Peak detection method and apparatus therefor

Details Peak detection method and apparatus therefor Peak detection method and apparatus therefor

1991-07-31

1994-02-15

Pascal, Robert J.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Selective erase recording

360 46, G11B 502

Patent

active

052872289

ABSTRACT:
The time interval/amplitude level difference between sequential peaks in waveforms of first reproducing signals from a recording medium is detected and stored in a storage. The time interval/amplitude level difference between peaks in a waveform of a second reproducing signal from the recording medium is detected and compared with the time interval/amplitude level difference stored in the storage to thereby perform peak detection in the waveforms thereof. An original bit train of the first reproducing signal corresponding to a maximum-likelihood waveform selected among the waveforms of the first reproducing signals is given as a standardized signal. Data are provided to represent the time interval/amplitude level difference between the sequential peaks in the waveforms of the reproducing signals in a range of electromagnetic signal interference on the recording medium.

REFERENCES:
patent: 4227175 (1980-10-01), Newman
patent: 4644564 (1987-02-01), Dolivo et al.
patent: 4755891 (1988-07-01), Katoh et al.
patent: 4769597 (1988-09-01), Sano
patent: 5170299 (1992-12-01), Moon
"An Event-driven Maximum-Likelihood Peak Position Detector for Run-Length-Limited Codes in Magnetic Recording", IEEE Transactions on Magnetics, vol. MAG-17, No. 6, pp. 3337-3339, 1991.
"Signal Processing for High-Density Digital Magnetic Recording", IEEE, 1989, pp. 1-91-96.

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