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. 01, 2006
Filed:
Apr. 07, 2004
Applicants:
Koji Ozaki, Kato, JP;
Kazuyuki Mikawa, Kato, JP;
Inventors:
Koji Ozaki, Kato, JP;
Kazuyuki Mikawa, Kato, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus for recording and reproducing digital information using a disk recording medium in which a data recording area is divided into plural zones in the radial directions, and defect information is managed for each of the plural zones. The apparatus preferably includes means for formatting the disk recording medium; and means for controlling the order of format by informing the formatting means of a zone to be formatted next at an interval of one or more zones and of the neighboring zones if the number of defects in the zone is higher than the threshold value.