| 摘要 |
PURPOSE:To attain very stable and highly accurate circuit operation by superimposing a prescribed current on a current flowing to a vertical deflection coil at each field and making a raster of an even number field coincident with that of an odd number of field. CONSTITUTION:In interlacing, the scanning line of an even number field and of an odd number field is shifted with eachother by H/2 field. Thus, when the rasters of an even or an odd number field are shifted upward or downward by 1/625 of the vertical amplitude, the scanning lines of both the fields are made coincident. A current source 10 is provided to supply a constant current to a vertical deflection yoke 11 so that the rasters of the even or odd number field are shifted and gives a constant current at each other field. |
