Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2005-04-12
2005-04-12
Tran, Thang V. (Department: 2653)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
C360S078040, C360S078070, C360S060000
Reexamination Certificate
active
06879460
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.
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Hamaguchi Takehiko
Matsushita Toru
Takano Hisashi
Tomiyama Futoshi
Tsuchiya Reijiro
Hitachi Global Storage Technologies Japan Ltd.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Tran Thang V.
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