Recording medium, its manufacturing method, mother disc for...

Details Recording medium, its manufacturing method, mother disc for... Recording medium, its manufacturing method, mother disc for...

2011-05-31

2011-05-31

Neyzari, Ali (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S277000

Reexamination Certificate

active

07952985

ABSTRACT:
A recording medium is provided and includes; a substrate having a first area formed with a first groove and a second area formed with a second groove, at least one information layer provided on the substrate, and a protecting layer provided on the information layer. Predetermined binary information has previously been recorded on the first groove and the first groove is shallower or narrower than the second groove.

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European Search Opinion dated Oct. 7, 2009, for corresponding European Patent Application 08011081.0-1232.

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