Using recorded data for auto calibration of fixed gain of a read

Details Using recorded data for auto calibration of fixed gain of a read Using recorded data for auto calibration of fixed gain of a read

1994-10-13

1995-11-14

Hajec, Donald T.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 41, G11B 509, G11B 502

Patent

active

054672317

ABSTRACT:
A method and apparatus for using a varying amplitude data signal from a data storage medium such as a magnetic disk or magnetic tape to calibrate the gain of the data signal amplifier to an optimal fixed gain. At initialization, amplified data signal peaks are detected over a data region of the data storage medium. The amplified signal peaks are compared to a predetermined reference. The signal amplifier gain is adjusted until only a few amplified signal peaks exceed the reference. The amplifier gain is then fixed at the final adjusted value.

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