CPC Subgroup
G11B 7/006 Overwriting (G11B7/0065 takes precedence)
Full Title
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation , reproducing using an optical beam at lower power ; Record carriers therefor (G11B11/00, G11B13/00 take precedence) > Recording, reproducing or erasing methods; Read, write or erase circuits therefor > Overwriting (G11B7/0065 takes precedence)
1 direct subcode
Child Classifications
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