Color data conversion using real and virtual address spaces

Details Color data conversion using real and virtual address spaces Color data conversion using real and virtual address spaces

1995-12-13

1998-04-28

Jankus, Almis R.

Computer graphics processing and selective visual display system

Computer graphics processing

Graph generating

G06T 1100

Patent

active

057451192

ABSTRACT:
A method and system for accessing image data in a plurality of different color formats. The image data are stored in a system memory (120) in one of the color formats. The method and system enable an access or request to load image data in a different color format from an address in a color conversion address space, which comprises an alternate memory space. Pixel color data in the color conversion address space have a corresponding address for data in the other color format that is stored in system memory. The corresponding address is determined by subtracting a predefined offset from the conversion memory address. Differences in the size of the color format data for the requested pixels are accommodated by applying an appropriate factor to determine the system memory address. Color data for the pixels stored at the system memory address are converted to the desired color format and the converted color format data are delivered to the processor for use and stored in a buffer for subsequent access as required.

REFERENCES:
patent: 5359694 (1994-10-01), Concordel

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