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55 条记录 (耗时 0.021 秒)

    Concealed magnetic ID code and antitheft tag
    53.
    发明授权
    Concealed magnetic ID code and antitheft tag 失效
    隐藏的磁性ID代码和防盗标签

    公开(公告)号：US5821859A

    公开(公告)日：1998-10-13

    申请号：US660249

    申请日：1996-06-07

    申请人： Alejandro Gabriel Schrott ,  Richard Joseph Gambino ,  Robert Jacob von Gutfeld

    发明人： Alejandro Gabriel Schrott ,  Richard Joseph Gambino ,  Robert Jacob von Gutfeld

    IPC分类号： G01V15/00 ,  G06K19/06 ,  G08B13/24 ,  H05K1/02 ,  G08B13/187

    CPC分类号： G08B13/2408 ,  G01V15/00 ,  G06K19/06196 ,  G08B13/2417 ,  G08B13/2437 ,  G08B13/2442 ,  G08B13/2462 ,  H05K1/0266

    摘要： The invention relates to a special type of magnetic tag that serves both as an identifier of the article to which it is attached and as an antitheft device. The former attribute is especially important should stolen property be recovered. Identification comes about through the use of an array of individual magnetic elements that are closely spaced, preferably along and perpendicular to an amorphous wire or strip. The magnetic elements can take the form of magnetic ink, high coercivity wire, thin foil, or amorphous wire. The array may be personalized (coded) by leaving out elements of the array or driving selected elements to saturation while others remain demagnetized. The elements can also be in the form of a double array to constitute `1`s and `0`s to form a code. Reading of the elements is accomplished with a special reading head consisting or one or more small magnetic circuits coupled to one or more pickup loops. A longer length of soft magnetic wire or thin strip is used to trigger an anti-theft alarm when activated by an external field from a magnetic gate.

    摘要翻译： 本发明涉及一种特殊类型的磁性标签，其既用作与其连接的物品的标识符，也用作防盗装置。 以前的属性特别重要的是应该将被盗的财产追回。 通过使用紧密间隔的单独磁性元件的阵列，优选地沿着并垂直于非晶线或条带来进行识别。 磁性元件可以采取磁性墨水，高矫顽力丝，薄箔或非晶线的形式。 阵列可以通过排除阵列的元件或驱动所选择的元素而被个性化（编码）以达到饱和，而其他元素保持去磁。 元素也可以是双数组的形式，以构成“1”和“0”来形成代码。 元件的读取是通过一个特殊的读取头来组成的，或者一个或多个耦合到一个或多个拾音器环路的小磁路。 使用较长长度的软磁线或薄带来在通过磁性门的外部场激活时触发防盗报警。

    Modulation of the resonant frequency of a circuit using an energy field
    54.
    发明授权
    Modulation of the resonant frequency of a circuit using an energy field 失效
    使用能量场调制电路的谐振频率

    公开(公告)号：US5812065A

    公开(公告)日：1998-09-22

    申请号：US569375

    申请日：1995-12-08

    申请人： Alejandro Gabriel Schrott ,  Richard Joseph Gambino ,  Robert Jacob von Gutfeld

    发明人： Alejandro Gabriel Schrott ,  Richard Joseph Gambino ,  Robert Jacob von Gutfeld

    IPC分类号： G01S13/75 ,  G06K7/00 ,  G06K19/07 ,  H04B1/59

    CPC分类号： G06K19/0726 ,  G01S13/753 ,  G06K19/0723 ,  G06K7/0008 ,  Y10T70/5004

    摘要： A transponder has a resonant RLC circuit with one or more electromagnetic energy storage components that vary in response to an externally applied modulating energy field. In addition to the externally modulating energy field, a base station transmits a carrier signal with a frequency essentially the same as the quiescent resonant frequency of the RLC circuit. As the component(s) vary, the resonant frequency of the RLC circuit changes, modulating the carrier signal with the external modulating energy field. Effects of the modulation are detected by the base station. Information (e.g., the presence of a tag) is obtained by receiving and demodulating the modulated signal at the base station. One or more of the circuit elements (e.g., different preferred embodiments of one or more capacitors, inductors, and resistors) can be varied (e.g. mechanically) to modulate the carrier signal. This allows the resonant circuit to modulate the carrier signal with multiple modulation frequencies to encode multiple bits of information on the carrier.

    摘要翻译： 应答器具有谐振RLC电路，其具有响应于外部施加的调制能量场而变化的一个或多个电磁能量存储部件。 除了外部调制能量场之外，基站发送具有与RLC电路的静态谐振频率基本相同的频率的载波信号。 当组件变化时，RLC电路的谐振频率改变，用外部调制能量场调制载波信号。 调制的影响由基站检测。 通过在基站接收和解调调制信号来获得信息（例如，标签的存在）。 可以改变一个或多个电路元件（例如，一个或多个电容器，电感器和电阻器的不同优选实施例）（例如机械地）来调制载波信号。 这允许谐振电路以多个调制频率来调制载波信号，以对载波上的多个信息位进行编码。