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    • 41. 发明授权
    • Optical demultiplexer based on three-dimensionally periodic photonic crystals
    • 基于三维周期光子晶体的光解复用器
    • US06721476B2
    • 2004-04-13
    • US10006520
    • 2001-12-03
    • Aravind PadmanabhanAnvar ZakhidovTeresa MartaGuenadiy LazarovDane Larson
    • Aravind PadmanabhanAnvar ZakhidovTeresa MartaGuenadiy LazarovDane Larson
    • G02B6293
    • G02B6/13B82Y20/00G02B6/1225
    • The invention provides photonic crystal optical demultiplexer devices produced from a three-dimensionally-periodic, porous, dielectric, photonic crystalline structure, which has surfaces or interfaces that are inverse replicas of the surfaces of a monodispersed sphere array. Such a photonic crystal optical demultiplexer comprises a three-dimensionally-periodic, porous, dielectric, photonic crystalline structure, which structure has surfaces or interfaces that are inverse replicas of the surfaces of a monodispersed sphere array, wherein necks exists between neighboring spheres in said sphere array and the average sphere diameter does not exceed about 1000 nm. A first optical waveguide is positioned to direct a broad wavelength band of incident light onto the crystalline structure. A second optical waveguide positioned to receive a narrow wavelength band of reflected light from the crystalline structure.
    • 本发明提供由三维周期性,多孔的电介质的光子晶体结构产生的光子晶体光解复用器,其具有与单分散球阵列的表面相反的副本的表面或界面。 这种光子晶体光解复用器包括三维周期性,多孔的电介质的光子晶体结构,该结构具有表面或界面,其是单分散球体阵列的表面的反向复制,其中颈部存在于所述球体中的相邻球体之间 阵列,平均球体直径不超过约1000nm。 第一光波导被定位成将入射光的宽波长带引导到晶体结构上。 定位成接收来自晶体结构的反射光的窄波长带的第二光波导。
    • 43. 发明申请
    • BUILDING MAP GENERATION USING LOCATION AND TRACKING DATA
    • 使用位置和跟踪数据构建地图生成
    • US20120173204A1
    • 2012-07-05
    • US13092038
    • 2011-04-21
    • Aravind PadmanabhanSteve Huseth
    • Aravind PadmanabhanSteve Huseth
    • G06F17/50
    • G01C15/00G01C21/206G01S13/89G01S15/89
    • A system and method are presented for producing a model of the interior of a building. The model is capable of receiving and dynamically incorporating input from various sources including, for example, existing static map data, data such as annotations and updates provided by persons on the scene but outside the building, and real-time data from sensors located on mobile persons or assets that are dynamically moving inside the building. In some cases, the moving persons or assets inside the building may carry a unit that emits sound or electromagnetic pulses, which reflect off the immediate surroundings in a particular room or portion of the building, and sense the reflected pulses. The reflections from relatively close features may arrive at the sensor more quickly than those from relatively distant features, so that temporal analysis of the reflected pulse may provide information about features in the building as a function of their distance away from the unit. Pulses may be emitted and received at multiple locations in a room or portion of the building. The reflected pulses may be analyzed, using specific time shifts that correspond to round-trip travel times in particular directions, so that the actual locations of features may be identified. By walking from room-to-room throughout the interior of a building and performing such analysis, much or all of the interior of a building may be mapped.
    • 提出了一种用于生产建筑物内部模型的系统和方法。 该模型能够接收并动态地并入来自各种来源的输入,包括例如现有的静态地图数据,诸如注释和数据,例如场景中的人,但在建筑物之外提供的更新,以及位于移动设备上的传感器的实时数据 在建筑物内动态移动的人员或资产。 在某些情况下,建筑物内的移动人员或资产可能会携带发出声音或电磁脉冲的单元,这些单元反射出建筑物的特定房间或部分的周围环境,并感测到反射的脉冲。 来自相对较近的特征的反射可以比来自相对远的特征的那些更快地到达传感器,使得反射脉冲的时间分析可以作为它们离开该单元的距离的函数来提供关于建筑物中的特征的信息。 脉冲可以在建筑物的房间或部分的多个位置发射和接收。 可以使用与特定方向上的往返旅行时间对应的特定时间偏移来分析反射脉冲,从而可以识别特征的实际位置。 通过从建筑物内部的房间到室内的行走,进行这种分析,可以映射建筑物的大部分或全部内部空间。