US PATENT SUBCLASS 345 / 421
.~.~ Hidden line/surface determining

Current as of: June, 1999
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345 /   HD   COMPUTER GRAPHICS PROCESSING, OPERATOR INTERFACE PROCESSING, AND SELECTIVE VISUAL DISPLAY SYSTEMS

418  DF  COMPUTER GRAPHICS PROCESSING {9}
419  DF  .~ Three-dimension {7}
421.~.~ Hidden line/surface determining {1}
422  DF  .~.~.~> Z buffer (depth buffer)

DEFINITION

Classification: 345/421

Hidden line/surface determining:

(under subclass 419) Subject matter wherein it is determined whether a portion of an object is hidden or covered by another object and, if so, not displaying (removing) that portion of the object which is hidden.

SEE OR SEARCH THIS CLASS, SUBCLASS:

435, for merging or overlapping s:graphic objects.