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PCE
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DIFF Main Group
G04R 40/00

Correcting the clock frequency

Introduced: January 2013

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 2013.

Child Classifications

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  • G04R 40/02 by phase locking since 2013 IPC+CPC Available in IPC and CPC
  • G04R 40/04 by detecting the radio signal frequency since 2013 IPC+CPC Available in IPC and CPC
  • G04R 40/06 by computing the time value implied by the radio signal since 2013 IPC+CPC Available in IPC and CPC