Signal separation in magnetic recording using buried servo

Details Signal separation in magnetic recording using buried servo Signal separation in magnetic recording using buried servo

1981-04-30

1983-06-28

Wolff, John H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 18, 360 62, G11B 2110

Patent

active

043909116

ABSTRACT:
A servo system provides track following servo information from a buried servo layer disposed under the data recording layer, using the same transducer for simultaneously reading the servo information and writing data. To prevent the voltage generated in the transducer while writing data from masking out the servo information, a dummy voltage having the same magnitude as the transducer voltage is connected so that it cancels the write data voltage in the head.

REFERENCES:
patent: 3404392 (1968-10-01), Sordello
patent: 3480739 (1969-11-01), Kinkel
patent: 4110799 (1978-08-01), Bergmans et al.
patent: 4313140 (1982-01-01), Keidl
patent: 4333114 (1982-06-01), Ohta

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