Method and apparatus for inspecting optical disc

Reflected light caused by reflection of a laser beam at a first layer of an optical disc is converted into a main signal. Reflected light caused by reflection of the laser beam at a second layer of the optical disc is converted into a sub signal. An address of a currently-accessed position in the fi...

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Bibliographische Detailangaben
1. Verfasser: Tokiwa, Kazunori
Format: Patent
Sprache:eng
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