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    • 9. 发明申请
    • CONTROL FOR EMBEDDED AND DOOR-MOUNTED ANTENNAS
    • 嵌入式和门安装天线的控制
    • WO2008020948A1
    • 2008-02-21
    • PCT/US2007/016244
    • 2007-07-16
    • SENSORMATIC ELECTRONICS CORPORATION
    • BERGMAN, Adam S.SCHNEIDER, Jack H.
    • G08B13/24
    • G08B13/2474G08B13/2471
    • A system and method for controlling door-mounted or door-embedded antennas. An antenna, for example, an EAS or an RF antenna, sends interrogation signals which are received by markers located on merchandise within a range of detection, i.e., an "interrogation zone". Antennas that are mounted on or embedded in a door move along with the motion of the door. Thus, the interrogation zone covered by the antenna's magnetic field is continually changing with the movement of the door. The system and method of the present invention control door-mounted antennas by monitoring the motion of the door upon which the antenna is mounted, and by adjusting the size and breadth of the interrogation zone generated by the antenna accordingly. A processor within a control unit receives positional signals from a position sensor mounted on the moving door, determines whether the interrogation zone should be increased, decreased, shut off, or maintained, and transmits signals to the antenna or to an alarm device, the signal containing interrogation zone modification instructions.
    • 一种用于控制门或门嵌入式天线的系统和方法。 天线,例如EAS或RF天线,发送询问信号,该询问信号由检测范围内的商品的标记即“询问区”接收。 安装在门上或嵌入门中的天线随着门的运动而移动。 因此,由天线的磁场覆盖的询问区域随着门的移动而不断变化。 本发明的系统和方法通过监视安装有天线的门的运动并通过相应地调整由天线产生的询问区的大小和宽度来控制门安装的天线。 控制单元内的处理器从安装在移动门上的位置传感器接收位置信号,确定询问区是否应增加,减少,切断或保持,并将信号发送到天线或报警装置,信号 包含询问区修改说明。