Magnetic recording and reproducing apparatus

Details Magnetic recording and reproducing apparatus Magnetic recording and reproducing apparatus

1991-06-27

1993-12-14

Pascal, Robert J.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Address coding

360 7702, 360 51, G11B 209

Patent

active

052708780

ABSTRACT:
In a magnetic recording and reproducing apparatus, in order to prevent the address code data for identifying the cylinder number of a recording medium from producing continuous erase data, address code data with a gray code arrangement is modulated by a predetermined modulation method, and the modulated address code data is recorded on the recording medium. In this case, address clocks are recorded on the recording medium at predetermined intervals by the magnetization change in a predetermined direction. After the address clocks are recorded, the address data are recorded by the magnetization change in a direction opposite to the predetermined direction.

REFERENCES:
patent: 4142209 (1979-02-01), Hedlund et al.
patent: 4151571 (1979-04-01), Cardot et al.

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