Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2006-03-06
2008-10-21
Nguyen, Hoa T (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
Reexamination Certificate
active
07440222
ABSTRACT:
A magnetic recording apparatus includes a composite magnetic head which includes a recording head and a reproducing head; a magnetic storage medium; a discrete area; and a correction information recording area. Positioning correction information is able to be written in the correction information recording area at each track center. The apparatus also includes a center shift amount detection area. Center shift amount detection information is previously recorded in the center shift amount detection area. The center shift amount detection information is for measuring a center shift amount which indicates a relative distance between a tracking center and an actual track center of the discrete area when either the recording head or the reproducing head is positioned at a track center.
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Chinese Office Action dated Feb. 22, 2008 corresponding to U.S. Appl. No. 11/368,734, filed on Mar. 6, 2006.
Nakamura Hiroaki
Takakura Shinji
Amin Turocy & Calvin LLP
Habermehl James L
Kabushiki Kaisha Toshiba
Nguyen Hoa T
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