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. 12, 2005
Filed:
Oct. 09, 2003
Futoshi Tomiyama, Hachioji, JP;
Takehiko Hamaguchi, Fuchu, JP;
Toru Matsushita, Kokubunji, JP;
Hideki Zaitsu, Kokubunji, JP;
Reijiro Tsuchiya, Fujisawa, JP;
Hisashi Takano, Kodaira, JP;
Futoshi Tomiyama, Hachioji, JP;
Takehiko Hamaguchi, Fuchu, JP;
Toru Matsushita, Kokubunji, JP;
Hideki Zaitsu, Kokubunji, JP;
Reijiro Tsuchiya, Fujisawa, JP;
Hisashi Takano, Kodaira, JP;
Hitachi Global Storage Technologies Japan, Ltd., Kanagawa-ken, JP;
Abstract
A magnetic recording disk drive can prevent the deterioration of the head off-track characteristics and the reduction of the drive performance even when an erase band asymmetry resulting from a skew angle exists. A write inhibit slice value for an inner peripheral side offset is made smaller than a write inhibit slice value for an outer peripheral side offset at a position where an erase band on the inner peripheral side is greater than an erase band on the outer peripheral side, so that the adjacent track on the outer peripheral side cannot easily erase a data track. On the contrary, the inner periphery and the outer periphery are paraphrased at a position where the erase band on the outer peripheral side is greater than the erase band on the inner peripheral side.