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:
Sep. 30, 2008
Filed:
Feb. 09, 2005
Masahiko Watanabe, Nara, JP;
Yasumichi Mori, Nara, JP;
Masahiko Watanabe, Nara, JP;
Yasumichi Mori, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A semiconductor storage device according to the present invention comprises one or more memory planescomprising a plurality of memory blocks, and a block selection circuit for decoding an block address signal for selecting the memory blockfrom the memory planeto select the memory block, generates a dummy block address for selecting a dummy block that is different from the selected block address and a defective block address of a defective block by a predetermined logical operation targeted for a specific partial bit in address bits of the selected block address when the defective block is contained in the memory plane. A bit line connected to the selected memory cell selected by the selected block address and a bit line in the dummy block are connected to differential input terminals of a sense amplifier circuit