Preamp circuit including a loopback mode for data storage...

Details Preamp circuit including a loopback mode for data storage... Preamp circuit including a loopback mode for data storage...

2008-12-22

2010-12-14

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

C360S031000

Reexamination Certificate

active

07852585

ABSTRACT:
A method for testing operation of a preamplifier circuit includes generating a first symbol, converting the first symbol into a write signal, transmitting the write signal to a write signal input of the preamplifier circuit, and looping the write signal back to a read signal output of the preamplifier circuit.

REFERENCES:
patent: 4887171 (1989-12-01), Rose
patent: 5530687 (1996-06-01), Yamaguchi
patent: 6304403 (2001-10-01), Ionescu
patent: 6424475 (2002-07-01), Bhandari et al.
patent: 6628467 (2003-09-01), Cyrusian
patent: 6765736 (2004-07-01), Ko et al.

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