System and method for managing compressed graphic image data

Details System and method for managing compressed graphic image data System and method for managing compressed graphic image data

2007-07-17

2007-07-17

Tung, Kee M. (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics display memory system

For storing compressed data

C345S553000, C345S530000

Reexamination Certificate

active

09987954

ABSTRACT:
Compressed graphic image data files, such as Compressed ARC (Arc-second Raster Chart/map) Digitized Raster Graphics (CADRG) map files for a region of interest, are stored in blocks of memory (nodes) preferably arranged as a linked list. Portions of files containing data for an area of interest including an image of interest are decompressed before the data are sent to a frame buffer for display. Nodes that do not contain requested data are flagged as unused, but not deallocated, making the data in such nodes available for use or replacement.

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