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    • 4. 发明申请
    • Multiple Identity Management in an Electronic Commerce Site
    • 电子商务网站中的多重身份管理
    • US20110191831A1
    • 2011-08-04
    • US13087492
    • 2011-04-15
    • Victor S. ChanDarshanand KhusialLev Mirlas
    • Victor S. ChanDarshanand KhusialLev Mirlas
    • H04L9/32
    • G06F21/41G06Q20/3821G06Q30/06H04L29/06H04L63/08H04L63/12H04L67/02H04L69/329H04L2463/102
    • In electronic commerce (e-commerce) sites that are executed on a single e-commerce application, a user's session is only associated with a single user identity for e-commerce site domain. Acting under a single identity across the site may not be desired. There may be requirements to associate an individual user with one or more separate identities within parts of the site. Aspects of the invention provide a method, system and computer program product for managing multiple user identities for a user of an electronic commerce (e-commerce) site. The method comprises defining the e-commerce site as one or more security domains; and in response to a user's request to invoke an operation of the e-commerce site: determining a one of the one or more security domains to which the operation relates; performing one of a) creating a session and b) reusing a session for the user automatically in accordance with the determined security domain, said session associated with a user identity and a role indicating privileges for invoking operations of the e-commerce site in at least the determined security domain; and persisting said session for reuse. The user's request may be received in association with one or more sessions persisted for the user and a one of the sessions selected in accordance with the determined security domain. In response, either a session may be created or reused. Persisting may comprise providing one or more cookies defining the session to the user for associating with a subsequent request. In accordance with a feature of this aspect, the e-commerce site may define each of the one or more security domains as a hierarchy of organizations and assets owned by the organizations and the determining a one of the one or more security domains to which the operation relates may comprise evaluating the user's request in accordance with the hierarchy.
    • 在单个电子商务应用程序中执行的电子商务(电子商务)站点中,用户的会话仅与用于电子商务站点域的单个用户身份相关联。 在整个网站上以单一身份执行,可能不需要。 可能有要求将个别用户与站点内部的一个或多个独立身份相关联。 本发明的方面提供了一种用于管理电子商务(电子商务)站点的用户的多个用户身份的方法,系统和计算机程序产品。 该方法包括将电子商务站点定义为一个或多个安全域; 以及响应于用户请求调用所述电子商务站点的操作:确定所述操作涉及的所述一个或多个安全域中的一个; 执行以下操作之一:a)创建会话,以及b)根据所确定的安全域自动地为用户重新使用会话,所述会话与用户身份相关联,以及至少指定用于调用电子商务站点的操作的权限 确定的安全域; 并持续进行会话重用。 可以与为用户持续的一个或多个会话和根据所确定的安全域选择的一个会话相关联地接收用户的请求。 作为响应,会话可能被创建或重用。 持久化可以包括向用户提供定义会话的一个或多个cookie,以便与后续请求相关联。 根据该方面的特征,电子商务站点可以将一个或多个安全域中的每一个定义为由组织拥有的组织和资产的层次结构,并且确定一个或多个安全域中的一个 操作涉及可以包括根据层次来评估用户的请求。
    • 10. 发明申请
    • CROSS-COUPLED VOLTAGE CONTROLLED OSCILLATOR WITH IMPROVED PHASE NOISE PERFORMANCE
    • 具有改进的相位噪声性能的交叉耦合电压控制振荡器
    • US20030227336A1
    • 2003-12-11
    • US10162579
    • 2002-06-06
    • International Business Machiness Corporation
    • Xudong WangXiaodong Wang
    • H03B001/00
    • H03B5/1231H03B5/1215H03B5/1253
    • A cross-coupled voltage controlled oscillator having reduced phase noise. A pair of bipolar transistors having common emitter connections are coupled to reduce that oscillation frequency which is determined from a tuning circuit connected across the collectors of transistors. First and second varactor diodes provide analog tuning of the circuit, and a digitally controlled capacitor provides for a selection of a band of frequencies to be tuned by the varactor diodes. A current source provides the current to the emitter connections of the bipolar transistors. Second harmonic signals generated at the emitter of the transistors are significantly suppressed by a tuned filtered trap connected to the common emitter connections. By reducing the second harmonic signals, the phase noise or the voltage controlled oscillator can be significantly improved.
    • 具有降低的相位噪声的交叉耦合压控振荡器。 耦合具有公共发射极连接的一对双极型晶体管,以减小由连接在晶体管的集电极上的调谐电路确定的振荡频率。 第一和第二变容二极管提供电路的模拟调谐,并且数字控制电容器用于选择要由变容二极管调谐的频带。 电流源将电流提供给双极晶体管的发射极连接。 通过连接到公共发射器连接的调谐的滤波陷波,显着地抑制在晶体管的发射极处产生的二次谐波信号。 通过减少二次谐波信号,可以显着提高相位噪声或压控振荡器。