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:
Aug. 30, 2011
Filed:
Aug. 05, 2008
Applicants:
Hiroshi Ueda, Nara, JP;
Motoshi Ito, Osaka, JP;
Takashi Ishida, Kyoto, JP;
Yoshikazu Yamamoto, Osaka, JP;
Mamoru Shoji, Osaka, JP;
Inventors:
Hiroshi Ueda, Nara, JP;
Motoshi Ito, Osaka, JP;
Takashi Ishida, Kyoto, JP;
Yoshikazu Yamamoto, Osaka, JP;
Mamoru Shoji, Osaka, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A multi-layered information recording medium comprising a plurality of recording layers, a user data area for recording user data, provided in at least two of the plurality of recording layers, and a defect list storing area for storing a defect list. When at least one defective area is detected in the user data area, the defect list is used to manage the at least one defective area.