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. 08, 2014
Filed:
Feb. 01, 2012
Motonari Honda, Kanagawa, JP;
Motonari Honda, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A memory unit includes memory elements and a drive section. In executing a first operation out of the first operation for changing resistance state of the memory element from one resistance state out of low resistance state and high resistance state to the other resistance state and a second operation for changing the resistance state of the memory element from the other resistance state to the one resistance state, the drive section performs stepwise operation, in which the drive section repeatedly performs, at least one time, a step in which strong stress application step for applying a stress for performing the first operation to the memory element as the drive target relatively strongly is performed and subsequently weak stress application step for applying a stress for performing the second operation to the memory element as the drive target relatively weakly is performed, and subsequently performs the strong stress application step.