Method for Identifying Sub-Sequences of Interest in a Sequence
    21.
    发明申请
    Method for Identifying Sub-Sequences of Interest in a Sequence 有权
    识别序列中的兴趣序列的方法

    公开(公告)号:US20080270439A1

    公开(公告)日:2008-10-30

    申请号:US12043609

    申请日:2008-03-06

    IPC分类号: G06F17/30

    CPC分类号: G06F19/22

    摘要: The present technique provides for the analysis of a data series to identify sequences of interest within the series. The analysis may be used to iteratively update a grammar used to analyze the data series or updated versions of the data series. Furthermore, the technique provides for the calculation of a minimum description length heuristic, such as a symbol compression ratio, for each sub-sequence of the analyzed data sequence. The technique may then compare a selected heuristic value against one or more reference conditions to determine if additional iteration is to be performed. The grammar and the data sequence may be updated between iterations to include a symbol representing a string corresponding to the selected heuristic value based upon a non-termination result of the comparison. Alternatively, the string corresponding to the selected heuristic value may be identified as a sequence of interest based upon a termination result of the comparison.

    摘要翻译: 本技术提供数据序列的分析以识别该系列内的感兴趣序列。 该分析可用于迭代地更新用于分析数据系列或数据系列的更新版本的语法。 此外,该技术提供了对分析数据序列的每个子序列的最小描述长度启发式(例如符号压缩比)的计算。 然后,技术可以将所选择的启发式值与一个或多个参考条件进行比较,以确定是否要执行附加迭代。 可以在迭代之间更新语法和数据序列,以基于比较的非终止结果来包括表示对应于所选择的启发式值的字符串的符号。 或者,可以基于比较的终止结果将对应于所选择的启发式值的字符串识别为感兴趣的序列。

    Method and system for intrusion detection in networked control systems
    23.
    发明授权
    Method and system for intrusion detection in networked control systems 有权
    网络控制系统入侵检测方法与系统

    公开(公告)号:US08981895B2

    公开(公告)日:2015-03-17

    申请号:US13346194

    申请日:2012-01-09

    CPC分类号: H04L63/1416

    摘要: A method and system for detection of intrusion in networked control systems, is provided. The method includes generating an operating model of a system being controlled. The operating model of the system comprises a relationship between a plurality of components in the system defined by a plurality of parameters. Further, the method includes calculating an estimated value of at least one parameter for at least one component in the system. The operating model is used to calculate the estimated value of the at least one parameter. Furthermore, the method includes measuring a latest value of at least one parameter at a predefined interval. The method also includes triggering an alert for intrusion for the at least one component based on an analysis of at least one of the latest value and the estimated value of at least one parameter.

    摘要翻译: 提供了一种用于检测网络控制系统中入侵的方法和系统。 该方法包括生成被控制的系统的操作模型。 系统的操作模型包括由多个参数定义的系统中的多个组件之间的关系。 此外,该方法包括计算系统中至少一个组件的至少一个参数的估计值。 操作模型用于计算至少一个参数的估计值。 此外,该方法包括以预定间隔测量至少一个参数的最新值。 该方法还包括基于对至少一个参数的最新值和估计值中的至少一个的分析来触发针对至少一个组件的入侵的警报。

    SYSTEM AND METHOD FOR AUTOMATED FAULT CONTROL AND RESTORATION OF SMART GRIDS
    24.
    发明申请
    SYSTEM AND METHOD FOR AUTOMATED FAULT CONTROL AND RESTORATION OF SMART GRIDS 审中-公开
    用于自动故障控制和智能网络恢复的系统和方法

    公开(公告)号:US20130003238A1

    公开(公告)日:2013-01-03

    申请号:US13173651

    申请日:2011-06-30

    IPC分类号: H02H7/00

    摘要: A self-organizing protection coordination system within a power network is provided. The self-organizing protection coordination system in the power network includes a plurality of distribution devices communicatively coupled to each other in a power network. The power network also includes a protection device coupled to each of the plurality of distribution devices configured to transmit power in the distribution network. The power network further includes a controller coupled to each of the plurality of distribution devices. The controller receives communication channel characteristics from a plurality of distribution devices in a distribution network at an interval of time. The controller also computes a delay in time for receiving the communication characteristics. The controller further determines a plurality of reliability indicators at each of the plurality of distribution devices. The controller adjusts tripping characteristics of the plurality of distribution devices to minimize the reliability indicators based on the computed delay.

    摘要翻译: 提供电力网络内的自组织保护协调系统。 电力网络中的自组织保护协调系统包括在电力网络中彼此通信耦合的多个分配设备。 电力网络还包括耦合到被配置为在分配网络中发送功率的多个分配设备中的每一个的保护设备。 电力网络还包括耦合到多个分配装置中的每一个的控制器。 控制器以一定的时间间隔从分发网络中的多个分发设备接收通信信道特性。 控制器还计算接收通信特性的时间延迟。 控制器进一步确定多个分配装置中的每一个处的多个可靠性指示器。 控制器调整多个分配装置的跳闸特性,以便根据所计算的延迟来最小化可靠性指标。

    Method for identifying sub-sequences of interest in a sequence
    25.
    发明授权
    Method for identifying sub-sequences of interest in a sequence 有权
    识别序列中感兴趣的亚序列的方法

    公开(公告)号:US08046173B2

    公开(公告)日:2011-10-25

    申请号:US12043609

    申请日:2008-03-06

    IPC分类号: G06F19/00

    CPC分类号: G06F19/22

    摘要: The present technique provides for the analysis of a data series to identify sequences of interest within the series. The analysis may be used to iteratively update a grammar used to analyze the data series or updated versions of the data series. Furthermore, the technique provides for the calculation of a minimum description length heuristic, such as a symbol compression ratio, for each sub-sequence of the analyzed data sequence. The technique may then compare a selected heuristic value against one or more reference conditions to determine if additional iteration is to be performed. The grammar and the data sequence may be updated between iterations to include a symbol representing a string corresponding to the selected heuristic value based upon a non-termination result of the comparison. Alternatively, the string corresponding to the selected heuristic value may be identified as a sequence of interest based upon a termination result of the comparison.

    摘要翻译: 本技术提供数据序列的分析以识别该系列内的感兴趣序列。 该分析可用于迭代地更新用于分析数据系列或数据系列的更新版本的语法。 此外,该技术提供了对分析数据序列的每个子序列的最小描述长度启发式计算,例如符号压缩比。 然后,技术可以将所选择的启发式值与一个或多个参考条件进行比较,以确定是否要执行附加迭代。 可以在迭代之间更新语法和数据序列,以基于比较的非终止结果来包括表示对应于所选择的启发式值的字符串的符号。 或者,可以基于比较的终止结果将对应于所选择的启发式值的字符串识别为感兴趣的序列。

    Flood attack projection model
    26.
    发明授权
    Flood attack projection model 有权
    洪水攻击投影模型

    公开(公告)号:US07620985B1

    公开(公告)日:2009-11-17

    申请号:US10965248

    申请日:2004-10-14

    IPC分类号: G06F11/00

    CPC分类号: H04L63/1433

    摘要: A flood attack of an information system is simulated by injecting an algorithmically compressed flood attack model into the information system to assess the effect of the attack upon the system. The flood attack model propagates from node to node throughout the system by way of virtual messages that time-project the flood attack model and do not disrupt system operation while the simulated flood attack is taking place. Programs of executable code installed on nodes of the information system generate and send the virtual messages describing the flood attack.

    摘要翻译: 通过将一个算法压缩的洪水攻击模型注入信息系统来模拟信息系统的洪水攻击,以评估攻击对系统的影响。 洪水攻击模型通过虚拟消息在整个系统中从节点传播到节点,该虚拟消息可以对洪水攻击模型进行投射,并且在发生模拟洪水攻击时不会中断系统操作。 安装在信息系统节点上的可执行代码程序生成并发送描述洪水攻击的虚拟消息。

    Dialog processing method and apparatus for uninhabited air vehicles
    27.
    发明授权
    Dialog processing method and apparatus for uninhabited air vehicles 有权
    无人机的对话处理方法和装置

    公开(公告)号:US07174300B2

    公开(公告)日:2007-02-06

    申请号:US10015025

    申请日:2001-12-11

    IPC分类号: G10L15/00

    CPC分类号: G10L15/22

    摘要: A dialog processing method and apparatus for uninhabited air vehicles is described. The apparatus contains a recognition unit for recognizing incoming data, an interpretation unit for interpreting the data according to a grammar and a response unit for generating an appropriate response to the incoming data. The method may utilize natural language processes and may reduce to a finite state machine. The incoming data is combined with uninhabited air vehicle state information to increase the accuracy of this interpretation. Additionally, the dialog states may be limited to customary air traffic control dialogs.

    摘要翻译: 描述了一种无人驾驶飞行器的对话处理方法和装置。 该装置包括用于识别输入数据的识别单元,用于根据语法解释数据的解释单元和用于生成对输入数据的适当响应的响应单元。 该方法可以利用自然语言过程并且可以减少到有限状态机。 输入数据与无人机动车状态信息相结合,以提高此解释的准确性。 此外,对话状态可能限于常规空中交通管制对话。

    Active networking in communication satellites
    28.
    发明授权
    Active networking in communication satellites 失效
    通信卫星主动联网

    公开(公告)号:US07113493B1

    公开(公告)日:2006-09-26

    申请号:US09584955

    申请日:2000-06-02

    摘要: A communications network comprises a plurality of nodes including at least one earth station and at least one spacecraft. The spacecraft node is an active node of the network. A method for dynamically configuring a spacecraft to function as a node of a communications network in accordance with the defacto active network reference and with an Open Systems Interconnect (OSI) reference model comprises the step of transmitting an object from an earth station to the spacecraft. The object comprises at least one method for configuring the spacecraft to include a node operating system (nodeOS) and at least one execution environment (EE).

    摘要翻译: 通信网络包括多个节点,包括至少一个地球站和至少一个航天器。 航天器节点是网络的主动节点。 一种用于动态地配置航天器的方法,其用于根据所述定位主动网络参考和开放系统互连(OSI)参考模型作为通信网络的节点,包括将对象从地球站发射到所述航天器的步骤。 该对象包括用于配置航天器以包括节点操作系统(nodeOS)和至少一个执行环境(EE)的至少一种方法。

    Optimistic distributed simulation for a UAV flight control system
    29.
    发明授权
    Optimistic distributed simulation for a UAV flight control system 失效
    无人机飞行控制系统的乐观分布式仿真

    公开(公告)号:US06498968B1

    公开(公告)日:2002-12-24

    申请号:US09994448

    申请日:2001-11-27

    IPC分类号: G06F700

    CPC分类号: G05B13/048

    摘要: A real-time distributed model-based predictive control method having a time maintenance mechanism that solves all state synchronization problems. Method steps include generating a message that predicts a system value corresponding to a future time, and executing a control process using the system value contained within said message, resulting in a process state. The process state is then stored in a state queue. The local process time is rolled back to the latest valid local process time prior to said message if the message precedes the current process state time. Rolling back comprises retrieving the system state values at that latest valid local process time from said state queue and re-executing the control process, using the system value contained within the message, and storing the new state in the state queue. The method also includes rolling back if, upon receiving a message containing an observed system value, said observed system value differs from its predicted value by more than a predetermined tolerance. The method is carried out on a distributed processor control system.

    摘要翻译: 一种实时分布式模型预测控制方法,具有解决所有状态同步问题的时间维护机制。 方法步骤包括生成预测对应于未来时间的系统值的消息,以及使用包含在所述消息内的系统值来执行控制处理,从而产生处理状态。 然后将进程状态存储在状态队列中。 如果消息在当前进程状态时间之前,则本地进程时间将在所述消息之前回滚到最新的有效本地进程时间。 回滚包括从所述状态队列检索在该最新的有效本地进程时间的系统状态值,并使用包含在消息内的系统值重新执行控制进程,并将新状态存储在状态队列中。 该方法还包括回滚,如果在接收到包含观察到的系统值的消息时,所述观察到的系统值与其预测值不同超过预定公差。 该方法在分布式处理器控制系统上进行。