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. 25, 2006
Filed:
Nov. 02, 2004
Shintaro Hayashi, Yokohama, JP;
Manabu Satoh, Ashigarakami-gun, JP;
Masahiro Yoshihara, Yokohama, JP;
Naoaki Kanagawa, Yokohama, JP;
Mami Kawabata, Yokohama, JP;
Shintaro Hayashi, Yokohama, JP;
Manabu Satoh, Ashigarakami-gun, JP;
Masahiro Yoshihara, Yokohama, JP;
Naoaki Kanagawa, Yokohama, JP;
Mami Kawabata, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor memory device adopting a bit line twist system in which at least a part of bit lines are twisted, includes memory cell arrays each having a plurality of memory cells to store data, redundancy cell arrays each having a plurality of redundancy cells to replace a defective cell in the memory cell array, and a control circuit which performs control to invert a direction of the data. The device further includes an inversion circuit which inverts the direction of the data, in accordance with the control by the control circuit.