Method and apparatus for correcting image errors caused by residual
magnetism in a picture tube
    1.
    发明授权
    Method and apparatus for correcting image errors caused by residual magnetism in a picture tube 失效
    用于校正由显像管中的残余磁性引起的图像误差的方法和装置

    公开(公告)号:US6107743A

    公开(公告)日:2000-08-22

    申请号:US196729

    申请日:1998-11-20

    IPC分类号: H04N9/29 H01J29/06

    CPC分类号: H04N9/29

    摘要: The invention relates to a method and apparatus for correcting image errors caused by residual magnetism in monitors and other such display devices based on picture tubes. The method according to the invention is based on the removal of residual magnetism by means of an alternating damped magnetic field. In the method, the internal and external structures in the neck part (11) of a picture tube (10) are subjected to an alternating damped magnetic field produced by means of a coil (45).

    摘要翻译: 本发明涉及一种用于校正由监视器和其他这样的基于显像管的显示装置的残余磁性引起的图像误差的方法和装置。 根据本发明的方法是基于通过交变阻尼磁场去除残余磁性的方法。 在该方法中,显像管(10)的颈部(11)中的内部和外部结构经受由线圈(45)产生的交变阻尼磁场。