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公开(公告)号：US20200059241A1
公开(公告)日：2020-02-20
申请号：US16541869
申请日：2019-08-15
Applicant: INVENSENSE, INC.
Inventor： Michael Perrott
IPC: H03M3/00 , H04W52/02 , H04R17/02 , G06F1/324 , G06F1/3234
Abstract: An audio activity detector device is disclosed. The audio activity detector device comprises a closed loop feedback regulating circuit that supplies an input signal representative of a time-varying voltage signal to a quantizer circuit, wherein the quantizer circuit, as a function of the input signal, converts the input signal to a quantizer discrete-time signal; a first circuit that, as a function of the discrete-time signal, determines a key quantizer statistic value for the quantizer discrete-time signal; and a second circuit that, as a function of the key quantizer statistic value, determines a signal statistic value for the input signal and a gain control value.
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公开(公告)号：US20180017385A1
公开(公告)日：2018-01-18
申请号：US15265740
申请日：2016-09-14
Applicant: InvenSense, Inc.
Inventor： Alireza Shirvani , Michael Perrott
IPC: G01C19/56
CPC classification number: G01C19/56 , G01C19/5776
Abstract: A device includes a proof mass of a sensor, capacitive elements, an electrode circuitry, a time multiplexing circuitry, a sense circuitry, and a force feedback circuitry. The proof mass moves from a first position to a second position responsive to an external actuation. The capacitive elements change capacitive charge in response thereto. The electrode circuitry coupled to the capacitive elements generates a charge signal. The time multiplexing circuitry pass the charge signal during a sensing time period and prevents the charge signal from passing through during a forcing time period. The sense circuitry generates a sensed signal from the charge signal. The force feedback circuitry applies a charge associated with the sensed signal to the electrode circuitry during the forcing time period. The electrode circuitry applies the charge received from the force feedback circuitry to the capacitive elements, moving the proof mass from the second position to another position.
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公开(公告)号：US11374589B2
公开(公告)日：2022-06-28
申请号：US17081622
申请日：2020-10-27
Applicant: INVENSENSE, INC.
Inventor： Michael Perrott
Abstract: Exemplary multipath digital microphone described herein can comprise exemplary embodiments of adaptive ADC range multipath digital microphones, which allow low power to be achieved for amplifiers or gain stages, as well as for exemplary adaptive ADCs in exemplary multipath digital microphone arrangements described herein, while still providing a high DR digital microphone systems. Further non-limiting embodiments can comprise an exemplary glitch removal component configured to minimize audible artifacts associated with the change in the gain of the exemplary adaptive ADCs.
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公开(公告)号：US10948515B2
公开(公告)日：2021-03-16
申请号：US15374898
申请日：2016-12-09
Applicant: InvenSense, Inc.
Inventor： Sriraman Dakshinamurthy , Michael Perrott , Amaresh Malipatil , William Kerry Keal , Andy F. Milota
IPC: G01R35/00 , G01P21/00 , G01C19/5776 , G01P15/08
Abstract: A device may include a sensor, a sampling unit, and an interpolator. The sensor may be configured to sense motion and output a sensed signal. The sampling unit may be configured to sample the sensed signal with a sensor clocking signal to generate a plurality of sampled values. The interpolator may be coupled to the sampling unit and may be configured to receive the plurality of sampled values, the sensor clocking signal, and a reference clocking signal external to the device. The interpolator may be configured to interpolate the plurality of sampled values based on the reference clocking signal and further based on the sensor clocking signal to generate a plurality of output values.
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15.发明授权公开(公告)号：US10727798B2
公开(公告)日：2020-07-28
申请号：US16543276
申请日：2019-08-16
Applicant: INVENSENSE, INC.
Inventor： Igor Mucha , Michael Perrott
Abstract: Exemplary multipath digital microphones described herein can comprise exemplary embodiments of automatic gain control and multipath digital audio signal digital signal processing chains, which allow low power and die size to be achieved as described herein, while still providing a high DR digital microphone systems. Further non-limiting embodiments can facilitate switching between multipath digital audio signal digital signal processing chains while minimizing audible artifacts associated with either the change in the gain automatic gain control amplifiers switching between multipath digital audio signal digital signal processing chains.
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Patent Agency Ranking
公开(公告)号：US10578572B2
公开(公告)日：2020-03-03
申请号：US15000729
申请日：2016-01-19
Applicant: INVENSENSE, INC.
Inventor： Fang Liu , Jim Salvia , Zhineng Zhu , Michael Perrott
Abstract: A gas sensor device with temperature uniformity is presented herein. In an implementation, a device includes a complementary metal-oxide semiconductor (CMOS) substrate layer, a dielectric layer and a gas sensing layer. The dielectric layer is deposited on the CMOS substrate layer. Furthermore, the dielectric layer includes a temperature sensor and a heating element coupled to a heat transfer layer associated with a set of metal interconnections. The gas sensing layer is deposited on the dielectric layer.
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公开(公告)号：US20180164125A1
公开(公告)日：2018-06-14
申请号：US15374898
申请日：2016-12-09
Applicant: InvenSense, Inc.
Inventor： Sriraman Dakshinamurthy , Michael Perrott , Amaresh Malipatil , William Kerry Keal , Andy F. Milota
CPC classification number: G01P21/00 , G01C19/5776 , G01P15/08
Abstract: A device may include a sensor, a sampling unit, and an interpolator. The sensor may be configured to sense motion and output a sensed signal. The sampling unit may be configured to sample the sensed signal with a sensor clocking signal to generate a plurality of sampled values. The interpolator may be coupled to the sampling unit and may be configured to receive the plurality of sampled values, the sensor clocking signal, and a reference clocking signal external to the device. The interpolator may be configured to interpolate the plurality of sampled values based on the reference clocking signal and further based on the sensor clocking signal to generate a plurality of output values.
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公开(公告)号：US11955993B2
公开(公告)日：2024-04-09
申请号：US17114087
申请日：2020-12-07
Applicant: INVENSENSE, INC.
Inventor： Michael Perrott
IPC: H03M3/00 , G06F1/3234 , G06F1/324 , H04R17/02 , H04W52/02
Abstract: An audio activity detector device is disclosed. The audio activity detector device comprises a closed loop feedback regulating circuit that supplies an input signal representative of a time-varying voltage signal to a quantizer circuit, wherein the quantizer circuit, as a function of the input signal, converts the input signal to a quantizer discrete-time signal; a first circuit that, as a function of the discrete-time signal, determines a key quantizer statistic value for the quantizer discrete-time signal; and a second circuit that, as a function of the key quantizer statistic value, determines a signal statistic value for the input signal and a gain control value.
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公开(公告)号：US20210044302A1
公开(公告)日：2021-02-11
申请号：US17081622
申请日：2020-10-27
Applicant: INVENSENSE, INC.
Inventor： Michael Perrott
Abstract: Exemplary multipath digital microphone described herein can comprise exemplary embodiments of adaptive ADC range multipath digital microphones, which allow low power to be achieved for amplifiers or gain stages, as well as for exemplary adaptive ADCs in exemplary multipath digital microphone arrangements described herein, while still providing a high DR digital microphone systems. Further non-limiting embodiments can comprise an exemplary glitch removal component configured to minimize audible artifacts associated with the change in the gain of the exemplary adaptive ADCs.
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20.发明申请公开(公告)号：US20200059214A1
公开(公告)日：2020-02-20
申请号：US16543276
申请日：2019-08-16
Applicant: INVENSENSE, INC.
Inventor： Michael Perrott , Igor Mucha
Abstract: Exemplary multipath digital microphones described herein can comprise exemplary embodiments of automatic gain control and multipath digital audio signal digital signal processing chains, which allow low power and die size to be achieved as described herein, while still providing a high DR digital microphone systems. Further non-limiting embodiments can facilitate switching between multipath digital audio signal digital signal processing chains while minimizing audible artifacts associated with either the change in the gain automatic gain control amplifiers switching between multipath digital audio signal digital signal processing chains.
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