Method of reading and/or writing information and apparatus for c

Details Method of reading and/or writing information and apparatus for c Method of reading and/or writing information and apparatus for c

1979-11-05

1982-01-05

Wolff, John H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 84, 360109, G11B 2110

Patent

active

043097308

ABSTRACT:
Method and apparatus for positioning magnetic heads in a two-head helical scan video recorder, suitable control signals being generated for making the heads follow the tracks by means of piezoelectric transducers. The control signals applied to the two transducers are compared and when these control signals deviate from each other more than to a predetermined extent the one transducer receives the same control signal as the other transducer, so as to ensure that the two heads follow consecutive tracks.

REFERENCES:
patent: 4165523 (1979-08-01), Hathaway
patent: 4197565 (1980-04-01), Watanabe

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