Disk drive interface combining a magneto-resistive read and indu

Details Disk drive interface combining a magneto-resistive read and indu Disk drive interface combining a magneto-resistive read and indu

1991-10-18

1995-07-04

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 46, 360 68, 360113, G11B 509, G11B 502

Patent

active

054305845

ABSTRACT:
A single integrated circuit chip provides an interface to both magneto-resistive read elements and inductive write elements of a plurality of read/write heads of a disk drive mass data storage system. Separate multiplexers and current sources are used for the read and write channels. The read element of a head selected by one of the multiplexers is preamplified on the chip. A write driver circuit is also provided, being connected to a write element of a head selected by the other of the multiplexers.

REFERENCES:
patent: 3656130 (1972-04-01), Bucklin, Jr. et al.
patent: 3911484 (1975-10-01), Mutou et al.
patent: 4724495 (1988-02-01), Hedberg et al.
patent: 4777544 (1988-10-01), Brown et al.
patent: 4833559 (1989-05-01), Belk
patent: 5122915 (1992-06-01), Klein et al.

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