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    Automatic clock de-skewing apparatus
    142.
    发明授权
    Automatic clock de-skewing apparatus 失效
    自动时钟偏移装置

    公开(公告)号：US4755704A

    公开(公告)日：1988-07-05

    申请号：US68285

    申请日：1987-06-30

    Applicant: Laurence P. Flora ,  Michael A. McCullough

    Inventor： Laurence P. Flora ,  Michael A. McCullough

    IPC: G06F1/10 ,  H03K19/003 ,  H05K1/02 ,  H05K3/42 ,  H03K5/13 ,  H03K5/159

    CPC classification number: H05K1/0248 ,  G06F1/10 ,  H03K19/00323 ,  H05K2201/09263 ,  H05K2201/09336 ,  H05K2201/10689 ,  H05K3/429

    Abstract: Apparatus for providing automatic clock de-skewing for a plurality of circuit boards of a data processing system. In a preferred embodiment, each circuit board is of multi-layer construction and contains a clock distribution chip which includes on-chip automatic clock de-skewing circuitry for providing de-skewed clocks to other chips on the circuit board. In a preferred implementation of the clock de-skewing circuitry, feedback circuitry including a multi-tapped delay line and an accurate reference delay are employed in conjunction with a phase comparator for automatically providing de-skewed clocks at the clock outputs of the clock distribution chip. The accurate reference delay is advantageously provided by a strip transmission line formed in a conductive layer of the multi-layer board containing the chips.

    Abstract translation: 一种用于为数据处理系统的多个电路板提供自动时钟去偏移的装置。 在优选实施例中，每个电路板具有多层结构，并且包含时钟分配芯片，时钟分配芯片包括片上自动时钟去偏移电路，用于向电路板上的其它芯片提供去偏转的时钟。 在时钟去偏移电路的优选实施例中，包括多抽头延迟线和精确参考延迟的反馈电路与相位比较器结合使用，用于在时钟分配芯片的时钟输出处自动提供去偏斜时钟 。 有利的是，通过形成在包含芯片的多层板的导电层中的带状传输线来提供精确的参考延迟。

    Arrangement for connecting electrical circuits
    144.
    发明授权
    Arrangement for connecting electrical circuits 失效
    连接电路的安排

    公开(公告)号：US3895181A

    公开(公告)日：1975-07-15

    申请号：US49938474

    申请日：1974-08-21

    Applicant: HONEYWELL INF SYSTEMS

    Inventor： LAGRANGE JEAN-PAUL ,  DAVY GERALD ,  PROUIN JEAN-CLAUDE ,  LE GOVIC BERNARD ,  SANDOZ JEAN

    IPC: H05K1/00 ,  H05K1/02 ,  H05K3/42

    CPC classification number: H05K1/0228 ,  H05K1/0289 ,  H05K1/0296 ,  H05K1/0298 ,  H05K3/429 ,  H05K2201/044 ,  H05K2201/09236 ,  H05K2201/09263 ,  H05K2201/09609 ,  H05K2201/09945

    Abstract: An improved arrangement for connecting electrical circuits is formed by a plurality of superimposed insulating sheets joined together. At least one face of each of the sheets carries networks of conductive strips. The arrangement concludes linking members for electrically coupling conductive strips situated at different ones of said sheets and connecting members which connect the strips to the electrical circuits. The linking and connecting members are arranged in rows and columns defining corridors through which must pass the conductive strips. The general directions of the conductive strips are parallel to each other and to the corridors. At least one strip out of two is in the form of an offset line such that the average distance between two adjacent strips along their substantially parallel paths is greater than the distance which would separate them if they were entirely straight.

    Abstract translation: 通过连接在一起的多个叠加的绝缘片形成用于连接电路的改进布置。 每个片的至少一个面承载导电条的网络。 该布置总结了用于将位于不同的所述片材的导电条和用于将条连接到电路的连接部件的电连接的连接部件。 连接和连接构件被布置成行和列，其限定通道，通过该走廊必须通过导电条。 导电条的一般方向彼此平行并且与走廊相平行。 两个中的至少一个条带是偏移线的形式，使得沿着它们基本上平行的路径的两个相邻条之间的平均距离大于如果它们完全是直的则将分离它们的距离。

    Twisted pair flat conductor cable with means to equalize impedance and propagation velocity
    145.
    发明授权
    Twisted pair flat conductor cable with means to equalize impedance and propagation velocity 失效
    双向对平面导体电缆，具有均衡阻抗和传播速度

    公开(公告)号：US3761842A

    公开(公告)日：1973-09-25

    申请号：US3761842D

    申请日：1972-06-01

    Applicant: BELL TELEPHONE LABOR INC

    Inventor： BENTLEY GANDRUD W

    IPC: H01B7/08 ,  H01B11/00 ,  H04B3/32 ,  H05K1/02 ,  H05K1/11 ,  H01P3/02

    CPC classification number: H05K1/0228 ,  H01B7/08 ,  H01B11/00 ,  H04B3/32 ,  H05K1/0245 ,  H05K1/118 ,  H05K2201/09263 ,  H05K2201/097 ,  Y10S439/941

    Abstract: The use of so-called paired flat cable in interconnection work is attractive because of mass termination and rearrangement cost benefits. Flat cable has been supplied with differing twist lengths to meet crosstalk problems, but present such designs also exhibit an unacceptable difference from pair to pair of characteristic impedance and propagation velocity. The present invention eliminates these differences by recognizing that the capacitance at each crossover point of a twisted pair can be controlled by making a crossover smaller in area for pairs with shorter twist lengths and larger for those with longer twist lengths. The capacitance per unit length and, by the same mechanism, the impedance and propagation velocities are thus equalized among the pairs of the flat cable.

    Abstract translation: 所谓配对扁平电缆在互联工作中的使用是有吸引力的，因为质量终止和重新排列的成本优势。 已经提供扁平电缆具有不同的扭转长度以满足串扰问题，但是存在这样的设计也表现出对与特征阻抗和传播速度对之间的不可接受的差异。

    CIRCUIT BOARD
    149.
    发明公开
    CIRCUIT BOARD 审中-公开

    公开(公告)号：US20240008168A1

    公开(公告)日：2024-01-04

    申请号：US18225273

    申请日：2023-07-24

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Kosuke NISHIO

    IPC: H05K1/02 ,  H01P3/08

    CPC classification number: H05K1/0242 ,  H05K1/028 ,  H01P3/081 ,  H05K2201/09263 ,  H05K2201/09672 ,  H05K2201/0129 ,  H05K2201/09681

    Abstract: When viewed in an up-down direction, a first line-shaped reference conductor layer extends along a first signal conductor layer such that portions thereof overlap. When viewed in the up-down direction, the first line-shaped reference conductor layer meanders such that one or more first projecting portions projecting from the first signal conductor layer in a first orthogonal direction and one or more second projecting portions projecting from the first signal conductor layer in a second orthogonal direction alternate in a transmission direction. A section of at least one or more first pairs of projecting portions excluding both ends thereof is not connected to a conductor layer other than one or more of the one or more first projecting portions and one or more of the one or more second projecting portions included in the at least one or more first pairs of projecting portions.

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