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    • 51. 发明申请
    • Method and Apparatus for Generating Constraint Route
    • 用于生成约束路线的方法和装置
    • US20120093164A1
    • 2012-04-19
    • US13257911
    • 2010-04-26
    • Zhihong WangDajiang Wang
    • Zhihong WangDajiang Wang
    • H04L12/56
    • H04L45/12H04L45/14
    • A method and an apparatus for generating a constraint based routing are disclosed in the present invention. The method includes: when computing a routing with a constraint condition, directly computing paths from a head node to a tail node of the routing, and comparing the paths that are computed with the constraint condition of the routing, and adding one or more paths which satisfy the constraint condition of the routing to a result set of routing computation. The present invention further discloses a corresponding apparatus, which includes a path calculation module, a comparison module and a storage module. With the present invention, when a routing query request with constraint conditions is processed, phenomena of omission or error can be avoided, thereby ensuring the correctness of the routing calculation result.
    • 在本发明中公开了一种用于生成基于约束的路由的方法和装置。 该方法包括:当计算具有约束条件的路由时,直接计算从路由的头节点到尾节点的路径,以及将所计算的路径与路由的约束条件进行比较,并且添加一条或多条路径 满足路由到路由计算结果集的约束条件。 本发明还公开了一种对应的装置,其包括路径计算模块,比较模块和存储模块。 利用本发明,当处理具有约束条件的路由查询请求时,可以避免遗漏或错误现象,从而确保路由计算结果的正确性。
    • 55. 发明授权
    • Method of interferometry with modulated optical path-length difference and interferometer
    • 具有调制光程差和干涉仪的干涉测量方法
    • US06958817B1
    • 2005-10-25
    • US10917806
    • 2004-08-13
    • Weiguang ZhuZhihong WangChen ChaoOoi Kiang Tan
    • Weiguang ZhuZhihong WangChen ChaoOoi Kiang Tan
    • G01B9/02
    • G01B9/02083G01B9/0201G01B2290/35G01B2290/70
    • An interferometer has a source for generating a first beam and a second beam of a coherent monochromatic light having a wavelength λ, optical elements for directing the beams through two different optical paths having a path-length difference, a detector for detection of an interference signal of the beams, and a modulator for additionally varying the path-length difference periodically to allow the interference signal be detected near a path-length difference of λ/4 periodically. A maximum intensity change in the interference signal caused by a small period change of the path-length difference is thus detectable. The maximum intensity change caused by varying the path-length difference by at least λ/2 may also be detectable. The interferometer may be used to measure small vibrations, without pre-calibration and/or a feedback servo system for keeping the path-length difference near λ/4.
    • 干涉仪具有用于产生第一光束的源和具有波长λ的相干单色光的第二光束,用于引导光束通过具有路径长度差的两个不同光路的光学元件,用于检测干涉信号的检测器 以及用于周期性地附加地改变路径长度差以允许在λ/ 4的路径长度差周期性附近检测干扰信号的调制器。 因此,可以检测由路径长度差的小周期变化引起的干扰信号的最大强度变化。 通过将路径长度差改变至少λ/ 2引起的最大强度变化也可以是可检测的。 干涉仪可以用于测量小的振动,而不需要预校准和/或用于将路径长度差保持在λ/ 4附近的反馈伺服系统。