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PCE
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DIFF Subgroup
G11B 20/02

Analogue recording or reproducing

Introduced: January 1985

Full Title

Signal processing not specific to the method of recording or reproducing; Circuits therefor > Analogue recording or reproducing

Of 4 combined children, 3 exist in both systems.

1 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1985.

Child Classifications

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  • G11B 20/025 CPC only CPC only
  • G11B 20/04 Direct recording or reproducing since 1985 IPC+CPC Available in IPC and CPC
  • G11B 20/06 Angle-modulation recording or reproducing since 1985 IPC+CPC Available in IPC and CPC
  • G11B 20/08 Pulse-modulation recording or reproducing (pulse-code-modulation recording G11B20/10) since 1985 IPC+CPC Available in IPC and CPC