Apparatus for correcting vertical contours

• Main Authors: Terai, Katsumi, Okumura, Naoji, Nio, Yutaka, Tanaka, Kazuhito
• Format: Patent
• Language: English
• Published: 23.07.2002

The present invention relates to a vertical contour correcting device for a video signal utilized in a television receiver etc. An object is to provide a vertical contour correcting device for a video signal which reduces noise without deteriorating effect of the entire contour correction.A vertical contour correcting device (VCP) which corrects vertical contour components (Sv, Sv′) of a video signal (S) with a given quantity of correction (K) to enhance the vertical contour (Ev) of the video signal (S) comprises a vertical contour component extracting device () for detecting said vertical contour components (Sv, Sv′) from said video signal (S), a vertical contour component correlation detector () for detecting correlation between horizontally adjacent vertical contour components (Sb, Sb′, Sb′′) from said detected vertical contour components (Sv, Sv′), and a controller () for determining said quantity of correction (K) on the basis of said detected correlation (Sj), thereby varying the quantity of correction (K) in accordance with the correlation (Sj).