Display of graphics using a non-all points addressable display

Details Display of graphics using a non-all points addressable display Display of graphics using a non-all points addressable display

G - Physics

09

G

375/12

G09G 3/00 (2006.01) G09G 5/22 (2006.01)

Patent

CA 1220292

ABSTRACT A processor controlled character box display is provided with apparatus which permits the display of curvilinear graphics. The characters used to generate the graphics display are selected from a limited character set in read only storage (46), but by shifting the characters up or down by less than a full line index to provide additional character positions, it is possible to produce curvilinear graphics without the need for further character generation. Since the graphics display is a low resolution display, it is necessary to make a best dot selection in order to map the print bit map into the character box display.

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