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    DEACTIVATABLE RADIO FREQUENCY SECURITY LABEL
    2.
    发明公开
    DEACTIVATABLE RADIO FREQUENCY SECURITY LABEL 审中-公开
    可撤销的射频安全标签

    公开(公告)号：EP1540614A2

    公开(公告)日：2005-06-15

    申请号：EP03794631.6

    申请日：2003-09-05

    申请人： Sensormatic Electronics Corporation

    发明人： NARLOW, Douglas, A. ,  PATTERSON, Hubert, A.

    IPC分类号： G08B13/14

    CPC分类号： G08B13/242

    摘要： A deactivation apparatus for an electronic article surveillance tag having a plurality of layers and an equivalent resonant circuit containing an inductor and a capacitor is provided. The apparatus includes: a capacitor formed by a pair of conductive capacitor plates separated apart by a dielectric layer; an inductor connected to each of the pair of capacitor plates where an electromagnetic field of a preselected frequency at a first magnitude impinging upon the tag causes the equivalent resonant circuit to resonate and produce a detectable response from the tag; and, an electrically weakened area in the dielectric layer between the pair of conductive capacitor plates where the electromagnetic field at a second magnitude higher than the first magnitude impinging upon the tag causes a conductive path through the weakened area electrically connecting the pair of capacitor plates together and deactivating the tag.

    摘要翻译： 提供了一种用于具有多个层的电子物品监视标签的失活装置以及包含电感器和电容器的等效谐振电路。 该装置包括：由一对导电电容器板形成的电容器，该导电电容器板由电介质层分开; 连接到所述一对电容器板中的每一个的电感器，其中撞击所述标签的具有第一大小的预选频率的电磁场引起所述等效谐振电路谐振并且从所述标签产生可检测的响应; 以及在一对导电电容器板之间的电介质层中的电弱化区域，其中以高于第一数量级的第二数量级的电磁场撞击标签导致穿过弱电区域的导电路径，所述弱化区域将所述一对电容器板电连接在一起 并停用标签。

    PULSED POWER METHOD FOR INCREASED READ RANGE FOR A RADIO FREQUENCY IDENTIFICATION READER
    3.
    发明公开
    PULSED POWER METHOD FOR INCREASED READ RANGE FOR A RADIO FREQUENCY IDENTIFICATION READER 有权
    脉冲电源法扩大阅读区的RFID READER

    公开(公告)号：EP1527616A2

    公开(公告)日：2005-05-04

    申请号：EP03751850.3

    申请日：2003-08-11

    申请人： Sensormatic Electronics Corporation

    发明人： PATTERSON, Hubert, A. ,  LAZO, Philip, A.

    IPC分类号： H04Q5/22

    CPC分类号： G06K7/10217 ,  G06K7/0008 ,  G06K7/10019

    摘要： A method to power a radio frequency identification (RFID) reader to increase multi­tag reading capability and increase the reading range of a passive tag without maximizing the continuous transmitted power level is provided. The RFID reader transmits a pulsed interrogation signal until an RFID tag response is received, and then switches to a continuous and pulsed power scheme. The continuous power emitted maintains the power supplied to the RFID tags so the tags will not reset due to loss of power. The pulsed signal permits reading the tags at longer ranges, especially when there is a plurality of tags in the area.

    A MAGNETOMECHANICAL ELECTRONIC ARTICLE SURVEILLANCE SYSTEM AND METHOD USING SIDEBAND DETECTION
    4.
    发明公开
    A MAGNETOMECHANICAL ELECTRONIC ARTICLE SURVEILLANCE SYSTEM AND METHOD USING SIDEBAND DETECTION 有权
    磁机械物品监控系统及方法FOR SEITENBANDDETEKTIERUNG

    公开(公告)号：EP1312059A1

    公开(公告)日：2003-05-21

    申请号：EP01964338.6

    申请日：2001-08-21

    申请人： Sensormatic Electronics Corporation

    发明人： LIAN, Ming-Ren ,  PATTERSON, Hubert, A.

    IPC分类号： G08B13/24

    CPC分类号： G08B13/2408 ,  G08B13/2462

    摘要： An electronic article surveillance (EAS) system and method utilizing two transmitted signals to generate and detect a marker signal is provided. The first signal is set at or near the resonance of the marker so its energy can be transmitted and stored in the marker. The second signal is a low frequency magnetic field that changes the resonant frequency of the marker. Because the marker's resonant frequency is constantly varying in repsonse to the low frequency magnetic field, the marker's response to the first transmitted signal also changes. As a result, the marker performs a modulation on the first transmitted signal. Detection of a sideband of the modulated signal indicates the presence of the marker within an interrogation zone formed by the two transmitted signals. Multiple interrogation zones can be implemented by transmitting multiple low frequency signals, one low frequency signal for each interrogation zone.

    SECURITY ELEMENT FOR THE ELECTRONIC SURVEILLANCE OF ARTICLES
    6.
    发明公开
    SECURITY ELEMENT FOR THE ELECTRONIC SURVEILLANCE OF ARTICLES 失效
    紧固元件用于电子产品ASSURANCE

    公开(公告)号：EP1000419A1

    公开(公告)日：2000-05-17

    申请号：EP98943767.8

    申请日：1998-07-22

    申请人： Meto International GmbH ,  Sensormatic Electronics Corporation

    发明人： RÜHRIG, Manfred ,  STOCKS, David ,  PATTERSON, Hubert, A. ,  MEARS, Gregory, N.

    IPC分类号： G08B13/24 ,  G01V15/00

    CPC分类号： G08B13/2408 ,  G01V15/00 ,  G08B13/2417 ,  G08B13/2437 ,  G08B13/2442

    摘要： The invention is directed to a security element (3) for the electronic surveillance of articles. The object underlying the invention is to propose a security element that is detecting by surveillance system (S1, S2) operating in different frequency ranges (F1, F2). According to an embodiment of the security element of the invention, this object is accomplished by the following features: it is comprised of at least two materials (1; 2) of high permeability which, when excited by an external alternating magnetic field (H), emit each a characteristic signal (signal 1; signal 2); the maximum signal components of the two materials (1; 2) lie in different frequency ranges (F1; F2); and the signal components of the one material (1; 2) are negligibly low in that particular frequency range (F2; F1) in which the signal component of the other material (2; 1) is at a maximum lever.

    MULTI-BIT EAS MARKER POWERED BY INTERROGATION SIGNAL IN THE EIGHT Mhz BAND
    8.
    发明公开
    MULTI-BIT EAS MARKER POWERED BY INTERROGATION SIGNAL IN THE EIGHT Mhz BAND 失效
    通过在8兆赫频段供电的电子物品监视多LABEL请求信号

    公开(公告)号：EP0847569A1

    公开(公告)日：1998-06-17

    申请号：EP96929083.0

    申请日：1996-08-29

    申请人： Sensormatic Electronics Corporation

    发明人： GILES, Olin, S. ,  PATTERSON, Hubert, A. ,  FREDERICK, Richard ,  FERGUSON, David B.

    IPC分类号： G01S13 ,  G08B13

    CPC分类号： G08B13/2431

    摘要： A multi-bit electronic article surveillance marker (10'') includes an antenna circuit (22) and is powered by an interrogation field generated by EAS detection equipment (8) and received by the marker's antenna circuit (22). The marker generates a multi-bit signal by selectively disturbing the interrogation field. The disturbances may be created by selectively short circuiting the marker's antenna circuit (22). All of the marker circuitry, including a coil (14'') that is part of the antenna circuitry (22), may be provided as circuit elements formed on a semiconductor integrated circuit substrate (20).