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. 11, 2010
Filed:
Nov. 16, 2004
Yasunori Kaneda, Sagamihara, JP;
Yuichi Taguchi, Sagamihara, JP;
Fumi Miyazaki, Kawasaki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
When a computer system including a data storage apparatus having a data storage area storing encrypted data is modified to have plural encryption/decryption units, a computer cannot appropriately use the encrypted data storage area if a path including the encryption/decryption means is not adequately determined. In a computer system having a computer, two or more data storage apparatusesandarranged hierarchically, plural encryption/decryption modulesandon a path between the computerand a data storage area, and a management computerfor managing the data storage apparatuses and the like, if there is an interoperability between the encryption/decryption modulesandand the data storage areais encrypted by the first encryption/decryption module, the computeraccesses the data storage areausing the second encryption/decryption module(or an n-th encryption/decryption module closer to the computer than the second encryption/decryption module), rather than the first encryption/decryption module.