公开(公告)号：US20110148647A1

公开(公告)日：2011-06-23

申请号：US12645023

申请日：2009-12-22

申请人： Robert R. Miller, II ,  Edward G. Amoroso ,  Susan R. Bailey ,  Lusheng Ji ,  Harry R. Worstell ,  David M. Britz

发明人： Robert R. Miller, II ,  Edward G. Amoroso ,  Susan R. Bailey ,  Lusheng Ji ,  Harry R. Worstell ,  David M. Britz

IPC分类号： G08B21/00 ,  E02D29/14 ,  H04N7/18

CPC分类号： G08B13/1672 ,  E02D29/14 ,  E02D29/1481 ,  G08B13/19697

摘要： A security device for detecting the position of a manhole cover includes a pinger device, such as an acoustic pinger, that transmits a signal in the direction of the expected position of the manhole cover. The device takes energy samples to determine if the signal has been reflected back by the manhole cover. If the device determines the signal has not been reflected, it determines that the manhole cover has been moved from the expected position. In response, the device captures an image of an area around the expected position of the manhole cover. In addition, the device can notify a remote security station via a network that the manhole cover has been moved.

摘要翻译： 用于检测人孔盖的位置的安全装置包括在井眼盖的预期位置的方向上发送信号的呼吸器装置，例如声孔。 该装置采用能量样本来确定信号是否已被人孔盖反射回来。 如果设备确定信号未被反映，则确定人孔盖已从预期位置移动。 作为响应，设备捕获围绕人孔盖的预期位置的区域的图像。 此外，设备可以经由网络通知远程安全站人造井盖被移动。

公开(公告)号：US08368552B2

公开(公告)日：2013-02-05

申请号：US12645023

申请日：2009-12-22

申请人： Robert R. Miller, II ,  Edward G. Amoroso ,  Susan R. Bailey ,  Lusheng Ji ,  Harry R. Worstell ,  David M. Britz

发明人： Robert R. Miller, II ,  Edward G. Amoroso ,  Susan R. Bailey ,  Lusheng Ji ,  Harry R. Worstell ,  David M. Britz

IPC分类号： G08B21/00 ,  E02D29/14

CPC分类号： G08B13/1672 ,  E02D29/14 ,  E02D29/1481 ,  G08B13/19697

摘要： A security device for detecting the position of a manhole cover includes a pinger device, such as an acoustic pinger, that transmits a signal in the direction of the expected position of the manhole cover. The device takes energy samples to determine if the signal has been reflected back by the manhole cover. If the device determines the signal has not been reflected, it determines that the manhole cover has been moved from the expected position. In response, the device captures an image of an area around the expected position of the manhole cover. In addition, the device can notify a remote security station via a network that the manhole cover has been moved.

公开(公告)号：US08385345B2

公开(公告)日：2013-02-26

申请号：US11901766

申请日：2007-09-19

申请人： Lusheng Ji ,  David M. Britz

发明人： Lusheng Ji ,  David M. Britz

IPC分类号： H04L12/56

CPC分类号： H04W40/12 ,  H04H60/56 ,  H04L1/004 ,  H04L29/08459 ,  H04L45/00 ,  H04L45/128 ,  H04L45/20 ,  H04L45/24 ,  H04L45/26 ,  H04L45/42 ,  H04L45/64 ,  H04L45/74 ,  H04L47/286 ,  H04L47/801 ,  H04L49/208 ,  H04L51/12 ,  H04W8/005 ,  H04W28/04 ,  H04W28/065 ,  H04W40/02 ,  H04W40/04 ,  H04W84/18

摘要： A system and method are disclosed for forwarding data in hybrid wireless mesh networks. The method includes configuring a number of mesh network nodes as Potential Relay Nodes (PRNs) in an overlay network associated with a hybrid wireless mesh network, streaming data packets from a source node to a destination node using a native data forwarding algorithm of the hybrid wireless mesh network, dynamically identifying Relay Nodes (RNs) among PRNs in the overlay network, creating secondary paths for sending data packets towards selected RNs in the overlay network, and relaying data packets from RNs to the destination node using the overlay network.

公开(公告)号：US20090073921A1

公开(公告)日：2009-03-19

申请号：US11901766

申请日：2007-09-19

申请人： Lusheng Ji ,  David M. Britz

发明人： Lusheng Ji ,  David M. Britz

IPC分类号： H04Q7/00

CPC分类号： H04W40/12 ,  H04H60/56 ,  H04L1/004 ,  H04L29/08459 ,  H04L45/00 ,  H04L45/128 ,  H04L45/20 ,  H04L45/24 ,  H04L45/26 ,  H04L45/42 ,  H04L45/64 ,  H04L45/74 ,  H04L47/286 ,  H04L47/801 ,  H04L49/208 ,  H04L51/12 ,  H04W8/005 ,  H04W28/04 ,  H04W28/065 ,  H04W40/02 ,  H04W40/04 ,  H04W84/18

摘要： A system and method are disclosed for forwarding data in hybrid wireless mesh networks. The method includes configuring a number of mesh network nodes as Potential Relay Nodes (PRNs) in an overlay network associated with a hybrid wireless mesh network, streaming data packets from a source node to a destination node using a native data forwarding algorithm of the hybrid wireless mesh network, dynamically identifying Relay Nodes (RNs) among PRNs in the overlay network, creating secondary paths for sending data packets towards selected RNs in the overlay network, and relaying data packets from RNs to the destination node using the overlay network.

摘要翻译： 公开了用于在混合无线网状网络中转发数据的系统和方法。 该方法包括将多个网状网络节点配置为与混合无线网状网络相关联的覆盖网络中的潜在中继节点（PRN），使用混合无线网络的本机数据转发算法将数据分组从源节点传输到目的地节点 网络网络，动态地识别覆盖网络中的PRN之间的中继节点（RN），创建用于向覆盖网络中的所选RN发送数据分组的辅助路径，以及使用覆盖网络将数据分组从RN中继到目的地节点。

公开(公告)号：USD327479S

公开(公告)日：1992-06-30

申请号：US593940

申请日：1990-10-01

申请人： David M. Britz

设计人： David M. Britz

公开(公告)号：US08767958B2

公开(公告)日：2014-07-01

申请号：US13602218

申请日：2012-09-03

申请人： David M. Britz ,  Robert Raymond Miller, II ,  Nemmara K. Shankaranarayanan

发明人： David M. Britz ,  Robert Raymond Miller, II ,  Nemmara K. Shankaranarayanan

IPC分类号： H04K1/10

CPC分类号： H04B10/85 ,  H04B10/11 ,  H04K1/003 ,  H04K1/02 ,  H04K1/10 ,  H04L63/0428 ,  H04L2209/80 ,  H04Q11/0003

摘要： A secure, open-air communication system utilizes a plurality of “decoy” data signals to hide one or more true data signals. The true data signal(s) are channel hopped with the plurality of decoy data signals to form a multi-channel “scrambled” output signal that is thereafter transmitted in an open-air communication system. The greater the number of decoy signals, the greater the security provided to the open-air system. Further security may be provided by encrypting both the true and decoy signals prior to scrambling and/or by utilizing a spatially diverse set of transmitters and receivers. Without the knowledge of the channel assignment(s) for the true signal(s), an eavesdropper may be able to intercept (and, with time, perhaps descramble) the open-air transmitted signals, will not be able to distinguish the true data from the decoys without also knowing the channel assignment(s).

摘要翻译： 安全的露天通信系统利用多个“诱饵”数据信号来隐藏一个或多个真实数据信号。 真数据信号与多个诱饵数据信号进行信道跳频，以形成随后在露天通信系统中发送的多信道“加扰”输出信号。 诱饵信号的数量越多，对露天系统的安全性就越大。 可以通过在加扰之前加密真实信号和诱饵信号和/或通过利用空间不同的发射器和接收器组来提供进一步的安全性。 窃听者无需知道真实信号的信道分配，就可以拦截（并且随着时间的推移，或许解扰）露天传输的信号，将无法区分真实数据 从诱饵而不知道频道分配。

公开(公告)号：US20110033044A1

公开(公告)日：2011-02-10

申请号：US12907417

申请日：2010-10-19

申请人： David M. Britz ,  Robert Raymond Miller, II ,  Nemmara K. Shankaranarayanan

发明人： David M. Britz ,  Robert Raymond Miller, II ,  Nemmara K. Shankaranarayanan

IPC分类号： H04K1/10

CPC分类号： H04B10/85 ,  H04B10/11 ,  H04K1/003 ,  H04K1/02 ,  H04K1/10 ,  H04L63/0428 ,  H04L2209/80 ,  H04Q11/0003

摘要： A secure, open-air communication system utilizes a plurality of “decoy” data signals to hide one or more true data signals. The true data signal(s) are channel hopped with the plurality of decoy data signals to form a multi-channel “scrambled” output signal that is thereafter transmitted in an open-air communication system. The greater the number of decoy signals, the greater the security provided to the open-air system. Further security may be provided by encrypting both the true and decoy signals prior to scrambling and/or by utilizing a spatially diverse set of transmitters and receivers. Without the knowledge of the channel assignment(s) for the true signal(s), an eavesdropper may be able to intercept (and, with time, perhaps descramble) the open-air transmitted signals, will not be able to distinguish the true data from the decoys without also knowing the channel assignment(s).

摘要翻译： 安全的露天通信系统利用多个“诱饵”数据信号来隐藏一个或多个真实数据信号。 真数据信号与多个诱饵数据信号进行信道跳频，以形成随后在露天通信系统中发送的多信道“加扰”输出信号。 诱饵信号的数量越多，对露天系统的安全性就越大。 可以通过在加扰之前加密真实信号和诱饵信号和/或通过利用空间不同的发射器和接收器组来提供进一步的安全性。 窃听者无需知道真实信号的信道分配，就可以拦截（并且随着时间的推移，或许解扰）露天传输的信号，将无法区分真实数据 从诱饵而不知道频道分配。

公开(公告)号：US20130010951A1

公开(公告)日：2013-01-10

申请号：US13602218

申请日：2012-09-03

申请人： David M. Britz ,  Robert Raymond Miller, II ,  Nemmara K. Shankaranarayanan

发明人： David M. Britz ,  Robert Raymond Miller, II ,  Nemmara K. Shankaranarayanan

IPC分类号： H04K1/10

CPC分类号： H04B10/85 ,  H04B10/11 ,  H04K1/003 ,  H04K1/02 ,  H04K1/10 ,  H04L63/0428 ,  H04L2209/80 ,  H04Q11/0003

摘要： A secure, open-air communication system utilizes a plurality of “decoy” data signals to hide one or more true data signals. The true data signal(s) are channel hopped with the plurality of decoy data signals to form a multi-channel “scrambled” output signal that is thereafter transmitted in an open-air communication system. The greater the number of decoy signals, the greater the security provided to the open-air system. Further security may be provided by encrypting both the true and decoy signals prior to scrambling and/or by utilizing a spatially diverse set of transmitters and receivers. Without the knowledge of the channel assignment(s) for the true signal(s), an eavesdropper may be able to intercept (and, with time, perhaps descramble) the open-air transmitted signals, will not be able to distinguish the true data from the decoys without also knowing the channel assignment(s).

摘要翻译： 安全的露天通信系统利用多个诱饵数据信号来隐藏一个或多个真实数据信号。 真数据信号与多个诱饵数据信号进行信道跳频，以形成多路加扰输出信号，此后在露天通信系统中传输。 诱饵信号的数量越多，对露天系统的安全性就越大。 可以通过在加扰之前加密真实信号和诱饵信号和/或通过利用空间不同的发射器和接收器组来提供进一步的安全性。 窃听者无需知道真实信号的信道分配，就可以拦截（并且随着时间的推移，或许解扰）露天传输的信号，将无法区分真实数据 从诱饵而不知道频道分配。

公开(公告)号：US06983109B1

公开(公告)日：2006-01-03

申请号：US09981240

申请日：2001-10-18

申请人： David M. Britz ,  Matthew J. Sherman ,  Jeevan P. Dodley

发明人： David M. Britz ,  Matthew J. Sherman ,  Jeevan P. Dodley

IPC分类号： H04J14/00

CPC分类号： H04J14/0227 ,  H04J14/0228 ,  H04J14/0241 ,  H04J14/0283 ,  H04J14/0284 ,  H04J14/0286 ,  H04Q11/0067 ,  H04Q2011/0026

摘要： A method for facilitating wavelength-specific and packet-switched routing comprises the steps of demultiplexing wavelengths propagating on a primary metropolitan fiber ring, determining a destination address for the wavelength, accessing a look-up table, determining if the destination address matches a local address contained in the look-up table and switching the wavelength based on a result of the determining step. A method for providing local metropolitan switching and routing and broadband local access distribution described in terms of the functions of the layers comprises the steps of interfacing with a primary fiber metropolitan ring and a local customer primary distribution/aggregation node via transport bran ches of a mesh architecture, routing specific wavelengths and newly assigned wavelengths to and from a customer's premises and handling customer specific wavelength and packet routing via one of fiber, millimeter wave radio and free space optical communications.

摘要翻译： 用于促进波长特定和分组交换路由的方法包括以下步骤：解复用在主要大都市光纤环上传播的波长，确定波长的目的地地址，访问查找表，确定目的地址是否匹配本地地址 包含在查找表中并且基于确定步骤的结果来切换波长。 根据层的功能提供本地大都市交换和路由以及宽带本地访问分配的方法包括以下步骤：通过网格的传输层与主要的大都市环和本地客户主分配/汇聚节点进行接口 架构，将特定波长和新分配的波长路由到客户的场所，并通过光纤，毫米波无线电和自由空间光通信中的一个处理客户特定的波长和分组路由。

公开(公告)号：US06856741B2

公开(公告)日：2005-02-15

申请号：US10833851

申请日：2004-04-28

申请人： David M. Britz

发明人： David M. Britz

IPC分类号： G02B6/32 ,  G02B6/34 ,  H04B10/10 ,  G02B6/00 ,  G02B6/36

CPC分类号： G02B6/2938 ,  G02B6/32 ,  H04B10/1125

摘要： A free space wavelength duplexed system includes first and second terminals. The first terminal includes an optical transmitter and an optical receiver. The optical receiver has a telescope, an optical to electrical converter and an optical amplifier coupled between the telescope and the optical to electrical converter. A method includes the steps of receiving a received optical signal through a telescope, diverting the received optical signal in an optical splitter into an optical amplifier, and transmitting a transmit optical signal through the optical splitter to the telescope. Another method includes the steps of receiving plural received optical signals through a telescope, diverting the plural received optical signals in an optical splitter into an optical amplifier, separating the plural amplified optical signals by wavelength, and transmitting plural transmit optical signals at distinct wavelengths through the optical splitter to the telescope.

摘要翻译： 自由空间波长双工系统包括第一和第二终端。 第一终端包括光发射机和光接收机。 光接收器具有望远镜，光电转换器和耦合在望远镜与光电转换器之间的光放大器。 一种方法包括以下步骤：通过望远镜接收接收到的光信号，将接收到的光分路器中的光信号转换成光放大器，并将发射光信号通过光分路器发射到望远镜。 另一种方法包括以下步骤：通过望远镜接收多个接收到的光信号，将光分路器中的多个接收光信号转换成光放大器，通过波长分离多个放大的光信号，并通过该波长透过不同波长的多个发射光信号 光分路器到望远镜。