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:
May. 18, 2010
Filed:
Nov. 03, 2005
Hidenari Hachino, Nagasaki, JP;
Hironobu Mori, Nagasaki, JP;
Nobumichi Okazaki, Kanagawa, JP;
Katsuhisa Aratani, Chiba, JP;
Hidenari Hachino, Nagasaki, JP;
Hironobu Mori, Nagasaki, JP;
Nobumichi Okazaki, Kanagawa, JP;
Katsuhisa Aratani, Chiba, JP;
Sony Corporation, Tokyo, JP;
Abstract
A memory includes: memory elements arranged in a matrix, each memory element having such characteristics that when an electric signal at a level equal to or higher than that of a first threshold signal is applied to the memory element, the resistance thereof is changed from a high value to a low value, and when an electric signal at a level equal to or higher than that of a second threshold signal is applied thereto, the resistance is changed from the low value to the high value, the polarities of the first and second threshold signals being different from each other; electric circuits for applying electric signals to the memory elements; and detection units each for measuring a current flowing through the corresponding memory element or a voltage applied thereto from the start of the application of electric signals to detect whether the resistance is high or low.