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    Controlling Inductive Power Transfer Systems
    22.
    发明申请
    Controlling Inductive Power Transfer Systems 有权
    控制感应电力传输系统

    公开(公告)号：US20070228833A1

    公开(公告)日：2007-10-04

    申请号：US11569035

    申请日：2005-05-11

    Applicant: Michael Stevens ,  Alexander Knill ,  John Dunton ,  Andrew Dames ,  Kevin Lamb

    Inventor： Michael Stevens ,  Alexander Knill ,  John Dunton ,  Andrew Dames ,  Kevin Lamb

    IPC: H02J5/00

    CPC classification number: H02J50/80 ,  G05F1/66 ,  H01F38/14 ,  H02J5/005 ,  H02J17/00 ,  H02J50/10 ,  H02J50/12 ,  H02J50/60 ,  Y10T307/297 ,  Y10T307/406 ,  Y10T307/511

    Abstract: An inductive power transfer system comprises a primary unit 10, having a primary coil 12 and an electrical drive unit 14 which applies electrical drive signals to the primary coil so as to generate an electromagnetic field. The system also comprises at least one secondary device 30, separable from the primary unit and having a secondary coil 32 which couples with the field when the secondary device is in proximity to the primary unit. A control unit 16 causes a circuit including said primary coil to operate, during a measurement period, in an undriven resonating condition. In this condition the application of the drive signals to the primary coil by the electrical drive unit is suspended so that energy stored in the circuit decays over the course of the period. A decay measurement unit 18 takes one or more measures of such energy decay during the measurement period. In dependence upon said one or more energy decay measures, the control unit controls the electrical drive unit so as to restrict or stop inductive power transfer from the primary unit.

    Abstract translation: 感应电力传输系统包括主单元10，其具有初级线圈12和电驱动单元14，其将电驱动信号施加到初级线圈以便产生电磁场。 该系统还包括至少一个次级装置30，其可与主单元分离并且具有次级线圈32，当次级装置接近初级装置时，它与该场耦合。 控制单元16使得包括所述初级线圈的电路在测量周期期间在未驱动的谐振条件下操作。 在这种情况下，通过电驱动单元将驱动信号施加到初级线圈被暂停，使得存储在电路中的能量在该周期的过程中衰减。 衰减测量单元18在测量周期期间采取这种能量衰减的一个或多个措施。 根据所述一个或多个能量衰减措施，控制单元控制电驱动单元以限制或停止从主单元的感应功率传递。

    Optical element positioning devices
    23.
    发明申请
    Optical element positioning devices 审中-公开
    光学元件定位装置

    公开(公告)号：US20070018070A1

    公开(公告)日：2007-01-25

    申请号：US10565026

    申请日：2004-07-22

    Applicant: Andrew Dames

    Inventor： Andrew Dames

    IPC: G01J1/20

    CPC classification number: G02B26/0816 ,  G02B7/182

    Abstract: An optical element positioning arrangement comprises a reflective optical element, actuators, flexures located between the actuators and said optical element, the arrangement being configured so that when a first actuator is actuated any displacement generated is transmitted via a flexure to said optical element and provided that a second actuator's displacement defers from the displacement of the first, the optical element is caused to swing, characterised in that the actuators are spaced relative to one another and placed substantially parallel to one another.

    Abstract translation: 光学元件定位装置包括反射光学元件，致动器，位于致动器和所述光学元件之间的挠曲件，该布置被构造成使得当第一致动器被致动时，所产生的任何位移通过挠曲件传递到所述光学元件， 第二致动器的位移从第一致动器的位移偏离，使光学元件摆动，其特征在于，致动器相对于彼此间隔开并且基本上彼此平行地设置。

    Antipilferage markers
    24.
    发明授权
    Antipilferage markers 失效
    防滑标记

    公开(公告)号：US5689263A

    公开(公告)日：1997-11-18

    申请号：US178571

    申请日：1994-01-07

    Applicant: Andrew Dames

    Inventor： Andrew Dames

    IPC: C23F4/00 ,  G08B13/24 ,  H01G4/40 ,  H01Q13/08 ,  G01S13/08 ,  B05D5/12 ,  B32B31/00 ,  G08B13/14

    CPC classification number: G08B13/242 ,  G08B13/2437 ,  G08B13/2442 ,  Y10T156/1082

    Abstract: An antipilferage tag is disclosed which includes a resonant circuit adapted to receive an RF signal and to transmit a response signal when interrogated by said RF signal. The tag includes circuit components constituted by or fabricated from a metallized layer supported by a dielectric material.

    Abstract translation: 公开了一种防盗标签，其包括适于接收RF信号的谐振电路，并且在被所述RF信号询问时发送响应信号。 标签包括由由电介质材料支撑的金属化层构成或由其制造的电路部件。

    Harmonic-based verifier device for a magnetic security thread having linear and non-linear ferromagnetic characteristics
    25.
    发明授权
    Harmonic-based verifier device for a magnetic security thread having linear and non-linear ferromagnetic characteristics 失效
    用于具有线性和非线性铁磁特性的磁安全线的基于谐波的验证器装置

    公开(公告)号：US5614824A

    公开(公告)日：1997-03-25

    申请号：US441533

    申请日：1995-05-15

    Applicant: Andrew Dames ,  David Ely ,  Colin Ager

    Inventor： Andrew Dames ,  David Ely ,  Colin Ager

    IPC: G01N27/72 ,  G01R33/12 ,  G06K7/08 ,  G07D7/00 ,  G07D7/02 ,  G07D7/04 ,  G08B13/24

    CPC classification number: G07D7/04

    Abstract: A security thread for use in a paper-based value document, such as currency or banknote paper, includes a plastic substrate coated with one or more regions of "soft" magnetic material. A device for verifying both the authenticity and the denomination of the document includes a coil that is driven by an alternating current to thereby provide a uniform magnetic field within a predetermined spatial region. As the document passes in proximity to the drive coil, the applied magnetic field saturates the regions of magnetic material on the security thread. The magnetic regions provide a response magnetic field that, because of the saturation of the magnetic regions, is a non-linear response containing a multiple of frequency components, including a component at the fundamental or drive frequency and various harmonic frequency components. A receive coil senses the response magnetic field. A signal processor connected to the receive coil utilizes the response signals at the fundamental frequency and the low-order harmonic frequencies to determine both the type of magnetic material on the security thread and the denomination of the document from the spatial distribution of the magnetic regions on the security thread.

    Abstract translation: 用于基于纸张的价值文档（例如货币或钞票纸）中的安全线程包括涂覆有一个或多个“软”磁性材料区域的塑料基板。 用于验证文件的真实性和面额的装置包括由交流电驱动从而在预定空间区域内提供均匀磁场的线圈。 当文档经过驱动线圈附近时，所施加的磁场使安全线上的磁性材料的区域饱和。 磁性区域提供响应磁场，由于磁性区域的饱和，该响应磁场是包含多个频率分量，包括基波或驱动频率的分量以及各种谐波频率分量的非线性响应。 接收线圈感应响应磁场。 连接到接收线圈的信号处理器利用基频和低次谐波频率的响应信号来确定安全线上的磁性材料的类型和来自磁区的空间分布的文档面值 安全线程。

    Method and system for detecting a marker
    27.
    发明授权
    Method and system for detecting a marker 失效
    用于检测标记的方法和系统

    公开(公告)号：US5414410A

    公开(公告)日：1995-05-09

    申请号：US194285

    申请日：1994-02-10

    Applicant: Daffyd G. Davies ,  Andrew Dames ,  Michael D. Crossfield

    Inventor： Daffyd G. Davies ,  Andrew Dames ,  Michael D. Crossfield

    IPC: G01V3/10 ,  G01V3/00 ,  G01V15/00 ,  G08B13/24 ,  G08B13/187

    CPC classification number: G08B13/2408 ,  G08B13/2471 ,  G08B13/2474

    Abstract: An electronic article surveillance system is provided having a transmitter for generating two alternating magnetic fields by way of a single transmitter coil fed with a transmitter signal current, and a receiver that detects harmonics and intermodulation products of the alternating magnetic fields by way of a receiver coil that generates a receiver signal current. The receiver comprises a wide-bandwidth phase detector locked on to a frequency p.f.sub.2 .+-.q.f.sub.1, where p and q are positive integers, one of which may be zero, and a digital signal processor adapted to carry out a full time-domain analysis of the waveform of the receiver signal current, and wherein the transmitter signal current corresponds to the linear super position of two alternative currents with a relatively low frequency f.sub.1 and high frequency f.sub.2 respectively.

    Abstract translation: 提供一种电子物品监视系统，其具有通过馈送有发射机信号电流的单个发射器线圈产生两个交变磁场的发射器，以及通过接收器线圈检测交变磁场的谐波和互调产物的接收器 产生接收机信号电流。 接收机包括锁定在频率p.f2 +/- q.f1上的宽带相位检测器，其中p和q是正整数，其中之一可以为零，以及适于执行全时间的数字信号处理器 对接收机信号电流的波形进行分析，其中发射机信号电流分别对应于具有相对低频率f1和高频f2的两个替代电流的线性超位置。

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