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公开(公告)号：US20220294466A1
公开(公告)日：2022-09-15
申请号：US17804616
申请日：2022-05-31
申请人： INVENSENSE, INC.
发明人： Michael Perrott
摘要： 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：US10393522B2
公开(公告)日：2019-08-27
申请号：US15265740
申请日：2016-09-14
申请人： InvenSense, Inc.
发明人： Alireza Shirvani , Michael Perrott
IPC分类号： G01C19/56
摘要： 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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3.发明授权公开(公告)号：US11637537B2
公开(公告)日：2023-04-25
申请号：US16938734
申请日：2020-07-24
申请人： INVENSENSE, INC.
发明人： Igor Mucha , Michael Perrott
摘要： 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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公开(公告)号：US10852135B2
公开(公告)日：2020-12-01
申请号：US16514368
申请日：2019-07-17
申请人： InvenSense, Inc.
发明人： Alireza Shirvani , Michael Perrott
IPC分类号： G01C19/56
摘要： 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：US20200162099A1
公开(公告)日：2020-05-21
申请号：US16673484
申请日：2019-11-04
申请人： INVENSENSE, INC.
发明人： Michael Perrott
摘要： 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：US20210044302A1
公开(公告)日：2021-02-11
申请号：US17081622
申请日：2020-10-27
申请人： INVENSENSE, INC.
发明人： Michael Perrott
摘要： 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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7.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
申请人： INVENSENSE, INC.
发明人： Michael Perrott , Igor Mucha
摘要： 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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公开(公告)号：US20170205368A1
公开(公告)日：2017-07-20
申请号：US15000729
申请日：2016-01-19
申请人： INVENSENSE, INC.
发明人： Fang Liu , Jim Salvia , Zhineng Zhu , Michael Perrott
摘要： 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：US20210091785A1
公开(公告)日：2021-03-25
申请号：US17114087
申请日：2020-12-07
申请人： INVENSENSE, INC.
发明人： Michael Perrott
IPC分类号： H03M3/00 , G06F1/3234 , H04R17/02 , G06F1/324 , H04W52/02
摘要： 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：US10892772B2
公开(公告)日：2021-01-12
申请号：US16541869
申请日：2019-08-15
申请人： INVENSENSE, INC.
发明人： Michael Perrott
IPC分类号： H03M3/00 , G06F1/3234 , H04R17/02 , G06F1/324 , H04W52/02
摘要： 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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