Data transducer position control system for data transfer appara

Details Data transducer position control system for data transfer appara Data transducer position control system for data transfer appara

1989-05-30

1992-01-07

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7708, G11B 5596

Patent

active

050796542

ABSTRACT:
A disklike record medium such as a magnetic data storage disk, and a closed-loop servo control system for positioning a transducer such as a magnetic read/write head on any of a multiplicity of concentric tracks on the record medium. The tracks on the record medium are divided into a plurality of groups, and each track of each group has a different code character prerecorded thereon as in the form of discretely magnetized regions. All the groups of tracks have the same set of code characters assigned thereto for the simplicity of the code characters. Read by the transducer, the code characters enable the control system to individually identify all the tracks of all the groups. In response to an externally supplied track command indicative of a destination track on which the transducer is to be positioned, and to internally supplied track code data, the control system causes translation of the transducer from a departure track to the destination track during track seek operations.

REFERENCES:
patent: 4424543 (1984-01-01), Lewis et al.
patent: 4499511 (1985-02-01), Sugaya
patent: 4516162 (1985-05-01), West
patent: 4590526 (1986-05-01), Loatt et al.
patent: 4631606 (1986-12-01), Sugaya
patent: 4823212 (1989-04-01), Knowles et al.
patent: 4825310 (1989-04-01), Song

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