Magnetic field generators for use in electromagnetic focusing type
cathode ray tubes
    1.
    发明授权
    Magnetic field generators for use in electromagnetic focusing type cathode ray tubes 失效
    用于电磁聚焦型阴极射线管的磁场发生器

    公开(公告)号:US4376272A

    公开(公告)日:1983-03-08

    申请号:US319797

    申请日:1981-11-09

    IPC分类号: H01J29/64 H01J29/68 H01F3/12

    CPC分类号: H01J29/68

    摘要: In a magnetic field generator mounted about a neck of a cathode ray tube for focusing an electron beam and made up of a permanent magnet, a magnetic field adjusting mechanism for adjusting field intensity produced by the permanent magnet and a magnetic member adapted to compensate for a temperature characteristic of the permanent magnet, the temperature characteristic compensating member is located at a position not affected by magnetic flux adjusted by the magnetic field adjusting mechanism.

    摘要翻译: 在围绕用于聚焦电子束并由永久磁铁组成的阴极射线管颈部的磁场发生器中,用于调节由永磁体产生的场强的磁场调节机构和适于补偿永磁体的磁性部件 永磁体的温度特性,温度特性补偿部件位于不受磁场调整机构调整的磁通量影响的位置。

    Electromagnetic focusing cathode-ray tube
    2.
    发明授权
    Electromagnetic focusing cathode-ray tube 失效
    电磁聚焦阴极射线管

    公开(公告)号:US4439710A

    公开(公告)日:1984-03-27

    申请号:US279598

    申请日:1981-07-01

    IPC分类号: H01J29/68 H01J29/64

    CPC分类号: H01J29/68

    摘要: An electromagnetic focusing cathode-ray tube in which plural pairs of magnetic material members are arranged within the tube along the tube axis, the magnetic material members in each pair are disposed to oppose each other in the direction of the tube axis with a gap defined therebetween, and the plural magnetic material member pairs and one or more permanent magnet disposed internally or externally of the tube are combined such that magnetic focusing fields having their senses or directions opposite to each other in the direction of the tube axis are formed at the respective gaps associated with the adjacent magnetic material pairs.

    摘要翻译: 一种电磁聚焦阴极射线管,其中多对磁性材料构件沿着管轴布置在管内,每对中的磁性材料构件沿着管轴方向彼此相对设置,间隔开间隙 并且多个磁性材料构件对和设置在管的内部或外部的一个或多个永磁体被组合,使得在其各个间隙处形成具有彼此在管轴方向上相反的感测或方向的磁性聚焦场 与相邻的磁性材料对相关联。

    Raster scan display for reducing vertical moire phenomenon
    6.
    发明授权
    Raster scan display for reducing vertical moire phenomenon 失效
    栅格扫描显示,减少垂直波纹现象

    公开(公告)号:US5977936A

    公开(公告)日:1999-11-02

    申请号:US705657

    申请日:1996-08-30

    CPC分类号: H04N3/233

    摘要: A display is disclosed for reducing a vertical moire phenomenon of the display with a simple circuit and without causing noises on an image plane. The display comprises a moire cancelling amplifier for flowing a vertical moire cancellation current at a frequency of 1/n of a vertical deflection frequency to a vertical deflection coil of the display, a frequency divider for generating the frequency of 1/n of the vertical deflection frequency, a vertical oscillator, and a vertical output circuit.

    摘要翻译: 公开了一种用于通过简单电路减少显示器的垂直莫尔现象并且在图像平面上不产生噪声的显示器。 显示器包括用于将垂直偏转频率的1 / n的垂直莫尔条纹消除电流流向显示器的垂直偏转线圈的莫尔消除放大器,用于产生垂直偏转的1 / n的频率的分频器 频率,垂直振荡器和垂直输出电路。