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:
Jan. 17, 2012
Filed:
Dec. 16, 2009
Yoshihiko Maeda, Kanagawa, JP;
Masaomi Ikeda, Kanagawa, JP;
Nobuhiro Kuwamura, Kanagawa, JP;
Toshihiko Tsunokawa, Kanagawa, JP;
Akira Osaki, Kanagawa, JP;
Yoshihiko Maeda, Kanagawa, JP;
Masaomi Ikeda, Kanagawa, JP;
Nobuhiro Kuwamura, Kanagawa, JP;
Toshihiko Tsunokawa, Kanagawa, JP;
Akira Osaki, Kanagawa, JP;
Hitachi Global Storage Technologies, Netherlands B.V., Amsterdam, NL;
Abstract
A method for dividing a data area on a disk into a plurality of concentric zones and determining a format for each zone so that data tracks in the zone have the same number of data sectors. The method includes dividing a data area into a plurality of zones with provisional boundaries. The method also includes determining a linear recording density for a selected zone. The method further includes selecting the number of data sectors per data track corresponding to the determined linear recording density from specified values. Moreover, the method includes resetting a boundary of the zone at a new boundary shifted from the provisional boundary according to a selected value.