Adjustable write equalization for tape drives

Details Adjustable write equalization for tape drives Adjustable write equalization for tape drives

1992-02-18

1993-11-30

Mis, David

Dynamic magnetic information storage or retrieval

General processing of a digital signal

In specific code or form

360 25, G11B 509

Patent

active

052670961

ABSTRACT:
A write equalization circuit that includes a data encoder for producing a binary data signal wherein a 1 is represented by a transition at the start of a bit interval and a 0 is represented by no transition at the start of a bit interval, and a nominal pulse generating circuit for producing nominal equalization pulses respectively synchronized with predetermined 0's in the binary signal. Adjusting circuitry responsive to the binary data signal and the nominal equalization pulses produces a write data signal that includes equalization pulses having a width and location in bit intervals that remain substantially constant with changes in component delays due to changing temperature and voltage, wherein the constant width and location of the equalization pulses are selected to achieve a predetermined suppression characteristic.

REFERENCES:
patent: 4618941 (1986-10-01), Linder et al.

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