Frame buffer organization and control for real-time image...

G - Physics – 09 – G

Patent

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G09G 5/22 (2006.01) G09G 5/02 (2006.01)

Patent

CA 2067418

A display system is described which includes storage for receiving a compressed pixel image manifesting at least a pair of encoded colors and a bit MASK that defines which pixels of a pixel subset of the pixel image receive one of the colors. The system comprises a plurality of memory modules. The pixels in the subset are interleaved in the memory modules. A generator is provided for applying signals to cause data to be written into each of modules in parallel. Register means are provided for applying data manifesting the encoded colors to the modules. Control apparatus is responsive to the MASK bits for controlling the generator to write the encoded color data, in parallel and in a single memory cycle, into all pixel positions of the subset that are designated for the color(s) by MASK bit position values.

L'invention est un système d'affichage doté d'une mémoire servant à stocker une image comprimée ayant au moins deux couleurs codées et un masque qui détermine quels pixels d'un sous-ensemble de pixels de l'image vont recevoir l'une de ces couleurs. Le système de l'invention comporte plusieurs modules de mémoire. Les pixels du sous-ensemble en cause sont entrelacés dans les modules de mémoire. Des données sont enregistrées en parallèle dans ces modules sous l'effet d'un générateur de signaux. Des registres transmettent à ces modules les données correspondant aux couleurs codées. Un dispositif de contrôle réagit à la réception des bits transmis par le masque en commandant au générateur d'enregistrer en parallèle dans un même cycle de base les données des couleurs codées, cet enregistrement devant être effectué à toutes les positions des pixels du sous-ensemble en cause qui sont attribuées à la (aux) couleur(s) selon les bits transmis par le masque.

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