Method and apparatus for detecting an original signal from a dat

Details Method and apparatus for detecting an original signal from a dat Method and apparatus for detecting an original signal from a dat

1997-06-09

1999-06-29

Chin, Stephen

Pulse or digital communications

Equalizers

375229, 375231, 375232, 375233, H03H 730

Patent

active

059178558

ABSTRACT:
A method and apparatus for detecting an original signal of a storage device uses different adaptive equalization methods, depending on a pattern of data reproduced from the data storage device. Coefficient adaptation by a partial response target equalizer (PREQ) is performed through non-linear combination according to the pattern of data reproduced from the data storage apparatus, so that the effect of the non-linear noise (which impedes the decision of the coefficient for an adaptive equalizer) is minimized. A signal having serious non-linear distortion and a high level of ISI can be detected reliably.

REFERENCES:
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patent: 5132988 (1992-07-01), Fisher et al.
patent: 5572262 (1996-11-01), Ghosh
patent: 5623474 (1997-04-01), Oshio et al.
patent: 5781590 (1998-07-01), Shiokawa et al.
Cherubini, Nonlinear Self-Training Adaptive Equalization for Partial-Response System, IEEE, vol. 42, No. 2/3/4, pp. 367-376, Feb.-Apr. 1994.

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