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:
Aug. 11, 1998
Filed:
Jun. 07, 1995
Applicant:
Inventors:
David A Duncan, Arden Hills, MN (US);
Gerald E Sobelman, Minnetouka, MN (US);
Karl M Fant, Minneapolis, MN (US);
Assignee:
Theseus Research, Inc., St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364768 ; 364784 ; 395800 ;
Abstract
A NULL convention full adder receives a plurality of inputs, each having an asserted state and a NULL state. The adder switches its output to an asserted state when all inputs have been received and summed. The adder switches its output to the NULL state only after all inputs have returned to NULL. A register can be incorporated into each full adder. Multiple full adders are combined into multi-bit adders with registration.