Reproducing head and magnetic disk drive

Details Reproducing head and magnetic disk drive Reproducing head and magnetic disk drive

2005-12-22

2008-08-05

Wellington, Andrea (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

C360S322000, C360S316000, C360S315000, C360S314000

Reexamination Certificate

active

07408730

ABSTRACT:
A reproducing head including a read element, first and second electrodes provided at the opposite ends of the read element, a ground electrode provided between the first and second electrodes, a first constant current circuit for passing a first constant current between the first electrode and the ground electrode, and a second constant current circuit for passing a second constant current between the second electrode and the ground electrode. The reproducing head further includes a computing unit connected to the first and second electrodes for synthesizing an output from the first electrode and an output from the second electrode, and a storing unit having a table showing the relation between a synthetic value computed by the computing unit and the outputs from the first and second electrodes.

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patent: 4660113 (1987-04-01), Nomura et al.
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patent: 5751521 (1998-05-01), Gill
patent: 6185079 (2001-02-01), Gill
patent: 2006/0002032 (2006-01-01), Li et al.
patent: 59-033616 (1984-02-01), None
patent: 01-296422 (1989-11-01), None
patent: 10-149519 (1998-06-01), None

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