Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1995-03-07
1998-05-19
Bayerl, Raymond J.
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
395101, G06F 1562
Patent
active
057541647
ABSTRACT:
The present invention relates to an outline font expanding method and an outline font expanding device each of which can reproduce faithfully the line width of an original outline font. The coordinate system for vector data is defined on the boundaries between dots to create an outline font on the boundaries. The number of dots in the main scanning direction is calculated as a unit change when the outline font is moved by one dot in the secondary scanning direction. A value obtained by dividing the unit change by 2 is added to the coordinate in the main scanning direction of the outline font. while the scanning line is moved dot by dot in the main scanning direction, the intersection of the scanning line and the outline font is obtained at each move position. Thus, the filling range over the scanning line is defined in the main scanning direction. This invention is applicable to a method which fills the inside of an outline font drawn, based on vector data and then forms a dot pattern of a character, symbol, graph, or the like.
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Murai Katsumi
Yamauchi Toshiya
Yutani Yoshikazu
Bayerl Raymond J.
Fujitsu Limited
Sax Steven P.
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