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:
Jun. 25, 2002
Filed:
Mar. 11, 1999
Applicant:
Inventors:
Shinichi Furuhashi, Tokyo, JP;
Toshiyuki Kaji, Tokyo, JP;
Assignee:
Sega Enterprises, Ltd., , JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06T 1/540 ;
U.S. Cl.
CPC ...
G06T 1/540 ;
Abstract
The image display apparatus of the present invention examines the transparency of a pixel to determine whether the Z coordinate of the pixel should be written in the depth buffer. Therefore, when the objects which are constituted by polygons, wherein opaque pixels and translucent pixels coexist, intersect each other, the variation in the display of image patterns which are to be displayed is increased. Since the writing control is performed under simple conditions, i.e., in accordance with the transparency of a pixel, an image closer to the ideal one can be selected without substantially increasing the load imposed on the rendering circuit.