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318 条记录 (耗时 0.018 秒)

    Television tuner system
    191.
    发明授权
    Television tuner system 失效
    电视调谐器系统

    公开(公告)号：US06400419B1

    公开(公告)日：2002-06-04

    申请号：US09164558

    申请日：1998-10-01

    申请人： Masaki Yamamoto

    发明人： Masaki Yamamoto

    IPC分类号： H04N550

    CPC分类号： H03J1/00 ,  H05K1/0216

    摘要： In a television tuner system, a printed board is disposed within a frame having a side plate. A tuner and an intermediate frequency circuit are disposed adjacent to each other on the printed board. The tuner has a mixer and a local oscillator. The intermediate frequency circuit includes at least a SAW filter having a plurality of terminals. A first ground conductor is formed between the tuner and the intermediate frequency circuit. A second ground conductor is formed at a peripheral edge of the printed board. The SAW filter is placed along the second ground conductor in such a manner that the terminals of the SAW filter are arranged substantially parallel to the side plate. The local oscillator is disposed substantially on a line extending from the arrangement of the terminals of the SAW filter. With this arrangement, the distance between the output terminals and the local oscillator is greater than that between the input terminal and the local oscillator. It is thus possible to inhibit local oscillation signals from being accidentally input into the output terminals of the SAW filter, which would otherwise cause the generation of interruption signals, and also to maintain the performance of the SAW filter by preserving its selectivity characteristics.

    摘要翻译： 在电视调谐器系统中，印刷电路板设置在具有侧板的框架内。 调谐器和中频电路被布置在印刷电路板上彼此相邻。 调谐器具有混频器和本地振荡器。 中频电路至少包括具有多个端子的SAW滤波器。 在调谐器和中频电路之间形成第一接地导体。 第二接地导体形成在印刷电路板的周边边缘处。 SAW滤波器沿着第二接地导体放置，使得SAW滤波器的端子基本上平行于侧板布置。 本地振荡器基本上设置在从SAW滤波器的端子的布置延伸的线上。 通过这种布置，输出端子和本地振荡器之间的距离大于输入端子和本地振荡器之间的距离。 因此可以抑制局部振荡信号被意外地输入到SAW滤波器的输出端子，否则会导致产生中断信号，并且还通过保持其选择性特性来保持SAW滤波器的性能。

    Ultra multi-pole connector
    197.
    发明授权
    Ultra multi-pole connector 失效
    超多极连接器

    公开(公告)号：US4780090A

    公开(公告)日：1988-10-25

    申请号：US66111

    申请日：1987-06-25

    申请人： Masaaki Sugiyama ,  Mitsugu Watanabe ,  Hideharu Hayashi ,  Yukio Nishio ,  Masaki Yamamoto

    发明人： Masaaki Sugiyama ,  Mitsugu Watanabe ,  Hideharu Hayashi ,  Yukio Nishio ,  Masaki Yamamoto

    IPC分类号： H01R13/629 ,  H01R13/514 ,  H01R13/631 ,  H01R13/64

    CPC分类号： H01R13/631 ,  H01R13/514

    摘要： An ultra multi-pole connector includes a plurality of small size multi-pole connectors each having a connector housing which has a plurality of terminals connected to a plurality of wires therein and engagement shoulders projecting from the upper portion of the connector housing, and a casing having a plurality of hollow sections to which said small size multi-pole connectors are mounted, respectively, and each of said hollow section having an engagement members, thereby the small size multi-pole connectors can be displaceably mounted in the hollow sections by engagement of the engagement shoulders and the engagement members.

    摘要翻译： 一种超多极连接器包括多个小型多极连接器，每个连接器壳体具有连接到多个电线的多个端子和从连接器壳体的上部突出的接合肩部， 具有分别安装有所述小尺寸多极连接器的多个中空部分，并且每个所述中空部分具有接合部件，由此小尺寸多极连接器可以通过接合的方式可移动地安装在中空部分中 参与肩膀和参与成员。