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1. WO2000042594 - METHOD AND APPARATUS FOR IMPLEMENTING DYNAMIC DISPLAY MEMORY

Publication Number WO/2000/042594
Publication Date 20.07.2000
International Application No. PCT/US2000/000776
International Filing Date 12.01.2000
Chapter 2 Demand Filed 10.08.2000
IPC
G09G 5/39 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
5Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
36characterised by the display of individual graphic patterns using a bit-mapped memory
39Control of the bit-mapped memory
CPC
G09G 2360/122
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2360Aspects of the architecture of display systems
12Frame memory handling
122Tiling
G09G 5/363
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
5Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
36characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
363Graphics controllers
G09G 5/393
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
5Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
36characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
39Control of the bit-mapped memory
393Arrangements for updating the contents of the bit-mapped memory
Applicants
  • INTEL CORPORATION [US/US]; 2200 Mission College Boulevard Santa Clara, CA 95052, US (AllExceptUS)
  • DOYLE, Peter [US/US]; US (UsOnly)
  • SREENIVAS, Aditya [IN/US]; US (UsOnly)
Inventors
  • DOYLE, Peter; US
  • SREENIVAS, Aditya; US
Agents
  • MILLIKEN, Darren, J. ; Blakely, Sokoloff, Taylor & Zafman LLP 7th floor 12400 Wilshire Boulevard Los Angeles, CA 90025, US
Priority Data
09/231,60915.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR IMPLEMENTING DYNAMIC DISPLAY MEMORY
(FR) PROCEDE ET DISPOSITIF PERMETTANT DE METTRE EN OEUVRE UNE MEMOIRE D'AFFICHAGE DYNAMIQUE
Abstract
(EN)
A method and apparatus for implementing a dynamic display memory is provided. A memory control hub suitable for interposition between a central processor and a memory includes a graphics memory control component. The graphics memory control component determines whether operands accessed by the central processor are graphics operands. If so, the graphics memory control component transforms the virtual address supplied by the central processor to a system address suitable for use in locating the graphics operand in the memory. In one embodiment, the graphics control component maintains a graphics translation table in the memory and utilizes the graphics translation table in transforming virtual addresses to system addresses. Furthermore, in one embodiment, the graphics control component reorders the addresses of the graphics operands to optimize for performance memory accesses by a graphics device.
(FR)
L'invention concerne un procédé et un dispositif permettant la mise en oeuvre d'une mémoire d'affichage dynamique. Un pivot de commande mémoire qui peut être interposé entre un processeur central et une mémoire comprend une composante commande de mémoire graphique. Cette composante commande de mémoire graphique détermine si les opérandes sollicitées par le processeur central sont des opérandes graphiques. Si tel est le cas, la composante commande de mémoire graphique transforme l'adresse virtuelle fournie par le processeur central en une adresse système qui peut servir à localiser l'opérande graphique dans la mémoire. Dans un mode de réalisation, la composante commande graphique assure la mise à jour d'une table de traduction graphique dans la mémoire et utilise cette table pour convertir les adresses virtuelles en adresses système. Dans un autre mode de réalisation, la composante commande graphique reclasse en outre les adresses des opérandes graphiques afin d'optimiser les accès d'un dispositif graphique à la mémoire et d'améliorer ainsi la performance.
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