Graphic output device including antialiasing capability governed

Details Graphic output device including antialiasing capability governed Graphic output device including antialiasing capability governed

1991-10-23

1994-06-28

Harkcom, Gary V.

395143, G06F 1562

Patent

active

053254740

ABSTRACT:
A graphic output device for removing the aliases of the edges of a vector image by an antialiasing procedure and effectively outputting image data undergone such processing. Whether or not the inclination of an input vector is greater than 45 degrees is determined. In the event of outputting the result of antialiasing processing, a pulse width modulation system (vertically long dot diameter) is selected if the inclination of the vector is greater than 45 degrees, or a power modulation system (horizontally long dot diameter) is selected if it is smaller than 45 degrees.

REFERENCES:
patent: 4847641 (1989-07-01), Tung
patent: 5134495 (1992-07-01), Frazier et al.
Computer Graphics Principles and Practice Foley et al. (1990) pp. 132-143.

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