Apparatus for shade gradation enhancement and flicker reduction

Details Apparatus for shade gradation enhancement and flicker reduction Apparatus for shade gradation enhancement and flicker reduction

1992-04-08

1994-05-17

Brier, Jeffery

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 99, 345148, G09G 336

Patent

active

053132246

ABSTRACT:
A method and apparatus for increasing the perceived gradation of the shades in visual displays is disclosed. A plurality of signals control the intensity of a sub-pixel of a display so that display can exhibit a native number of shades. Frame rate modulation techniques are used to increase the perceived gradation. Finally, flicker is reduced by spreading the phases of the modulating pixels across time, and the horizontal and vertical axes of the display.

REFERENCES:
patent: 5068649 (1991-11-01), Garrett
"Technical Reference LQ10D01", Sharp Corporation, Electronic Components Group, dated Mar. 1, 1990.
"Technical Literature for TFT-LCD module", Model No. LQ9D011, Sharp Corporation, Liquid Crystal Display Group, TFT LCD Development Center, Revised Dec. 13, 1991.
Copy of slides presented by Sharp Corporation at a Jun., 1993 seminar.

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