Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1993-08-17
1994-04-26
Smith, Jerry
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 7705, 360 75, G11B 5596
Patent
active
053072189
ABSTRACT:
A magnetic disk apparatus using a servo-surface servo and a data-surface servo is disclosed which comprises a servo disk which is disposed on a rotating axis and which has a servo surface on which first servo information is written and a data disk which is disposed on the rotating axis and which has a data surface. A servo head is provided for reading the first servo information from the servo disk and a read/write head is provided which works in association with the servo head for reading and writing information from and to the data surface. Structure is provided to generate a second servo information to be written on the data surface, to command a write timing of the second servo information, to control the write operation, and to control the positioning of the read/write head position. Thus, according to servo information being read from the servo head, servo information to be written to the data surface is generated and written to the data surface.
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IBM Disk Storage Technology, "Servo Design for an Eight Inch Disk File", Commander et al., Feb. 1980, pp. 89-97.
Kitamura Shunji
Ogawa Tomihisa
Garland Steven R.
Kabushiki Kaisha Toshiba
Smith Jerry
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