Colour picture communication systems

Introduced: September 1968

Full Title

Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof > Colour picture communication systems

Of 7 combined children, 6 exist in both systems.

1 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1995.

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H04N 1/465 CPC only CPC only
H04N 1/48 Picture signal generators (for halftone screening H04N1/52) since 1995 +2 CPC IPC+CPC Available in IPC and CPC
H04N 1/50 Picture reproducers (for halftone screening H04N1/52) since 1995 +3 CPC IPC+CPC Available in IPC and CPC
H04N 1/52 Circuits or arrangements for halftone screening since 1995 IPC+CPC Available in IPC and CPC
H04N 1/54 Conversion of colour picture signals to a plurality of signals some of which represent particular mixed colours, e.g. for textile printing since 1995 IPC+CPC Available in IPC and CPC
H04N 1/56 Processing of colour picture signals (H04N1/52 takes precedence) since 1995 IPC+CPC Available in IPC and CPC
H04N 1/64 Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor since 1995 +4 CPC IPC+CPC Available in IPC and CPC

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

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