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公开(公告)号：US11507267B2
公开(公告)日：2022-11-22
申请号：US17471529
申请日：2021-09-10
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：US11474135B2
公开(公告)日：2022-10-18
申请号：US16600255
申请日：2019-10-11
Inventor： Siddharth Maru , Vadim Konradi , Matthew Beardsworth , Tejasvi Das
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 determine a measured change in a resonant frequency of the resistive-inductive-capacitive sensor and based on the measured change, modify the driving frequency.
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公开(公告)号：US11204670B2
公开(公告)日：2021-12-21
申请号：US17142484
申请日：2021-01-06
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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公开(公告)号：US10921159B1
公开(公告)日：2021-02-16
申请号：US16299565
申请日：2019-03-12
Inventor： Tejasvi Das , Zhong You , Siddharth Maru , Eric J. King , Johann G. Gaboriau , Luke Lapointe , Matthew Beardsworth
Abstract: A system may include a first resistive-inductive-capacitive sensor, a second resistive-inductive-capacitive sensor, and a measurement circuit communicatively coupled to the first resistive-inductive-capacitive sensor and the second resistive-inductive-capacitive sensor and configured to measure first phase information associated with the first resistive-inductive-capacitive sensor, measure second phase information associated with the second resistive-inductive-capacitive sensor, and based on the first phase information and the second phase information, determine a displacement of a mechanical member relative to the first resistive-inductive-capacitive sensor.
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公开(公告)号：US10860202B2
公开(公告)日：2020-12-08
申请号：US16422543
申请日：2019-05-24
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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Patent Agency Ranking
公开(公告)号：US20160308445A1
公开(公告)日：2016-10-20
申请号：US15130453
申请日：2016-04-15
Inventor： Eric J. King , Siddharth Maru , John L. Melanson
CPC classification number: H02M3/158 , H02M1/42 , H02M1/44 , H02M2003/1566 , H03F1/0227
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.
Abstract translation: 用于产生负载的输出电压的开关功率级可以包括可配置开关模式功率转换器和控制器。 功率转换器可以包括功率电感器，多个开关，被布置为依次操作多个开关配置，以及用于产生输出电压的输出，该输出包括第一输出端子和第二输出端子。 控制器可以被配置为，对于输出电压的大小的至少一个范围，控制多个开关以在功率转换器的每个开关周期的至少三个开关阶段中工作，以便产生输出电压，其中开关周期 功率转换器的周期基本上近似相等，并且控制多个开关以向至少三个开关阶段中的每一个应用多个开关配置的相应开关配置。
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17.发明授权公开(公告)号：US11644521B1
公开(公告)日：2023-05-09
申请号：US17690327
申请日：2022-03-09
Inventor： Ryan A. Hellman , Viral Parikh , Siddharth Maru , Tejasvi Das
CPC classification number: G01R35/005 , G01R1/203 , G01R19/0092 , G01R27/02 , G01R27/14 , G01R27/08 , G01R27/16
Abstract: Circuitry comprising: a voltage monitoring path; a current monitoring path; a reference element of a predefined impedance; and processing circuitry, wherein in operation of the circuitry in a calibration mode of operation: the voltage monitoring path is operative to output a signal indicative of a voltage across the reference element in response to a reference signal applied to the reference element; the current monitoring path is operative to output a signal indicative of a current through the reference element in response to the reference signal; and the processing circuitry is operative to: receive the signal indicative of the voltage across the reference element and the signal indicative of the current through the reference element; generate an estimate of an impedance of the reference element; and determine a compensation parameter for an element of the circuitry for compensating for a difference between the estimate of the impedance and the predefined impedance of the reference element.
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公开(公告)号：US11579030B2
公开(公告)日：2023-02-14
申请号：US17080455
申请日：2020-10-26
Inventor： Junsong Li , Rahul Gawde , Tejasvi Das , Siddharth Maru , Eric B. Smith
Abstract: A control method for a user interface system may include receiving an input signal, receiving a temperature signal indicative of a temperature, generating a baseline signal based on at least one among the input signal and the temperature signal, calculating an error signal based on a difference of the input signal and the baseline signal, and modifying the baseline signal based on the error signal.
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公开(公告)号：US11513019B2
公开(公告)日：2022-11-29
申请号：US17128676
申请日：2020-12-21
Inventor： Eric Lindemann , Pablo Peso Parada , Tanner Rosenthal , Siddharth Maru
Abstract: A baseline unit for use in a sensor system, the sensor system comprising N force sensors which output N sensor signals, respectively, where N≥1, the baseline unit configured to: monitor a measure of a rate of change of a sensor test signal, the sensor test signal being one of said N sensor signals or a signal derived from one or more of said N sensor signals; and in dependence upon the measure of the rate of change, control a stored baseline setting to control how a baseline test signal is calculated from said N sensor signals using a baseline-calculation method, the baseline-calculation method configured by the currently-stored baseline setting.
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公开(公告)号：US11366550B2
公开(公告)日：2022-06-21
申请号：US16457489
申请日：2019-06-28
Inventor： Bruce E. Duewer , Michael A. Kost , Matthew Beardsworth , Tejasvi Das , Siddharth Maru
Abstract: A system may include a plurality of actively-driven inductive sensors and a plurality of control circuits, each control circuit of the plurality of control circuits configured to control operation of a respective set of the actively-driven inductive sensors, each control circuit of the plurality of control circuits communicatively coupled to the other control circuits via a connection configured to distribute synchronization information among the plurality of control circuits. Each of the plurality of control circuits may further be configured to configure a schedule for controlling time-division multiplexed operation of its respective set of actively-driven inductive sensors and control time-division multiplexed operation of its respective set of actively-driven inductive sensors based on the schedule and the synchronization information in order to minimize interference among the plurality of actively-driven inductive sensors.
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