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PCE
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DIFF Subgroup
H04N 5/78

using magnetic recording (H04N5/91 takes precedence )

Introduced: September 1968

Title

Titles differ between systems:

IPC: using magnetic recording

CPC: using magnetic recording (H04N5/91 takes precedence )

Full Title

Full titles differ between systems:

IPC:

Details of television systems > Television signal recording > using magnetic recording

CPC:

Details of television systems (scanning details or combination thereof with generation of supply voltages H04N3/00) > Television signal recording > using magnetic recording (H04N5/91 takes precedence )

Of 4 combined children, 3 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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  • H04N 5/7805 CPC only CPC only
  • H04N 5/781 on disks or drums since 1980 IPC+CPC Available in IPC and CPC
  • H04N 5/784 on a sheet since 1995 IPC+CPC Available in IPC and CPC