Dithering circuit and method

Details Dithering circuit and method Dithering circuit and method

1992-02-14

1995-02-14

Hjerpe, Richard

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345148, G09G 300

Patent

active

053899482

ABSTRACT:
A display device with improved color and grey scale capability employs an improved time dependent dithering technique. In the display device, each pixel is controlled so as to be illuminated only a certain number of times during a fixed display time period, the number of illuminations during the time period being dependent on the color or grey scale value of a corresponding pixel in an original image, the frame number, and a dither matrix element. Additionally, the device chooses the particular frames during which a pixel is illuminated so as to give a soft and smooth displayed image with no flashing.

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Fundamentals of Interactive Computer Graphics, by Foley and Van Damm, Addison-Wesley Publishing Co., Ltd. 1982, pp. 600-602.

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