Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Patent
1979-01-26
1990-05-29
Faber, Alan
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
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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Eason Leroy
Faber Alan
Garland Steven R.
Tamoshunas Algy
U.S. Philips Corporation
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