Optical recording/playback apparatus and optical recording medium
作者： Hiromichi Kobori
DOI:
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摘要: An optical recording/reproducing apparatus comprises a light beam emitting unit which emits plurality of beams to the recording medium, photodetection detects reflected and output detection signals, signal selection selects one signals according tracks is selected in order record or reproduce data, being formed on at least land groove, tracking control make trace track signal.
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