Record carrier containing information in an optically readable i

Dynamic information storage or retrieval – Storage medium structure – Optical track structure

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369109, G11B 700

Patent

active

049301160

ABSTRACT:
A record carrier is described having an optically readable information structure comprising information areas arranged in information tracks and spaced from each other by intermediate areas. The information areas have a first, comparatively large, phase depth and the intermediate areas have a second, comparatively small, phase depth thereby providing an optimum information signal and an optimal tracking signal during reading.

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