Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1991-12-06
1993-02-02
Dixon, Joseph L.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 7804, 360 7814, 360 7704, G11B 5596
Patent
active
051842572
ABSTRACT:
A disk drive includes a data recording disk and disk head for recording data and reproducing data from the disk. Arms support the disk head. An actuator drives the arm moving the disk head to a predetermined data recording track of the disk. A spindle motor rotates the disk. An actuator unit moves the disk head to select a track on the disk. First positioning data for positioning the disk head is provided on at least one data surface. Second positioning data is provided at at least one data surface. A control is coupled to the actuator for controlling the positioning of the disk head and the searching of the disk in response to the first and second positioning data. The second positioning data may be located on positioning tracks not used for data. The second positioning information as part of a second positioning data is stored. The disk head position is compensated by the stored second positioning information which is superimposed with the first position data.
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Endo Ken-ichi
Gomi Akihiro
Ichikawa Takashi
Kaburagi Chiharu
Koga Yoshiro
Dixon Joseph L.
Robertson David L.
Seiko Epson Corporation
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