Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1990-10-25
1992-01-21
Heinz, A.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 75, 360 7813, 369 32, 318685, 318696, G11B 555, G11B 2108
Patent
active
050832301
ABSTRACT:
A disk recording/reproducing apparatus is provided with a reference-point detection capability, including a device for stopping a carriage at an originating point. A control section supplies pulses to a carriage driving portion to move a carriage on which a recording/reproducing head is mounted. When the reference position detection section detects that the carriage has reached the originating point stopping device, the number of carriage-driving pulses expended is automatically stored in a memory in the form of position information. The control section uses an adjustment disk for positioning the recording/reproduction head and storing the position data. The control section further supplies the required number of pulses to move the carriage driving section to an Nth track on the adjustment disk. When the carriage reaches the Nth track, the control section again stores the number of carriage-driving pulses expended. As a result, the memory contains the physical originating-point information, and the centered-position information corresponding to the Nth track on the adjustment disk. The control section thus operates to subtract the physical originating point information from the centered-position information of the Nth track when the unit is energized, thereby moving the carriage to the designated track by using the subtracted difference.
REFERENCES:
patent: 4122503 (1978-10-01), Allan
patent: 4149199 (1979-04-01), Chick et al.
IBM TDB, vol. 19, No. 4, Porter et al., 9/76, pp. 1393-1395.
Garland Steven R.
Heinz A.
Kabushiki Kaisha Toshiba
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