Display device

Details Display device Display device

2006-03-08

2008-11-25

Lewis, David L (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S089000, C345S690000

Reexamination Certificate

active

07456817

ABSTRACT:
A gradation circuit is provided with an error diffusion circuit, a dither pattern circuit and a switch. The error diffusion circuit converts a digital signal into a signal indicative of a level of gradation by an error diffusion method. The dither pattern circuit converts a digital signal into a signal indicative of a level of gradation by a dithering method. The switch selects for output between an output signal of the error diffusion circuit and an output signal of the dither patter circuit as on output signal of the gradation circuit.

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