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. 24, 2013
Filed:
Apr. 26, 2011
Applicant:
Yoshiharu Imamoto, Tokyo, JP;
Inventor:
Yoshiharu Imamoto, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A data processing apparatus acquires content, generates an encryption key by using an initial value written in an unwritten memory block in a write-once recording medium, encrypts the content by using the encryption key, and writes to the write-once recording medium the encrypted content and an address table for identifying the memory block storing the initial value used for generating the encryption key.
Imamoto, Yoshiharu. (2013). Data processing apparatus, data processing system, and method for controlling the same (U.S. Patent No. 8543840). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8543840
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