Optical disc media type confirmation method
AssigneeLG Electronics Inc.
InventorYun-Sup Shin
Life of this patent
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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.
Claims14
A method for confirming a recording media comprising:
- detecting a predetermined discriminating signal with at least one optical pickup of at least two optical pickups;
- determining if the predetermined recording media discriminating signal is redetected depending on if the discriminating signal is detected;
- and
- starting a recording/reproduction of data onto recording media using the corresponding optical pickup if the predetermined recording media discriminating signal is detected, wherein the current optical pickup is changed and if the predetermined discriminating signal is not detected, redetecting the predetermined recording medium discriminating signal, and
- wherein if the recording medium discriminating signal is not detected in a predetermined number of attempts, even if the current optical pickup is changed to the other optical pickup of the at least two optical pickups, the corresponding recording medium is ejected.
A method for confirming a recording media comprising:
- determining if a solid immersion lens (SIL) is placed on an optical pickup;
- detecting a predetermined discriminating signal on a recording medium depending on if the solid immersion lens is placed;
- determining if the predetermined recording media discriminating signal is redetected depending on if the discriminating signal is detected;
- and
- starting a recording/reproduction of data onto a recording media using the corresponding optical pickup if the predetermined recording media discriminating signal is detected,
- wherein the currently inserted recording medium discriminating signal is detected using a signal reproducing a free-pit at the header portion of the recording medium when a solid immersion lens (SIL) is not used with the current optical pickup, and
- wherein the currently inserted recording medium discriminating signal is detected using a push-pull signal when a solid immersion lens (SIL) is used with the current optical pick-up.
Dependencies are inferred from the claim text.