Computer graphics processing and selective visual display system – Computer graphic processing system
Patent
1998-02-05
2000-04-04
Tung, Kee M.
Computer graphics processing and selective visual display system
Computer graphic processing system
345507, G06T 100
Patent
active
060467517
ABSTRACT:
A color graphic processor generating a picture screen formed by a two-dimensional pixel array for a raster-scan display. The color graphic processor comprises a scan image generator and a color video encoder. A circular pixel buffer having a plurality of pixel buffer units is used to buffer pixel data for drawing and displaying. The pixel buffer unit storing the pixel information of a current scanning position is circularly reused after the scanning position moves to the next one. The number of pixel buffer unit is flexible and does not have to be the same as the number of pixels in a horizontal scan line. A transparent information storage means and a transparent controller are included to reduce the size of the pixel buffer and control transparent pixels. The color video encoder processes digital luminosity, saturation and hue signals according to a video sync signal and a color burst flag signal to generate a digital luminosity signal and a digital chromaticity signal. The two video signals are combined to form a composite video signal. Digital-to-analog converter converts the digital video signals to analog video signals. The color video encoder supports both NTSC and PAL standard.
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patent: 5835783 (1998-11-01), Grimsrud
Kato Shuhei
Sano Koichi
SSD Company Limited
Tung Kee M.
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