Method and apparatus for data pulse qualification wherein the am

Details Method and apparatus for data pulse qualification wherein the am Method and apparatus for data pulse qualification wherein the am

1996-04-24

1999-09-07

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 65, G11B 0509

Patent

active

059495979

ABSTRACT:
In a method and apparatus for qualifying peaks in a signal as representing data bits, the signal containing data bits superimposed with background signals, a peak is qualified as representing a data bit when a first derivative of the peak exceeds a threshold value simultaneously with the original signal exceeding a positive or negative threshold of a hysteresis comparator. The respective positive and negative thresholds of the hysteresis comparator are alternatingly and continually adjusted by setting the negative hysteresis threshold dependent on the amplitude of a most recent positive peak in the incoming signal, and setting the positive hysteresis threshold dependent on the amplitude of a most recent negative peak in the incoming signal.

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Circuit for detector/monitor stage of TDC 4100 streamer, of Tandberg Data ASA, Oslo, Norway.

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