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:
Jul. 13, 1999
Filed:
Jul. 08, 1996
Applicant:
Inventor:
Yasuhiro Izawa, Sanda, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
345421 ; 345423 ;
Abstract
A device for creating an image representing a three-dimensional scene of objects includes a conversion unit which divides a Z axis into a plurality of segments to create a plurality of spaces and converts view-point coordinates of the objects into perspective coordinates for each of the plurality of spaces. The device further includes a hidden-surface processing unit for carrying out hidden-surface processing based on a Z-buffer method by using the perspective coordinates of the objects to create the image.