Systems and methods for accessing and updating distributed data
    51.
    发明授权
    Systems and methods for accessing and updating distributed data 有权
    用于访问和更新分布式数据的系统和方法

    公开(公告)号:US08176013B2

    公开(公告)日:2012-05-08

    申请号:US12965748

    申请日:2010-12-10

    IPC分类号: G06F7/00 G06F17/30

    摘要: Systems and methods are disclosed that provide an indexing data structure. In one embodiment, the indexing data structure is mirrored index tree where the copies of the nodes of the tree are stored across devices in a distributed system. In one embodiment, nodes that are stored on an offline device are restored, and an offline device that comes back online is merged into the distributed system and given access to the current indexing data structure. In one embodiment, the indexing data structure is traversed to locate and restore nodes that are stored on offline devices of the distributed system.

    摘要翻译: 公开了提供索引数据结构的系统和方法。 在一个实施例中,索引数据结构是镜像索引树,其中树的节点的副本被存储在分布式系统中的设备之间。 在一个实施例中,恢复存储在脱机设备上的节点,并且返回在线的离线设备被合并到分布式系统中并且允许对当前索引数据结构的访问。 在一个实施例中,遍历索引数据结构以定位和恢复存储在分布式系统的离线设备上的节点。

    Passive System for Recovering Cryptography Keys
    52.
    发明申请
    Passive System for Recovering Cryptography Keys 失效
    用于恢复加密密钥的被动系统

    公开(公告)号:US20110150211A1

    公开(公告)日:2011-06-23

    申请号:US12645123

    申请日:2009-12-22

    IPC分类号: H04K1/00

    CPC分类号: H04L63/30 H04W12/02 H04W12/04

    摘要: Modern cellular wireless communications providers strive to keep their network and subscribers secure through various means. The identity of the subscriber may be obfuscated through the use of a temporary identifier for most network transactions including signaling events, voice calls, SMS messages and data sessions. A subscriber's unique identity may only be transmitted over the air in an encrypted form. Similarly, the content of voice calls, SMS messages and data sessions may also be encrypted when transmitted over the air and even when transferred over internal network interfaces. However, the use of encryption presents significant challenges for law enforcement communities when court ordered lawful intercept is required to monitor and locate subscribers utilizing the wireless networks for illegal and/or terrorist purposes. A technique to aid in the determination of a subscriber's unique wireless identity and the decryption of encrypted signals would be very useful for lawful intercept. In this document we describe an architecture and technique to aid in the decryption of encrypted wireless signals for lawful intercept by determining the current encryption key. It may also be used to decrypt encrypted signals on internal interfaces of the wireless and wireline networks.

    摘要翻译: 现代蜂窝无线通信提供商努力通过各种方式保持网络和用户的安全。 可以通过对大多数网络事务使用临时标识符来混淆订户的身份,包括信令事件,语音呼叫,SMS消息和数据会话。 用户的唯一身份只能以加密形式通过空中传输。 类似地,即使在通过内部网络接口传输时,语音呼叫,SMS消息和数据会话的内容也可以通过空中传输进行加密。 然而,当法院命令合法拦截需要监视和定位利用无线网络进行非法和/或恐怖活动的用户时,加密使用对执法团体来说是一个重大的挑战。 一种帮助确定用户唯一无线身份和加密信号解密的技术对于合法拦截将是非常有用的。 在本文中,我们描述了一种通过确定当前加密密钥来帮助解密加密无线信号以进行合法拦截的架构和技术。 它也可以用于解密无线和有线网络的内部接口上的加密信号。

    Variable coherence integration for the location of weak signals
    53.
    发明授权
    Variable coherence integration for the location of weak signals 有权
    弱信号位置的可变相干一体化

    公开(公告)号:US07924224B2

    公开(公告)日:2011-04-12

    申请号:US12192842

    申请日:2008-08-15

    摘要: In a network-based Wireless Location System (WLS), geographically distributed Location Measurement Units (LMUs) must be able to detect and use reverse channel (mobile to network) signals across multiple BTS coverage areas. By using Matched Replica correlation processing with the local and reference signals subdivided into discrete segments prior to correlation, the effects of mobile clock drift and Doppler shifts can be mitigated allowing for increased processing gain.

    摘要翻译: 在基于网络的无线定位系统(WLS)中,地理分布的位置测量单元(LMU)必须能够跨多个BTS覆盖区域检测和使用反向信道(移动​​到网络)信号。 通过使用匹配副本相关处理与在相关之前被分成离散段的本地参考信号和参考信号,可以减轻移动时钟漂移和多普勒频移的影响,从而允许增加的处理增益。

    Controlling motion using a human machine interface
    54.
    发明授权
    Controlling motion using a human machine interface 有权
    使用人机界面控制运动

    公开(公告)号:US07802193B1

    公开(公告)日:2010-09-21

    申请号:US11758139

    申请日:2007-06-05

    IPC分类号: G06F3/048

    摘要: Machine motion is directed using a graphical interface by establishing an icon in an image, displaying the icon in images having perspectives such that the icon is rendered in a corresponding relative position in the second images and moving the icons in the second images when the icon is moved in the first image, the movement being constrained along a line projected from a camera point associated with the first image and a target destination. Actions are defined using the icon and a set of action descriptors. The dominant motion space is constrained to a spherical coordinate frame centered on a vision locus and machine motions are mapped to coincide therewith based on a graphical interface view.

    摘要翻译: 使用图形界面通过在图像中建立图标来指导机器运动,在具有透视图的图像中显示图标,使得图标被渲染在第二图像中的对应的相对位置,并且当图标是图标时,移动第二图像中的图标 在第一图像中移动,运动沿着从与第一图像和目标目的地相关联的相机点投影的线被约束。 使用图标和一组动作描述符定义操作。 主要运动空间被限制为以视觉轨迹为中心的球面坐标系,并且基于图形界面视图将机器运动映射成与其一致。

    System for automatically determining cell transmitter parameters to facilitate the location of wireless devices
    55.
    发明授权
    System for automatically determining cell transmitter parameters to facilitate the location of wireless devices 有权
    用于自动确定小区发射机参数的系统,以便于无线设备的位置

    公开(公告)号:US07797000B2

    公开(公告)日:2010-09-14

    申请号:US11607420

    申请日:2006-12-01

    IPC分类号: H04M11/04 H04W24/00

    摘要: Several techniques for locating wireless devices involve the Mobile Stations (MS) making measurements of the signals transmitted by geographically distributed base stations within a wireless network. If some key site information is known about these transmitters, such as the transmitter location, transmit signal power, signal propagation, and transmit signal timing, measurements of these transmit signals by a MS can be used to determine the position of the MS. An automatic method to detect transmitters, identify key transmitter information, and utilize the base station transmit signals to perform location is presented. In addition, this method facilitates the use of cell site transmit signals that are part of multiple wireless networks.

    摘要翻译: 用于定位无线设备的几种技术涉及移动站(MS),以对无线网络内的地理分布式基站发送的信号进行测量。 如果关于这些发射机的一些关键站点信息,例如发射机位置,发射信号功率,信号传播和发射信号定时,则可以使用MS对这些发射信号的测量来确定MS的位置。 提出了一种检测发射机,识别关键发射机信息以及利用基站发射信号执行定位的自动方法。 此外,该方法有助于使用作为多个无线网络一部分的小区站点发射信号。

    Systems and methods for a snapshot of data
    56.
    发明授权
    Systems and methods for a snapshot of data 有权
    数据快照的系统和方法

    公开(公告)号:US07680842B2

    公开(公告)日:2010-03-16

    申请号:US11506591

    申请日:2006-08-18

    摘要: In one embodiment, a user or client device is connected to a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories. In one embodiment, the metadata comprises mini-snapshots for directories representing a path from the root of the file system to the root of the snapshot. The mini-snapshots serve as stand-ins for portions of the file system which are not included in the snapshot, but which permit access to the snapshot data in an intuitive way.

    摘要翻译: 在一个实施例中,用户或客户端设备连接到由一个或多个物理节点组成的分布式文件系统。 每个物理节点上的数据存储有关文件系统内的文件和目录的元数据。 一些实施例允许用户拍摄存储在文件系统上的数据的快照。 快照可以包括单个文件,单个目录,目录内的多个文件,多个目录,文件系统上包括嵌套文件和子目录的路径,或者文件系统上的多于一个路径,每个路径包括 嵌套文件和目录。 在一个实施例中,元数据包括用于表示从文件系统的根到快照的根的路径的目录的小型快照。 微型快照作为文件系统中未包含在快照中的部分的备用,但允许以直观的方式访问快照数据。

    Variable Coherence Integration for the Location of Weak Signals
    57.
    发明申请
    Variable Coherence Integration for the Location of Weak Signals 有权
    弱信号位置的可变一致性整合

    公开(公告)号:US20100039326A1

    公开(公告)日:2010-02-18

    申请号:US12192842

    申请日:2008-08-15

    IPC分类号: G01S3/02

    摘要: In a network-based Wireless Location System (WLS), geographically distributed Location Measurement Units (LMUs) must be able to detect and use reverse channel (mobile to network) signals across multiple BTS coverage areas. By using Matched Replica correlation processing with the local and reference signals subdivided into discrete segments prior to correlation, the effects of mobile clock drift and Doppler shifts can be mitigated allowing for increased processing gain.

    摘要翻译: 在基于网络的无线定位系统(WLS)中,地理分布的位置测量单元(LMU)必须能够跨多个BTS覆盖区域检测和使用反向信道(移动​​到网络)信号。 通过使用匹配副本相关处理与在相关之前被分成离散段的本地参考信号和参考信号,可以减轻移动时钟漂移和多普勒频移的影响,从而允许增加的处理增益。

    TDOA/GPS Hybrid Wireless Location System
    59.
    发明申请
    TDOA/GPS Hybrid Wireless Location System 有权
    TDOA / GPS混合无线定位系统

    公开(公告)号:US20080248811A1

    公开(公告)日:2008-10-09

    申请号:US12141029

    申请日:2008-06-17

    IPC分类号: H04Q7/20

    摘要: A method and system for enhancing the accuracy and robustness of locations determined for a mobile wireless transceiver in a cellular telephone communications system integrating location-related information both from an assisted GPS device embedded in the mobile unit and from infrastructure-based facilities that extract signal characteristic data at networked base stations. Available supporting collateral information may be additionally evaluated in the location determinations to provide location estimates of enhanced robustness and accuracy.

    摘要翻译: 一种用于增强在嵌入在移动单元中的辅助GPS设备和从提取信号特征的基于设施的设备集成位置相关信息的蜂窝电话通信系统中为移动无线收发器确定的位置的准确度和鲁棒性的方法和系统 联网基站的数据。 可以在位置确定中另外评估可用的支持附属信息,以提供增强的鲁棒性和准确性的位置估计。