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公开(公告)号：US12085525B2
公开(公告)日：2024-09-10
申请号：US18470066
申请日：2023-09-19
Inventor： Tejasvi Das , Siddharth Maru , John L. Melanson
IPC: G01N27/02
CPC classification number: G01N27/025 , G01N27/028
Abstract: A system may include a resonant sensor configured to sense a physical quantity, a measurement circuit communicatively coupled to the resonant sensor and configured to measure one or more resonance parameters associated with the resonant sensor and indicative of the physical quantity using an incident/quadrature detector having an incident channel and a quadrature channel and perform a calibration of a non-ideality between the incident channel and the quadrature channel of the system, the calibration comprising determining the non-ideality by controlling the sensor signal, an oscillation signal for the incident channel, and an oscillation signal for the quadrature channel; and correcting for the non-ideality.
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公开(公告)号：US11972105B2
公开(公告)日：2024-04-30
申请号：US17962086
申请日：2022-10-07
Inventor： Hamid Sepehr , Pablo Peso Parada , Willem Zwart , Tom Birchall , Michael Allen Kost , Tejasvi Das , Siddharth Maru , Matthew Beardsworth , Bruce E. Duewer
CPC classification number: G06F3/0488 , G06F3/0412 , G06F3/0414 , G01L5/162 , G01L5/164 , G01L5/165 , G01L5/167 , G06F2203/04105 , H04M2250/22
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：US11093060B2
公开(公告)日：2021-08-17
申请号：US16679773
申请日：2019-11-11
Inventor： Gregory C. Yancey , Michael Kost , Tejasvi Das , Siddharth Maru , Matthew Beardsworth , Vadim Konradi
Abstract: A system may include a resistive-inductive-capacitive sensor, a driver configured to drive the resistive-inductive-capacitive sensor at a driving frequency, a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to measure phase information and amplitude associated with the resistive-inductive-capacitive sensor, and a noise detection circuit communicatively coupled to the measurement circuit and configured to determine a presence of external interference in the system based on at least one of the phase information and the amplitude information.
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公开(公告)号：US10942610B2
公开(公告)日：2021-03-09
申请号：US16831323
申请日：2020-03-26
Inventor： Siddharth Maru , Tejasvi Das , Luke Lapointe , Srdjan Marijanovic , Zhong You , Drew Kinney , Anthony S. Doy , Eric J. King
Abstract: A system may include a resistive-inductive-capacitive sensor, a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to at a plurality of periodic intervals, 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 driver configured to drive the resistive-inductive-capacitive sensor at a driving frequency and a driving amplitude, wherein at least one of the driving frequency and the driving amplitude varies among the plurality of periodic intervals.
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5.发明授权公开(公告)号：US10725549B2
公开(公告)日：2020-07-28
申请号：US16294347
申请日：2019-03-06
Inventor： Srdjan Marijanovic , Drew Kinney , Luke Lapointe , Siddharth Maru , Tejasvi Das , Anthony S. Doy , Zhong You
Abstract: A system may include a tactile actuator for providing tactile feedback and a resonant phase sensing system. The resonant phase sensing system may include a resistive-inductive-capacitive sensor and a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and the tactile actuator. The resistive-inductive-capacitive sensor may be configured to measure phase information associated with the resistive-inductive-capacitive sensor, based on the phase information, detect an indication of human interaction with the system proximate to the resistive-inductive-capacitive sensor, and trigger the tactile actuator to generate tactile feedback responsive to detecting the indication of human interaction.
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Patent Agency Ranking
公开(公告)号：US09906196B2
公开(公告)日：2018-02-27
申请号：US15270631
申请日：2016-09-20
Inventor： Zhaohui He , Eric J. King , Siddharth Maru , John L. Melanson
CPC classification number: H03F3/217 , H03F1/04 , H03F1/34 , H03F3/185 , H03F3/2171 , H03F3/2173 , H03F3/45475 , H03F2200/351 , H03F2200/432 , H03F2203/45034 , H04R3/12 , H04R2420/03
Abstract: A switching power stage for producing a load voltage may include a first processing path having a first output, a second processing path having a second output, a first plurality of switches comprising at least a first switch coupled between the first output and a first load terminal and a second switch coupled between the first output and the second load terminal, a second plurality of switches comprising at least a third switch coupled between the second output and the first load terminal and a fourth switch coupled between the second output and the second load terminal, and a controller configured to control switches in order to generate the load voltage as a function of an input signal such that one of the first switch and the second switch operates in a linear region of operation and one of the third switch and the fourth switch operates in a saturated region of operation for a predominance of a dynamic rage of the load voltage.
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公开(公告)号：US11948739B2
公开(公告)日：2024-04-02
申请号：US17568248
申请日：2022-01-04
Inventor： Emmanuel A. Marchais , Tejasvi Das , Siddharth Maru
IPC: H01F7/18
CPC classification number: H01F7/1844 , H01F2007/185
Abstract: A system may include an electromagnetic actuator, a first coil configured to drive mechanical displacement of the electromagnetic actuator, a second coil configured to drive mechanical displacement of the electromagnetic actuator, and an inductance sensing subsystem having an inductance sensing path coupled to the first coil and the second coil. The inductance sensing subsystem may be configured to select one of the first coil and the second coil for driving mechanical displacement of the electromagnetic actuator, select the other of the first coil and the second coil as a sensing coil for sensing displacement of the electromagnetic actuator, determine a displacement of the electromagnetic actuator based on a measurement of estimated inductance of the sensing coil, and when switching selection of the sensing coil from the first coil to the second coil determine the displacement of the first coil based on a measured inductance of the first coil at approximately the time of switching selection, estimate state variables of the inductance sensing path to be used with the second coil based on the displacement, and apply the state variables to the inductance sensing path after switching selection of the sensing coil from the first coil to the second coil.
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公开(公告)号：US11821761B2
公开(公告)日：2023-11-21
申请号：US17215157
申请日：2021-03-29
Inventor： Tejasvi Das , Siddharth Maru , John L. Melanson
IPC: G01D5/20
CPC classification number: G01D5/202
Abstract: A system may include a resistive-inductive-capacitive sensor configured to sense a physical quantity, and a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to measure one or more resonance parameters associated with the resistive-inductive-capacitive sensor and indicative of the physical quantity and, in order to maximize dynamic range in determining the physical quantity from the one or more resonance parameters, dynamically modify, across the dynamic range, either of reliance on the one or more resonance parameters in determining the physical quantity or one or more resonance properties of the resistive-inductive-capacitive sensor.
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公开(公告)号：US11595037B2
公开(公告)日：2023-02-28
申请号：US17848051
申请日：2022-06-23
Inventor： Matthew Beardsworth , Tejasvi Das , Siddharth Maru , Luke Lapointe
IPC: H03K17/97 , H03K17/14 , H03K17/975
Abstract: A system may include a sensor configured to output a sensor signal indicative of a distance between the sensor and a mechanical member associated with the sensor, a measurement circuit communicatively coupled to the sensor and configured to determine a physical force interaction with the mechanical member based on the sensor signal, and a compensator configured to monitor the sensor signal and to apply a compensation factor to the sensor signal to compensate for changes to properties of the sensor based on at least one of changes in a distance between the sensor and the mechanical member and changes in a temperature associated with the sensor.
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公开(公告)号：US11520436B2
公开(公告)日：2022-12-06
申请号：US17097384
申请日：2020-11-13
Inventor： Josh Sanz-Robinson , Siddharth Maru , Tejasvi Das
Abstract: A correction unit for use in a sensor system, the sensor system comprising a force sensor configured to output a sensor signal indicative of a temporary mechanical distortion of a material under an applied force, the correction unit configured, based on the sensor signal, to: estimate an effect of the applied force on how the material will return towards an undistorted form upon a substantial reduction or removal of the applied force; and generate a corrected signal based on the estimation.
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