Video signal correction system

H - Electricity – 04 – N

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H04N 9/64 (2006.01) H04N 5/20 (2006.01) H04N 9/68 (2006.01) H04N 9/77 (2006.01)

Patent

CA 2086777

A novel video signal correction system is disclosed, in which an average picture level detection circuit detects the average picture level (APL) of a luminance signal, and a coefficient calculation circuit calculates the amount of correction by the APL circuit. An adder adds an APL-corrected signal to a corrected luminance signal. A limiter circuit, on the other hand, limits the lower limit level of an input luminance signal. A divider circuit divides an output signal of the adder by an output signal of the limiter circuit, and the result is used to correct an input color signal. The color signal is thus capable of being corrected in accordance with the APL while at the same time preventing excessive correction of the color signal with a low brightness input.

Nouveau système de correction de signal, dans lequel un circuit de détection de niveau moyen de luminance (NML) détecte le niveau moyen de luminance d'un signal, et un circuit de calcul de coefficients calcule la valeur de correction par le circuit NML. Un circuit d'addition additionne un signal corrigé par le circuit NML à un signal de luminance corrigé. Un circuit limiteur, par contre, limite le seuil inférieur d'un signal de luminance d'entrée. Un circuit diviseur divise un signal de sortie du circuit d'addition par un signal de sortie du circuit limiteur, et le résultat sert à corriger un signal de couleur d'entrée. Il est ainsi possible de corriger le signal de couleur en fonction du NML tout en empêchant la correction excessive du signal de couleur au moyen d'une faible luminosité d'entrée.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Video signal correction system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Video signal correction system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video signal correction system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1673415

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.