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公开(公告)号：US20180017616A1
公开(公告)日：2018-01-18
申请号：US15717002
申请日：2017-09-27
Applicant: Allegro MicroSystems, LLC
Inventor： Craig S. Petrie , Bryan Cadugan
CPC classification number: G01R31/2884 , G01D5/145 , G01D5/2448 , G01D5/2449 , G01R33/0035 , G01R33/07 , G01R33/09
Abstract: Methods and apparatus for processing a signal comprise at least one circuit configured to generate a measured signal during a measured time period and a reference signal during a reference time period. Also included is at least one dual- or multi-path analog-to-digital converter comprising at least a first processing circuit configured to process the measured signal, at least a second processing circuit configured to process the reference signal, and a third processing circuit configured to process both the measured signal and the reference signal.
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公开(公告)号：US09841485B2
公开(公告)日：2017-12-12
申请号：US14541735
申请日：2014-11-14
Applicant: Allegro Microsystems, LLC
Inventor： Craig S. Petrie , Bryan Cadugan
CPC classification number: G01R35/005 , G01D5/145 , G01D5/2448 , G01D5/2449 , G01R31/2884 , G01R33/0035 , G01R33/072
Abstract: A magnetic field sensor includes at least one magnetic field sensing element configured to generate a measured magnetic field signal responsive to an external magnetic field and to generate a reference magnetic field signal responsive to a reference magnetic field and a calibration circuit configured to divide the measured magnetic field signal by the reference magnetic field signal to generate a calibrated magnetic field signal. The calibrated signal has reduced susceptibility to stress influences.
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公开(公告)号：US09812637B2
公开(公告)日：2017-11-07
申请号：US15165322
申请日：2016-05-26
Applicant: Allegro Microsystems, LLC
Inventor： Claude Fermon , Paolo Campiglio , Bryan Cadugan
IPC: G11B5/39 , G01R33/09 , H01F10/32 , H01L43/08 , H01L43/12 , G11C11/00 , G01R33/00 , H01L43/02 , H01L43/10 , B82Y10/00
CPC classification number: H01L43/08 , B82Y10/00 , G01R33/0052 , G01R33/09 , G01R33/093 , G11B5/3903 , G11B5/3906 , G11B5/3909 , G11B2005/3996 , H01F10/3218 , H01F10/3263 , H01F10/3268 , H01F10/3272 , H01L43/02 , H01L43/10 , H01L43/12
Abstract: A spin valve magnetoresistance element has an even number of free layer structures for which half has an antiferromagnetic coupling and the other half has a ferromagnetic coupling with respect to associated pinned layers. The different couplings are the result of an even number different spacer layers having respective different thicknesses.
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64.发明申请公开(公告)号：US20160359103A1
公开(公告)日：2016-12-08
申请号：US15165322
申请日：2016-05-26
Applicant: Allegro Microsystems, LLC
Inventor： Claude Fermon , Paolo Campiglio , Bryan Cadugan
CPC classification number: H01L43/08 , B82Y10/00 , G01R33/0052 , G01R33/09 , G01R33/093 , G11B5/3903 , G11B5/3906 , G11B5/3909 , G11B2005/3996 , H01F10/3218 , H01F10/3263 , H01F10/3268 , H01F10/3272 , H01L43/02 , H01L43/10 , H01L43/12
Abstract: A spin valve magnetoresistance element has an even number of free layer structures for which half has an antiferromagnetic coupling and the other half has a ferromagnetic coupling with respect to associated pinned layers. The different couplings are the result of an even number different spacer layers having respective different thicknesses.
Abstract translation: 自旋阀磁阻元件具有偶数个自由层结构，其中一半具有反铁磁耦合，另一半具有相对于相关联的固定层的铁磁耦合。 不同的耦合是具有各自不同厚度的偶数不同间隔层的结果。
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公开(公告)号：US09291876B2
公开(公告)日：2016-03-22
申请号：US13904356
申请日：2013-05-29
Applicant: Allegro Microsystems, LLC
Inventor： Bryan Cadugan , Alexander Latham
CPC classification number: G03B13/34 , G03B3/10 , H02P7/00 , H02P23/0004 , H02P25/028 , H02P25/034 , H02P31/00
Abstract: A system for controlling a motor may include a motor driver circuit for driving a camera motor. A memory capable of storing a plurality of parameters for controlling the camera motor may also be included. A set of parameters from the memory may be chosen to be applied to driving the motor. A motor control module may receive a signal from the control logic module, apply the chosen set of parameters to driving the camera motor, and command the motor driver circuit to drive the motor in accordance with the applied set of parameters. The parameters may be chosen based on desired behavior of the system and various other stimuli.
Abstract translation: 用于控制电动机的系统可以包括用于驱动照相机电动机的电动机驱动器电路。 还可以包括能够存储用于控制照相机电动机的多个参数的存储器。 可以选择来自存储器的一组参数来应用于驱动电动机。 电机控制模块可以从控制逻辑模块接收信号，应用所选择的一组参数来驱动摄像机电机，并且根据所应用的一组参数命令电动机驱动电路来驱动电动机。 可以基于系统的期望行为和各种其它刺激来选择参数。
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Patent Agency Ranking
公开(公告)号：US12210040B2
公开(公告)日：2025-01-28
申请号：US17648310
申请日：2022-01-19
Applicant: Allegro MicroSystems, LLC
Inventor： Shaun D. Milano , Bryan Cadugan , Michael C. Doogue , Alexander Latham , William P. Taylor , Harianto Wong , Sundar Chetlur
Abstract: Systems and methods described herein are directed towards integrating a shield layer into a current sensor to shield a magnetic field sensing element and associated circuitry in the current sensor from electrical, voltage, or electrical transient noise. In an embodiment, a shield layer may be disposed along at least one surface of a die supporting a magnetic field sensing element. The shield layer may be disposed in various arrangements to shunt noise caused by a parasitic coupling between the magnetic field sensing element and the current carrying conductor away from the magnetic field sensing element.
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公开(公告)号：US20230375678A1
公开(公告)日：2023-11-23
申请号：US17663896
申请日：2022-05-18
Applicant: Allegro MicroSystems, LLC
Inventor： Bryan Cadugan , Adam Lee , George Williams
IPC: G01S7/4863 , G01S7/4865 , G01S7/487 , G01S17/32
CPC classification number: G01S7/4863 , G01S7/4865 , G01S7/4873 , G01S17/32
Abstract: Methods and apparatus for processing signal return of photons reflected by a target illuminated by laser energy using at least one threshold. Parameters of pulses in the signal return exceeding one or more thresholds can be stored in memory. Example parameters include time of flight (ToF) and a time over threshold (ToT).
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公开(公告)号：US20230375644A1
公开(公告)日：2023-11-23
申请号：US18366148
申请日：2023-08-07
Applicant: Allegro MicroSystems, LLC , Commissariat à l'énergie atomique et aux énergies alternatives
Inventor： Alexander Latham , Claude Fermon , Jason Boudreau , Myriam Pannetier-Lecoeur , Bryan Cadugan , Hernán D. Romero
Abstract: A magnetic field sensor includes a first coil responsive to a first AC coil drive signal having a first frequency, a magnetic field sensing element responsive to a sensing element drive signal and configured to simultaneously detect a directly coupled magnetic field generated by the first coil and a reflected magnetic field generated by an eddy current induced in a conductive target by the first coil, the conductive target disposed proximate to the magnetic field sensing element, the magnetic field sensing element further configured to generate a magnetic field signal, a second coil responsive to a second AC coil drive signal having a second frequency that is the same as the first frequency and current sensing circuitry configured to measure a magnitude of the second AC coil drive signal that causes the magnetic field signal to be approximately zero.
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公开(公告)号：US20230333216A1
公开(公告)日：2023-10-19
申请号：US17659033
申请日：2022-04-13
Applicant: Allegro MicroSystems, LLC
Inventor： Bryan Cadugan , Andrew S. Huntington , Sapna S. Mukherjee , Adam Lee , George Williams , Richard Migliaccio , William P. Taylor
IPC: G01S7/4863 , G01S17/894 , G02B5/02 , G01S7/481 , G02B1/10 , G01S7/4865
CPC classification number: G01S7/4863 , G01S7/4816 , G01S7/4865 , G01S17/894 , G02B1/10 , G02B5/0273
Abstract: Methods and apparatus for photodetection having parallax compensation for near and far object signal return. In embodiment, a photoreceiver comprising a at least one light-sensitive pixel to transduce light to electrical signals has at least a first one of the pixels including a first subpixel region having a first light response characteristic and a second subpixel region having a second light response characteristic, wherein the first and second light characteristics are configured to correspond to variations in intensity of reflected light from objects at different distances when the portion of the reflected light reaching the first one of the pixels imaged onto the first and second subpixel regions.
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公开(公告)号：US20230333213A1
公开(公告)日：2023-10-19
申请号：US17659035
申请日：2022-04-13
Applicant: Allegro MicroSystems, LLC
Inventor： Bryan Cadugan , Andrew S. Huntington , Sapna S. Mukherjee , Adam Lee , George Williams , Richard Migliaccio , William P. Taylor
IPC: G01S7/481 , G02B27/00 , G01S17/10 , G01S7/4863
CPC classification number: G01S7/4816 , G02B27/0025 , G01S17/10 , G01S7/4863 , G02B5/02
Abstract: Methods and apparatus for a system including an optic to receive light from near objects and far objects and a photoreceiver optically coupled to the optic, the photoreceiver including a photodetector array. A light scattering structure is positioned a distance from the photodetector array to compensate for parallax effects for the received energy from the near objects and the far objects. The light scattering structure is configured to scatter light onto pixels of the photodetector array.
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