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55 条记录 (耗时 0.034 秒)

    Circuit antitheft and disabling mechanism
    4.
    发明授权
    Circuit antitheft and disabling mechanism 失效
    电路防盗和禁用机制

    公开(公告)号：US5739754A

    公开(公告)日：1998-04-14

    申请号：US681742

    申请日：1996-07-29

    申请人： Alejandro Gabriel Schrott ,  Michael John Brady ,  Thomas A. Cofino ,  Richard Joseph Gambino ,  Robert Jacob Von Gutfeld ,  Harley Kent Heinrich ,  Paul Andrew Moskowitz

    发明人： Alejandro Gabriel Schrott ,  Michael John Brady ,  Thomas A. Cofino ,  Richard Joseph Gambino ,  Robert Jacob Von Gutfeld ,  Harley Kent Heinrich ,  Paul Andrew Moskowitz

    IPC分类号： G08B13/14

    CPC分类号： G08B13/1409

    摘要： The present invention is a magnetic sensor used with one or more frequency band pass filters and a logic circuit that produces a ("critical") signal that is used for enabling and disabling an external electronic circuit, e.g. a computer circuit. The magnetic sensor produces a signal when excited by an externally applied alternating current (ac) magnetic field. The external ac magnetic field can comprise one or more frequencies, each of which induces an electrical signal at the respective frequency in the sensor. Depending on the linearity of the sensor, one or more harmonic frequencies of the signal frequencies can also be induced in the sensor. One or more bandpass filters is connected to the magnetic sensor and each of the bandpass filters is tuned to filter the signal to select filtered signals, from the output of the sensor. A logic circuit is activated by one or more of the filtered signals or a combination of one or more of the signal frequencies. When the logic circuit is activated, a critical signal is applied to an electronic circuit to enable or disable the external electronic circuit.

    摘要翻译： 本发明是与一个或多个频带通滤波器一起使用的磁传感器和产生用于启用和禁用外部电子电路的（“临界”）信号的逻辑电路，例如， 一个电脑电路。 当由外部施加的交流（ac）磁场激励时，磁传感器产生信号。 外部交流磁场可以包括一个或多个频率，每个频率在传感器中以相应的频率感应电信号。 根据传感器的线性度，也可以在传感器中感应出信号频率的一个或多个谐波频率。 一个或多个带通滤波器连接到磁传感器，并且每个带通滤波器被调谐以对信号进行滤波以从传感器的输出中选择滤波信号。 逻辑电路由一个或多个滤波信号或一个或多个信号频率的组合激活。 当逻辑电路被激活时，关键信号被施加到电子电路以启用或禁用外部电子电路。

    System for concealed serialization utilizing a soft magnetic antitheft element
    7.
    发明授权
    System for concealed serialization utilizing a soft magnetic antitheft element 失效
    使用软磁防盗元件进行隐蔽串联的系统

    公开(公告)号：US5736929A

    公开(公告)日：1998-04-07

    申请号：US660261

    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： G06K7/08 ,  G06K19/06 ,  G08B13/24 ,  H05K1/02 ,  G08B13/187

    CPC分类号： G08B13/2408 ,  G06K19/06196 ,  G06K7/082 ,  G08B13/2417 ,  G08B13/2437 ,  G08B13/2442 ,  G08B13/2445 ,  H05K1/0266 ,  H05K1/0275 ,  H05K2201/083

    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. 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 wire or strip forms an integral part of the identification array and can be used as an anti-theft device to trigger an alarm when activated by an external field from a magnetic gate. The array may be personalized (coded) by leaving out elements of the array or by driving selected elements to saturation while others remain demagnetized. The elements can also be in the form of a double array to constitute `l`s and `0`s to form a code. Reading of the elements (code) is accomplished with a special reading head consisting of one or more small magnetic circuits coupled to one or more pickup loops utilizing, in some cases, the Matteucci effect.

    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。 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。 线或条形成识别阵列的组成部分，并且可以用作防盗装置，以在由磁性门的外部场激活时触发警报。 阵列可以通过排除阵列的元件或通过将所选择的元件驱动到饱和而另一些保持去磁来个性化（编码）。 元素也可以是双数组的形式，以构成“l”和“0”来形成代码。 元件（代码）的读取是通过一种特殊的读取头完成的，该读取头由一个或多个小的磁路组成，该小型磁路耦合到一个或多个拾取环路，在某些情况下，利用Matteucci效应。

    Multibit tag with stepwise variable frequencies
    9.
    发明授权
    Multibit tag with stepwise variable frequencies 失效
    具有逐步变化频率的多位标签

    公开(公告)号：US5680106A

    公开(公告)日：1997-10-21

    申请号：US549288

    申请日：1995-10-27

    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： G06K19/067 ,  G08B13/24 ,  G08B13/14

    CPC分类号： G08B13/242 ,  G06K19/0672 ,  G08B13/2417 ,  G08B13/2431 ,  G08B13/2482

    摘要： A transponder is disclosed comprising a resonant RLC circuit with one or more components that can be connected or disconnected non-destructively using switches that respond to an externally applied magnetic field. The switching in or out of the components causes a change in the resonant frequency of the original RLC circuit that is detected by the base station sweeping a carrier signal through a range of frequencies to detect a returned signal that changes when the carrier signal frequency matches the resonant frequency of the resonant circuit/tag. The resonant frequency changes when one or more of the circuit components is connected or disconnected. Each switch transfers at a unique magnetic field intensity so that electrical contact is achieved at a predetermined value of an externally applied magnetic field. The detected changes are used to create a code that is used to pass information from the resonant circuit/tag to the base station.

    摘要翻译： 公开了一种应答器，其包括具有一个或多个组件的谐振RLC电路，其可以使用响应于外部施加的磁场的开关非破坏性地连接或断开。 组件的切换导致原始RLC电路的谐振频率发生变化，由基站检测到的载波信号通过频率范围检测，以检测当载波信号频率匹配时改变的返回信号 谐振电路/标签的谐振频率。 当一个或多个电路组件连接或断开时，谐振频率发生变化。 每个开关以独特的磁场强度转移，使得在外部施加的磁场的预定值处实现电接触。 检测到的改变用于创建用于将信息从谐振电路/标签传递到基站的代码。