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:
Oct. 28, 2003
Filed:
Jun. 06, 2002
Hiromu Kinoshita, Tokyo, JP;
Hideo Matsui, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A semiconductor memory such as 256 KB-memory has a memory cell array divided into a plurality of memory blocks, and a defective memory block exists in the memory cell array. In this case, to relive the 256 KB-memory as a 192 KB-memory not including the defective memory block of 64 KB, identification information identifying the defective memory block is stored in a relief condition storing unit, an address sent from an address bus is changed according to the identification information, and a changed address is input to a decoder of the memory cell array. For example, because a memory block of an address ( ) is not guaranteed, in cases where a physical address ( ) is assigned to the defective memory block, the address change is performed to change an address ( ) sent from the address bus to the address ( ) of the defective memory block.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile