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. 07, 1993
Filed:
Jan. 08, 1992
Applicant:
Inventors:
Dao-Long Chen, Fort Collins, CO (US);
Robert D Waldron, Fort Collins, CO (US);
Assignee:
NCR Corporation, Dayton, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364752 ;
Abstract
A device and method for approximating the square root of a binary number N. The device includes hardware for storing N, and a result register for storing x.sub.n, where x.sub.n is a successive approximation of r. The device also includes hardware for iteratively replacing x.sub.n with x.sub.n+1, starting with n=0, where x.sub.n+1 =(Ax.sub.n +N-x.sub.n.sup.2)/A, and x.sub.0 is within a predetermined range. 'A' is a multiple of 2 so that an operation involving a product or quotient with 'A' is effected by a shift operation.