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:
Jun. 09, 2015
Filed:
Mar. 15, 2011
Takamichi Hayashi, Tokyo, JP;
Hiroshi Kuno, Kanagawa, JP;
Munetake Ebihara, Kanagawa, JP;
SONY CORPORATION, Tokyo, JP;
Abstract
A memory device includes: a storage unit that stores public key information of a certificate authority for verifying a certificate and includes a secret area storing data of which secrecy is assured; and a control unit that controls access to the storage unit depending on reception information, wherein the reception information includes information where access control information is added to certificate information authenticated by the certificate authority, and the control unit verifies the certificate using the public key, identifies the access control information, and limits the accessible secret area in the storage unit.