Method and apparatus for screen power saving

Details Method and apparatus for screen power saving Method and apparatus for screen power saving

1993-12-29

1997-01-28

Harvey, Jack B.

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

345 90, 345212, 345214, G06F 130, G09G 336

Patent

active

055985653

ABSTRACT:
A flat panel display power management system for a flat panel display screen in a portable electronic device is disclosed. The flat panel display power management system is capable of controlling the amount of power delivered to each pixel on the flat panel display screen. The portable electronic device can select a subset of important pixels that will continue to receive more power than the remaining pixels if the flat panel display power management system enters a reduced power mode. When the electronic device system determines that the user has been inactive for a predetermined amount of time or if the user manually requests low power mode, the flat panel display power management system enters the reduced power mode. In the reduced power mode, the flat panel display power management system reduces the power provided to the pixels that are not within the subset of important pixels.

REFERENCES:
patent: 5012274 (1991-04-01), Dolgoff
patent: 5136695 (1992-08-01), Goldshlag et al.
patent: 5241680 (1993-08-01), Cole et al.
patent: 5359345 (1994-10-01), Hunter
Gary Stix, "Manufacturing hurdles Challenge large-LCD developers", Sep. 1989, pp. 36-40, IEEE Spectrum.

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