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    • 41. 发明授权
    • Method and system for automatic objects classification
    • 自动对象分类的方法和系统
    • US08275765B2
    • 2012-09-25
    • US12607369
    • 2009-10-28
    • Jianqiang LiXin MengYu ZhaoJingwei Shi
    • Jianqiang LiXin MengYu ZhaoJingwei Shi
    • G06F17/30
    • G06F17/30707
    • The present invention provides a method and system for automatic objects classification. The method comprises: acquiring a set of objects; classifying the objects based on query log to generate a first classification result; classifying the objects based on ontological information to generate a second classification result; and semantically fusing the first and second classification results to generate a final classification result. According to the present invention, compared with the prior arts, by semantically fusing the query log-based classification result and the ontology-based classification result, the accuracy and user-friendness of the object classification can be improved.
    • 本发明提供了一种自动对象分类的方法和系统。 该方法包括:获取一组对象; 基于查询日志对对象进行分类,生成第一个分类结果; 基于本体信息对对象进行分类,生成第二分类结果; 并且语义地融合第一和第二分类结果以产生最终分类结果。 根据本发明,与现有技术相比,通过语义地融合基于查询对象的分类结果和基于本体的分类结果,可以提高对象分类的准确性和用户友好性。
    • 45. 发明授权
    • Digital tunable inter-stage matching circuit
    • 数字可调谐级间匹配电路
    • US08072272B2
    • 2011-12-06
    • US12715254
    • 2010-03-01
    • Yu ZhaoBabak NejatiNathan M PletcherAristotele Hadjichristos
    • Yu ZhaoBabak NejatiNathan M PletcherAristotele Hadjichristos
    • H03F3/04
    • H03F1/42H03F1/223H03F3/193H03F2200/318H03H7/40
    • A tunable inter-stage matching circuit that can improve performance is described. In an exemplary design, an apparatus includes a first active circuit (e.g., a driver amplifier), a second active circuit (e.g., a power amplifier), and a tunable inter-stage matching circuit coupled between the first and second active circuits. The tunable inter-stage matching circuit includes a tunable capacitor that can be varied in discrete steps to adjust impedance matching between the first and second active circuits. In an exemplary design, the tunable capacitor includes (i) a plurality of capacitors coupled in parallel and (ii) a plurality of switches coupled to the plurality of capacitors, one switch for each capacitor. Each switch may be turned on to select an associated capacitor or turned off to unselect the associated capacitor. The tunable capacitor may further include a fixed capacitor coupled in parallel with the plurality of capacitors.
    • 描述了可以提高性能的可调谐级间匹配电路。 在示例性设计中,装置包括耦合在第一和第二有源电路之间的第一有源电路(例如,驱动器放大器),第二有源电路(例如,功率放大器)和可调谐级间匹配电路。 可调谐级间匹配电路包括可以在离散步骤中变化的可调谐电容器,以调整第一和第二有源电路之间的阻抗匹配。 在示例性设计中,可调谐电容器包括(i)并联耦合的多个电容器和(ii)耦合到多个电容器的多个开关,用于每个电容器的一个开关。 每个开关可以被接通以选择一个相关联的电容器或关闭以取消选择相关联的电容器。 可调谐电容器还可以包括与多个电容器并联耦合的固定电容器。
    • 46. 发明申请
    • POWER AMPLIFIER WITH SWITCHED OUTPUT MATCHING FOR MULTI-MODE OPERATION
    • 具有多模操作的开关量输出匹配功率放大器
    • US20110018632A1
    • 2011-01-27
    • US12623248
    • 2009-11-20
    • Nathan PletcherAristotele HadjichristosYu ZhaoBabak Nejati
    • Nathan PletcherAristotele HadjichristosYu ZhaoBabak Nejati
    • H03F1/56
    • H04B1/0458H03F1/56H03F3/245H04B1/406
    • Exemplary embodiments are directed to a transmitter with a power amplifier and a switched output matching circuit implementing a plurality of output paths for a plurality of operating modes is described. The power amplifier receives an input RF signal and provides an amplified RF signal. An output matching network performs impedance transformation from low impedance at the power amplifier output to higher impedance at the matching network output. The plurality of output paths are coupled to the output matching network. Each output path provides a different target output impedance for the power amplifier and routes the amplified RF signal from the power amplifier to an antenna when that output path is selected. Each output path may include a matching network coupled in series with a switch. The matching network provides the target output impedance for the power amplifier when the output path is selected. The switch couples or decouples the output path to/from the power amplifier.
    • 示例性实施例涉及具有功率放大器和实现用于多个操作模式的多个输出路径的切换输出匹配电路的发射机。 功率放大器接收输入RF信号并提供放大的RF信号。 输出匹配网络执行从功率放大器输出端的低阻抗到匹配网络输出端的较高阻抗的阻抗变换。 多个输出路径耦合到输出匹配网络。 当选择该输出路径时,每个输出路径为功率放大器提供不同的目标输出阻抗,并将放大的RF信号从功率放大器路由到天线。 每个输出路径可以包括与开关串联耦合的匹配网络。 当选择输出路径时,匹配网络为功率放大器提供目标输出阻抗。 开关将输出路径耦合到/从功率放大器解耦。