Magnetic recording device

Details Magnetic recording device Magnetic recording device

2006-01-31

2008-08-26

Wellington, Andrea (Department: 2627)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

C360S046000

Reexamination Certificate

active

07417818

ABSTRACT:
A magnetic recording device capable of reducing the size of a writing circuit and the power consumption by readily adjusting the overshoot of the write current pulses is provided. Two or more transmission lines having different characteristic impedances are provided between an output driver having an impedance Zsand a magnetic head, the transmission lines are formed so that the characteristic impedances Z1, Zn−1, and Zn(n≧2) thereof on the output driver side are higher than those on the magnetic recording head side (Z1>Zn−1>Zn), and the impedance Zsof the output driver is equal to or higher than the characteristic impedance Z1of the transmission line.

REFERENCES:
patent: 6798597 (2004-09-01), Aram et al.
patent: 2005/0254159 (2005-11-01), Venca et al.
patent: 2001-020601 (2001-07-01), None
patent: 2001-202601 (2001-07-01), None
patent: 2005-267700 (2005-09-01), None
patent: 2005-269336 (2005-09-01), None

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