CPC Subgroup
G11B 7/013 for discrete information, i.e. where each information unit is stored in a distinct discrete location
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) > Arrangement of the information on the record carrier, e.g. form of tracks > for discrete information, i.e. where each information unit is stored in a distinct discrete location
2 direct subcodes
Child Classifications
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