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DIFF Subgroup
H04N 7/03

Subscription systems therefor

Introduced: January 1995

Full Title

Full titles differ between systems:

IPC:

Television systems > Systems for transmission of digital non-picture data, e.g. of text during the active part of a television frame > Subscription systems therefor

CPC:

Television systems (details H04N3/00, H04N5/00; methods or arrangements, for coding, decoding, compressing or decompressing digital video signals H04N19/00; selective content distribution H04N21/00) > Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame > Subscription systems therefor

No child classifications to compare. This is a leaf node in both IPC and CPC.