Arrangement of the information on the record carrier, e.g. form of tracks

Introduced: January 1985

Full Title

Full titles differ between systems:

IPC:

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 > Arrangement of the information on the record carrier, e.g. form of tracks

CPC:

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

CPC subdivides this area 10x more granularly than IPC with 9 additional codes.

9 codes are CPC-only extensions.

Note: 4 CPC extensions are marked as secondary classification only.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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G11B 2007/00709 2nd only CPC only CPC only
G11B 2007/00727 2nd only CPC only CPC only
G11B 2007/00754 2nd only CPC only CPC only
G11B 2007/00763 2nd only CPC only CPC only
G11B 7/00718 CPC only CPC only
G11B 7/00736 CPC only CPC only
G11B 7/00745 CPC only CPC only
G11B 7/00772 +1 CPC CPC only CPC only
G11B 7/0079 CPC only CPC only
G11B 7/013 for discrete information, i.e. where each information unit is stored in a distinct discrete location since 1985 +2 CPC IPC+CPC Available in IPC and CPC