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    Convergence correction circuit for cathode ray tube
    2.
    发明公开
    Convergence correction circuit for cathode ray tube 失效
    Schaltung zur Korrektur der KonvergenzfürKathodenstrahlröhre。

    公开(公告)号：EP0590934A1

    公开(公告)日：1994-04-06

    申请号：EP93307675.4

    申请日：1993-09-28

    申请人： SONY CORPORATION

    发明人： Iguchi, Yukinobu, c/o SONY CORPORATION ,  Hosokawa, Hiromu, c/o SONY CORPORATION ,  Utsumi, Ichiro, c/o SONY CORPORATION ,  Okano, Nobuya, c/o SONY CORPORATION ,  Saito, Tsunenari, c/o SONY CORPORATION

    IPC分类号： H04N9/28 ,  H01J29/51

    CPC分类号： H04N9/28 ,  H01J29/51

    摘要： A dynamic convergence apparatus of a simplified arrangement can reduce a distortion of a beam spot on a periphery of a picture screen and improve a focusing, wherein a parallel circuit of a high resistance value resistor (R) and a diode (D) is connected between low voltage side electrode plates (3), (4) and high voltage side electrode plates (1), (2) to which an anode voltage (HV) is applied, a capacitor (C) is formed by coating a conductive layer on the inside and outside of a tube envelope of a color CRT while glass of the tube envelope is used as a dielectric material, and a convergence voltage which results from adding a vertical parabolic wave voltage to the horizontal blanking period of a modulated voltage provided by amplitude-modulating a DC voltage very slightly lower than the anode voltage (HV) by horizontal and vertical parabolic waves is commonly supplied from one end side (outside of the tube envelope) of the capacitor (C) to the low voltage side electrode plates (3), (4).

    摘要翻译： 简化布置的动态会聚装置可以减少画面周边上的光斑的畸变并改善聚焦，其中高电阻值电阻（R）和二极管（D）的并联电路连接在 低电压侧电极板（3），（4）和施加了阳极电压（HV）的高压侧电极板（1），（2），电容器（C） 使用管外壳的玻璃作为电介质材料的彩色CRT的管壳的内部和外部，以及通过将由垂直抛物线波形电压提供的调制电压的水平消隐周期加上垂直抛物线波形而产生的会聚电压， 通过水平和垂直抛物线波调制非常略低于阳极电压（HV）的直流电压通常从电容器（C）的一端（管外）向低压侧电极板（3）提供， ，（4）。