Image generating apparatus with fifo memory and cache memory

Details Image generating apparatus with fifo memory and cache memory Image generating apparatus with fifo memory and cache memory

G - Physics

06

T

G06T 1/00 (2006.01) G06T 1/20 (2006.01) G06T 1/60 (2006.01) G09G 5/36 (2006.01) G09G 5/393 (2006.01)

Patent

CA 2216442

Data from a main part of a drawing engine 101 is sent to and transiently stored in a first-in-first-out (FIFO) memory 102 for storage transiently therein and is supplied via an operating device 103 to a fast cache memory 104 where data exchange is carried out with a frame buffer 105. A cache controller 106 controls the cache memory 104 for pre-reading the contents of the FIFO memory 102 and collectively reading/writing data of the same page in the frame buffer 105 which is accessible at a high speed. This enables fast accessing using an inexpensive frame buffer to improve the drawing speed.

La présente invention consiste à envoyer à une mémoire à pile en liste directe ou "FIFO" (102), des données issues du module principal (101) d'un moteur de dessin, à les y stocker temporairement et à les envoyer à une antémémoire haute vitesse (104) via une unité arithmétique (103). Les données sont transmises entre cette antémémoire (104) et un tampon de trame (105). Un contrôleur d'antémémoire (106), qui assure la prélecture du contenu de la mémoire FIFO (102), gère l'antémémoire (104) de façon que toutes les données d'une même page soient stockées dans le même tampon de trame (105), ce qui autorise des accès, des lectures et des écritures à grande vitesse. Grâce à son tampon de trame économique, cette architecture permet des accès à grande vitesse et améliore la vitesse de dessin.

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