Video subsystems utilizing asymmetrical column interleaving

Details Video subsystems utilizing asymmetrical column interleaving Video subsystems utilizing asymmetrical column interleaving

1993-07-16

1994-09-20

Weldon, Ulysses

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345200, 345164, G09G 300

Patent

active

053493729

ABSTRACT:
This is a method and apparatus for interleaving data in a VRAM. A video card is provided which has less VRAMs than the equivalent prior art video cards which have the same speed and same size data paths. Herein is utilized non symmetrical column interleaving whereby each pixel on the display having coordinates X, and Y is mapped into the VRAMS rows and columns R and C according to the formula:

REFERENCES:
patent: 4571638 (1986-02-01), Schneider et al.
patent: 4731742 (1988-03-01), Nishi et al.
patent: 4931958 (1990-06-01), Takeda
patent: 4933877 (1990-06-01), Hasebe
patent: 4941110 (1990-07-01), Bassman
patent: 4975857 (1990-12-01), Katsura et al.
patent: 5255366 (1993-10-01), Chia et al.

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