| 摘要 |
PURPOSE:To correct rotation, barrel distortion, and pin cushion distortion of a raster displayed on a screen surface of a cathode-ray tube. CONSTITUTION:At least a pair of mutually electrically connected flat coils 2 and 3 symmetric to the tube axis of a cathode-ray tube, are arranged in the vicinity of tip parts of a deflection yoke 1. A direct current or the like is impressed on the flat coils 2 and 3, and a magnetic field in the tube axis direction, a bipolar magnetic field or a rotating magnetic field or the like are generated. |
