Method and device for recording and reproducing tracking informa

Details Method and device for recording and reproducing tracking informa Method and device for recording and reproducing tracking informa

1981-04-09

1983-07-05

Faber, Alan

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 50, 369111, 369275, 369277, 360 77, 250202, 318577, G11B 2110

Patent

active

043922198

ABSTRACT:
A method for recording and reproducing information characterized in that an information train in which synchronizing signals are arrayed at equal time intervals between information signals is recorded in an information track on a recording medium which is wobbled in synchronism with the synchronizing signals and at a frequency integral times the frequency of the synchronizing signals, that the information train recorded in the information track is read out by read-out means, and that a position of the read-out means is controlled on the basis of the information train read out. The wobbling waveform is 90.degree. out of phase with a harmonic component of the synchronizing signals.

REFERENCES:
patent: 3931460 (1976-01-01), Watson
patent: 3985952 (1976-10-01), Adler
patent: 4067044 (1978-01-01), Maeda
patent: 4223187 (1980-09-01), Yonezawa
patent: 4223347 (1980-09-01), Bouwhuis

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