Optical disk recording/reproducing apparatus

Details Optical disk recording/reproducing apparatus Optical disk recording/reproducing apparatus

1996-11-19

1998-07-14

Edun, Muhammad N.

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

369 48, 369124, 369 4434, G11B 700

Patent

active

057815216

ABSTRACT:
An optical disk recording/reproducing apparatus includes an optical pickup for recording information onto a disk and reproducing information from the disk; a playback signal processing unit for receiving electrical signals from the optical pickup and for outputting a focus control signal, a tracking control signal, and a high-frequency playback signal; an asymmetric equalizer for equalizing the high-frequency playback signal from the playback signal processing unit to compensate for the asymmetric playback characteristic of the optical pickup; and a channel bit signal playback unit for zero-crossing the equalized high-frequency playback signal from the asymmetric equalizer and for outputting it as a channel bit signal string of square wave.

REFERENCES:
patent: 5563864 (1996-10-01), Kobayashi et al.
patent: 5602816 (1997-02-01), Amada et al.

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