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:
Oct. 25, 2011
Filed:
May. 15, 2008
Applicants:
Mamoru Shoji, Osaka, JP;
Takashi Ishida, Kyoto, JP;
Kohei Nakata, Osaka, JP;
Inventors:
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical diskis of a type in which information is recorded on a groove track, and an optical diskis of a type in which information is recorded on a land track. The optical diskhas a control data area, and a data recording areain which user data is recorded. The optical diskhas a control data area, and a data recording areain which user data is recorded. A code for indicating the groove track or the land track onto which tracking servo control is executed is provided both in the control data areaof the optical disk, and in the control data areaof the optical disk