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:
Dec. 19, 2006
Filed:
Nov. 19, 2002
Tanio Nagasaki, Tokyo, JP;
Hideaki Tomikawa, Tokyo, JP;
Seigo Iwasaki, Tokyo, JP;
Tetsuo Motomura, Tokyo, JP;
Masahiro Igarashi, Kanagawa, JP;
Tanio Nagasaki, Tokyo, JP;
Hideaki Tomikawa, Tokyo, JP;
Seigo Iwasaki, Tokyo, JP;
Tetsuo Motomura, Tokyo, JP;
Masahiro Igarashi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
Texture data filtered according to each of different reduction ratio are stored in a texture buffer. A texture mapping apparatus (an lod calculating apparatus) calculates an lod (Level Of Detail) which represents a reduction ratio of each pixel of a polygon. The calculation does not include a divisional calculation. In other words, the lod calculating apparatus does not need many multipliers, as compared with a case in which an operation including a divisional calculation, thereby enabling the down-sizing of the lod calculating apparatus.