Recording apparatus and recording medium, and computer program
作者： Akira Shirota , Naoharu Yanagawa
DOI:
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摘要: A recording apparatus includes: a device for data onto each of plurality types media by irradiating light beam corresponding to the media; diffracting disposed on an optical path from medium, generating main and sub beams beam, performing tracking process, amplitude signal generated or one portion being maximum; controlling adjust position which is focused, in accordance with type medium; device.
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