Patent ID: 6967797

Claim:
A write driver circuit for driving a magnetic head comprising: a write current generating section for generating plural types of write current to magnetize through a magnetic head 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 said plural types of write current generated by said write current generating section; a switching section for changing the direction of magnetization through said magnetic head by switching among said plural types of write current based on said switching signals generated by said switching signal generating section; and an overshoot current generating section for generating an overshoot current for instantaneously increasing said write current when the direction of magnetization is changed by said switching section; wherein said write driver circuit for driving a magnetic head further comprises an overshoot current generation signal producing section in addition to said switching signal generating section; said overshoot current is generated based on an overshoot current generation signal produced by said overshoot current generation signal producing section; and said overshoot current generation signal is produced separate from the generation of said switching signal.