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. 23, 2014
Filed:
Feb. 06, 2007
Applicants:
Atsushi Hagiwara, Kanagawa, JP;
Naoya Morita, Kanagawa, JP;
Inventors:
Atsushi Hagiwara, Kanagawa, JP;
Naoya Morita, Kanagawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04K 1/00 (2006.01); G06F 21/80 (2013.01); G06F 21/85 (2013.01);
U.S. Cl.
CPC ...
G06F 21/85 (2013.01); G06F 2221/2107 (2013.01); G06F 21/80 (2013.01);
Abstract
A disclosed data encoding apparatus includes: an arbitrary number of storage units; a data transfer control unit dividing input data into data blocks in accordance with the arbitrary number of storage units and transferring the data blocks to each storage unit; and encoding units having the same number as the storage units, the encoding units encoding the data blocks using a different cryptographic key for each storage unit while the data blocks are transferred by the data transfer control unit, wherein each storage unit stores the data blocks encoded by the encoding units.