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:
Mar. 18, 1997
Filed:
Aug. 28, 1995
Thomas M Albers, Houston, TX (US);
John V Eberst, Houston, TX (US);
Darwin Fontenot, Houston, TX (US);
Richard L Pyra, Houston, TX (US);
Mark W Welker, Spring, TX (US);
Paul B Wood, Spring, TX (US);
Jack E Bresenham, Rock Hill, SC (US);
Compaq Computer Corporation, Houston, TX (US);
Abstract
Line draw circuitry receives parameters defining first and second endpoints of a line and calculates line parameters based on the first and second endpoints. The line parameters are then stored in a memory. A 'calculate-only' control signals determines whether a line is drawn immediately after calculation (and storing) of the end parameters or whether the line is drawn responsive to a subsequent 'start' signal. If the line is to be drawn responsive to the start signal, the line parameters may be modified prior to drawing the line.