Systems and methods for providing opportunistic security for physical communication channels
    3.
    发明授权
    Systems and methods for providing opportunistic security for physical communication channels 失效
    为物理通信渠道提供机会安全的系统和方法

    公开(公告)号:US08213616B2

    公开(公告)日:2012-07-03

    申请号:US12441737

    申请日:2007-09-18

    IPC分类号: H04L9/00

    CPC分类号: H04K1/02

    摘要: Systems and methods of providing opportunistic security for physical communication channels are disclosed. One disclosed method is for opportunistic secure communication on a main channel between a sender device and a receiver device when an eavesdropper device is listening on an eavesdropper channel. This example method includes transmitting, in a first time period in which signal quality on the main channel is better than signal quality on the eavesdropper channel, symbols that are randomly selected from a set of symbols. The method also includes transmitting, in a second time period in which signal quality on the main channel is not better than signal quality on the eavesdropper channel, coding information associated with the randomly selected symbols. The method also includes reconciling the randomly selected symbols using the coding information.

    摘要翻译: 公开了为物理通信信道提供机会性安全性的系统和方法。 一种公开的方法是当窃听者设备正在窃听窃听频道时,在发送者设备和接收者设备之间的主频道上进行机会性安全通信。 该示例方法包括在主信道上的信号质量优于窃听者信道上的信号质量的第一时间段中发送从一组符号中随机选择的符号。 该方法还包括在主信道上的信号质量不比窃听者信道上的信号质量的第二时间段中发送与随机选择的符号相关联的编码信息。 该方法还包括使用编码信息来协调随机选择的符号。

    Secure Communication Using Non-Systematic Error Control Codes
    4.
    发明申请
    Secure Communication Using Non-Systematic Error Control Codes 失效
    使用非系统错误控制代码进行安全通信

    公开(公告)号:US20110246854A1

    公开(公告)日:2011-10-06

    申请号:US13123669

    申请日:2009-10-08

    IPC分类号: H03M13/05 G06F11/10

    CPC分类号: H03M13/01 H04L63/0428

    摘要: A transmitter device (110T) for secure communication includes: an encoder (170) configured to apply a non-systematic error correcting code (NS ECC) to a message, thus producing encoded bits with no clear message bits; and a transceiver (720) configured to transmit the encoded bits over a main channel to a receiver. A method for secure communication includes: encoding a message with an NS ECC to produce an encoded message carrying no message bits in the clear; and transmitting the encoded message over a main channel (120). The NS ECC characteristics result in an eavesdropper channel error probability under a security threshold (320) and a main channel error probability over a reliability threshold (310), whenever an eavesdropper (140) listening on an eavesdropper channel (150) is more than distance Z (220) from the transmitter. Unreliable bits in the encoded bits render the eavesdropper unable to reliably decode messages on the main channel.

    摘要翻译: 用于安全通信的发射机设备(110T)包括:被配置为向消息应用非系统纠错码(NS ECC)的编码器(170),从而产生不具有清除消息比特的编码比特; 以及收发器(720),其经配置以经由主信道将编码比特发送到接收机。 一种用于安全通信的方法包括:对具有NS ECC的消息进行编码以产生在清除中不携带消息比特的编码消息; 以及通过主信道(120)发送编码的消息。 每当在窃听者通道(150)上收听的窃听者(140)超过距离时,NS ECC特征导致在安全阈值(320)下的窃听者信道错误概率和可靠性阈值(310)上的主要信道错误概率 Z(220)。 编码比特中的不可靠比特会使窃听者无法可靠地解码主频道上的消息。

    Magnetic cutting board
    6.
    发明授权
    Magnetic cutting board 失效
    磁力切割板

    公开(公告)号:US07125011B2

    公开(公告)日:2006-10-24

    申请号:US10840887

    申请日:2004-05-07

    IPC分类号: B23Q3/00

    CPC分类号: A47J47/005

    摘要: One or more cutting boards that may be conveniently and compactly stored on many vertical surfaces in the kitchen, for example, a refrigerator. In the preferred embodiment, each cutting board contains two layers, a flexible magnet, and a flexible yet durable cutting surface. One or more of the magnetic cutting boards may be placed on any magnetically attractive surface, whether vertical or horizontal, and will remain in place due to the magnetic attraction between the magnetic cutting board and the magnetically attractive surface.

    摘要翻译: 一个或多个切割板可以方便和紧凑地存储在厨房的许多垂直表面上,例如冰箱。 在优选实施例中,每个切割板包含两层,柔性磁体和柔性而耐用的切割表面。 一个或多个磁性切割板可以放置在任何磁性吸引力表面上,无论是垂直还是水平的,并且由于磁性切割板和吸磁表面之间的磁吸引力而将保持在适当位置。

    Spatially resolved equalization and forward error correction for multimode fiber links
    7.
    发明授权
    Spatially resolved equalization and forward error correction for multimode fiber links 失效
    多模光纤链路的空间分辨均衡和前向纠错

    公开(公告)号:US06847760B2

    公开(公告)日:2005-01-25

    申请号:US10202277

    申请日:2002-07-24

    摘要: A system is described that includes a system for correcting modal dispersion and errors in an optical fiber system. The system includes a multisegment photodetector coupled to an end of an optical fiber for detecting optical signals exiting the optical fiber and for converting the optical signals to an electrical output, the multisegment photodetector including a plurality of photodetector regions configured such that one of the plurality of photodetectors regions intercepts a mode in a manner distinct from another of the plurality of photodetectors. The system also includes logic configured to receive a resultant signal output from the photodetector regions and provide forward error correction decoding of the resultant signal.

    摘要翻译: 描述了一种包括用于校正光纤系统中的模态色散和误差的系统的系统。 该系统包括耦合到光纤端部的多段光电检测器,用于检测离开光纤的光信号并将光信号转换成电输出,该多段光检测器包括多个光电检测器区域,其被配置为使得多个 光电检测器区域以与多个光电检测器中的另一个不同的方式截取模式。 该系统还包括被配置为接收从光电检测器区域输出的合成信号并提供所得信号的前向纠错解码的逻辑。

    Secure communication using error correction codes
    8.
    发明授权
    Secure communication using error correction codes 有权
    使用纠错码进行安全通信

    公开(公告)号:US08484545B2

    公开(公告)日:2013-07-09

    申请号:US12765966

    申请日:2010-04-23

    IPC分类号: H03M13/03

    摘要: Systems and methods for selecting a puncturing pattern for a low density parity check (LDPC) code are disclosed. One such method comprises: selecting a puncture pattern distribution for the LDPC code; calculating a security threshold and a reliability threshold for the LDPC, the LDPC having the selected puncture pattern distribution and also described by a degree distribution; storing the selected puncture pattern distribution responsive to a security gap for the LDPC being a lowest value encountered in any prior iterations; selecting another puncture pattern distribution for the LDPC code; and repeating the calculating, the storing, and the selecting another puncture pattern distribution steps.

    摘要翻译: 公开了用于选择用于低密度奇偶校验(LDPC)码的打孔模式的系统和方法。 一种这样的方法包括:选择用于LDPC码的穿孔图案分布; 计算LDPC的安全阈值和可靠性阈值,所述LDPC具有所选择的穿孔模式分布,并且还通过度分布来描述; 存储响应于所述LDPC的安全间隙的所选择的穿孔模式分布是在任何先前迭代中遇到的最低值; 选择用于LDPC码的另一穿孔图案分布; 并重复计算,存储和选择另一个穿刺图案分发步骤。

    Systems and Methods for Providing Opportunistic Security for Physical Communication Channels
    9.
    发明申请
    Systems and Methods for Providing Opportunistic Security for Physical Communication Channels 失效
    为物理通信渠道提供机会安全的系统和方法

    公开(公告)号:US20100128877A1

    公开(公告)日:2010-05-27

    申请号:US12441737

    申请日:2007-09-18

    IPC分类号: H04L9/20 H03M13/05 G06F11/10

    CPC分类号: H04K1/02

    摘要: Systems and methods of providing opportunistic security for physical communication channels are disclosed. One disclosed method is for opportunistic secure communication on a main channel between a sender device and a receiver device when an eavesdropper device is listening on an eavesdropper channel. This example method includes transmitting, in a first time period in which signal quality on the main channel is better than signal quality on the eavesdropper channel, symbols that are randomly selected from a set of symbols. The method also includes transmitting, in a second time period in which signal quality on the main channel is not better than signal quality on the eavesdropper channel, coding information associated with the randomly selected symbols. The method also includes reconciling the randomly selected symbols using the coding information.

    摘要翻译: 公开了为物理通信信道提供机会性安全性的系统和方法。 一种公开的方法是当窃听者设备正在窃听窃听频道时,在发送者设备和接收者设备之间的主频道上进行机会性安全通信。 该示例方法包括在主信道上的信号质量优于窃听者信道上的信号质量的第一时间段中发送从一组符号中随机选择的符号。 该方法还包括在主信道上的信号质量不比窃听者信道上的信号质量的第二时间段中发送与随机选择的符号相关联的编码信息。 该方法还包括使用编码信息来协调随机选择的符号。