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公开(公告)号：US20210165037A1
公开(公告)日：2021-06-03
申请号：US17174866
申请日：2021-02-12
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
Abstract: Gain independent reference channel measurement system and method. A method of making robust, stable measurements, in a variety of different applications is disclosed. More specifically, this disclosure describes systems and methods relating to performing gain independent reference channel measurements by making two phase measurements of a device under test. Mathematically, the measurements are combined and many common mode parameters drop out. The result yields an analysis of a device under test analysis which mitigated errors, predominately arising from environmental variations and changes in circuit behavior stemming from swings in signal input.
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公开(公告)号：US20160174855A1
公开(公告)日：2016-06-23
申请号：US15058932
申请日：2016-03-02
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
CPC classification number: A61B5/02108 , A61B5/022 , A61B5/02427 , A61B5/14551 , A61B5/486 , A61B5/684 , A61B5/721 , G01S3/783 , G01S5/16 , G01S17/06 , G01S17/87
Abstract: One or more electromagnetic radiation sources, such as a light emitting diode, may emit electromagnetic waves into a volume of space. When an object enters the volume of space, the electromagnetic waves may reflect off the object and strike one or more position sensitive detectors after passing through an imaging optical system such as glass, plastic lens, or a pinhole located at known distances from the sources. Mixed signal electronics may process detected signals at the position sensitive detectors to calculate position information as well as total reflected light intensity, which may be used in medical and other applications. A transparent barrier may separate the sources and detectors from the objects entering the volume of space and reflecting emitted waves. Methods and devices are provided.
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公开(公告)号：US20210293535A1
公开(公告)日：2021-09-23
申请号：US16826257
申请日：2020-03-22
Applicant: ANALOG DEVICES, INC.
Inventor： Shrenik DELIWALA , Paul W. STEVENS , William Edward O'MARA
IPC: G01B11/27 , H01L29/872 , H01L29/66
Abstract: Aspects of the embodiments are directed to non-contact systems, methods and devices for optical detection of objects in space at precise angles. This method involves the design and fabrication of photodiode arrays for measuring angular response using self-aligned Schottky platinum silicide (PtSi) PIN photodiodes (PN-diodes with an intrinsic layer sandwiched in between) that provide linear angular measurements from incident light in multiple dimensions. A self-aligned device is defined as one in which is not sensitive to photomask layer registrations. This design eliminates device offset between “left” and right” channels for normal incident light as compared to more conventional PIN diode constructions.
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公开(公告)号：US20200284621A1
公开(公告)日：2020-09-10
申请号：US16880109
申请日：2020-05-21
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
IPC: G01D5/353 , G02B6/42 , G02B6/02 , H01L31/167
Abstract: Fiber Bragg grating interrogation and sensing used for strain and temperature measurements. A simple, broadband light source is used to interrogate one or more fiber Bragg grating (FBG). Specifically, a packaged LED is coupled to fiber, the light therefrom is reflected off a uniform FBG. The reflected light is subsequently analyzed using a filter and a plurality of Si photodetectors. In particular, the filter is a chirped FBG or an optically coated filter, in accordance with some embodiments. Measurement analysis is performed by ratio of intensities at the plurality of detectors, at least in part.
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公开(公告)号：US20180338696A1
公开(公告)日：2018-11-29
申请号：US15988378
申请日：2018-05-24
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
IPC: A61B5/0408 , H03F3/00 , H03F1/10 , A61B5/00
Abstract: System and apparatus for measuring biopotential and implementation thereof. A device for mitigating electromagnetic interference (EMI) thereby increasing signal-to-noise ratio is disclosed. Specifically, the present disclosure relates to an elegant, novel circuit for measuring a plurality of biopotentials in useful in a variety of medical applications. This allows for robust, portable, low-power, higher S/N devices which have historically required a much bigger footprint.
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Patent Agency Ranking
公开(公告)号：US20180053026A1
公开(公告)日：2018-02-22
申请号：US15786014
申请日：2017-10-17
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA , Alain Valentin GUERY
CPC classification number: G06K7/10732 , A61B5/00 , A61B5/0059 , A61B5/15003 , A61B5/150358 , A61B5/157 , A61B2562/0295 , G01N33/66 , G06K7/10722 , G06K7/10821 , G06K7/1404 , G06K19/06018 , G06K19/06037
Abstract: Embodiments of the present disclosure provide code readers for reading codes provided as patterns imprinted on objects. Light interacts with a pattern by e.g. being reflected from or transmitted through the pattern, and at least some of the light that has interacted with the pattern is incident on photosensitive element(s) of one or more photodetectors of a code reader. The code reader employs centroid-measuring photodetector(s), i.e. photodetectors that detect light in such a manner that centroid of a pattern can be obtained directly from the photocurrents generated as a result of the photosensitive elements detecting light incident thereon. The code reader is then configured to process the detected light to determine a centroid of the pattern from the detected light and to decode data encoded in the pattern based on a position of the centroid. Such code readers are substantially less complex than camera-based devices and avoid mechanical scanning.
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公开(公告)号：US20230304917A1
公开(公告)日：2023-09-28
申请号：US18325746
申请日：2023-05-30
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
IPC: G01N15/14 , G08B17/107
CPC classification number: G01N15/1434 , G01N15/1429 , G08B17/107
Abstract: Device for improving an optical detecting smoke apparatus and implementing thereof. Apparatus and methods for detecting the presence of smoke in a small, long-lasting smoke detector are disclosed. Specifically, the present disclosure shows how to build one or more optimized blocking members in a smoke detector to augment signal to noise ratio. This is performed while keeping the reflections from the housing structure to a very low value while satisfying all the other peripheral needs of fast response to smoke and preventing ambient light. This allows very small measurements of light scattering of the smoke particles to be reliable in a device resistant to the negative effects of dust. In particular, geometrical optical elements, e.g., cap and optical deflection elements, are disclosed.
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公开(公告)号：US20220087588A1
公开(公告)日：2022-03-24
申请号：US17542626
申请日：2021-12-06
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
Abstract: System and apparatus for measuring biopotential and implementation thereof. A device for mitigating electromagnetic interference (EMI) thereby increasing signal-to-noise ratio is disclosed. Specifically, the present disclosure relates to an elegant, novel circuit for measuring a plurality of biopotentials in useful in a variety of medical applications. This allows for robust, portable, low-power, higher S/N devices which have historically required a much bigger footprint.
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公开(公告)号：US20220011223A1
公开(公告)日：2022-01-13
申请号：US17327172
申请日：2021-05-21
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
IPC: G01N21/3504 , G01N21/01
Abstract: System and apparatus for robust, portable gas detection. Specifically, this disclosure describes apparatuses and systems for optical gas detection in a compact package using two optical pathways. There is a need for a very compact, low-power, gas detection system for gases such as CO2, NOx, water vapor, methane, etc. This disclosure provides an ultra-compact and highly stable and efficient optical measurement system based on principals of optical absorption spectroscopy using substantially collinear pathways.
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公开(公告)号：US20210113842A1
公开(公告)日：2021-04-22
申请号：US16987743
申请日：2020-08-07
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
IPC: A61N1/37
Abstract: System and apparatus for pace detection and implementation thereof. A device for detecting pace pulse in the presence of ECG waveforms is disclosed. Specifically, the present disclosure relates to an elegant, novel circuit and method for presenting pace pulse data with or without ECG signals measuring for use in useful in a variety of medical applications. This allows for robust, portable, low-power, higher S/N devices which have historically required a much bigger footprint and complexity.
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