Correcting non-linear distortions of optical information with a

Details Correcting non-linear distortions of optical information with a Correcting non-linear distortions of optical information with a

1994-12-13

1996-11-05

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369107, 3692753, 375233, G11B 700

Patent

active

055725031

ABSTRACT:
An optical disk device which uses a light spot for reproducing data, including photodetector, a decoder, and a non-linear equalizer provided between the photodetector and the decoder for correcting non-linear distortions in a reproduced signal from an optical disk. The non-linear equalizer includes a linear equalizer and a decision feedback equalizer provided after the linear equalizer. The non-linear equalizer includes a detector for detecting a signal on the basis of the output of the linear equalizer with the output of the detector being input to the decision feedback equalizer, the output of which is input to the detector along with the output of the linear equalizer in an additive manner.

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"Application of Digital Signal Processing", pp. 169-170, Institute of Electronics, Information and Communication Engineers of Japan.

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