Optical disc and method of identifying recording layer

Details Optical disc and method of identifying recording layer Optical disc and method of identifying recording layer

2005-08-16

2008-01-29

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S275400

Reexamination Certificate

active

07324420

ABSTRACT:
An optical disc in which a physical address of each smallest recording unit and a recorded address increase or decrease on first and second recording layers, and a method of identifying the recording layers. Embodiments are provided for discs having first and second recording layers with a same or an opposite track spiral direction. Physical addresses of the smallest recording units and a recorded address are increased or decreased between an inner radius and an outer radius of a recording layer in a manner which enables a reproducing and/or a recording device to more rapidly reproduce and/or record data on the disc. A physical address of the smallest recording units on the first recording layer is made different from a physical address of the smallest recording units on the second recording layer.

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Japanese Office Action issued May 23, 2006 by the Japan Patent Office re: Japanese Application No. 2002-105750.
Japanese Office Action from corresponding Japanese Patent Application No. 2002-105750.

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