Method and apparatus for producing perception of high quality gr

Details Method and apparatus for producing perception of high quality gr Method and apparatus for producing perception of high quality gr

1992-04-06

1994-03-08

Brier, Jeffery

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345 1, G09G 320, G09G 510

Patent

active

052931595

ABSTRACT:
The perception of grayscale shading on a digitally commanded display is produced by commanding pixels of the display with brightness-setting signals of differing average duty cycles. Brightness-setting signals having one brightness level associated with them are phase shifted in relation to time and distributed to spaced apart pixel locations at which the one brightness level is to be produced. The energization of spatially adjacent pixels is scattered in time and pixels which are energized at the same time are selected to be spatially scattered so as to avoid the perception of visual disturbances such as flickering and surface streaming.

REFERENCES:
patent: 3716658 (1973-02-01), Rackman
patent: 4559535 (1985-12-01), Watkins et al.
patent: 4760387 (1988-07-01), Ishii et al.
patent: 4816816 (1989-03-01), Usui
P. 38, Technical Manual, SED 1341 F.sub.OE, 1988, SMOS Systems Inc.

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