Buried servo recording systems and methods

Details Buried servo recording systems and methods Buried servo recording systems and methods

1979-12-07

1982-03-02

Wolff, John H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360131, G11B 2110

Patent

active

043181414

ABSTRACT:
A single-gap transducer simultaneously senses recorded control or servo signals and record data signals. A magnetic medium used with this invention is preferably a single layer magnetic medium. The head gap length and pole-tip face length allow different portions of the pole pieces in a magnetic transducer to be utilized during the simultaneous read and record operations. The servo signals are preferably deep and hard recorded into the layer whereas the data signals are preferably pulse width limited and recorded adjacent the surface portion of the magnetic layer.

REFERENCES:
patent: 3404392 (1968-10-01), Sordello
patent: 3534344 (1970-10-01), Santana
patent: 3845500 (1974-10-01), Hart
IBM/IDB vol. 17, No. 2, Jul. '74, "Recording Servo Info. Below a Data Surface . . . ", by Schwarz.

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