Display system

G - Physics – 09 – G

Patent

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375/12

G09G 5/00 (2006.01) G09G 5/393 (2006.01)

Patent

CA 2021830

DISPLAY SYSTEM ABSTRACT A computer graphics system is presented, having display logic (92) comprising a destination bit map (11) containing a plurality of image bits which map to a plurality of pixels for presenting an image, an auxiliary bit map (1) containing a plurality of area boundary bits representing pixels defining an area boundary line which encloses an area of the image, area filling logic (7) for operating upon those image bits enclosed by the area boundary line in order to fill the area with a particular pattern and colour, characterised in that the display logic further comprises area boundary drawing logic (5) having line segmentation means to resolve the specified boundary line into a plurality of intersecting two pixel line segments which can, from that time forward, be operated upon separately to define the area boundary bits in accordance with conventional area boundary drawing rules.

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