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:
Nov. 07, 2006
Filed:
Aug. 29, 2003
Applicants:
Masaomi Ikeda, Fujisawa, JP;
Nobuyuki Kitazaki, Fujisawa, JP;
Kenji Ogasawara, Fujisawa, JP;
Hirofumi Yanase, Fujisawa, JP;
Inventors:
Masaomi Ikeda, Fujisawa, JP;
Nobuyuki Kitazaki, Fujisawa, JP;
Kenji Ogasawara, Fujisawa, JP;
Hirofumi Yanase, Fujisawa, JP;
Assignee:
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B 21/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The read/write offset between the read head and write head is used to determine the head width ratio between the read head width and write head width. The servo information is written onto the magnetic disk in accordance with the APC value and track pitch that are derived from the determined head with ratio.