Motion signal detecting circuit.

摘要

Disclosed is a motion signal detection circuit adapted to a video recording and/or reproducing apparatus having a frequency unfolding circuit for unfolding a luminance signal of a high frequency component included in the luminance signal of a low frequency component into an original frequency band, comprising a prefilter (10) for eliminating the folding carrier and sidebands thereof included in the video signal unfolded by the frequency unfolding circuit, a first comb filter (60) for filtering the output of the prefilter (10) to detect a motion signal, and an error compensation circuit for compensating the errors included in the motion signal output from the first comb filter (60). The error compensation circuit comprises a second comb filter (61) and means for logically operating the outputs of the first and second comb filters (60, 61).