Method and apparatus for display image rotation

Details Method and apparatus for display image rotation Method and apparatus for display image rotation

1996-09-27

1998-12-29

Tung, Kee M.

Computer graphics processing and selective visual display system

Computer graphic processing system

Integrated circuit

345126, 345437, 382296, G06F 1206

Patent

active

058546413

ABSTRACT:
A method and an apparatus for rotating images on a computer system is disclosed. The system includes a processor for accessing an image frame buffer using a set of CPU addresses, a memory for storing the frame buffer, a controller for directing the pixel data of the frame buffer to a display device using a set of controller addresses. The two sets of addresses are not necessarily the same. In fact, numerous advantages could be had from manipulating those two sets of addresses resulting in image rotation operations for the display device.

REFERENCES:
patent: 4952920 (1990-08-01), Hayashi
patent: 4995089 (1991-02-01), Altrieth, III
patent: 5533185 (1996-07-01), Lentz et al.

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