Digital display unit of a computer system having an improved met

Details Digital display unit of a computer system having an improved met Digital display unit of a computer system having an improved met

1998-06-20

2000-11-14

Hjerpe, Richard A.

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345213, G09G 336

Patent

active

061476684

ABSTRACT:
A digital display unit for minimizing the display artifacts which may be caused by aliasing of high frequency distortions present in wide bandwidth analog display signals. The minimization is achieved by modulating a sampling clock signal by different phase delay amounts for successive lines or frame. Due to such modulation, the analog display signal is sampled at different sampling points in different frames for the same pixel position. As digital display screens are typically designed to respond slowly to differing scanning intensities and as the human eye generally averages different color intensities at the same point, a low-pass filter effect may be in place with respect to the samples taken at the same pixel position. Display artifacts are minimized due to the sampling at different sampling points and the low-pass filter effect.

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patent: 5917461 (1999-06-01), Sakani et al.
patent: 5959691 (1999-09-01), Koh

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