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:
Jan. 09, 1996
Filed:
Apr. 28, 1993
Applicant:
Inventors:
Assignees:
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Information Systems Research Australia Pty Ltd, Sydney, AU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06T / ;
U.S. Cl.
CPC ...
395133 ; 395138 ; 395139 ; 395163 ;
Abstract
A method and apparatus is disclosed for preprocessing fragments of two-dimensional graphic objects prior to display in a real-time rasterized format. The apparatus is formed as a pipeline having a translation and scaling section, a filter section, a pre-calculation section, and an interlace correction section. The preferred embodiment is specifically configured to process quadratic polynomial fragments (QPFs) of objects, and to calculate QPFs at high speed thereby permitting real-time rendering on a display. The preferred embodiment also forms part of a real-time object based graphics system.