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:
Jan. 24, 2012
Filed:
Apr. 07, 2008
Applicant:
Osamu Kawamae, Kawasaki, JP;
Inventor:
Osamu Kawamae, Kawasaki, JP;
Assignees:
Hitachi, Ltd., Tokyo, JP;
Hitachi-LG Data Storage, Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/32 (2006.01); H04L 29/06 (2006.01); G06F 12/14 (2006.01); G06F 11/30 (2006.01); G06F 9/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
To update the program, the file is updated by verifying according to a digital signature attached to the file having the program converted whether the file is not dishonestly falsified. To verify the digital signature, a time for verifying the signature can be shortened by verifying not the entire file but only a particularly important part, and an area for temporarily storing the file can be made small. Thus, the control can be performed to update only when the file is valid.