System for managing tiled images using multiple resolutions

Details System for managing tiled images using multiple resolutions System for managing tiled images using multiple resolutions

1991-04-30

1993-11-16

Shaw, Dale M.

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

345201, G06F 1520

Patent

active

052631362

ABSTRACT:
An image memory management system for tiled images. The system defines an address space for a virtual memory that includes an image data cache and a disk. An image stack for each source image is stored as a full resolution image and a set of lower-resolution subimages. Each tile of an image may exist in one or more of five different states as follows: uncompressed and resident in the image data cache, compressed and resident in the image data cache, uncompressed and resident on disk, compressed and resident on disk and not loaded but re-creatable using data from higher-resolution image tiles.

REFERENCES:
patent: Re31200 (1983-04-01), Sukonick et al.
patent: 4878183 (1989-10-01), Ewart
patent: 4920504 (1990-04-01), Sawada et al.
patent: 4951230 (1990-08-01), Dalrymple et al.
patent: 5020003 (1991-05-01), Moshenberg
patent: 5150462 (1992-09-01), Takeda et al.

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