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公开(公告)号：US12114137B2
公开(公告)日：2024-10-08
申请号：US18524887
申请日：2023-11-30
发明人： John P. Lesso
摘要： An apparatus, comprising: an audio input for receiving an input audio signal; an tuning input for receiving a tuning signal; a filter chain comprising a plurality of filters for filtering the audio signal to produce a filtered input audio signal, the filter chain comprising: a first filter module operating at a first sampling rate; and a second filter module operating at a second sampling rate greater than the first sampling rate, wherein a phase response of the first filter module is dependent on the tuning input and wherein a magnitude response of the first filter module is substantially independent of the tuning input.
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公开(公告)号：US12107494B2
公开(公告)日：2024-10-01
申请号：US17704142
申请日：2022-03-25
发明人： John P. Lesso
CPC分类号： H02M3/07 , H02M1/0067 , H02M1/0083 , H02M1/0095
摘要： A DC-DC converter for converting an input voltage at an input node, the converter comprising: first and second inductor nodes for connection of an inductor therebetween; first and second flying capacitor nodes for connection of a flying capacitor therebetween; a first switching network for selectively connecting the first flying capacitor node to each of the input node and the first inductor node; a second switching network for selectively connecting the second flying capacitor node to each of the input node and a reference voltage node; and reservoir circuitry, comprising: first and second reservoir capacitor nodes for connection of a reservoir capacitor therebetween; a third switching network for selectively connecting the first reservoir capacitor node to each of the first and second flying capacitor nodes; a fourth switching network for selectively connecting the second reservoir capacitor node to each of the second flying capacitor node and the reference voltage node.
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公开(公告)号：US12101097B2
公开(公告)日：2024-09-24
申请号：US17987448
申请日：2022-11-15
发明人： Paul Wilson , James T. Deas , Mucahit Kozak , Graeme G. Mackay
CPC分类号： H03M1/1023 , H03M1/0609
摘要： Coulomb counter circuitry operable in a first mode of operation and a second mode of operation, the coulomb counter circuitry comprising: first analog to digital converter (ADC) circuitry configured to generate a first ADC output signal indicative of a current through a load coupled to the coulomb counter circuitry; second analog to digital converter (ADC) circuitry; offset correction circuitry; and accumulator circuitry configured to generate a signal indicative of a cumulative amount of charge transferred to the load, wherein in the second mode of operation, the coulomb counter circuitry is operable to enable the second ADC circuitry and to generate an offset correction factor based at least in part on a second ADC output signal output by the second ADC circuitry, and wherein in subsequent operation of the coulomb counter circuitry in the first mode of operation, the offset correction circuitry applies the offset correction factor to the first ADC output signal.
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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
发明人： Tejasvi Das , Siddharth Maru , John L. Melanson
IPC分类号： G01N27/02
CPC分类号： G01N27/025 , G01N27/028
摘要： 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：US12034442B2
公开(公告)日：2024-07-09
申请号：US17948442
申请日：2022-09-20
发明人： Donelson A. Shannon , Jianping Wen
IPC分类号： G11C5/14 , G11C17/00 , H03K19/0185
CPC分类号： H03K19/018507 , G11C5/14 , G11C17/00
摘要： A system may include a first power domain defined by a first supply rail and a first ground rail, a second power domain defined by a second supply rail and a second ground rail, and a configurable switch coupled between the first ground rail and the second ground rail such that when the configurable switch is enabled, the first ground rail and the second ground rail are electrically shorted to one another and when the configurable switch is disabled, the first ground rail and the second ground rail are electrically isolated from one another.
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公开(公告)号：US12032744B2
公开(公告)日：2024-07-09
申请号：US18094680
申请日：2023-01-09
发明人： Harsha Rao , Rong Hu , Carl Lennart Ståhl , Jie Su , Vadim Konradi , Teemu Ramo , Anthony Stephen Doy
CPC分类号： G06F3/016 , G06F3/01 , G06F3/0414 , G06F3/0416 , G06F3/044
摘要： An integrated haptic system may include a digital signal processor and an amplifier communicatively coupled to the digital signal processor and integrated with the digital signal processor into the integrated haptic system. The digital signal processor may be configured to receive a force sensor signal indicative of a force applied to a force sensor and generate a haptic playback signal responsive to the force. The amplifier may be configured to amplify the haptic playback signal and drive a vibrational actuator communicatively coupled to the amplifier with the haptic playback signal as amplified by the amplifier.
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公开(公告)号：US12009829B2
公开(公告)日：2024-06-11
申请号：US17980146
申请日：2022-11-03
CPC分类号： H03M1/06 , H03M1/0607 , H03M1/0626 , H03M1/1023
摘要： A digital-to-analog converter may include an integrator, an input network comprising a plurality of parallel taps, each member of the plurality of parallel taps having a signal delay such that at least two of the signal delays of the members of the plurality of parallel taps are different, and wherein each member of the plurality of parallel taps is coupled between an input of the digital-to-analog converter and an input of the integrator, and control circuitry configured to selectively enable and disable particular members of the plurality of parallel taps in order to program an effective input resistance of the input network to control an analog gain of the digital-to-analog converter, such that the control circuitry enables an even number of members at a time, with half of such enabled members in a first group and half of such enabled members in a second group.
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公开(公告)号：US11998948B2
公开(公告)日：2024-06-04
申请号：US16921369
申请日：2020-07-06
发明人： John Paul Lesso , Toru Ido
IPC分类号： B06B1/02
CPC分类号： B06B1/0261 , B06B2201/55
摘要： The present disclosure relates to driver circuitry for driving a piezoelectric transducer. The circuitry comprises: a power supply; a reservoir capacitance; switch network circuitry; and control circuitry. The control circuitry is configured to control operation of the switch network circuitry so as to charge the reservoir capacitance from the power supply and to transfer charge between the reservoir capacitance and the piezoelectric transducer.
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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：US11962180B2
公开(公告)日：2024-04-16
申请号：US17220641
申请日：2021-04-01
发明人： Emmanuel Marchais , Ross C. Morgan , Ivan Perry , Eric J. King
CPC分类号： H02J7/007 , H02M1/008 , H02J2207/20 , H02M3/04
摘要： A power delivery system may include an inductive power converter comprising a shared connection to a shared voltage from a battery, multiple inductive phases, each of the multiple inductive phases configured to generate a respective voltage from the shared voltage, multiple regulated voltage connections, and one or more switches configured and arranged to selectively assign at least one of the multiple inductive phases to a regulated voltage connection selected from the multiple regulated voltage connections.
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