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PCE
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DIFF Subgroup
G11B 7/0065

Recording, reproducing or erasing by using optical interference patterns, e.g. holograms

Introduced: January 2000

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 > Recording, reproducing or erasing methods; Read, write or erase circuits therefor > Recording, reproducing or erasing by using optical interference patterns, e.g. holograms

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) > Recording, reproducing or erasing methods; Read, write or erase circuits therefor > Recording, reproducing or erasing by using optical interference patterns, e.g. holograms

Of 2 combined children, 0 exist in both systems.

2 codes are CPC-only extensions.

Note: 2 CPC extensions are marked as secondary classification only.

Child Classifications

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