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Focusing and tracking servo circuit in an optical disk device

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

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Focusing method of layer jumping for an optical storage device

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
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Focusing state monitoring apparatus in optical recording apparat

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

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Frame number detection for signals produced from optical disk

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
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Front photo detector having no gain selection switch,...

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
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Generating tracking control output signals for compensating...

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
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HD DVD wobble detection circuit

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
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Head follow-up control method, head follow-up control device...

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
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Head for optical disc drive

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
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Header region protection apparatus and method of optical...

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Hiding digital data in a digital audio or video carrier signal

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
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High data capacity storage medium with protection code,...

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
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High speed data recording and/or reproducing method and...

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
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High-density multi-layer optical disc and method for...

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

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High-density multi-layer optical disc, method for recording...

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

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Hologram recording and reproducing device and method for...

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
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Holographic information storage medium, and apparatus and...

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
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Hybrid disc and method and apparatus for discriminating same

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

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
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Identifying copy protected optical compact discs

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