| 摘要 |
PURPOSE:To copy a reproduced output similarly as at a normal state by inverting the direction of phase shift of a low frequency converting a chrominance signal reproduced at the special reproduction at each other field. CONSTITUTION:A horizontal synchronizing signal H and a vertical synchronizing signal V extracted from a luminance signal Y are frequency-devided by 1/2- frequency-dividers 3, 4 at the special reproduction, the logical product with the original signals is operated at AND circuits 5, 6, and then reference signals Hs, Vs are outputted. A switch 7 is controlled by the reference signal Vs, the direction of phase shift is designated at each other field from the reproduced field so as to output the reference signal Hs. A switch 8 is controlled by the reference signal Hs outputted from the switch 7 at the designated field, the phase of the low frequency converting chrominance signal CL reproduced at the field is inverted via an inverting device 9 at each other horizontal scanning period, and the signal is outputted while the direction of phase shift is inverted. |
