Color temperature selection circuitry having color matrix...

Details Color temperature selection circuitry having color matrix... Color temperature selection circuitry having color matrix...

H - Electricity

04

N

H04N 9/73 (2006.01)

Patent

CA 2112996

In a television receiver including a feature allowing a user to select a color temperature at which whites will be produced on a display screen, circuitry is provided for altering the gain of the red and blue kine driver stages and simultaneously automatically altering the gain of the R-Y and B-Y color difference signal amplifier to correct for errors which would otherwise be introduced by adversely altering the B-Y / R-Y ratio.

Poste de téléviseur muni d'une fonction permettant à l'utilisateur de sélectionner une température de couleur qui produira des blancs sur un écran de visualisation. Des circuits sont prévus pour modifier le gain des étages d'attaque des faisceaux rouge et bleu tout en modifiant automatiquement et simultanément le gain de l'amplificateur des signaux de différences de couleurs R-Y et B-Y afin de corriger les erreurs qui se produiraient autrement par la modification erronée du rapport B-Y/R-Y.

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