Motion detection circuit for high definition television picture signal based on the muse system

摘要: A motion detection circuit within MUSE decoder for reproducing a high definition television picture signal from obtains one-interframe differential and preferably one-interfield an interframe interpolation signal. The signals are passed through vertical filter (5) to limit the frequency horizontal (4) or filters obtain low component judgment judges reliability of on basis levels peak values thereof, selector selects appropriate in accordance with judgment. Horizontal width extenders absolute value output circuits may be provided improve performance. selected is normalized by sensitivity converter (6) edge detector (3), then isolated points remover (11) removes noise components correlation