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. 13, 2008
Filed:
Jan. 22, 2003
Applicants:
Tatsuya Inokuchi, Tokyo, JP;
Yoichiro Sako, Tokyo, JP;
Shunsuke Furukawa, Tokyo, JP;
Takashi Kihara, Chiba, JP;
Inventors:
Tatsuya Inokuchi, Tokyo, JP;
Yoichiro Sako, Tokyo, JP;
Shunsuke Furukawa, Tokyo, JP;
Takashi Kihara, Chiba, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03M 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A recording medium including an area in which data that has been encoded with a first error correction code is recorded. Data that can be decoded with a second error correction code that is different from the first error correction code is recorded to the area along with the data that has been encoded with the first error correction code. The data that can be decoded with the second error correction code composes at least part of encryption key data.