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    • 2. 发明申请
    • OPTICAL DISC DRIVE DEVICE AND INTERCONNECTION STRUCTURE
    • 光盘驱动器和互连结构
    • US20120213050A1
    • 2012-08-23
    • US13398175
    • 2012-02-16
    • Ryo MATSUBARAHideto SogaTomio YamamotoYasuyuki Torii
    • Ryo MATSUBARAHideto SogaTomio YamamotoYasuyuki Torii
    • G11B33/02H05K5/00
    • G11B33/1493G11B33/022
    • Disclosed is an optical disc drive device having a metallic exterior casing and an internal unit to be housed in the exterior casing, the internal unit further including an optical pickup unit for performing recording or reproduction of information signals on an optical disc, and a printed wiring substrate on which a connector electrically connected to the optical pickup unit and serving for transmission and reception of electrical signals from and to external electronic equipment is mounted, wherein the exterior casing has an opening for allowing the connector to be exposed outside, the printed wiring substrate has a ground pattern formed to surround the connector, and a fringe portion of the opening of the exterior casing and the ground pattern are in electrical contact with each other. Thus, radiation noise from around wiring lines contained in the optical disc drive device or the like is reduced.
    • 公开了一种光盘驱动装置,其具有金属外壳和内部单元以容纳在外壳中,内部单元还包括用于在光盘上执行信息信号的记录或再现的光学拾取单元和印刷布线 其上安装有电连接到光学拾取单元并且用于从外部电子设备发送和接收电信号的连接器的基板,其中外壳具有用于允许连接器暴露在外部的开口,印刷布线基板 具有形成为围绕连接器的接地图案,并且外部壳体的开口的边缘部分和接地图案彼此电接触。 因此,减少了包含在光盘驱动装置等中的绕线周围的辐射噪声。
    • 6. 发明申请
    • Common mode radiation inhibit circuit and electronic equipment
    • 共模辐射抑制电路和电子设备
    • US20060119449A1
    • 2006-06-08
    • US11294031
    • 2005-12-05
    • Hirotsugu FusayasuShin-ichi TanimotoSeiji HamadaRyo Matsubara
    • Hirotsugu FusayasuShin-ichi TanimotoSeiji HamadaRyo Matsubara
    • H04B3/28
    • H04B3/28
    • To provide a common mode radiation inhibit circuit for a differential transmission line which can inhibit quadratic common mode radiation by ensuring a continuity of grand level at a point of change of a signal grand, including a differential transmission line which is constituted of a pair of signal wiring, and transmits differential signals, signal grounds which are arranged along the differential transmission line, and each have a change point on its way, a transformer, and a reference ground, wherein a primary side of the transformer is connected between an electric midpoint of the pair of signal wiring, and the signal ground at one side of the front and back of the change point of the signal grounds, wherein the secondary side of the transformer is connected between the electric midpoint of the pair of signal wiring and the signal ground at another side of the front and back of the change point, and wherein the reference ground is connected to a point which becomes a neutral sheet of the primary side of the transformer and a point which becomes a neutral sheet of the secondary side of the transformer.
    • 为了提供一种用于差分传输线的共模辐射抑制电路,其可以通过确保在信号grand的变化点处的大电平的连续性来抑制二次共模辐射,包括由一对信号构成的差分传输线 布线,并且发送差分信号,沿着差动传输线布置的信号接地,并且每个具有在其路上的变化点,变压器和参考接地,其中变压器的初级侧连接在 信号线的一对信号线和信号接地的变化点的前后一侧的信号地,其中变压器的次级侧连接在一对信号线的电中点与信号地之间 在变化点的前后的另一侧,并且其中参考地连接到成为中性片的点 的变压器的初级侧和成为变压器的次级侧的中性片的点。