Magnetic head driver circuit and magnetic storage device

Details Magnetic head driver circuit and magnetic storage device Magnetic head driver circuit and magnetic storage device

2006-02-28

2006-02-28

Faber, Alan T. (Department: 2651)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

C360S066000, C360S068000

Reexamination Certificate

active

07006314

ABSTRACT:
A driver circuit drives a write element for magnetic recording, and permits high speed recording while preventing noise from entering an adjacent read element. An H bridge circuit, which causes a write current to flow, in accordance with a write drive signal, in a write coil of the write element, is provided with an overshoot circuit, in which positive and negative power sources are of the same potential. It makes a flyback voltage vertically symmetrical. Further, a feedback circuit is provided which monitors the voltages at both ends of the write coil, and prevents a variation in the common potential of the write coil. Terminal resistors are further provided to prevent the effects of reflection in a transmission line, and to prevent a change in the write waveform.

REFERENCES:
patent: 6014281 (2000-01-01), Contreras
patent: 6121800 (2000-09-01), Leighton et al.

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