Patents by Inventor Michael Perrott
Michael Perrott has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20210091785Abstract: 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.Type: ApplicationFiled: December 7, 2020Publication date: March 25, 2021Inventor: Michael Perrott
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Patent number: 10948515Abstract: 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.Type: GrantFiled: December 9, 2016Date of Patent: March 16, 2021Assignee: InvenSease, Inc.Inventors: Sriraman Dakshinamurthy, Michael Perrott, Amaresh Malipatil, William Kerry Keal, Andy F. Milota
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Publication number: 20210044302Abstract: 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.Type: ApplicationFiled: October 27, 2020Publication date: February 11, 2021Inventor: Michael Perrott
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Patent number: 10892772Abstract: 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.Type: GrantFiled: August 15, 2019Date of Patent: January 12, 2021Assignee: INVENSENSE, INC.Inventor: Michael Perrott
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Patent number: 10852135Abstract: 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.Type: GrantFiled: July 17, 2019Date of Patent: December 1, 2020Assignee: InvenSense, Inc.Inventors: Alireza Shirvani, Michael Perrott
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Patent number: 10855308Abstract: 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.Type: GrantFiled: November 4, 2019Date of Patent: December 1, 2020Assignee: INVENSENSE, INC.Inventor: Michael Perrott
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Publication number: 20200358416Abstract: 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.Type: ApplicationFiled: July 24, 2020Publication date: November 12, 2020Inventors: Igor Mucha, Michael Perrott
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Patent number: 10727798Abstract: 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.Type: GrantFiled: August 16, 2019Date of Patent: July 28, 2020Assignee: INVENSENSE, INC.Inventors: Igor Mucha, Michael Perrott
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Publication number: 20200162099Abstract: 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.Type: ApplicationFiled: November 4, 2019Publication date: May 21, 2020Inventor: Michael Perrott
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Patent number: 10578572Abstract: 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.Type: GrantFiled: January 19, 2016Date of Patent: March 3, 2020Assignee: INVENSENSE, INC.Inventors: Fang Liu, Jim Salvia, Zhineng Zhu, Michael Perrott
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Publication number: 20200059214Abstract: 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.Type: ApplicationFiled: August 16, 2019Publication date: February 20, 2020Inventors: Michael Perrott, Igor Mucha
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Publication number: 20200059241Abstract: 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.Type: ApplicationFiled: August 15, 2019Publication date: February 20, 2020Inventor: Michael Perrott
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Publication number: 20190339077Abstract: 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.Type: ApplicationFiled: July 17, 2019Publication date: November 7, 2019Inventors: Alireza SHIRVANI, Michael PERROTT
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Patent number: 10393522Abstract: 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.Type: GrantFiled: September 14, 2016Date of Patent: August 27, 2019Assignee: InvenSense, Inc.Inventors: Alireza Shirvani, Michael Perrott
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Publication number: 20180164125Abstract: 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.Type: ApplicationFiled: December 9, 2016Publication date: June 14, 2018Inventors: Sriraman Dakshinamurthy, Michael Perrott, Amaresh Malipatil, William Kerry Keal, Andy F. Milota
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Publication number: 20180017385Abstract: 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.Type: ApplicationFiled: September 14, 2016Publication date: January 18, 2018Inventors: Alireza Shirvani, Michael Perrott
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Publication number: 20170205368Abstract: 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.Type: ApplicationFiled: January 19, 2016Publication date: July 20, 2017Inventors: Fang Liu, Jim Salvia, Zhineng Zhu, Michael Perrott
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Patent number: 8138843Abstract: Described is a compact, lower power gated ring oscillator time-to-digital converter that achieves first order noise shaping of quantization noise using a digital implementation. The gated ring oscillator time-to-digital converter includes a plurality of delay stages configured to enable propagation of a transitioning signal through the delay stages during an enabled state and configured to inhibit propagation of the transitioning signal through the delay stages during a disabled state. Delay stages are interconnected to allow sustained transitions to propagate through the delay stages during the enabled state and to preserve a state of the gated ring oscillator time-to-digital converter during the disabled state. The state represents a time resolution that is finer than the delay of at least one of the delay stages. A measurement module determines the number of transitions of the delay stages.Type: GrantFiled: September 13, 2007Date of Patent: March 20, 2012Assignee: Massachusetts Institute of TechnologyInventors: Matthew Straayer, Michael Perrott
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Patent number: 7593644Abstract: A RF-synchronization system includes a laser that creates pulse trains for synchronization. A modulation means transfers the timing information of the pulse train into an amplitude modulation of an optical or electronic system. A synchronization module changes the driving frequency of the modulation means until it reaches a phase-locked state with the pulse train.Type: GrantFiled: May 10, 2005Date of Patent: September 22, 2009Assignee: Massachusetts Institute of TechnologyInventors: Franz X. Kaertner, Jung Won Kim, Michael Perrott
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Publication number: 20080069292Abstract: Described is a compact, lower power gated ring oscillator time-to-digital converter that achieves first order noise shaping of quantization noise using a digital implementation. The gated ring oscillator time-to-digital converter includes a plurality of delay stages configured to enable propagation of a transitioning signal through the delay stages during an enabled state and configured to inhibit propagation of the transitioning signal through the delay stages during a disabled state. Delay stages are interconnected to allow sustained transitions to propagate through the delay stages during the enabled state and to preserve a state of the gated ring oscillator time-to-digital converter during the disabled state. The state represents a time resolution that is finer than the delay of at least one of the delay stages. A measurement module determines the number of transitions of the delay stages.Type: ApplicationFiled: September 13, 2007Publication date: March 20, 2008Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Matthew Straayer, Michael Perrott