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:
Jul. 03, 2001
Filed:
Jul. 06, 2000
Applicant:
Inventors:
Takayuki Nagasawa, Kawasaki, JP;
Shinya Fujioka, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C 8/00 ;
U.S. Cl.
CPC ...
G11C 8/00 ;
Abstract
A semiconductor memory device having memory cells, spare memory cells to replace defective memory cells and a decision block. The decision block has a plurality of groups, each of which decides whether an input address is an address which selects a memory cell in the defective memory cells. A signal having a different address expression type of the input address is provided to each of the groups.