Power saving palette look-up table for graphics controller

Details Power saving palette look-up table for graphics controller Power saving palette look-up table for graphics controller

2006-12-26

2006-12-26

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

C345S211000, C345S601000, C345S602000, C345S690000

Reexamination Certificate

active

07154487

ABSTRACT:
A system for generating compensation pixel data for pixel data having adjacent values. The compensation pixel data is the pixel data adjusted by a value in order to perform an effect with the pixel data. The system has a comparator for determining whether the pixel data varies between adjacent values. Furthermore, the system includes a look-up table in communication with the comparator. The look-up table replaces the subsequent value of the pixel data with the compensation pixel data only when the preceding value of the pixel data is different than the subsequent value thereby reducing the number of look-ups for the compensation pixel data.

REFERENCES:
patent: 5515480 (1996-05-01), Frazier
patent: 5710836 (1998-01-01), Shiau et al.
patent: 6169533 (2001-01-01), Tse
patent: 6765614 (2004-07-01), Matsukawa
patent: 2002/0135550 (2002-09-01), Pfeiffer et al.
patent: 2004/0041825 (2004-03-01), Willis

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