Modulation of the resonant frequency of a circuit using an energy field
    2.
    发明授权
    Modulation of the resonant frequency of a circuit using an energy field 有权
    使用能量场调制电路的谐振频率

    公开(公告)号:US07123129B1

    公开(公告)日:2006-10-17

    申请号:US10391515

    申请日:2003-03-18

    IPC分类号: H04Q5/22

    CPC分类号: G06K19/0723 G06K19/07749

    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 or 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)。 一个或多个或电路元件(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)可以改变(例如机械地)以调制载波信号。 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。

    Modulation of the resonant frequency of a circuit using an energy field
    3.
    发明授权
    Modulation of the resonant frequency of a circuit using an energy field 有权
    使用能量场调制电路的谐振频率

    公开(公告)号:US06535108B1

    公开(公告)日:2003-03-18

    申请号:US09136157

    申请日:1998-08-18

    IPC分类号: H04Q522

    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。

    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

    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。

    Antenna for RF tag with a magnetoelastic resonant core
    5.
    发明授权
    Antenna for RF tag with a magnetoelastic resonant core 有权
    具有磁弹性共振芯的RF标签天线

    公开(公告)号:US6130612A

    公开(公告)日:2000-10-10

    申请号:US309330

    申请日:1999-05-11

    IPC分类号: G06K19/07 G08B13/14

    CPC分类号: G06K19/0723

    摘要: A radio frequency identification transponder (RFID tag) includes an RFID antenna and one or more elements of nonlinear magnetic material tuned to resonate at substantially the same frequency as the resonant frequency of the tag antenna. This co-resonance amplifies signals that impinge upon the antenna, yielding both a higher level signal from the antenna to the tag electronics and wider operational bandwidth for the tag. With the addition of the nonlinear magnetic material, the tag may also be employed as a magnetic surveillance tag, with the attendant non-screening capabilities. With a plurality of nonlinear magnetic elements tuned to different resonant frequencies, the tag may provide more "non-screenable" information, that is, two bits, or four binary states, for example, when two such elements are employed.

    摘要翻译: 射频识别应答器(RFID标签)包括RFID天线和被调谐以与标签天线的谐振频率基本相同的频率谐振的非线性磁性材料的一个或多个元件。 这种共同共振放大了撞击在天线上的信号,产生了从天线到标签电子装置的较高电平信号和标签的更宽的操作带宽。 随着非线性磁性材料的添加,标签也可以用作磁性监视标签,伴随着非屏蔽能力。 利用调谐到不同谐振频率的多个非线性磁性元件,例如当使用两个这样的元件时,标签可以提供更多的“不可屏蔽的”信息,即两个位或四个二进制状态。

    Panel assembly for liquid crystal displays having a barrier fillet and an adhesive fillet in the periphery
    7.
    发明授权
    Panel assembly for liquid crystal displays having a barrier fillet and an adhesive fillet in the periphery 有权
    用于液晶显示器的面板组件,其外围具有屏障圆角和粘合剂圆角

    公开(公告)号:US06219126B1

    公开(公告)日:2001-04-17

    申请号:US09197004

    申请日:1998-11-20

    IPC分类号: G02F11339

    CPC分类号: G02F1/1339

    摘要: When fabricating a liquid crystal panel from a pair of substrates using the “one-drop fill” method to deposit liquid crystal material in a central portion of one substrate and then sealing the substrates together with a fillet of epoxy between the outer peripheral portions of the substrates, the uncured epoxy tends to contaminate the liquid crystal material and impair its function. Here, a relatively thick barrier fillet, as of silicone elastomer, is deposited in the form of a continuous closed circuit upon one of the substrates and is fully cured before depositing the liquid crystal material within that closed circuit. To seal the substrates together, they are brought together to a spacing determined by a relatively thin spacer fillet provided on one of the substrates and an epoxy fillet is deposited along the outer periphery of the substrates. The barrier fillet, preferably compressed, serves to prevent contamination of the liquid crystal material by any regions of uncured epoxy. In one variation, the epoxy fillet is formed from a two-component epoxy by depositing a continuous circuit of one component to surround the barrier fillet on one substrate and depositing an identical continuous circuit of the other component on the other substrate before joining the substrates together to intermix and cause cross-linking of the the components to form a cured epoxy fillet.

    摘要翻译: 当使用“一滴填充”方法从一对基板制造液晶面板以将液晶材料沉积在一个基板的中心部分中,然后在基板的外周部分之间用环氧树脂封装基板 未固化的环氧树脂易于污染液晶材料并损害其功能。 这里,作为有机硅弹性体的相对较厚的阻挡层,以其中一个基板上的连续闭路的形式沉积,并且在将该液晶材料沉积在闭合回路内之前完全固化。 为了将基板密封在一起,它们被组合在一起,该间隔由设置在其中一个基板上的相对薄的间隔圆角确定,并且环氧基底沿着基板的外周边沉积。 隔离片,优选压缩,用于防止未固化环氧树脂的任何区域对液晶材料的污染。 在一个变型中,环氧圆角由双组分环氧树脂形成,通过沉积一个组件的连续电路以围绕一个衬底上的阻挡圆角并且在将衬底连接在一起之前在另一个衬底上沉积另一个组件的相同的连续电路 混合并引起组分的交联以形成固化的环氧基底。

    Methods of forming liquid display panels and the like wherein using two-component epoxy sealant
    8.
    发明授权
    Methods of forming liquid display panels and the like wherein using two-component epoxy sealant 有权
    形成液体显示面板等的方法,其中使用双组分环氧密封剂

    公开(公告)号:US06636290B1

    公开(公告)日:2003-10-21

    申请号:US09307887

    申请日:1999-05-10

    IPC分类号: G02F113

    摘要: Liquid crystal display (LCD ) panels can be formed rapidly by this method, which involves depositing liquid crystal (LC) in a central region of one substrate, depositing a fillet of epoxy material in a continuous loop along the periphery of one substrate to surround the LC material, placing a second glass substrate over the first substrate and in continuous contact with the epoxy fillet, and then causing the fillet to set by curing or cross-linking. Advantageously, the epoxy fillet can be hardened by scanning it with an infrared or ultraviolet laser focussed to avoid heating the LC material. Alternatively, the epoxy fillet can be formed from two-component epoxy by depositing one fillet of each component on the peripheral region of one of the substrates, joining the substrates to merge the two components, and then vibrating the joined substrates to enhance commingling and setting of the two components into a strong hermetic seal.

    摘要翻译: 可以通过这种方法快速形成液晶显示(LCD)面板,其包括在一个基板的中心区域沉积液晶(LC),沿着一个基板的周边在连续的环路中沉积环氧树脂的圆角以包围 LC材料,将第二玻璃基板放置在第一基板上并与环氧圆角连续接触,然后通过固化或交联来使圆角固定。 有利的是,可以用聚焦的红外线或紫外线激光器对环氧胶片进行硬化,以避免加热LC材料。 或者,可以通过在一个基板的周边区域上沉积每个部件的一个圆角来形成环氧圆角,从而将两个部件合并,从而使接合的基板振动以增强混合和设定 的两个部件成为一个强大的气密密封。