PURPOSE:To actively remove the distortion easy to be seen visually and to obtain a video signal excellent in a visual characteristic by providing a means to execute the weighting to cancel the waveform component remoter than the waveform distortion component close to a main signal. CONSTITUTION:The gain of coefficient multipliers CM-C0 and C1-CN to supply the output of respective delaying elements T of a transversal filter 23 is controlled by the value corresponding from a tap gain memory 28. At a subtractor 27, a residual waveform distortion series {eK} is obtained. {eK} and a coefficient group {aK} from a weighting generating circuit 32 are synchronized, inputted to a multiplier 31 and a corrected waveform distortion component [eK]' is obtained. The coefficient group {aK} becomes larger as it is remote from a main signal. A waveform distortion detecting circuit 30 executes the arithmetic processing with a reference signal series {xk} before the resampled waveform equalization and a corrected waveform distortion series {eK}' and a tap gain correcting circuit 29 corrects the corresponding data (gain) of the tap gain memory 28 with the output of the waveform distortion detecting circuit 30.
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