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公开(公告)号：US20210405840A1
公开(公告)日：2021-12-30
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
IPC: G06F3/0488 , G06F3/041
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：US20210140797A1
公开(公告)日：2021-05-13
申请号：US17157304
申请日：2021-01-25
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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公开(公告)号：US20230082721A1
公开(公告)日：2023-03-16
申请号：US17980429
申请日：2022-11-03
Inventor： Jason L. WARDLAW , Michael A. KOST , Anthony S. DOY , Tejasvi DAS , Siddharth MARU , Xin ZHAO , Matthew BEARDSWORTH , Bruce E. DUEWER
Abstract: 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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4.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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Patent Agency Ranking
公开(公告)号：US20230052112A1
公开(公告)日：2023-02-16
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
IPC: G06F3/0488 , G06F3/041
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：US20210034213A1
公开(公告)日：2021-02-04
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
IPC: G06F3/0488 , G06F3/041
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：US20180307293A1
公开(公告)日：2018-10-25
申请号：US15926643
申请日：2018-03-20
Inventor： Bradley Allan LAMBERT , Bruce E. DUEWER , David HISKY , Marc J. KOBAYASHI , Michael A. KOST
CPC classification number: G06F1/3215 , G06F1/10 , G06F1/12 , G06F13/385
Abstract: A device may include an input for receiving information communicated from a host to the device and a controller configured to recover a device reference clock on the device, the device reference clock proportional to a host reference clock of the host, when clock signaling from the host to the device is unavailable. The controller may recover the device reference clock by measuring a ratio between the host reference clock and the device reference clock of the device by monitoring, with the device, host start-of-frame markers communicated from the host to the device via the input, creating a recovered reference clock based on the measured ratio, and creating local start-of-frame markers that are phase locked with the host start-of-frame markers based on the recovered reference clock.A method for generating a not-yet (NYET) signal in a recovered reference system for recovering a device reference clock on a device, wherein the NYET signal indicates that the device is not yet ready for transition into a low power mode, in order to improve a quality of a recovered reference clock representative of a host reference clock of a host communicatively coupled to the device, may be provided. The method may include detecting receipt of start-of-frame markers from the host to the device, responsive to detecting receipt of the markers, determining whether a condition for NYET generation is being met, responsive to the condition for NYET generation being met, generating the NYET signal to cause the host to continue generating the markers, and responsive to the condition for NYET generation not being met, causing the device to generate an acknowledge signal for transition of the device into the low power mode.
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公开(公告)号：US20190163435A1
公开(公告)日：2019-05-30
申请号：US16200917
申请日：2018-11-27
Inventor： Bradley A. LAMBERT , Michael A. KOST , Bruce E. DUEWER
IPC: G06F3/16
Abstract: A system may include an audio coder-decoder (codec) having a plurality of digital-to-analog converters (DACs) and a plurality of analog-to-digital converters (ADCs), a serial interface communicatively coupled to the audio codec wherein the serial interface is configured to communicate audio streams to or from the audio codec, wherein the audio codec is configured to be configured as a device on the serial interface, and logic configured to control performance of a communication path within the audio codec based on one or more system conditions associated with the system.
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公开(公告)号：US20180317007A1
公开(公告)日：2018-11-01
申请号：US15926335
申请日：2018-03-20
Inventor： Pradeep DHANANJAY , Bruce E. DUEWER
CPC classification number: H04L25/4927 , H03F1/0227 , H03F1/025 , H03F3/187 , H03F3/213 , H03F2200/03 , H03F2200/331 , H04B14/046 , H04L25/03159 , H04R3/04
Abstract: An apparatus for generating an output signal, may comprise a signal path having an analog signal path portion having an analog magnitude droop, a digital signal path portion having a digital magnitude droop, a digital-to-analog converter for converting the digital input signal into the analog signal, a first digital compensation filter that compensates for the analog magnitude droop, and a second digital compensation filter that compensates for the digital magnitude droop, such that the first digital compensation filter and the second digital compensation filter together compensate for magnitude droop of the signal path to ensure a substantially flat passband response of the signal path.An apparatus may include a delta-sigma modulator for quantization noise shaping of a digital signal, a digital-to-analog converter configured to generate an analog signal from the digital signal, and an amplifier configured to amplify the analog signal and powered from a charge pump, wherein the charge pump is configured to operate at a switching frequency approximately equal to a zero of a modulator noise transfer function of the delta-sigma modulator, such that the impact of charge pump noise on a total harmonic distortion noise of the apparatus is minimized
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