Anti-aliasing line display apparatus

Details Anti-aliasing line display apparatus Anti-aliasing line display apparatus

1994-01-21

1996-01-23

Nguyen, Phu K.

G06F 1516

Patent

active

054871425

ABSTRACT:
An anti-aliasing line display apparatus includes an input device for inputting a coordinate and an attribute of an input straight line which is to be displayed, a judging device for judging a width and a slope of the input straight line, an analyzing device for decomposing the input straight line into individual pixels and setting a drawing pixel to be drawn, a distance calculating device for calculating a distance from a center of the drawing pixel set by the analyzing means to the input straight line, an occupying ratio calculating means for calculating an occupying ratio of the input straight line with respect to the drawing pixel based on the distance calculated by the distance calculating device, a frame buffer, a blending device for blending the color of the drawing pixel and a color input in the frame buffer in advance based on the occupying ratio and for writing the blended color in the frame buffer, and a display device for displaying the input straight line based on the color of the drawing pixel written in the frame memory.

REFERENCES:
patent: 5265210 (1993-11-01), Vatti et al.
patent: 5287442 (1994-02-01), Alcorn et al.
patent: 5333250 (1994-07-01), Staley, II et al.

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