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:
Aug. 26, 2003
Filed:
Oct. 18, 2000
Applicant:
Inventors:
Mike Hong, Cupertino, CA (US);
Dong-Ying Kuo, Pleasanton, CA (US);
Mark Shuxin Zheng, San Jose, CA (US);
Assignee:
S3 Graphics Co., Ltd., Grand Cayman, VG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06T 1/700 ;
U.S. Cl.
CPC ...
G06T 1/700 ;
Abstract
A lighting evaluation unit in a graphics processing system. The lighting evaluation unit includes a calculation unit having dot product circuitry used in determining specular, diffuse, spot, and attenuation components of a lighting equation in parallel. In one embodiment, the lighting evaluation unit is constructed in a pipeline manner, and includes multi-use circuitry for performing dot product calculations.