Recording/reproducing apparatus and method

Details Recording/reproducing apparatus and method Recording/reproducing apparatus and method

1999-08-20

2000-11-14

Hindi, Nabil

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4413, 369 4435, G11B 700

Patent

active

061479454

ABSTRACT:
An information recording/reproducing apparatus wherein exact reproduction of both wobbled address information and sync information can be realized in a recording mode as well as in a reproduction mode. The apparatus comprises first and second detectors for detecting two diametrical side portions of each track on a recording medium where a pregroove is modulated correspondingly to address information and sync information of mutually different frequency bands; a calculator for calculating a normalized track information signal on the basis of the outputs of the first and second detectors; and a third detector for detecting the address information and/or the sync signal on the basis of the output of the calculator.

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