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:
Jun. 19, 2001
Filed:
Jun. 19, 1998
Applicant:
Inventors:
Stephen Clark Purcell, Mountain View, CA (US);
Nital P. Patwa, San Jose, CA (US);
Assignee:
ATI International SRL, Hastings, BB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/52 ;
U.S. Cl.
CPC ...
G06F 7/52 ;
Abstract
An adder tree includes several partial product generators, each generating a bit of equal weight. An adder receives the bits and provides a carry bit to a logic unit. The logic unit propagates the carry bit to the next more significant column in response to a carry enable instruction. The logic unit outputs a bit that is independent of the carry bit in response to a lack of a carry enable instruction.