Mechanism to mitigate color breakup artifacts in field...

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G09G 3/30 (2006.01) G09G 3/36 (2006.01) G09G 5/00 (2006.01) G09G 5/02 (2006.01) G09G 5/10 (2006.01)

Patent

CA 2608032

A mechanism for mitigating undesired color image breakup artifacts arising in display systems that exploit the principle of field sequential color generation. By suitably reducing the time interval during which image information strikes the moving retina, such that the differential position for the respective red, green, and blue components of the image falling upon the moving retina does not exceed the diameter of a retinal cone or rod, the cause of the breakup is negated and the image becomes unitary as expected: the eye sees the image as if all the components arrived at the same time. The truncation of light emission into shorter time frames necessitates a compensatory increase in imaging light intensity, such that the net amount of photonic flux striking the retina, averaged over time, remains unchanged. The mechanism can be applied to systems with discrete red, green, and blue sources as well as to color-wheel-based systems.

La présente invention concerne un mécanisme permettant d'atténuer des artefacts de rupture d'image en couleur indésirables survenant dans des systèmes d'affichage qui exploitent le principe de la génération de couleur séquentielle par champ. Afin de réduire convenablement l'intervalle de temps durant lequel des informations d'image frappent la rétine en mouvement, de sorte que la position différentielle des composantes respectives rouge, vert et bleu de l'image tombant sur la rétine en mouvement ne dépassent pas le diamètre d'un cône ou d'un bâtonnet de rétine, la cause de cette rupture est inversée et l'image devient unitaire comme prévu : l'oeil voit l'image comme si toutes les composantes arrivaient en même temps. Le découpage de l'émission lumineuse en trames temporelles plus courtes nécessite un accroissement compensatoire dans l'intensité lumineuse d'imagerie, de sorte que la quantité nette de flux photonique frappant la rétine, moyennée dans le temps, reste inchangée. Ce mécanisme peut être appliqué à des systèmes avec des sources rouge, vert et bleu distinctes ainsi que par des systèmes à base de roue de couleurs.

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