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. 12, 1997
Filed:
Apr. 13, 1995
John J Watters, Spring, TX (US);
Giang H Dao, Houston, TX (US);
Compaq Computer Corporation, Houston, TX (US);
Abstract
A graphics controller for use in a computer system includes a run slice line draw engine to generate a line as a plurality of slices. The run slice line draw engine can perform non-linear scaling and shading of lines in accordance with a parametric equation by approximating the parametric equation as a polyline with a plurality of linear segments. The polyline approximation can be generated using information concerning each derivative of the parametric equation. Each linear segment of the polyline includes a plurality of slices generated by the run slice line draw engine. By approximating the polyline as a plurality of linear segments, non-linear scaling and/or shading by the run slice line draw engine can be performed without complex mathematical computations.