公开(公告)号：US11206341B2

公开(公告)日：2021-12-21

申请号：US16542709

申请日：2019-08-16

Applicant: L-3 COMMUNICATIONS CORPORATION—INSIGHT TECHNOLOGY DIVISION

Inventor： Matthew Reed ,  Joseph W. Robbins

IPC: H04N5/33 ,  H04N5/225 ,  G02B23/18 ,  G02B23/12 ,  H04N5/232 ,  F41G1/32

Abstract: A fusion night vision system has a plurality of hinged joints that allow an operator to adjust the distance between the left eye piece and the right eyepiece while allowing a row of pixels from a display to be maintained viewable through the right eye piece parallel with an imaginary line formed by an optical axis of the left eye piece with an optical axis of the right eye piece.

公开(公告)号：US10033557B2

公开(公告)日：2018-07-24

申请号：US15091960

申请日：2016-04-06

Applicant: L-3 COMMUNICATIONS CORPORATION

Inventor： Michael G. Abernathy ,  Nathaniel Flournoy Lovelace, III

IPC: H04L25/03 ,  H04N21/436 ,  H04N21/4363 ,  H04N21/41 ,  H04N21/43 ,  H04N21/40 ,  G09G5/00 ,  H04L25/02

Abstract: Digital video signals are transmitted from a transmitter to a receiver via a digital video interface including shielded twisted pair cables that are surrounded by an over-braid shield. The over-braid shield is connected to a chassis ground at a transmitting end and the receiving end. An interface conveys the received signals to receiver processing circuitry. The interface is connected to an isolated ground, isolating the receiver processing circuitry. The twisted pairs are also connected to the isolated ground, such that a return current is forced back through the twisted pair cable shields rather than the over-braid shield. This reduces electromagnetic emissions and confines transients primarily to the over-braid shield.

公开(公告)号：US09831901B2

公开(公告)日：2017-11-28

申请号：US15138898

申请日：2016-04-26

Applicant: L-3 Communications Corporation

Inventor： Elias Bonaventure Kpodzo ,  Robert Holland ,  Paul Dourbal ,  Yanhua Deng ,  Paul Prucnal ,  Andrew McCandless

IPC: H04K3/00 ,  H04B1/10 ,  H04B10/00 ,  H04B17/318 ,  H04B17/336 ,  H04L12/26 ,  H04B10/079 ,  H04B10/2507 ,  H04B10/2575

CPC classification number: H04B1/1027 ,  H04B1/10 ,  H04B1/109 ,  H04B10/00 ,  H04B10/07955 ,  H04B10/2507 ,  H04B10/2575 ,  H04B17/318 ,  H04B17/336 ,  H04B2210/006 ,  H04K3/20 ,  H04K3/228 ,  H04L43/16

Abstract: An interference cancellation system (ICS) may be used with a communication system to prevent or minimize interference from one or more sources. The ICS may receive radio frequency (RF) signals comprised of one or more signals of interest (SOI) and multiple interfering signals. An interference estimation processor (IEP) may be used to estimate the one or more interfering signals. The interfering signals may be estimated using spatial and/or time diversity, which may be combined with statistical methods. The estimated interfering signals may be sent to the ICS, which may use the estimated interference signal to cancel the interference and output the SOI.

公开(公告)号：US20170150594A1

公开(公告)日：2017-05-25

申请号：US14949143

申请日：2015-11-23

Applicant: L-3 Communications Corporation

Inventor： Dennis JONES ,  Christopher Anthony GRACIA ,  Larry BROWN ,  David NAIL

IPC: H05K1/02 ,  H05K3/46 ,  H05K1/03 ,  H05K1/11 ,  H05K3/00

CPC classification number: H05K1/0251 ,  H05K1/0222 ,  H05K3/429

Abstract: A multilayer printed circuit board comprising: i) a plurality of circuit board layers disposed in parallel planes to one another; ii) an outer via forming an electrical connection between a conductor contact on a first circuit board layer and a conductor contact on a second circuit board layer, wherein the outer via has a hollow central core; and iii) an inner via formed within the hollow central core of the outer via. The inner via forms an electrical connection between a conductor contact on a third circuit board layer and a conductor contact on a fourth circuit board layer. The inner via and the outer via are substantially concentric cylinders.

公开(公告)号：US09651652B2

公开(公告)日：2017-05-16

申请号：US14175840

申请日：2014-02-07

Applicant: L-3 Communications Corporation

Inventor： Elias Bonaventure Kpodzo ,  Robert Holland

IPC: G01S3/02 ,  G01S5/02 ,  G01S19/21

CPC classification number: G01S5/0215 ,  G01S3/043 ,  G01S19/21

Abstract: Systems and methods for cancelling interference while performing direction/location. A combined signal of interest plus interference signal may be received. A copy or sample of the interference signal may be determined. The interference signal and the combined signal of interest plus interference signal may be converted to the optical domain. The interference signal may be optically phase shifted by −180 degrees, which may result in an optically inverted interference signal. The optically inverted interference signal may be variably optically attenuated and/or variably optically time delayed. As a result, interference cancellation of the interference signal from the combined signal of interest plus interference signal may be achieved, resulting in 50 dB or more of cancellation of the interference signal. Direction and/or location finding techniques can be applied to received signals during and/or after interference cancellation.

公开(公告)号：US09444502B2

公开(公告)日：2016-09-13

申请号：US13899368

申请日：2013-05-21

Applicant: L-3 Communications Corporation

Inventor： Elias Bonaventure Kpodzo ,  Robert Holland ,  Yanhua Deng ,  Paul Prucnal ,  Andrew McCandless ,  Paul Dourbal

IPC: H04B1/10 ,  H04K3/00

CPC classification number: H04B1/1027 ,  H04B1/10 ,  H04B1/109 ,  H04B10/00 ,  H04B10/07955 ,  H04B10/2507 ,  H04B10/2575 ,  H04B17/318 ,  H04B17/336 ,  H04B2210/006 ,  H04K3/20 ,  H04K3/228 ,  H04L43/16

Abstract: Systems and methods for cancelling interference from a received signal in order to properly detect a signal of interest are disclosed. A combined signal of interest plus interference signal may be received. A copy or sample of the interference signal may be determined. The interference signal and the combined signal of interest plus interference signal may be converted to the optical domain. The interference signal may be optically phase shifted by −180 degrees, which may result in an optically inverted interference signal. The optically inverted interference signal may be variably optically attenuated and/or variably optically time delayed, for example based on a detected output power of an optical subsystem of the interference cancellation system. As a result, interference cancellation of the interference signal from the combined signal of interest plus interference signal may be achieved, resulting in 50 dB or more of cancellation of the interference signal.

Abstract translation: 公开了用于消除来自接收信号的干扰以便适当地检测感兴趣的信号的系统和方法。 可以接收感兴趣的组合信号和干扰信号。 可以确定干扰信号的拷贝或采样。 干扰信号和感兴趣的组合信号加上干扰信号可以转换成光域。 干涉信号可以光学相移-180度，这可能导致光学反相干扰信号。 光学反相干涉信号可以例如基于干扰消除系统的光学子系统的检测到的输出功率而被可变地光衰减和/或可变地光时延。 结果，可以实现来自感兴趣的组合信号和干扰信号的干扰信号的干扰消除，导致干扰信号的消除的50dB或更多。

公开(公告)号：US20160241354A1

公开(公告)日：2016-08-18

申请号：US15138898

申请日：2016-04-26

Applicant: L-3 Communications Corporation

Inventor： Elias Bonaventure Kpodzo ,  Robert Holland ,  Paul Dourbal ,  Yanhua Deng ,  Paul Prucnal ,  Andrew McCandless

IPC: H04K3/00 ,  H04B17/318 ,  H04B17/336 ,  H04B1/10 ,  H04L12/26

CPC classification number: H04B1/1027 ,  H04B1/10 ,  H04B1/109 ,  H04B10/00 ,  H04B10/07955 ,  H04B10/2507 ,  H04B10/2575 ,  H04B17/318 ,  H04B17/336 ,  H04B2210/006 ,  H04K3/20 ,  H04K3/228 ,  H04L43/16

Abstract: An interference cancellation system (ICS) may be used with a communication system to prevent or minimize interference from one or more sources. The ICS may receive radio frequency (RF) signals comprised of one or more signals of interest (SOI) and multiple interfering signals. An interference estimation processor (IEP) may be used to estimate the one or-more interfering signals. The interfering signals may be estimated using spatial and/or time diversity, which may be combined with statistical methods. The estimated interfering signals may be sent to the ICS, which may use the estimated interference signal to cancel the interference and output the SOI.

Abstract translation: 干扰消除系统（ICS）可以与通信系统一起使用，以防止或最小化来自一个或多个源的干扰。 ICS可以接收由一个或多个感兴趣信号（SOI）和多个干扰信号组成的射频（RF）信号。 干扰估计处理器（IEP）可用于估计一个或多个干扰信号。 可以使用可以与统计方法组合的空间和/或时间分集来估计干扰信号。 估计的干扰信号可以发送到ICS，ICS可以使用估计的干扰信号来消除干扰并输出SOI。

公开(公告)号：US20160241283A1

公开(公告)日：2016-08-18

申请号：US15138345

申请日：2016-04-26

Applicant: L-3 Communications Corporation

Inventor： Elias Bonaventure Kpodzo ,  Robert Holland ,  Yanhua Deng ,  Paul Dourbal

IPC: H04B1/10 ,  H04B10/00 ,  H04K3/00

CPC classification number: H04B1/1027 ,  H04B1/10 ,  H04B1/109 ,  H04B10/00 ,  H04B10/07955 ,  H04B10/2507 ,  H04B10/2575 ,  H04B17/318 ,  H04B17/336 ,  H04B2210/006 ,  H04K3/20 ,  H04K3/228 ,  H04L43/16

Abstract: An interference cancellation system (ICS) may be used with a communication system to prevent or minimize interference from one or more sources. The ICS may receive radio RF signals comprised of one or more signals of interest (SOI) and multiple interfering signals. The ICS may use a sample of the interfering signals to cancel the interfering signals from the SOI. The multiple interfering signals may be converted into a single optical signal for cancellation. One or more optical cancellation paths may be used for interference cancellation. Each optical cancellation path may include an optical attenuator and/or an optical delay to achieve phase shifts and/or delays for interference cancellation.

公开(公告)号：US20160156462A1

公开(公告)日：2016-06-02

申请号：US14015443

申请日：2013-08-30

Applicant: L-3 Communications Corporation

Inventor： Richard Norman Winslow ,  Frank A. Costantini

IPC: H04L9/08 ,  H04L29/06

CPC classification number: H04L9/083 ,  H04B7/18506 ,  H04L9/0618 ,  H04L9/0869 ,  H04L9/0891 ,  H04L9/0897 ,  H04L63/061 ,  H04L63/062 ,  H04W12/04

Abstract: A system for performing encryption and/or decryption may include a parent cryptographic device. The parent cryptographic device may be configured to receive a first cryptographic key. The parent cryptographic device may be configured to determine one or more session keys based on the first cryptographic key and/or internally generated random data bits. The parent cryptographic device may be configured to insert the one or more session keys onto one or more child cryptographic devices that are operably connected to the parent cryptographic device. The one or more child cryptographic devices may be configured to receive the one or more session keys from the parent cryptographic device, and perform one or more of encryption or decryption of communications exchanged with another child cryptographic device of the one or more child cryptographic devices. The one or more child cryptographic devices may perform encryption/decryption after separation from the parent cryptographic device.

Abstract translation: 用于执行加密和/或解密的系统可以包括父密码装置。 父加密设备可以被配置为接收第一加密密钥。 父加密设备可以被配置为基于第一加密密钥和/或内部生成的随机数据比特来确定一个或多个会话密钥。 父加密设备可以被配置为将一个或多个会话密钥插入到可操作地连接到父加密设备的一个或多个子密码设备上。 一个或多个子加密设备可以被配置为从父密码设备接收一个或多个会话密钥，并且执行与一个或多个子密码设备的另一子密码设备交换的通信的加密或解密中的一个或多个。 一个或多个子加密设备可以在与父密码设备分离之后执行加密/解密。

公开(公告)号：US20160149696A1

公开(公告)日：2016-05-26

申请号：US14295016

申请日：2014-06-03

Applicant: L-3 Communications Corporation

Inventor： Richard Norman Winslow ,  Todd David Heinrich ,  Steven Daniel Devlin ,  Frank Anthony Costantini

IPC: H04L9/06 ,  H04L9/14

CPC classification number: H04L9/0618 ,  H04L9/12 ,  H04L2209/34

Abstract: Disclosed herein are methods and systems for configuring and using one or more block ciphering techniques in order to encrypt/decrypt serial data streams while maintaining cryptographic synchronization and attempting to minimize the amount of overhead introduced into the stream. The techniques disclosed herein may be used to encrypt and decrypt serial data streams using a block cipher in a manner that can be substantially transparent to the devices involved in the serial communication session. For example, the serial user data may be left unframed by the encryption device while monitoring for opportunistic times to transmit framed cryptographic synchronization information during periods of relative inactivity in an asynchronous serial data stream. A cryptographic device implementing the techniques described herein may be configured to implement one or more of an encryption device or a decryption device.

Abstract translation: 这里公开了用于配置和使用一个或多个块加密技术以便加密/解密串行数据流同时保持加密同步并且尝试最小化引入到流中的开销的量的方法和系统。 本文公开的技术可以用于以对于串行通信会话中涉及的设备基本上透明的方式使用分组密码来加密和解密串行数据流。 例如，串行用户数据可以由加密设备保持不成帧，同时监视在异步串行数据流中的相对不活动期间发送帧加密同步信息的机会时间。 实施本文描述的技术的加密设备可以被配置为实现加密设备或解密设备中的一个或多个。