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公开(公告)号：US20220029505A1
公开(公告)日：2022-01-27
申请号：US17497110
申请日：2021-10-08
Inventor： Aleksey KHENKIN , Siddharth MARU , Tejasvi DAS , Emmanuel MARCHAIS , Vadim KONRADI , Viral PARIKH , Jon D. HENDRIX , Marco A. JANKO
Abstract: A system for detecting displacement of a movable member of an electromagnetic transducer having a magnetic coil-driven linear actuator with a static member and a movable mass mechanically coupled to the static member and having a back electromotive force present across terminals of a coil of the electromagnetic transducer is provided. The system may include a resistive-inductive-capacitive sensor comprising the coil, a driver configured to drive the resistive-inductive-capacitive sensor with a driving signal, a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to measure one or more of phase information and amplitude information associated with the resistive-inductive-capacitive sensor and based on the one or more of phase information and amplitude information, determine a displacement of movable mass, wherein the displacement of the movable mass causes a change in an impedance of the resistive-inductive-capacitive sensor.
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32.发明申请公开(公告)号：US20200271745A1
公开(公告)日：2020-08-27
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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公开(公告)号：US20200271477A1
公开(公告)日：2020-08-27
申请号：US16455462
申请日：2019-06-27
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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34.发明申请公开(公告)号：US20200044628A1
公开(公告)日：2020-02-06
申请号：US16181792
申请日：2018-11-06
Inventor： Tejasvi DAS , Johann G. GABORIAU
Abstract: In accordance with embodiments of the present disclosure, an apparatus may include a signal path comprising a closed-loop analog pulse width modulator having a forward signal path and a feedback path, a variable resistor coupled to an output of the closed-loop analog pulse width modulator, and a control circuit configured to modify the variable resistor in order to modify an output impedance outside of the feedback path of the closed-loop analog pulse width modulator responsive to a condition for switching between a high output impedance mode and a low output impedance mode of the closed-loop analog pulse width modulator or vice versa.
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35.发明申请公开(公告)号：US20190302922A1
公开(公告)日：2019-10-03
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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Patent Agency Ranking
公开(公告)号：US20190302161A1
公开(公告)日：2019-10-03
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
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：US20190115909A1
公开(公告)日：2019-04-18
申请号：US16219187
申请日：2018-12-13
Inventor： Tejasvi DAS , Alan Mark MORTON , Xin ZHAO , Lei ZHU , Xiaofan FEI , Johann G. GABORIAU , John L. MELANSON , Amar VELLANKI
CPC classification number: H03K7/08 , G06F1/025 , H02M3/157 , H02M2001/0012 , H03F3/183 , H03F3/2175
Abstract: A system may include a digital pulse width modulator subsystem, a first path coupled to an output of the digital pulse width modulator subsystem and configured to drive an open-loop driver stage, a second path coupled to the output of the digital pulse width modulator subsystem and configured to drive a closed-loop analog pulse width modulator, a controller to select between the first path and the second path for processing a signal based on one or more characteristics of the signal, and a calibration subsystem configured to calibrate at least one of a first gain of the first path and a second gain of the second path in order that the first gain and the second gain are at least approximately equal at the time of switching selection between the first path and the second path or vice versa, in order to minimize artifacts due to the switching.
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公开(公告)号：US20180295442A1
公开(公告)日：2018-10-11
申请号：US15482250
申请日：2017-04-07
Inventor： Tejasvi DAS , Xin ZHAO , Ku HE , Xiaofan FEI
CPC classification number: H04R3/00 , H03F1/0277 , H03F3/185 , H03F3/211 , H03F3/217 , H03F3/2178 , H03F3/30 , H03F3/72 , H03F2200/03 , H03F2200/411 , H03F2200/432 , H04R29/00 , H04R2420/03
Abstract: In accordance with embodiments of the present disclosure, a system may include a playback path and a control circuit. The playback path may have a playback input for receiving an input signal and configured to generate at a playback path output an output signal based on the input signal, wherein the playback path is configured to operate in a plurality of operational modes. The control circuit may be configured to receive a first signal from within the playback path and indicative of the input signal, receive a second signal generated from the input signal externally to the playback path, and select a selected operational mode from the plurality of operational modes based on the first signal and the second signal.
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39.发明公开公开(公告)号：US20240248539A1
公开(公告)日：2024-07-25
申请号：US18609028
申请日：2024-03-19
Inventor： Tejasvi DAS , Matthew BEARDSWORTH , Michael A. KOST , Gavin MCVEIGH , Hamid SEPEHR , Carl L. STÅHL
CPC classification number: G06F3/016 , B06B1/0207 , B06B1/045 , G08B6/00 , B06B2201/53
Abstract: Embodiments described herein relate to methods and apparatuses for controlling an operation of a vibrational output system and/or an operation of an input sensor system, wherein the controller is for use in a device comprising the vibrational output system and the input sensor system. A controller comprises an input configured to receive an indication of activation or de-activation of an output of the vibrational output system; and an adjustment module configured to adjust the operation of the vibrational output system and/or the operation of the input sensor system based on the indication to reduce an interference expected to be caused by the output of the vibrational output system on the input sensory system.
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公开(公告)号：US20240231601A1
公开(公告)日：2024-07-11
申请号：US18601585
申请日：2024-03-11
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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