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    • 11. 发明授权
    • Policy application across multiple nodes
    • 跨多个节点的策略应用
    • US07496649B2
    • 2009-02-24
    • US10783554
    • 2004-02-20
    • Alfred Lee, IVDavid LevinErik B. ChristensenSara Wong
    • Alfred Lee, IVDavid LevinErik B. ChristensenSara Wong
    • G06F15/173
    • H04L67/2819H04L67/2823H04L69/329
    • A method includes retrieving an intermediate node policy characterizing communication properties supported by an intermediate node, the intermediate node being between a source node and a destination node in a communication path. The method includes forming a first policy-compliant message in accordance with the intermediate node policy, the first policy-compliant message including a request for a destination node policy characterizing communication properties supported by the destination node. A system includes a policy retriever comparing a source policy to one to an intermediate policy to determine whether the source policy is compatible with the intermediate policy. A message generator generates a policy request message by applying the intermediate policy to a request for a policy related to a destination node.
    • 一种方法包括检索表征由中间节点支持的通信属性的中间节点策略,所述中间节点在通信路径中的源节点和目的地节点之间。 该方法包括根据中间节点策略形成第一策略兼容消息,第一策略兼容消息包括对目标节点支持的表征通信属性的目的节点策略的请求。 系统包括策略检索器,将源策略与一中间策略进行比较,以确定源策略是否与中间策略兼容。 消息生成器通过将中间策略应用于与目的地节点相关的策略的请求来生成策略请求消息。
    • 12. 发明申请
    • Content-based routing
    • 基于内容的路由
    • US20050198351A1
    • 2005-09-08
    • US10784146
    • 2004-02-20
    • Saurab NogAlfred LeeDavid Levin
    • Saurab NogAlfred LeeDavid Levin
    • G06F15/16
    • H04L45/306H04L45/64H04L67/327
    • Implementations are described and claimed herein for content-based routing of messages in an overlay network. According to an exemplary implementation, routing nodes receive messages and return routing policies to the sending node based at least in part on content of the message. The routing policies include instructions for redirecting similar messages to other nodes in the overlay network. The sending node determines which policies to apply to the message. The sending node may then iterate through the routing policies, modifying the address in the message according to instructions included in the routing policies so that the message is sent, e.g., directly to the intended destination. Accordingly, the sending node is able to bypass one or more intermediary nodes to reduce latency in the overlay network.
    • 在这里描述和要求的实施方案是用于覆盖网络中的消息的基于内容的路由。 根据示例性实现,路由节点至少部分地基于消息的内容来接收消息并将路由策略返回给发送节点。 路由策略包括将类似消息重定向到覆盖网络中的其他节点的指令。 发送节点确定应用于消息的策略。 然后,发送节点可以遍历路由策略,根据包括在路由策略中的指令来修改消息中的地址,使得消息例如直接发送到预定的目的地。 因此,发送节点能够绕过一个或多个中间节点以减少覆盖网络中的等待时间。
    • 13. 发明授权
    • Portable apparatus and method for detection of methylxanthine chemical
species
    • 用于检测甲基黄嘌呤化学物质的便携式仪器和方法
    • US5817454A
    • 1998-10-06
    • US477440
    • 1995-06-07
    • Stuart HarrisDavid Levin
    • Stuart HarrisDavid Levin
    • B01J35/10C10G45/08C12Q1/00
    • C10G45/08Y10T436/16Y10T436/166666
    • A portable apparatus for detecting the presence of at least one methylxanthine chemical species such as caffeine or theophylline in a beverage comprises a first portion comprising an effective concentration of phosphodiesterase enzyme, a second portion comprising cyclic AMP, and means for indicating inhibition of degradation of the cyclic AMP by the phosphodiesterase due to the presence of the methylxanthine species. A method for determining the presence of at least one methylxanthine chemical species in a beverage comprises contacting at least one test portion of the beverage with effective concentrations of at least one phosphodiesterase enzyme and cyclic AMP, and further contacting the test portion with means for indicating the inhibition of the degradation of the cyclic AMP by the phosphodiesterase due to the presence of the methylxanthine species. The apparatus and method are advantageous in that they provide a simple and effective means of determining whether methylxanthine chemical species such as caffeine or theophylline are present in coffee, tea and other beverages.
    • 用于检测饮料中至少一种甲基黄嘌呤化学物质如咖啡因或茶碱的存在的便携式装置包括第一部分,其包含有效浓度的磷酸二酯酶,第二部分包含环状AMP,以及用于指示抑制 由于存在甲基黄嘌呤类,磷酸二酯酶引起的环状AMP。 用于测定饮料中至少一种甲基黄嘌呤化学物质的存在的方法包括使饮料的至少一个测试部分与有效浓度的至少一种磷酸二酯酶和环状AMP接触,并进一步使测试部分与用于指示 抑制由于甲基黄嘌呤物质的存在而导致的磷酸二酯酶对环AMP的降解。 该装置和方法的优点在于它们提供了确定甲基黄嘌呤化学物质如咖啡因或茶碱是否存在于咖啡,茶和其它饮料中的简单和有效的手段。
    • 14. 发明申请
    • METHOD AND APPARATUS FOR USING STATE SPACE DIFFERENTIAL GEOMETRY TO PERFORM NONLINEAR BLIND SOURCE SEPARATION
    • 使用状态空间差分几何来执行非线性盲点分离的方法和装置
    • US20080147763A1
    • 2008-06-19
    • US11952284
    • 2007-12-07
    • David Levin
    • David Levin
    • G06F17/14
    • G06K9/6242
    • Given a time series of possibly multicomponent input data, the method and apparatus includes a device that finds a time series of “source” components, which are possibly nonlinear combinations of the input data components and which can be partitioned into groups that are statistically independent of one another. These groups of source components are statistically independent in the sense that the phase space density function of the source time series is approximately equal to the product of density functions, each of which is a function of the components (and their time derivatives) in one of the groups. In a specific embodiment, an unknown mixture of data from multiple independent source systems (e.g., a transmitter of interest and noise producing system) is processed to extract information about at least one source system (e.g., the transmitter of interest).
    • 给定可能的多组分输入数据的时间序列,该方法和装置包括找到“源”分量的时间序列的装置,其可以是输入数据分量的非线性组合,并且可以被划分为在统计学上独立于 另一个。 在源时间序列的相位空间密度函数近似等于密度函数的乘积的意义上,这些源组成部分在统计上是独立的,每个密度函数是组分(及其时间导数)之一的函数, 团体。 在具体实施例中,处理来自多个独立源系统(例如,感兴趣的发射机和噪声产生系统)的未知数据混合,以提取关于至少一个源系统(例如,感兴趣的发射机)的信息。
    • 20. 发明申请
    • METHOD AND SYSTEM FOR DISPLAYING AN IMAGE INSTEAD OF DATA
    • 用于显示图像数据的方法和系统
    • US20070150389A1
    • 2007-06-28
    • US11680421
    • 2007-02-28
    • Jeffrey AamodtDavid LevinDarius SnapkauskasBrett Bentsen
    • Jeffrey AamodtDavid LevinDarius SnapkauskasBrett Bentsen
    • G06Q40/00G06F17/00
    • G06Q10/06G06Q40/00
    • Displaying graphical indicators, instead of data, based on user-defined conditions. The user can specify conditions for displaying graphical indicators instead of actual data by specifying a test, values, and an image. The graphical indicators can be pre-assigned images that are dynamically applied based on the underlying text or numeric data values. Graphical indicators allow the user to visually represent data types or categories with graphics, based on the user's conditions. Different conditions can be specified for a given data field and each condition can be associated with a particular graphical indicator. Prioritized processing of data conditions allow for complex control of which indicator will be displayed to visually represent the data. When the underlying data in a field changes, the criteria can be reapplied and the field dynamically updated to the appropriate indicator.
    • 根据用户定义的条件显示图形指示符,而不是数据。 用户可以通过指定测试,值和图像来指定显示图形指示符而不是实际数据的条件。 图形指示器可以是基于底层文本或数字数据值动态应用的预分配图像。 图形指示器允许用户根据用户的条件直观地表示图形的数据类型或类别。 可以为给定的数据字段指定不同的条件,并且每个条件可以与特定的图形指示符相关联。 数据条件的优先处理允许对哪个指示符进行复杂的控制,以便可视地表示数据。 当字段中的基础数据更改时,可以重新应用准则,并将该字段动态更新为适当的指示符。