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11.发明申请公开(公告)号：US20220196461A1
公开(公告)日：2022-06-23
申请号：US17555924
申请日：2021-12-20
Applicant: NEC Laboratories America, Inc.
Inventor： Junqiang Nochur HU , Ting WANG , Shuji MURAKAMI
IPC: G01H9/00
Abstract: An advance in the art is made according to aspects of the present disclosure directed to a DAS method that utilizes a differential phase to detect phase change(s) between two locations of a DAS sensing fiber to ascertain vibrational/acoustic activities/environment at intermediary fiber location(s) between the two locations. Additionally, systems, methods, and structures according to aspects of the present disclosure may employ a fiber coil comprising a segment of fiber wrapped in acoustic sensitive material (“acoustic signal collector”). The material responds to an environmental acoustic signal, which results in strain(s) applied to the fiber. Furthermore, rather than using a measured phase difference between the two ends of the fiber coil, systems, methods, and structures according to aspects of the present disclosure utilize all samples collected from one end of the fiber coil to the other end of the fiber coil (the left side of the coil to the right side of the coil)—which may be extended further. Every two samples covering a partial or an entire section of the fiber coil are used as a pair (a “differential pair”) to determine a phase difference and the results from all the pairs are averaged to form one output exhibiting a reduced noise level and more stable signal as compared to prior art methods.
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公开(公告)号：US20210360029A1
公开(公告)日：2021-11-18
申请号：US17320187
申请日：2021-05-13
Applicant: NEC Laboratories America, Inc.
Inventor： Ming-Fang HUANG , Ting WANG
IPC: H04L29/06 , H04B10/077 , H04B10/50
Abstract: Aspects of the present disclosure describe physical layer security in optical telecommunications networks wherein a filtering-based physical security is provided by a wavelength tunable distributed fiber optical sensing (DFOS) system operating simultaneously on the telecommunications network.
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公开(公告)号：US20210358149A1
公开(公告)日：2021-11-18
申请号：US17321479
申请日：2021-05-16
Applicant: NEC Laboratories America, Inc.
Inventor： Yue TIAN , Ting WANG , Shengtao SUN
Abstract: Aspects of the present disclosure describe systems, methods, and structures for anti-spoofing 3D face reconstruction using infrared structured light that advantageously reconstructs 3D face structures for facial recognition and detect face surface material(s) such that human skin may be effectively distinguished from artifacts thereby providing additional security for facial recognition including immunity from 2D/3D print attacks including face masks and special make-ups.
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14.发明申请公开(公告)号：US20210318164A1
公开(公告)日：2021-10-14
申请号：US17227325
申请日：2021-04-11
Applicant: NEC Laboratories America, Inc.
Inventor： Sarper OZHARAR , Ting WANG
Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously enable and/or facilitate the continuous, real-time monitoring and identification vehicle speed, vehicle direction, vehicle axle width, vehicle type, total number of vehicle axles, and vehicle count. The DFOS sensing fiber is advantageously positioned underneath a roadway/highway in a novel arrangement/layout and temporal measurements are made to provide vehicle identification.
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公开(公告)号：US20210310858A1
公开(公告)日：2021-10-07
申请号：US17195544
申请日：2021-03-08
Applicant: NEC Laboratories America, Inc.
Inventor： Ming-Fang HUANG , Ting WANG
Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously are employed in smart stadium or other venue applications, such applications including: parking lot security and management; intrusion detection; social sensing; air quality monitoring and early fire detection—among others.
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Patent Agency Ranking
公开(公告)号：US20210310836A1
公开(公告)日：2021-10-07
申请号：US17196939
申请日：2021-03-09
Applicant: NEC Laboratories America, Inc.
Inventor： Ming-Fang HUANG , Ting WANG , Tiejun XIA , Glenn WELLBROCK , Yoshiaki AONO
Abstract: Aspects of the present disclosure describe hybrid distributed fiber optic sensing systems, methods, and structures that advantageously are extensions of existing fiber optic infrastructure and provide distributed fiber optic sensing (DFOS) functionality to the existing infrastructure.
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公开(公告)号：US20210181059A1
公开(公告)日：2021-06-17
申请号：US17115651
申请日：2020-12-08
Applicant: NEC Laboratories America, Inc.
Abstract: Aspects of the present disclosure describe systems, methods and structures providing bipolar cyclic coding for Brillouin optical time domain analysis that may be employed—for example—to determine high accuracy temperature and/or strain measurements along an optical fiber. Systems, methods, and structures according to the present disclosure employ the bipolar cyclic coding technique that advantageously overcomes the problems that plague the prior art and provides extended sensing range resulting from superior signal-to-noise characteristics.
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18.发明申请公开(公告)号：US20190007137A1
公开(公告)日：2019-01-03
申请号：US15964815
申请日：2018-04-27
Applicant: NEC Laboratories America, Inc.
Inventor： Ivan DJORDJEVIC , Shaoliang ZHANG , Ting WANG
IPC: H04B10/112 , H03M13/11 , H03M13/25 , H04L27/36 , H04L1/00
CPC classification number: H04B10/1125 , G02B6/0288 , H03M13/1102 , H03M13/1171 , H03M13/255 , H03M13/3761 , H04B10/11 , H04B10/2581 , H04B10/5161 , H04J14/04 , H04L1/0057 , H04L27/36 , H04L63/0428 , H04L63/08
Abstract: Aspects of the present disclosure describe systems, methods, and structures for physical layer security using hybrid free-space optical and terahertz transmission technologies that advantageously overcome atmospheric characteristics that infirmed the prior art.
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公开(公告)号：US20170209726A1
公开(公告)日：2017-07-27
申请号：US15412431
申请日：2017-01-23
Applicant: NEC Laboratories America, Inc.
Inventor： Junqiang HU , Ting WANG
CPC classification number: A62C37/50 , A62C13/76 , H04Q9/00 , H04Q2209/82 , H04Q2209/883
Abstract: Aspects of the present disclosure describe apparatus, methods and systems for monitoring the operational status of fire extinguishers through the utilization of optically sensed, color profile determinations of a pressure gauge positioned on the fire extinguisher as well as the utilization of vibrational, and location sensing devices. Advantageously, monitoring apparatus according to the present disclosure are networkable, and a number of their operational characteristics may be configured via the network and associated servers. Furthermore, monitoring apparatus according to the present disclosure may employ vibrational, acceleration, GPS, RFID, and ultrasonic sensors to detect movement, location, and obstructions. In sharp contrast to the prior art, apparatus, methods and systems according to the present disclosure operate with existing fire extinguishers and provide a convenient, cost effective, and highly functional upgrade path for deployed fire extinguishers.
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公开(公告)号：US20140178071A1
公开(公告)日：2014-06-26
申请号：US14046588
申请日：2013-10-04
Applicant: NEC Laboratories America, Inc.
Inventor： Shaoliang ZHANG , Fatih YAMAN , Ting WANG , Yoshihisa INADA , Takaaki OGATA , Yahuhiro AOKI
IPC: H04B10/532 , H04J14/06
CPC classification number: H04J14/06 , H04B10/5561
Abstract: Methods, structures and systems for generating different polarization multiplexed signals wherein the drivers of the modulators are generic while a software-controlled manager allows the carrying of any standard 10 G/40 G/100 G data while—at the same time—being adaptively adjustable according to specific link requirements and users' requests in both dispersion-managed and uncompensated links.
Abstract translation: 用于产生不同偏振复用信号的方法，结构和系统，其中调制器的驱动器是通用的，而软件控制的管理器允许携带任何标准的10G / 40G / 100G数据，同时可自适应地调节 根据具体链路要求和用户在色散管理和无补偿链路中的请求。
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