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. 12, 2000
Filed:
Jul. 07, 1998
Applicant:
Inventors:
Eero Pajarre, Tampere, FI;
Mika Hoffren, Tampere, FI;
Assignee:
VLSI Solution Oy, Tampere, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
708650 ;
Abstract
The present invention relates to arithmetical computing devices, and especially to a division operation in three-dimensional (3D) graphics. A division f(a,b)=a/b is calculated by an integrated division circuit. In order to decrease the chip area and calculation time needed, the bit width of the divider and the dividend is reduced by preprocessing. Firstly, the scaling factor is searched in basis of the divider. Then both the divider and divident are scaled by the single scaling factor. Division is then done with these shrunk bit vectors.