Track dependent variable level qualification pulse detector

Details Track dependent variable level qualification pulse detector Track dependent variable level qualification pulse detector

1992-07-14

1994-02-15

Hajec, Donald

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Pulse crowding correction

360 46, 360 53, G11B 509

Patent

active

052872270

ABSTRACT:
A pulse qualification apparatus and method provides for qualifying signal pulses from a raw data signal by comparison to a variable qualification level. Pulse qualification is done on a read signal developed by moving a magnetic transducer relative to addressable portions of a magnetic disk. A qualification level generator circuit generates a qualification level signal which varies in value depending upon the addressed portion of the magnetic disk. A threshold detector is used in qualifying pulses from a transducer read signal by comparison to the qualification level signal to generate an encoded pulse signal representing occurrences of qualifying pulses.

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National Semiconductor, "DP8464B Disk Pulse Detector" pp. 3-3-3-25, No Date Available.

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