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    • 8. 发明授权
    • Linearity compensation method and variable magnetic field strength
linearity compensation apparatus for a multi-scanning monitor
    • 用于多扫描监视器的线性补偿方法和可变磁场强度线性补偿装置
    • US5268618A
    • 1993-12-07
    • US837049
    • 1992-02-18
    • James Chen
    • James Chen
    • G09G1/04H01H1/00
    • G09G1/04
    • A linearity compensation apparatus for a multi-scanning monitor which has a magnetic deflection-type cathode ray tube includes a linearity coil to be connected in series with the deflection coil of a horizontal deflection system of the multi-scanning monitor. An electromagnet has a core connected to the linearity coil and a line coil wound on the core thereof. A current control circuit controls the amount of current flowing through the line coil of the electromagnet so as to correspond with the horizontal scanning frequency from an external display adapter, thereby varying the magnetic field strength of the electromagnet in order to vary automatically the relationship between the inductance and the current flowing through the linearity coil in accordance with the magnitude of the horizontal scanning frequency.
    • 具有磁偏转型阴极射线管的多扫描监视器的线性补偿装置包括与多扫描监视器的水平偏转系统的偏转线圈串联连接的线性线圈。 电磁铁具有连接到线性线圈的芯和缠绕在其芯上的线圈线圈。 电流控制电路控制流过电磁线圈线圈的电流量,以便与来自外部显示适配器的水平扫描频率相对应,从而改变电磁铁的磁场强度,以便自动地改变电磁铁 电感和根据水平扫描频率的大小流过线性线圈的电流。