Reducing power consumption and bus bandwidth requirements in cel

Details Reducing power consumption and bus bandwidth requirements in cel Reducing power consumption and bus bandwidth requirements in cel

1999-01-26

2000-06-13

Tung, Kee M.

Computer graphics processing and selective visual display system

Display driving control circuitry

Physically integral with display elements

345509, 345512, 382232, 382233, 382245, 382246, G06T 900

Patent

active

060755237

ABSTRACT:
A method and apparatus for reducing power consumption and system bus load caused by a display controller in a unified memory system. A compression engine monitors a bus over which display data from the unified memory flows. The compression engine captures and compresses a copy of the display data corresponding to a display frame. The compressed data is stored in a small memory unit. Subsequent refreshes of the display are serviced by a decompression engine. The decompression engine decompresses the compressed data from the small memory unit and provides the decompressed data to the display controller.

REFERENCES:
patent: 5081450 (1992-01-01), Lucas et al.
patent: 5129011 (1992-07-01), Nishikawa et al.
patent: 5706035 (1998-01-01), Tsunoda et al.
patent: 5907330 (1999-05-01), Simmers

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