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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
发明人： Hamid Sepehr , Pablo Peso Parada , Willem Zwart , Tom Birchall , Michael Allen Kost , Tejasvi Das , Siddharth Maru , Matthew Beardsworth , Bruce E. Duewer
CPC分类号： G06F3/0488 , G06F3/0412 , G06F3/0414 , G01L5/162 , G01L5/164 , G01L5/165 , G01L5/167 , G06F2203/04105 , H04M2250/22
摘要： 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
发明人： Gregory C. Yancey , Michael Kost , Tejasvi Das , Siddharth Maru , Matthew Beardsworth , Vadim Konradi
摘要： 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：US11536758B2
公开(公告)日：2022-12-27
申请号：US16517046
申请日：2019-07-19
发明人： Jason L. Wardlaw , Michael A. Kost , Anthony S. Doy , Tejasvi Das , Siddharth Maru , Xin Zhao , Matthew Beardsworth , Bruce E. Duewer
摘要： A system may include an array of sensor elements, the array of sensor elements each comprising a first type of passive reactive element, a second type of passive reactive element electrically coupled to the array of sensor elements, a driver configured to drive the array of sensor elements and the second type of passive reactive element, and control circuitry configured to control enabling and disabling of individual sensor elements of the array of sensor elements to ensure no more than one of the array of sensor elements is enabled at a time such that when one of the array of sensor elements is enabled, the one of the array of sensor elements and the second type of passive reactive element together operate as a resonant sensor.
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公开(公告)号：US11418184B2
公开(公告)日：2022-08-16
申请号：US17494479
申请日：2021-10-05
IPC分类号： H03K17/14 , H03K17/975 , H03K17/97
摘要： 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：US11913846B2
公开(公告)日：2024-02-27
申请号：US17208317
申请日：2021-03-22
发明人： Matthew Beardsworth , Vadim Konradi , Bill Diehl
CPC分类号： G01L1/2281 , G01L1/225 , G01L1/2287
摘要： Compensation circuitry for compensating for a thermal effect in an output signal output by a force sensor may comprise monitoring circuitry configured to monitor one or more electrical parameters of the resistive force sensor and processing circuitry. The processing circuitry is configured to determine an absolute resistance value for the force sensor based on the one or more monitored electrical parameters and to adjust one or more operational parameters of the force sensor system based at least in part on the determined absolute resistance value.
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公开(公告)号：US11669165B2
公开(公告)日：2023-06-06
申请号：US17190708
申请日：2021-03-03
发明人： Tejasvi Das , Matthew Beardsworth , Michael A. Kost , Gavin McVeigh , Hamid Sepehr , Carl L. Ståhl
CPC分类号： G06F3/016 , B06B1/0207 , B06B1/045 , G08B6/00 , B06B2201/53
摘要： 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：US11366550B2
公开(公告)日：2022-06-21
申请号：US16457489
申请日：2019-06-28
摘要： 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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公开(公告)号：US11171641B2
公开(公告)日：2021-11-09
申请号：US16654791
申请日：2019-10-16
IPC分类号： H03K17/14 , H03K17/975 , H03K17/97
摘要： 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：US10976825B2
公开(公告)日：2021-04-13
申请号：US16660444
申请日：2019-10-22
发明人： Tejasvi Das , Matthew Beardsworth , Michael Allan Kost , Gavin McVeigh , Hamid Sepehr , Carl L. Ståhl
摘要： 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：US12130159B2
公开(公告)日：2024-10-29
申请号：US16532850
申请日：2019-08-06
发明人： Siddharth Maru , Tejasvi Das , Zhong You , Johann G. Gaboriau , Matthew Beardsworth , Gregory C. Yancey
CPC分类号： G01D5/243 , G01D5/14 , G01D5/16 , G01D5/20 , G01D5/24 , G06F3/01 , H03K17/9522 , H03K17/9537
摘要： A system may include a resistive-inductive-capacitive sensor, a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor, and a filter communicatively coupled to the measurement circuit. The measurement circuit may be 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 filter may be configured to isolate changes to the displacement which are significantly slower than an expected change to the displacement in response to a human interaction with the mechanical member.
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