The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 2003
Filed:
Oct. 04, 2001
Thomas A. Dye, Austin, TX (US);
Peter D. Geiger, Austin, TX (US);
Manuel J. Alvarez, II, Austin, TX (US);
Interactive Silicon, Inc., Austin, TX (US);
Abstract
A spanning based method for rendering and display of 3D graphical data on a display device. The method first parses the geometry data, generates independent vertex-sorted geometric primitives (e.g., triangles) and then performs setup on the geometric primitives. The method then computes horizontal segments that make up each triangle, performs a Y sort of the triangles for each span line, and performs an X sort of triangle segments and vertices for each span line. The method then performs a Z rules determination for each span line to discard or reject hidden segments. The method then constructs the 3-D VDRL list for each span line comprising pointers which reference viewed triangle spans. During execution, the 3-D VDRL is read and interpreted to generate pixel data. The pixel data includes the viewed triangle spans and may include texture data or other data referenced by the VDRL.