Efficient digital map overlays

Details Efficient digital map overlays Efficient digital map overlays

2005-12-27

2005-12-27

Lefkowitz, Sumati (Department: 2677)

Computer graphics processing and selective visual display system

Computer graphics processing

Graphic manipulation

Reexamination Certificate

active

06980224

ABSTRACT:
In a graphics processing system utilizing a graphics interface that defines each color fragment using at least one color fragment characteristic component, a method and system for more efficient display of a graphic overlay. The method can comprise for each color fragment in a map scene, defining the color fragment characteristic component value based on a location characteristic associated with a location on the map, setting a test value, and comparing the color fragment characteristic component value for each color fragment in the map scene to the test value to determine whether the color fragment should be displayed in an overlay color.

REFERENCES:
patent: 4970682 (1990-11-01), Beckwith, Jr. et al.
patent: 5621869 (1997-04-01), Drews
patent: 6104407 (2000-08-01), Aleksic et al.
patent: 6522341 (2003-02-01), Nagata

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