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:
Nov. 30, 2004
Filed:
Feb. 15, 2001
Chikai Ono, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
According to an aspect of the present invention, a redundant file memory for recording first replacement information having an address of a defective cell to be replaced with a redundant cell is configured by a memory cell having the same configuration as an ordinary memory cell, and when accessing the ordinary memory cell, the redundant file memory can be accessed at the same time. Furthermore, second replacement information indicating whether or not the ordinary cell in correspondence with the stored address is a defective one is recorded in the redundant file memory. When accessing the ordinary memory cell, the first and second replacement information recorded in the redundant file memory are read out at the same time, and the defective cell is replaced with the redundant cell according to the replacement information.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile