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:
Feb. 21, 2006
Filed:
Sep. 11, 2001
Applicants:
Haneef D. Mohammed, Beaverton, OR (US);
Rochan Sankar, San Jose, CA (US);
Inventors:
Haneef D. Mohammed, Beaverton, OR (US);
Rochan Sankar, San Jose, CA (US);
Assignee:
Cypress Semiconductor Corp., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/50 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for computing a sum or difference and a carry-out of numbers in product-term based programmable logic comprising the steps of: (A) generating (i) a portion of the sum or difference and (ii) a lookahead carry output in each of a plurality of logic blocks; (B) communicating the lookahead carry output of each of the logic blocks to a carry input of a next logic block; (C) presenting the lookahead carry output of a last logic block as the carry-out.