Block occupancy detector for model railroads
    41.
    发明授权
    Block occupancy detector for model railroads 失效
    型号铁路的座位占用检测器

    公开(公告)号:US06766988B1

    公开(公告)日:2004-07-27

    申请号:US10367270

    申请日:2003-02-15

    CPC classification number: A63H19/24

    Abstract: A system and method for detecting the presence or absence of cars, locomotives, or obstructions which may occupy a particular section of track of a model railroad. Digital Command Control signals are used to provide the excitation voltage needed to perform a measurement of the capacitance of an unoccupied section of track. Deviations from this unoccupied capacitance are then measured to indicate occupancy.

    Abstract translation: 用于检测可能占据模型铁路的轨道的特定部分的汽车,机车或障碍物的存在或不存在的系统和方法。 数字命令控制信号用于提供执行轨道未占用部分的电容测量所需的激励电压。 然后测量与该未占用电容的偏差以指示占用。

    Field addressed displays using charge discharging in conjunction with charge retaining island structures
    42.
    发明授权
    Field addressed displays using charge discharging in conjunction with charge retaining island structures 有权
    使用电荷放电与电荷保持岛结构相结合的现场寻址显示

    公开(公告)号:US06456272B1

    公开(公告)日:2002-09-24

    申请号:US09438894

    申请日:1999-11-12

    Abstract: The invention is an electric reusable paper sheet that uses a pattern of conductive charge-retaining islands on the outward-facing side of the first of two thin layers used to encapsulate a Electric reusable paper substrate which interact with conductive areas in the encapsulating sheet. The second encapsulating layer may also coated with a conductive material, or made of a conductive material, and may or may not be patterned. The Electric reusable paper substrate and two encapsulating layers comprise a sheet of Gyricon electric reusable paper on which images can be written and erased repeatedly. The patterned charge-retaining islands of the first encapsulating layer receive electric charges from an external charge-transfer device. After the charge-transfer device is removed, the conductive, charge-retaining islands hold electric charge, creating an electric field in the electric reusable paper sufficient to cause an image change.

    Abstract translation: 本发明是一种电可重复使用的纸张,其使用在两个薄层中的第一个薄膜的面向外侧的导电电荷保持岛的图案,该两个薄层用于封装与封装片中的导电区域相互作用的电可重复使用的纸基材。 第二封装层也可以用导电材料涂覆,或由导电材料制成,并且可以或可以不图案化。 电可重复使用的纸基材和两个封装层包括一张可重复写入和擦除图像的Gyricon电再利用纸。 第一封装层的图案化电荷保持岛接收来自外部电荷转移装置的电荷。 在去除电荷转移装置之后,导电的电荷保持岛保持电荷,在电可重复使用的纸中产生足以引起图像变化的电场。

    Charge retention islands for electric paper and applications thereof
    43.
    发明授权
    Charge retention islands for electric paper and applications thereof 失效
    电纸的电荷保持岛及其应用

    公开(公告)号:US06222513B1

    公开(公告)日:2001-04-24

    申请号:US09037767

    申请日:1998-03-10

    CPC classification number: G02B26/026 G09F9/372

    Abstract: The invention is an electric paper sheet that uses a pattern of conductive charge-retaining islands on the outward-facing side of the first of two thin layers used to encapsulate a Gyricon sheet. The second encapsulating layer may also coated with a conductive material, or made of a conductive material, and may or may not be patterned. The Gyricon sheet and two encapsulating layers comprise a sheet of Gyricon electric paper on which images can be written and erased repeatedly. The patterned charge-retaining islands of the first encapsulating layer receive electric charges from an external charge-transfer device. After the charge-transfer device is removed, the conductive, charge-retaining islands hold electric charge, creating an electric field in the electric paper sufficient to cause an image change.

    Abstract translation: 本发明是一种电纸板,其使用用于封装Gyricon片的两个薄层中的第一个薄膜的向外侧的导电电荷保持岛的图案。 第二封装层也可以用导电材料涂覆,或由导电材料制成,并且可以或可以不图案化。 Gyricon片和两个封装层包括一张Gyricon电纸,其上可以重复地写入和擦除图像。 第一封装层的图案化电荷保持岛接收来自外部电荷转移装置的电荷。 在去除电荷转移装置之后,导电的电荷保持岛保持电荷,从而在电纸中产生足以引起图像变化的电场。

    Method and apparatus for fabricating very small two-color balls for a
twisting ball display
    44.
    发明授权
    Method and apparatus for fabricating very small two-color balls for a twisting ball display 失效
    用于制造用于扭转球显示器的非常小的双色球的方法和装置

    公开(公告)号:US5900192A

    公开(公告)日:1999-05-04

    申请号:US5372

    申请日:1998-01-09

    CPC classification number: B01J2/04 B29B9/10 G02B26/026 G09F9/372

    Abstract: A bichromal ball includes a first hemisphere. The first hemisphere includes a first pigment having a first color and a first polarity. The first pigment is added to a carrier fluid and polymer mixture during formation of the bichromal ball. A second hemisphere includes a second pigment having a second color and a second polarity. The second pigment is added to the carrier fluid and polymer mixture during formation of the bichromal ball. The carrier fluid and polymer mixture have a lower viscosity than the polymer alone. The carrier fluid is substantially removed after the first and second hemispheres are formed. The polymer is left along with the first and second pigments which form the bichromal ball. A diameter of the bichromal ball is reduced after the carrier fluid is substantially removed.

    Abstract translation: 双色球包括第一个半球。 第一半球包括具有第一颜色和第一极性的第一颜料。 在形成双色球期间将第一种颜料加入到载体流体和聚合物混合物中。 第二半球包括具有第二颜色和第二极性的第二颜料。 在形成双色球期间将第二种颜料加入到载体流体和聚合物混合物中。 载体流体和聚合物混合物的粘度低于单独的聚合物。 在形成第一和第二半球之后基本上移除载体流体。 聚合物与形成双色球的第一和第二颜料一起留下。 在显着除去载体流体之后,双重球的直径减小。

    Phase controlled synchronization for direct sequence spread-spectrum
communication systems
    46.
    发明授权
    Phase controlled synchronization for direct sequence spread-spectrum communication systems 失效
    直接序列扩频通信系统的相位控制同步

    公开(公告)号:US5101417A

    公开(公告)日:1992-03-31

    申请号:US546456

    申请日:1990-06-29

    CPC classification number: H04B1/7075 H04B1/70755

    Abstract: A receiver for a direct sequence spread-spectrum communication system of the type in which a transmitter mixes a clocked pseudo-random sequence with a modulated carrier for spreading the carrier energy across a wide band of frequencies, comprises a resident clock-driven pseudo-random code generator for locally generating an essentially identical, spectrum despreading code sequence; means for clocking the resident code generator at a nominal frequency which is offset in a predetermined sense from the clock frequency of the transmitted code sequence such that the phase of the locally generated code sequence tends to slide in one direction with respect to the phase of the transmitted code sequence; detection means for determining whether the locally generated and the transmitted code sequence are phase aligned or misaligned and for sensing their actual, incipient and/or predicted departures from a phase aligned state, and phase control means for adjusting the clock frequency for the resident code generator whenever such a departure is sensed, thereby shifting the phase of the locally generated code sequence in the opposite direction with respect to the transmitted code sequence by an amount which tends to restore the two code sequences to a phase aligned state.

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