Disc drive having a serial preamplifier interface with broadcast

Details Disc drive having a serial preamplifier interface with broadcast Disc drive having a serial preamplifier interface with broadcast

1997-05-29

1999-11-16

Kim, W. Chris

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

360 46, G11B 502, G11B 509

Patent

active

059868414

ABSTRACT:
A disc drive includes a recording head preamplifier circuit having a plurality of preamplifiers. Each preamplifier includes a receiver circuit and a preamplifier enable circuit. The receiver circuit receives a serial command having command address bits. The preamplifier enable circuit is operatively coupled to the receiver circuit and generates an enable output for enabling the preamplifier when the command address bits match a first predetermined logic pattern which is unique to chat preamplifier and when the command address bits match a second predetermined logic pattern which is universal to the plurality of preamplifiers.

REFERENCES:
patent: 4488185 (1984-12-01), Toba
patent: 4768111 (1988-08-01), Kranabetter
patent: 5293278 (1994-03-01), Pahr
patent: 5373402 (1994-12-01), Price et al.
patent: 5488518 (1996-01-01), Shier
patent: 5726821 (1998-03-01), Cloke et al.
patent: 5771076 (1998-06-01), Kim

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