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. 04, 2011
Filed:
Jul. 05, 2007
Toshimasa Namekawa, Ota-ku, JP;
Hiroaki Nakano, Yokohama, JP;
Toshimasa Namekawa, Ota-ku, JP;
Hiroaki Nakano, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor memory device configured to execute a standby operation for saving power during standby, and including a memory cell array including plural memory cells arranged at intersections of bit lines and word lines and storing cell data. A redundant memory cell array shares the bit lines with the memory cell array and includes plural redundant memory cells arranged at intersections of the bit lines and redundant word lines storing redundant data for error correction of cell data stored in the memory cell array. A sense amplifier senses and amplifies the voltage on the bit line to read the cell data or the redundant data from the memory cell array or the redundant memory cell array. A cyclic redundant encoder/decoder, through sequential processing, encodes the cell data to generate the redundant data, or decodes the cell data and the redundant data for error correction of the cell data.