Positioning of a head relative to a plurality of tracks

Details Positioning of a head relative to a plurality of tracks Positioning of a head relative to a plurality of tracks

1996-12-06

1998-09-08

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7712, 360 7802, G11B 558

Patent

active

058053727

ABSTRACT:
An apparatus is disclosed for positioning a head relative to a plurality of tracks running parallel to each other in their longitudinal direction on a record carrier. The apparatus comprises a position detection unit for detecting the position of the head in a transverse direction, which has an output for supplying a first and a second position signal when the head is positioned onto each of two tracks. A memory is present for storing the first and second position signals. In a calibration mode of operation, a control signal generator generates a control signal to position the head onto one of the tracks and the memory stores the position signal generated by the position detection means. The control signal generator subsequently generates a second control signal so as to position the head onto the other track. The memory stores the second position signal generated by the position detection means. These position signals are recalled from memory when the apparatus switches from one track to the other, to effect an immediate positioning of the head to the desired track.

REFERENCES:
patent: 4318141 (1982-03-01), Haynes
patent: 4472750 (1984-09-01), Klumpp et al.
patent: 4586094 (1986-04-01), Chambors et al.
patent: 4903151 (1990-02-01), Mizukami
patent: 5121270 (1992-06-01), Alcudia et al.
patent: 5379165 (1995-01-01), Pahr
patent: 5457586 (1995-10-01), Solhjell
patent: 5488525 (1996-01-01), Adams et al.

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