公开(公告)号：US20170163354A1

公开(公告)日：2017-06-08

申请号：US15368015

申请日：2016-12-02

Applicant: Drexel University

Inventor： Richard Anthony Primerano ,  Moshe Kam ,  Kapil R. Dandekar ,  Cole Gindhart

IPC: H04B11/00

CPC classification number: H04B11/00

Abstract: Ultrasonic through metal communication systems are an effective solution for transmitting data across a metal barrier when the structural integrity of the barrier cannot be compromised by physically penetrating it. Substantial improvements in through metal communication systems have been made in recent years, enabling high speed communications of up to 15 Mbps, as well as power transmission up to 30 W across flat walls. A system is described that allows for ultrasonic through metal communication across the wall of a steel tube. Primary challenges of 1) transducer contact, 2) curvature effect on echoes, and 3) alignment are analyzed and addressed through the use of radial mode piezoelectric transducers, transducer “horns”, and Electromagnetic Acoustic Transducers (EMATs). The resulting system shows no significant loss due to changes in alignment, allows for the use of either piezoelectric transducers or EMATs externally, and achieves max data rates of approximately 600 kbps without echo equalization.

公开(公告)号：US10594409B2

公开(公告)日：2020-03-17

申请号：US15368015

申请日：2016-12-02

Applicant: Drexel University

Inventor： Richard Anthony Primerano ,  Moshe Kam ,  Kapil R. Dandekar ,  Cole Gindhart

IPC: H04B11/00

Abstract: Ultrasonic through metal communication systems are an effective solution for transmitting data across a metal barrier when the structural integrity of the barrier cannot be compromised by physically penetrating it. Substantial improvements in through metal communication systems have been made in recent years, enabling high speed communications of up to 15 Mbps, as well as power transmission up to 30 W across flat walls. A system is described that allows for ultrasonic through metal communication across the wall of a steel tube. Primary challenges of 1) transducer contact, 2) curvature effect on echoes, and 3) alignment are analyzed and addressed through the use of radial mode piezoelectric transducers, transducer “horns”, and Electromagnetic Acoustic Transducers (EMATs). The resulting system shows no significant loss due to changes in alignment, allows for the use of either piezoelectric transducers or EMATs externally, and achieves max data rates of approximately 600 kbps without echo equalization.

公开(公告)号：US20150295945A1

公开(公告)日：2015-10-15

申请号：US14686420

申请日：2015-04-14

Applicant: Drexel University

Inventor： Raymond Joseph Canzanese, JR. ,  Spiros Mancoridis ,  Moshe Kam

IPC: H04L29/06

CPC classification number: H04L63/145 ,  G06F9/45545 ,  G06F21/50 ,  G06F21/53 ,  G06F21/55 ,  G06F21/566 ,  G06F2009/45587 ,  H04L63/1408

Abstract: A malware detection system and method detects changes in host behavior indicative of malware execution. The system uses linear discriminant analysis (LDA) for feature extraction, multi-channel change-point detection algorithms to infer malware execution, and a data fusion center (DFC) to combine local decisions into a host-wide diagnosis. The malware detection system includes sensors that monitor the status of a host computer being monitored for malware, a feature extractor that extracts data from the sensors corresponding to predetermined features, local detectors that perform malware detection on each stream of feature data from the feature extractor independently, and a data fusion center that uses the decisions from the local detectors to infer whether the host computer is infected by malware.

Abstract translation: 恶意软件检测系统和方法检测指示恶意软件执行的主机行为的变化。 该系统使用线性判别分析（LDA）进行特征提取，多通道变化点检测算法来推断恶意软件执行，以及数据融合中心（DFC）将局部决策结合到一个主机范围的诊断中。 恶意软件检测系统包括监视被监控恶意软件的主机的状态的传感器，从对应于预定特征的传感器中提取数据的特征提取器，对来自特征提取器的每个特征数据流进行恶意软件检测的本地检测器 ，以及使用来自本地检测器的决定来推断主机是否被恶意软件感染的数据融合中心。

公开(公告)号：US09853997B2

公开(公告)日：2017-12-26

申请号：US14686420

申请日：2015-04-14

Applicant: Drexel University

Inventor： Raymond Joseph Canzanese, Jr. ,  Spiros Mancoridis ,  Moshe Kam

IPC: G06F11/00 ,  G06F12/14 ,  G06F12/16 ,  G08B23/00 ,  H04L29/06 ,  G06F21/55 ,  G06F9/455 ,  G06F21/53 ,  G06F21/56 ,  G06F21/50

CPC classification number: H04L63/145 ,  G06F9/45545 ,  G06F21/50 ,  G06F21/53 ,  G06F21/55 ,  G06F21/566 ,  G06F2009/45587 ,  H04L63/1408

Abstract: A malware detection system and method detects changes in host behavior indicative of malware execution. The system uses linear discriminant analysis (LDA) for feature extraction, multi-channel change-point detection algorithms to infer malware execution, and a data fusion center (DFC) to combine local decisions into a host-wide diagnosis. The malware detection system includes sensors that monitor the status of a host computer being monitored for malware, a feature extractor that extracts data from the sensors corresponding to predetermined features, local detectors that perform malware detection on each stream of feature data from the feature extractor independently, and a data fusion center that uses the decisions from the local detectors to infer whether the host computer is infected by malware.

公开(公告)号：US20150333943A1

公开(公告)日：2015-11-19

申请号：US14138188

申请日：2013-12-23

Applicant: DREXEL UNIVERSITY

Inventor： Richard Primerano ,  Kevin Wanuga ,  Magdalena Bielinski ,  Kapil R. Dandekar ,  Moshe Kam ,  Guillermo Sosa

IPC: H04L27/26 ,  H04L27/01 ,  H04L5/00 ,  H04L27/36

CPC classification number: H04L27/262 ,  H04B11/00 ,  H04L1/0005 ,  H04L5/0007 ,  H04L5/0046 ,  H04L27/01 ,  H04L27/2614 ,  H04L27/362 ,  Y02D70/144 ,  Y02D70/48

Abstract: A link adaptive orthogonal frequency-division multiplexed (OFDM) ultrasonic physical layer is provided that is capable of high data rate communication through metallic structures. The use of an adaptive OFDM subcarrier-based modulation technique mitigates the effects of severe frequency selective fading of the through-metal communication link and improves spectral efficiency by exploiting the slow-varying nature of the channel. To address the potential ill effects of peak-to-average power ratio (PAPR) and to make more efficient use of the power amplifiers in the system, the invention modifies and implements a symbol rotation and inversion-based PAPR reduction algorithm in the adaptive OFDM framework. This joint adaptive physical layer is capable of increasing data rates by roughly 220% in comparison to conventional narrowband techniques at average transmit powers of roughly 7 mW while constrained to a desired BER.

Abstract translation: 提供了能够通过金属结构进行高数据速率通信的链路自适应正交频分复用（OFDM）超声波物理层。 使用基于OFDM子载波的自适应调制技术减轻了通过金属通信链路的严重频率选择性衰落的影响，并通过利用信道的慢变性质来提高频谱效率。 为了解决峰均功率比（PAPR）的潜在不良影响，并且为了更有效地利用系统中的功率放大器，本发明在自适应OFDM中修改并实现了基于符号旋转和反演的PAPR降低算法 框架。 与传统的窄带技术相比，这种联合自适应物理层能够将数据速率提高大约220％，平均发射功率大约为7mW，同时被限制到期望的BER。

公开(公告)号：US20170109879A1

公开(公告)日：2017-04-20

申请号：US15128003

申请日：2015-03-31

Applicant: Drexel University ,  The Trustees of the University of Pennsylvania

Inventor： Leonardo Urbano ,  Moshe Kam ,  Puneet Masson ,  Matthew Vermilyea

IPC: G06T7/00 ,  G06T7/11 ,  G06T7/90 ,  G06T7/136 ,  G06T7/70 ,  G06K9/62 ,  G06K9/00 ,  G06T7/20

CPC classification number: G06T7/0012 ,  G06K9/0014 ,  G06K9/6276 ,  G06K2009/3291 ,  G06T5/30 ,  G06T7/11 ,  G06T7/136 ,  G06T7/155 ,  G06T7/20 ,  G06T7/70 ,  G06T7/90 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/10056 ,  G06T2207/30024 ,  G06T2207/30241 ,  G06T2210/41

Abstract: One aspect of the invention provides a computer-implemented method for tracking a plurality of spermatozoa. The method includes: identifying a coordinate for each of the plurality of spermatozoa in a plurality of video frames; and applying a nearest-neighbor joint probabilistic data association filter (NN-JPDAF) algorithm to associate the coordinates with one or a plurality of sperm tracks. Another aspect of the invention provides a non-transitory computer-readable medium containing program instructions executable by a processor. The computer-readable medium can include program instructions for performing a method as described herein. Another aspect of the invention provides a system including: a processor and a computer-readable medium including program instructions for performing a method as described herein.

公开(公告)号：US20140161169A1

公开(公告)日：2014-06-12

申请号：US14119338

申请日：2012-05-25

Applicant: DREXEL UNIVERSITY

Inventor： Richard Primerano ,  Kevin Wanuga ,  Magdalena Bielinski ,  Kapil R. Dandekar ,  Moshe Kam ,  Guillermo A. Sosa

IPC: H04L27/26 ,  H04L27/01

CPC classification number: H04L27/262 ,  H04B11/00 ,  H04L1/0005 ,  H04L5/0007 ,  H04L5/0046 ,  H04L27/01 ,  H04L27/2614 ,  H04L27/362 ,  Y02D70/144 ,  Y02D70/48

Abstract: A link adaptive orthogonal frequency-division multiplexed (OFDM) ultrasonic physical layer is provided that is capable of high data rate communication through metallic structures. The use of an adaptive OFDM subcarrier-based modulation technique mitigates the effects of severe frequency selective fading of the through-metal communication link and improves spectral efficiency by exploiting the slow-varying nature of the channel. To address the potential ill effects of peak-to-average power ratio (PAPR) and to make more efficient use of the power amplifiers in the system, the invention modifies and implements a symbol rotation and inversion-based PAPR reduction algorithm in the adaptive OFDM framework. This joint adaptive physical layer is capable of increasing data rates by roughly 220% in comparison to conventional narrowband techniques at average transmit powers of roughly 7 mW while constrained to a desired BER.

Abstract translation: 提供了能够通过金属结构进行高数据速率通信的链路自适应正交频分复用（OFDM）超声波物理层。 使用基于OFDM子载波的自适应调制技术减轻了通过金属通信链路的严重频率选择性衰落的影响，并通过利用信道的慢变性质来提高频谱效率。 为了解决峰均功率比（PAPR）的潜在不良影响，并且为了更有效地利用系统中的功率放大器，本发明在自适应OFDM中修改并实现了基于符号旋转和反演的PAPR降低算法 框架。 与传统的窄带技术相比，这种联合自适应物理层能够将数据速率提高大约220％，平均发射功率大约为7mW，同时被限制到期望的BER。