Write driver circuit for driving a magnetic head

Details Write driver circuit for driving a magnetic head Write driver circuit for driving a magnetic head

2005-11-22

2005-11-22

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

C360S067000, C360S068000, C360S031000, C360S060000, C360S061000, C327S108000, C327S124000, C327S132000, C327S423000

Reexamination Certificate

active

06967797

ABSTRACT:
A write driver circuit for driving a magnetic head applicable to a variety of magnetic heads or magnetic storage media is disclosed. The circuit includes a write current generating section for generating plural types of write current for magnetizing a predetermined area of a magnetic storage medium in a predetermined direction; a switching signal generating section for generating a switching signal for switching among the write currents; a switching section for changing the direction of magnetization through the magnetic head by switching among the write currents based on the switching signal; and an overshoot current generating section for generating an overshoot current for instantaneously increasing the write current when the direction of magnetization is changed by the switching section; wherein the circuit further includes an overshoot current generation signal producing section, and is designed so that the overshoot current is generated based on an overshoot current generation signal produced thereby.

REFERENCES:
patent: 5287231 (1994-02-01), Shier et al.
patent: 5822141 (1998-10-01), Chung et al.
patent: 6215607 (2001-04-01), Ngo
patent: 6236246 (2001-05-01), Leighton et al.
patent: 6429987 (2002-08-01), Cheng
patent: 6496317 (2002-12-01), Lacombe
patent: 2001-101608 (2001-04-01), None

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