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. 14, 2009
Filed:
May. 16, 2007
Hiroshi Maejima, Tokyo, JP;
Katsuaki Isobe, Yokohama, JP;
Takumi Abe, Yokohama, JP;
Ken Takeuchi, Yokohama, JP;
Hiroshi Maejima, Tokyo, JP;
Katsuaki Isobe, Yokohama, JP;
Takumi Abe, Yokohama, JP;
Ken Takeuchi, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A NAND type flash memory included with a memory cell array composed of a plurality of electronically rewritable memory cells arranged in a matrix shape, and a data inversion control section which judges whether a polarity of a '1' data or a '0' data is to be inverted based on the number of the “1” data and the “0” data of the data when data is sent to the plurality of memory cells within a simultaneous write data unit and inverts the data and in the case where it is sent to the memory cell array adds an inversion flag bit to the data which shows the inversion of the polarity.