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:
Nov. 03, 2015
Filed:
Nov. 29, 2011
Applicant:
Junji Sugisawa, Santa Clara, CA (US);
Inventor:
Junji Sugisawa, Santa Clara, CA (US);
Assignee:
Apple Inc., Cupertino, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 7/533 (2006.01); G06F 7/72 (2006.01);
U.S. Cl.
CPC ...
G06F 7/5338 (2013.01); G06F 7/722 (2013.01); G06F 7/724 (2013.01); G06F 2207/3812 (2013.01);
Abstract
A multiplier for performing multiple types of multiplication including integer, floating point, vector, and polynomial multiplication. The multiplier includes a modified booth encoder within the multiplier and unified circuitry to perform the various types of multiplication. A carry save adder tree is modified to route sum outputs to one part of the tree and to route carry outputs to another part of the tree. The carry save adder tree is also organized into multiple carry save adder trees to perform vector multiplication.