H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 5/208 (2006.01) H04N 9/64 (2006.01)
Patent
CA 2284924
A contour emphasizing circuit provided with a Y-signal generating circuit (36) which generates luminance signals from digital R, G, and B signals, a contour extracting circuit (38) which extracts contour components from the generated Y-signal, a coefficient multiplying circuit (42) which outputs contour components for R, G, and B by multiplying the extracted contour components by coefficients Kr, Kg, and Kb, addition circuits (34r, 34g, and 34b), and a contour emphasis enable circuit (39) which controls the period for which contour components extracted by the extracting circuit (38) are supplied. Therefore, the contour emphasizing circuit prevents process errors in the peripheral portion of the screen of a display.
L'invention concerne un circuit d'accentuation de contours comprenant un circuit (36) générateur de signaux Y qui génère des signaux de luminance à partir de signaux numériques R, V et B, un circuit (38) d'extraction de contours qui extrait des composants de contours à partir de signaux Y générés, un circuit (42) multiplicateur de coefficient qui élabore des composants de contours pour les signaux R, V et B en multipliant les composants de contours extraits par des coefficients Kr, Kv et Kb, des circuits (34r, 34g, 34b) d'addition, un circuit (39) de validation de l'accentuation de contours qui régule la périodicité des composants de contours extraits par le circuit (38) d'extraction. Par conséquent, le circuit d'accentuation de contours empêche des erreurs de traitement dans la partie périphérique de l'écran de visualisation.
Kurita Masanori
Suzuki Susumu
Fujitsu General Limited
Gowling Lafleur Henderson Llp
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