公开(公告)号：US4800369A

公开(公告)日：1989-01-24

申请号：US918919

申请日：1986-10-15

申请人： Toyoji Gomi ,  Kozo Yamada

发明人： Toyoji Gomi ,  Kozo Yamada

IPC分类号： G08B13/24 ,  G08B13/18

CPC分类号： G08B13/2431 ,  G08B13/2434

摘要： Anti-shoplifting system comprising a switching circuit, a signal generator, and a detector gate. Said switching circuit has a built-in flat-shaped miniature power pack which is attached to individual goods sold in shops and switches on and maintains the circuit of said power pack switched on under the action of external radiowaves. The signal generator consists of a built-in signal-transmitting circuit for transmitting radio signals of a specific frequency from said power supply. The detector gate is provided with a signal-generating state forming a weak radiowave area of the required frequency to energize the switching circuit of said signal generator and receives the radiowaves transmitted from said signal generator so as to drive an alarm device via said received signals.

摘要翻译： 防盗窃系统包括开关电路，信号发生器和检测器门。 所述开关电路具有内置的平型微型电源组件，其连接到在商店中销售的各个商品并且在外部无线电波的作用下接通和维持所述电源组的电路接通。 信号发生器由用于从所述电源发送特定频率的无线电信号的内置信号传输电路组成。 检测器门具有形成所需频率的弱无线电波区域的信号生成状态，以激励所述信号发生器的开关电路，并接收从所述信号发生器发送的无线电波，以便经由所述接收的信号驱动报警装置。