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公开(公告)号：US10833698B1
公开(公告)日：2020-11-10
申请号：US16704853
申请日：2019-12-05
Applicant: INVENSENSE, INC.
Inventor： Omid Oliaei , Peter George Hartwell
IPC: H03M3/00
Abstract: A modulator system for converting a current-varying sensor output to a digital representation is disclosed. The modulator system includes a resonator with a first resonator input and a second resonator input. The first resonator input carries a constant reference current and the second resonator input carries a varying input current. In response to a digital output, the resonator generates a complementary voltage output based on a difference between the constant reference current and the varying input current during a conversion time. The resonator resonates near or at zero frequency. An accumulated digital output is based on the accumulation of the digital output generated at each sampling clock cycle of the conversion time and represents a digital word proportional to the varying input current.
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公开(公告)号：US09936289B2
公开(公告)日：2018-04-03
申请号：US14553296
申请日：2014-11-25
Applicant: INVENSENSE, INC.
Inventor： Omid Oliaei
CPC classification number: H04R1/406 , H03F3/183 , H03F2200/03 , H04R3/005 , H04R29/005 , H04R2201/003 , H04R2499/11 , H04R2499/15
Abstract: Microelectromechanical systems (MEMS) acoustic sensors are implemented with dedicated preamplifiers. Provided implementations can comprise an array of MEMS acoustic sensor elements each having a dedicated preamplifier. A summation node can add outputs of each preamplifier and an analog to digital converter (ADC) can receive the summed outputs. Other implementations can comprise an array of MEMS acoustic sensors each having dedicated preamplifiers. Some of the preamplifiers receive an invert signal and an ADC can subtract inverted signals from non-inverted signals.
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公开(公告)号：US20160192084A1
公开(公告)日：2016-06-30
申请号：US14737900
申请日：2015-06-12
Applicant: INVENSENSE, INC.
Inventor： Omid Oliaei
CPC classification number: H04R19/005 , H04R3/06 , H04R2201/003 , H04R2430/03
Abstract: Detection of audible and ultrasonic signals is provided by a microelectromechanical microphone. The detection range of ultrasonic signals can be configurable. In certain embodiments, the microelectromechanical microphone can include a band-pass sigma-delta modulator that can generate a digital signal representative of an ultrasonic signal. In addition or in other embodiments, the microelectromechanical microphone can include an event detector device that can determine that an ultrasonic event has occurred and, in response, can send a control signal to an external device. Detection of ultrasonic signals can be utilized in vehicular applications and/or gesture recognition.
Abstract translation: 可听和超声波信号的检测由微机电麦克风提供。 超声信号的检测范围可以配置。 在某些实施例中，微机电麦克风可以包括能够生成代表超声信号的数字信号的带通Σ-Δ调制器。 另外或在其他实施例中，微机电麦克风可以包括可以确定超声波事件已经发生的事件检测器装置，并且作为响应，可以向外部装置发送控制信号。 可以在车辆应用和/或手势识别中使用超声信号的检测。
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公开(公告)号：US20150350772A1
公开(公告)日：2015-12-03
申请号：US14628686
申请日：2015-02-23
Applicant: INVENSENSE, INC.
Inventor： Omid Oliaei , Fariborz Assaderaghi
IPC: H04R3/00
CPC classification number: H04R3/00 , H01L24/16 , H01L24/48 , H01L24/73 , H01L25/0652 , H01L25/0655 , H01L2224/16145 , H01L2224/48091 , H01L2224/48227 , H01L2224/48465 , H01L2224/73207 , H01L2924/00014 , H01L2924/14 , H01L2924/1433 , H01L2924/14335 , H01L2924/1461 , H01L2924/15151 , H01L2924/15313 , H01L2924/16152 , H01L2924/16251 , H04R1/04 , H04R2201/003 , H01L2924/00 , H01L2224/45099 , H01L2224/45015 , H01L2924/207
Abstract: Smart sensors comprising one or more microelectromechanical systems (MEMS) sensors and a digital signal processor (DSP) in a sensor package are described. An exemplary smart sensor can comprise a MEMS acoustic sensor or microphone and a DSP housed in a package or enclosure comprising a substrate and a lid and a package substrate that defines a back cavity for the MEMS acoustic sensor or microphone. Provided implementations can also comprise a MEMS motion sensor housed in the package or enclosure. Embodiments of the subject disclosure can provide improved power management and battery life from a single charge by intelligently responding to trigger events or wake events while also providing an always on sensor that persistently detects the trigger events or wake events. In addition, various physical configurations of smart sensors and MEMS sensor or microphone packages are described.
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公开(公告)号：US10281485B2
公开(公告)日：2019-05-07
申请号：US15224131
申请日：2016-07-29
Applicant: INVENSENSE, INC.
Inventor： Omid Oliaei , Mehran Ayat
Abstract: Multi-path signal processing for microelectromechanical systems (MEMS) sensors is described. An exemplary MEMS sensor apparatus can comprise a single MEMS sensor element and an associated integrated circuit (IC) that facilitates generating multiple output signals having different output signal electrical characteristics required by a host system. Provided implementations can minimize cost and IC die area of associated MEMS sensor apparatuses and systems by employing one or more signal multiplexers (MUXs) on a single common signal path from the single MEMS sensor element. In addition, various methods of generating multiple output signals having different output signal electrical characteristics from a single MEMS sensor element are described.
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Patent Agency Ranking
公开(公告)号：US20190116428A1
公开(公告)日：2019-04-18
申请号：US16215047
申请日：2018-12-10
Applicant: INVENSENSE, INC.
Inventor： Omid Oliaei
Abstract: Detection of audible and ultrasonic signals is provided by a microelectromechanical microphone. The detection range of ultrasonic signals can be configurable. In certain embodiments, the microelectromechanical microphone can include a band-pass sigma-delta modulator that can generate a digital signal representative of an ultrasonic signal. In addition or in other embodiments, the microelectromechanical microphone can include an event detector device that can determine that an ultrasonic event has occurred and, in response, can send a control signal to an external device. Detection of ultrasonic signals can be utilized in vehicular applications and/or gesture recognition.
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公开(公告)号：US20180217008A1
公开(公告)日：2018-08-02
申请号：US15939247
申请日：2018-03-28
Applicant: INVENSENSE, INC.
Inventor： Xiang Li , Omid Oliaei , Julius Ming-Lin Tsai , Baris Cagdaser , Martin Lim
IPC: G01K11/24 , G01K13/02 , G01N29/024 , H04B11/00
CPC classification number: G01K11/24 , G01K13/02 , G01K2013/024 , G01N29/024 , G01N2291/011 , G01N2291/014 , G01N2291/02845 , G01N2291/02881 , H04B11/00
Abstract: Acoustic ambient temperature and humidity sensing based on determination of sound velocity is described, in addition to sensors, algorithms, devices, systems, and methods therefor. An exemplary embodiment employs sound velocity in the determination of ambient temperature and humidity. Provided implementations include determinations of sound velocity based on time of flight of a coded acoustic signal and/or based on resonance frequency of a Helmholtz resonator.
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公开(公告)号：US09933319B2
公开(公告)日：2018-04-03
申请号：US14684711
申请日：2015-04-13
Applicant: INVENSENSE, INC.
Inventor： Xiang Li , Omid Oliaei , Julius Ming-Lin Tsai , Baris Cagdaser , Martin Lim
IPC: G01K11/24 , H04B11/00 , G01K13/02 , G01N29/024
CPC classification number: G01K11/24 , G01K13/02 , G01K2013/024 , G01N29/024 , G01N2291/011 , G01N2291/014 , G01N2291/02845 , G01N2291/02881 , H04B11/00
Abstract: Acoustic ambient temperature and humidity sensing based on determination of sound velocity is described, in addition to sensors, algorithms, devices, systems, and methods therefor. An exemplary embodiment employs sound velocity in the determination of ambient temperature and humidity. Provided implementations include determinations of sound velocity based on time of flight of a coded acoustic signal and/or based on resonance frequency of a Helmholtz resonator.
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9.发明申请MICROELECTROMECHANICAL SYSTEMS (MEMS) AUDIO SENSOR-BASED PROXIMITY SENSOR 审中-公开微电子系统（MEMS）基于音频传感器的接近传感器公开(公告)号：US20160090293A1
公开(公告)日：2016-03-31
申请号：US14497164
申请日：2014-09-25
Applicant: INVENSENSE, INC.
Inventor： Omid Oliaei
CPC classification number: B81B7/00 , B81B2201/0257 , G01B17/00 , G01S7/523 , G01S15/04 , H04R1/08 , H04R2201/003
Abstract: Microelectromechanical systems (MEMS) acoustic sensors associated with proximity detection are described. Provided implementations can comprise a MEMS acoustic sensor element associated with a transmitter and a receiver. The transmitter transmits acoustic signals for reflection off a surface. The receiver receives the reflected acoustic signals and determines a proximity of the surface. Functions of a device are controlled according to the determined proximity.
Abstract translation: 描述了与接近检测相关联的微机电系统（MEMS）声传感器。 所提供的实施方案可以包括与发射机和接收机相关联的MEMS声学传感器元件。 发射机发射声表面反射的声信号。 接收器接收反射的声信号并确定表面的接近度。 根据确定的接近度来控制设备的功能。
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公开(公告)号：US12199629B2
公开(公告)日：2025-01-14
申请号：US18107219
申请日：2023-02-08
Applicant: InvenSense, Inc.
Inventor： Omid Oliaei , Aurelio Pellegrini , Daniele Ottini
Abstract: A circuit for a feedback system incorporates a gating mechanism to reduce flicker noise (e.g., a source for bias instability within a MEMS device) at a digital output. The gating mechanism generates a gating pulse with a delay period (e.g., a common, or fixed, delay including symmetrical rising and falling edge delays) that overrides internal delays (e.g., asymmetrical rising and falling edge delays) of a phase generator to prevent propagation delay (e.g., delay affected by jitter) from reaching subsequent feedback components (e.g., a digital-to-analog converter (DAC)) and contributing to the generation of flicker noise within the system.
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