U.S. patents available from 1976 to present.
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Method for generating addresses to textured graphics primitives stored in rip maps

Patent 5222205 Issued on June 22, 1993. Estimated Expiration Date: Icon_subject June 22, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Grayscale character generator and method
Patent #: 4851825
Issued on: 07/25/1989
Inventor: Naiman

Texture mapping for computer graphics display controller system Patent #: 5097427
Issued on: 03/17/1992
Inventor: Lathrop, et al.

Inventors

Application

No. 494706 filed on 03/16/1990

US Classes:

345/587MIP map

Examiners

Primary: Harkcom, Gary V.
Assistant: Ba, Huynh

Attorney, Agent or Firm

International Class

G09B 009/08

Abstract

Methods for texture mapping graphics primitives in a graphics pipeline architecture system. The methods utilize rectangular box filters to down-sample original texture maps thereby optimizing aliasing and blurring when graphics primitives have a two-dimensional texture mapped to a three-dimensional object. The methods of texture mapping graphics primitives in a frame buffer graphics system comprise the steps of determining an original texture map of two dimensions for a surface, storing the original texture map in the frame buffer, sampling the original texture map independently using an asymmetrical filter to construct multiple versions of a texture and to address textured pixels on a display in the frame buffer graphics systems, mapping the textured pixels to areas on the frame buffer, and displaying the textured graphics primitives on the display. A technique for addressing textured pixels stored in a rectangular texture (RIP) map is also described.

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