Optical recording medium with power calibration areas and a...

Dynamic information storage or retrieval – Systems having plural physically distinct independent tracks... – Having layered storage medium

Reexamination Certificate

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C369S047270

Reexamination Certificate

active

07924677

ABSTRACT:
In an optical recording medium having a plurality of recording layers on which information can be recorded by irradiating a laser beam from one side thereof, an optimum recording power to each of the recording layers can be determined. The optical recording medium has a plurality of recording layers on which information can be recorded by irradiating a laser beam from one side thereof, and each of the recording layers has a power calibration area (PCA) for optimizing the intensity of the laser beam.

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