Optical disc

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

Reexamination Certificate

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C369S044130, C369S047270

Reexamination Certificate

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07085221

ABSTRACT:
An optical disc includes a read-only area having a first wobble, which is a data wobble formed in the read-only area for only reading, a readable/writable area having a second wobble, which is different from the data wobble, and a connection area between the read-only area and the readable/writable area having a third wobble having the same frequency as one of the first and second wobbles.

REFERENCES:
patent: 6452897 (2002-09-01), Van Den Enden
patent: 6621772 (2003-09-01), Asano et al.
patent: 2002-260241 (2002-09-01), None
Japanese Office Action for Related Application No. 2002-275414.

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