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. 02, 2014
Filed:
Apr. 05, 2010
Takahiko Sugahara, Osaka, JP;
Tetsuo Furuichi, Osaka, JP;
Ikuo Yamaguchi, Osaka, JP;
Takashi Oshikiri, Osaka, JP;
Takahiko Sugahara, Osaka, JP;
Tetsuo Furuichi, Osaka, JP;
Ikuo Yamaguchi, Osaka, JP;
Takashi Oshikiri, Osaka, JP;
MegaChips Corporation, Osaka-shi, JP;
Abstract
A technique allowing an improvement in the confidentiality of information stored in a memory device. A memory controller includes a key generation part that newly generates key information for use in encryption and decryption of information at every predetermined timing, and a data conversion circuit that encrypts information to be outputted to a memory device based on the information and decrypts encrypted information inputted from the memory device based on the key information. In the data conversion circuit, each time the key generation part generates new key information, key information is updated so as to set the new key information as the key information.