Contour emphasizing circuit

Details Contour emphasizing circuit Contour emphasizing circuit

H - Electricity

04

N

H04N 5/208 (2006.01) G09G 5/02 (2006.01) H04N 9/64 (2006.01) H04N 9/74 (2006.01) H04N 9/76 (2006.01)

Patent

CA 2284851

A contour emphasizing circuit which has a Y-signal generator (36) which generates a luminance signal from digital R, G and B signals, a contour extracting circuit (38) which extracts contour component from the generated Y signal, a factor multiplier (42) which multiplies the contour component by factors Kr, Kg and Kb and outputs contour components for R, G and B and contour adders (34r, 34g and 34b) which add the contour components for R, G and B to the R, G and B signals respectively and which emphasizes the contour for the digital R, G and B signals.

L'invention se rapporte à un circuit d'accentuation de contour, qui comprend les éléments suivants: un générateur (36) de signaux Y émettant un signal de luminance à partir des signaux numériques R, G et B; un circuit (38) d'extraction de contour, qui extrait le composant contour du signal généré Y; un multiplicateur (42) par facteurs, qui multiplie les composants contour par les facteurs Kr, Kg et Kb et qui émet des composants contour pour R, G et B; et des additionneurs (34r, 34g et 34b) de contour, qui ajoutent les composants contour pour R, G et B aux signaux R, G et B respectivement. Ledit circuit d'accentuation de contour accentue ainsi le contour pour les signaux numériques R, G et B.

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