Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
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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Maeda Takeshi
Ouchi Yasuhide
Saito Atsushi
Satoh Naoki
Sugiyama Hisataka
Chu Kim-Kwok
Epps Georgia Y.
Hitachi , Ltd.
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