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:
Jul. 04, 2006
Filed:
Jun. 24, 2003
Atsushi Okuyama, Chiyoda, JP;
Seiichi Domyo, Sagamihara, JP;
Hitoshi Ogawa, Yokohama, JP;
Kazuaki Usui, Chiyoda, JP;
Atsushi Okuyama, Chiyoda, JP;
Seiichi Domyo, Sagamihara, JP;
Hitoshi Ogawa, Yokohama, JP;
Kazuaki Usui, Chiyoda, JP;
Hitachi Global Storage Technologies Japan, Ltd., Odawara, JP;
Abstract
An information recording/reproducing system in which a host system making access to a magnetic disk apparatus can be limited to a specific one. A magnetic disk apparatus includes an authentication key generating block for generating an authentication key on the basis of physical characteristic(s) of the magnetic disk apparatus itself. The magnetic disk apparatus and the host system have, respectively, authentication key recording block for recording the authentication key and authentication data generating block for generating authentication data on the basis of the authentication key. Access from the host system to information of the magnetic disk apparatus is controlled based on the authentication data of the host system and the authentication data of the magnetic disk apparatus.