Optical disc media type confirmation method

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval

Reexamination Certificate

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Reexamination Certificate

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07869323

ABSTRACT:
The present invention relates to a method for preventing a problem of collision between an optical system and a media by suggesting a method for confirming the kind of the medium prior to its operation in a drive having a compatibility with respect to a method for storing a near field optical information using SIL and a method for storing a remote field optical information below the existing blu-ray disk. The present invention can distinguish from an inserted optical disk if a compatible drive/pickup is in a near-field method, and confirm if the inserted optical disk is operable in a near-field method drive/pickup in advance, also.

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