connectivity of the switching full-bridge and inserting a feedforward compensation that bypasses a loop filter of the second processing path in order to prevent discontinuities caused by commutating polarity of the capacitor from being compensated by the loop filter.
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