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:
Jan. 17, 1989
Filed:
Oct. 20, 1986
Applicant:
Inventors:
Hiraku Nakano, Hadano, JP;
Hiroshi Murayama, Hadano, JP;
Assignee:
Hitachi Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364760 ;
Abstract
High and low order bit carry propagation adders are connected to outputs of carry save adder trees which produce half-sums and half-carries. Following carry propagation addition of the low order bits carry propagation addition of the high order bits is carried out. A carry from the low order bit carry propagation addition is added to the high order bit carry propagation addtion.