| 摘要 |
PURPOSE:To prevent the color shift on screen, by producing a correction voltage automatically even if the deflection voltage is fluctuated, through the correction of a deflection voltage applied to other pickup tube according to mechanical error of the deflection plate, to the deflection voltage applied to the pickup tube taking one pickup tube as the reference. CONSTITUTION:Horizontal and vertical deflection voltages VH+, VH-, VV+, VV- are respectivel applied to input terminals 1, 2 and 3, 4, the voltage is split through resistors and supplied to a compensation voltage generating circuit 9 via transistors TRs Q1-Q4. A deflection voltage is applied to a G signal pickup tube from output terminals 10-13 and inputted to an R channel horizontal compensation circuit 14, R channel vertical compensation circuit 15, B channel horizontal and vertical correction circuits 16, 17. The deflection voltage corrected with a compensation voltage ouputted from a circuit 9 at circuits 14-17 is inputted to an R signal pickup tube and a B signal pickup tube from output terminal 18-25, and if the deflection voltage is fluctuated, the compensation voltage is automatically generated to prevent the color shift of pickup picture. |
