G11B 7/00 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)
Introduced: September 1968
Title
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
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)
Full Title
Full titles differ between systems:
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
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)
Of 9 combined children, 7 exist in both systems.
1 codes are CPC-only extensions, 1 exist only in IPC.
Note: 1 CPC extensions are marked as secondary classification only.
3 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G11B 7/002 Recording, reproducing or erasing systems characterised by the shape of the carrier since 2000 IPC+CPC Available in IPC and CPC
- G11B 7/004 Recording, reproducing or erasing methods; Read, write or erase circuits therefor since 2000 IPC+CPC Available in IPC and CPC
- G11B 7/007 Arrangement of the information on the record carrier, e.g. form of tracks since 1985 +9 CPC IPC+CPC Available in IPC and CPC
- G11B 7/08 Disposition or mounting of heads or light sources relatively to record carriers +3 CPC IPC+CPC Available in IPC and CPC
- G11B 7/12 Heads, e.g. forming of the optical beam spot or modulation of the optical beam (disposition or mounting of head elements within housing or with provision for moving of light source, optical beam or detector, irrelevant to the transducing method G11B7/08 ) IPC+CPC Available in IPC and CPC
- G11B 7/24 Record carriers characterised by shape, structure or physical properties, or by the selection of the material (characterised by the arrangement of information on the carrier G11B7/007) +2 CPC IPC+CPC Available in IPC and CPC
- G11B 7/28 Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers IPC+CPC Available in IPC and CPC