Modifying gray voltage signals in a display device

Details Modifying gray voltage signals in a display device Modifying gray voltage signals in a display device

2004-08-10

2008-12-23

Nguyen, Kevin M (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S690000

Reexamination Certificate

active

07468716

ABSTRACT:
A method and apparatus for driving a display device, as well as a display device incorporating such method and apparatus, are presented. The method includes determining a first difference Δ1, wherein Δ1is a difference between gray signals of two consecutive frames, comparing Δ1to a predetermined value to obtain a comparison result, and using the comparison result to determine a modified current gray signal. The modified current gray signal is applied to a current frame to improve image quality. In another aspect, the invention includes a method of driving a display device by determining the gray signal levels for a first frame, a second frame that follows the first frame, and a third frame. A modified current gray signal is determined based on the relative magnitudes of the three gray signal levels, and applied to the current frame.

REFERENCES:
patent: 5465102 (1995-11-01), Usui et al.
patent: 5537128 (1996-07-01), Keene et al.
patent: 6348930 (2002-02-01), Kobayashi et al.

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