Television signal recording

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Details of television systems > Television signal recording

CPC:

Details of television systems (scanning details or combination thereof with generation of supply voltages H04N3/00) > Television signal recording

Of 10 combined children, 8 exist in both systems.

1 codes are CPC-only extensions, 1 exist only in IPC.

6 shared codes have differing titles between IPC and CPC.

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H04N 5/7605 CPC only CPC only
H04N 5/761 Systems for programming the time at which predetermined television channels will be selected for recording since 2000 −2 IPC IPC only IPC only
H04N 5/765 Interface circuits between an apparatus for recording and another apparatus since 1995 IPC+CPC Available in IPC and CPC
H04N 5/78 using magnetic recording (H04N5/91 takes precedence ) +1 CPC IPC+CPC Available in IPC and CPC
H04N 5/80 using electrostatic recording (H04N5/91 takes precedence) +1 CPC IPC+CPC Available in IPC and CPC
H04N 5/84 using optical recording (H04N5/80, H04N5/89, H04N5/91 take precedence) +1 CPC IPC+CPC Available in IPC and CPC
H04N 5/89 using holographic recording (H04N5/91 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
H04N 5/903 using variable electrical capacitive recording (H04N5/91 takes precedence) since 1985 IPC+CPC Available in IPC and CPC
H04N 5/907 using static stores, e.g. storage tubes or semiconductor memories (H04N5/91 takes precedence) since 1985 IPC+CPC Available in IPC and CPC
H04N 5/91 Television signal processing therefor since 1980 IPC+CPC Available in IPC and CPC

Class H04,2013–2023, worldwide · Source: EPO PATSTAT

Class H04,2013–2023, worldwide · Source: EPO PATSTAT