Digital signal recovery apparatus with minimized high frequency

Details Digital signal recovery apparatus with minimized high frequency Digital signal recovery apparatus with minimized high frequency

1989-11-21

1992-02-18

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Pulse crowding correction

371 43, 375101, G11B 509, G06F 1110, H03D 106

Patent

active

050899171

ABSTRACT:
Apparatus for regenerating a coded digital signal, comprising an interference cancellation equalizer for cancelling an interference component from an input digital signal and a decoder. The equalizer includes a compensator for high frequency compensating the input digital signal, an extractor for extracting intercode interference from the compensated digital signal, and a subtracter for subtracting the extracted intercode interference from the input digital signal to produce a waveform equalized signal. The decoder recovers the original digital signal as a function of the correlation or samples of the waveform equalized signal.

REFERENCES:
patent: 3621139 (1971-11-01), Gibson
patent: 4137556 (1979-01-01), Sessa
patent: 4885646 (1989-12-01), Kanota et al.
patent: 4984099 (1991-01-01), Kanota et al.
FIG. 2 of Applicant's Disclosure, Admitted Prior Art.
"Application of Partial-Response Channel Coding to Magnetic Recording Systems," H. Kobayashi et al., Journal of Res. and Dev., Jul. 1970, p. 368 et seq.
"The Effects of Nonlinear Distortion on Class IV Partial Response," P. Newby et al., IEEE Transactions on Magnetics, vol. Mag. 22, No. 5, Sep. 1986, p. 1203 et seq.

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