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:
Apr. 21, 1987
Filed:
Dec. 17, 1984
Keizo Aoyama, Yamato, JP;
Fujitsu Limited, Kanagawa, JP;
Abstract
A organization for multi-bit output includes a plurality of memory cell groups and a plurality of data buses, each of which belongs to each of the groups, wherein one of memory cells in each memory cell groups are selected at the same time. A semiconductor memory device includes a plurality of groups of redundant cells one of which can replace a group of memory cells which comprise a defective memory cell, and switching circuits which selectively connect one of the groups of the redundant cells to the data bus belonging to one of the groups of memory cells. The switching circuit can connect the one of groups of the redundant cells to one of the data buses belonging to any of the cell groups.