DIFF Subgroup
H04N 1/6083 Full Title
Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof > Colour picture communication systems > Processing of colour picture signals (H04N1/52 takes precedence) > Colour correction or control
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.