Optical disk having data stored on a land portion and a groove p

Details Optical disk having data stored on a land portion and a groove p Optical disk having data stored on a land portion and a groove p

1997-02-28

1999-11-23

Hindi, Nabil

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

G11B 700

Patent

active

059912588

ABSTRACT:
An optical disk and its recording and playback method. The optical disk has a groove portion and a land portion, in which the land portion is at a distance of greater than or equal to 100 nm from the groove portion and the land portion has a land width greater than a groove width of the groove portion. The method includes recording the data on a groove portion and a land portion of the optical disk; and playing back the recorded data with a land reflectivity equal to groove reflectivity when the land portion is at a distance of greater than or equal to 100 nm from the groove portion and a land width of the land portion is greater than a groove width of the groove portion.

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