Head amplifier circuit with function for degaussing residual...

Details Head amplifier circuit with function for degaussing residual... Head amplifier circuit with function for degaussing residual...

2005-08-31

2008-12-02

Nguyen, Hoa T (Department: 2627)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

C360S046000, C360S067000, C360S068000, C360S075000

Reexamination Certificate

active

07460324

ABSTRACT:
In a data-recording mode, a driver circuit supplies a recording head with a recording current corresponding to write data. In a degaussing mode, the driver circuit supplies the recording head with a degaussing current for eliminating the residual magnetism of the head as the recording current. The degaussing current has a rising period and falling period set longer than those of the recording current supplied in the data-recording mode.

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