Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1994-04-08
1996-07-16
Kuntz, Curtis
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345127, 345129, 345130, 345141, G09G 106
Patent
active
055371310
ABSTRACT:
In a character generating method and an apparatus for converting outline data of a character to coordinates of a desired character size to generate a bit map image of that character size, each piece of outline coordinate data expressing a contour line of the character in logical coordinates is converted into coordinates of the designated size. The method further comprises replacing converted coordinates of designated points on the contour line with coordinates on a reference line determined by coordinates of specific reference points and rounding the individual converted coordinates of the contour and converting the rounded coordinates line into physical coordinates expressed by integers. The apparatus has a font memory for storing outline font data expressing a contour line of the character in coordinates, a character developing circuit for reading each piece of outline data from the font memory, converting the read outline data into coordinates of a designated size, replacing converted coordinates of designated points on the contour line with coordinates on a reference line determined by coordinates of specific reference points, rounding the individual converted coordinates of the contour line, and converting the rounded coordinates into physical coordinates expressed by integers. A drawing circuit is provided for generating a bit map image of the character from the converted physical coordinates.
REFERENCES:
patent: 4897638 (1990-01-01), Kokunishi
patent: 5079724 (1992-01-01), Shiraki
patent: 5295240 (1994-03-01), Kajimoto
Antonius Hellmann
Mitsuhashi Hiroki
Motokado Shinichiro
Ohtomo Mutsumi
Fujitsu Limited
Kuntz Curtis
Oh Minsun
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