Method for restoring data stored on an optical disc and...

Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – By medium defect indicative control signal

Reexamination Certificate

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C369S053150

Reexamination Certificate

active

07911895

ABSTRACT:
The current invention is directed to a method and optical storage media reading device for restoring data stored along a data storage path of an optical storage media, the data being stored on the optical storage media and being at least in part unreadable by a conventional optical storage media reading device due to chemical or physical changes within a recording layer or a reflective layer of the optical storage media. The method and device includes detecting deformations of a shape of a groove and lands of the groove extending along the data storage path, the deformations having been generated by a laser beam during a recording process of the optical storage media, and determining the data to be restored from the detected deformations and lands.

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