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. 24, 2006
Filed:
Sep. 22, 2004
Naohisa Tatsukawa, Osaka, JP;
Atsushi Fujiwara, Osaka, JP;
Naohisa Tatsukawa, Osaka, JP;
Atsushi Fujiwara, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In a nonvolatile memory device, wherein, for example, data '1' is electrically charged, while data '0' is not electrically charged, and memory cells susceptible to charge loss are included, when data in the arrayis count value of “1”>count value of “0”, write data is converted to thereby make “1” to “0” and “0” to “1”, leading to number of “1”<number of “0”, so that a statistical reliability of the data in the arrayis improved. The data, which is converted and written, is converted in its polarity prior to the conversion when it is read.