Tracking control system with pilot signal phase setting circuitr

Details Tracking control system with pilot signal phase setting circuitr Tracking control system with pilot signal phase setting circuitr

1987-11-03

1990-08-21

Faber, Alan

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 18, 360 70, 360 7311, G11B 5584, G11B 15467

Patent

active

049511629

ABSTRACT:
In an apparatus for recording an information signal on a recording medium forming many parallel tracks on the medium and for reproducing the information signal from the medium, a tracking control system is arranged to record a pilot signal of a given frequency along with the information signal in the first of the many tracks; to have the pilot signal also recorded in second and third tracks adjoining the first track on both sides thereof but at pilot signal phases shifted from the pilot signal phase of the first track to equal degrees in the directions opposite to each other at parts of the second and third tracks aligned perpendicularly to the longitudinal direction of the first track; and, in reproducing the information signal, the position of the recording medium and that of a reproducing head relative to each other are controlled on the basis of the pilot signal of the given frequency reproduced by the reproducing head from the first track along with the information signal.

REFERENCES:
patent: 4110799 (1978-08-01), Bergmans et al.
patent: 4213148 (1980-07-01), Clemens
patent: 4416002 (1983-11-01), Oguino et al.
patent: 4432026 (1984-02-01), Coleman, Jr.
patent: 4488188 (1984-12-01), Hansen et al.
patent: 4490756 (1984-12-01), Dost et al.
patent: 4647990 (1987-03-01), Sasamura

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