| 摘要 |
PURPOSE:To improve the picture quality by adding a chrominance signal component subject to white balance to the original output and allowing the modulation of the multiplexed chrominance signal component to be decreased at a coloring section to correct a false signal generated by a folded distortion. CONSTITUTION:A processing multiplying a coefficient (a) to an output signal is executed by adjusting the gain of the output at a resistor 304 so that a color difference signal Mg+Cy-a(G+Ye) of nHth line and a color difference signal Mg+Ye-a(G+Cy) of (n+1)Hth line are zeroed at a white level of an object image. An output of 1H switching circuits 305a, 305b is added by an adder 315, a signal delayed by one picture element' share at a delay circuit 306 is subtracted at a subtractor 316 to obtain a color difference signal component. The color difference signal component is multiplied by (k) (0<=k<=1/2) at a coefficient multiplier 317, it is added to the original output at an adder 318 as a correction amount to decrease the modulation of the coloring section. Thus, the shift of spatial phase at each line is corrected and the ruggedness of the boundary part of color is smoothed. |
