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:
Apr. 26, 2011
Filed:
Jun. 22, 2009
Hiromichi Ishibashi, Ibaraki, JP;
Shigeru Furumiya, Himeji, JP;
Atsushi Nakamura, Moriguchi, JP;
Junichi Minamino, Nara, JP;
Takashi Ishida, Yawata, JP;
Hiromichi Ishibashi, Ibaraki, JP;
Shigeru Furumiya, Himeji, JP;
Atsushi Nakamura, Moriguchi, JP;
Junichi Minamino, Nara, JP;
Takashi Ishida, Yawata, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An optical disk medium includes a track groove thereon. On the optical disk medium, information is recorded along the track groove on a block unit basis. The block unit has a predetermined length. The block unit having the predetermined length includes a number of sub-blocks that are arranged along the groove. A sub-block mark is provided within each of the sub-blocks and used to identify the sub-block.