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PCE
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DIFF Subgroup
G11B 11/12

using recording by optical means (G11B11/03 takes precedence )

Introduced: September 1968

Title

Titles differ between systems:

IPC: using recording by optical means

CPC: using recording by optical means (G11B11/03 takes precedence )

Full Title

Full titles differ between systems:

IPC:

Recording on, or reproducing from, the same record carrier wherein for these two operations the methods or means are covered by different main groups of groups or by different subgroups of group; Record carriers therefor > using recording by optical means

CPC:

Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor > using recording by optical means (G11B11/03 takes precedence )

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

Child Classifications

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  • G11B 11/14 with reproducing by magnetic means IPC+CPC Available in IPC and CPC