System for compensating a phase difference between magnetic trac

Details System for compensating a phase difference between magnetic trac System for compensating a phase difference between magnetic trac

1975-11-26

1977-05-10

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Electronically correcting phasing errors between related...

360 47, G11B 543

Patent

active

040232034

ABSTRACT:
This invention discloses a multi-track recorded information regenerating system which regenerates signals recorded on a plurality of tracks and which composes and demodulates these recorded signals so as to obtain a read output signal. The characteristic feature of the present invention is to provide a delay circuit, which delays the regenerated signals in each track. Three signals are synthesized; that is, a first signal is synthesized from two regenerated signals from two tracks, and a second and a third signal are synthesized from one of the regenerated signals from two tracks and one of the outputs of the delay circuit. These synthesized signals are detected by an error checking circuit to determine whether or not said synthesized signals represent correct information recorded on the magnetic track, and the synthesized signal having the correct information is used as the read output of the multi-track recording system.

REFERENCES:
patent: 2813259 (1957-11-01), Burkhart
patent: 3078448 (1963-02-01), O'Brien
patent: 3188614 (1965-06-01), VanBerkel
patent: 3303482 (1967-02-01), Jenkins
patent: 3320598 (1967-05-01), Star
patent: 3354446 (1967-11-01), Avril et al.

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