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. 14, 2000
Filed:
Mar. 03, 1997
Thomas Michael Albers, Houston, TX (US);
John Vernon Eberst, Houston, TX (US);
Darwin Fontenot, Houston, TX (US);
Richard Lynn Pyra, Houston, TX (US);
Mark William Welker, Spring, TX (US);
Paul Berton Wood, Spring, TX (US);
Jack E Bresenham, Rock Hill, SC (US);
Compaq Computer Corporation, Houston, TX (US);
Abstract
A graphics device includes first and second endpoint memories where coordinates of a line can be stored. State logic within the graphics device calculates line parameters from the first and second endpoints. The calculated line parameters include a line error term which can be stored in an error term memory. The error term memory is writeable from a source external to the graphics device, such as the CPU of a computer system, so that the external source can modify the contents of the error term register.