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, 2004
Filed:
May. 17, 2001
Applicant:
Inventors:
Laszlo Hars, Cortlandt Manor, NY (US);
Gregory Michael Perkins, Pennington, NJ (US);
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/38 ;
U.S. Cl.
CPC ...
G06F 7/38 ;
Abstract
A method for calculating greatest common divisors and modular inverses using the extended Jebelean GCD algorithm keeps track of the number of times that U3 and V3 have been divided by two in the process of calculating the greatest common divisor and correct the modular inverse for these divisions. The shifting of the binary values representing U3 that occurs during the calculation of the GCD is accomplished by changing the position of respective pointers to bit positions in the binary values rather than implementing a shifting operation.