Method and device for recording data and erasing servo data

Details Method and device for recording data and erasing servo data Method and device for recording data and erasing servo data

2007-05-29

2007-05-29

Wong, K. (Department: 2627)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

C360S075000, C360S077120

Reexamination Certificate

active

10985815

ABSTRACT:
After a DC erasing is performed in a direction by permanent magnets on a servo signal recording part, servo signals are recorded in the signal recording area of the servo signal recording part by a magnetic field in the direction opposite to that of the DC erasing. Thus, in a recording method for a magnetic recording medium having a data signal recording part and the servo signal recording part on a magnetic layer, accurate servo signals can be recorded and reproduced even on the medium having the magnetic layer of 0.13 μm or smaller.

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