DIFF Subgroup
H04L 27/12 Modulator circuits; Transmitter circuits
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Modulated-carrier systems > Frequency-modulated carrier systems, i.e. using frequency-shift keying > Modulator circuits; Transmitter circuits
CPC:
Modulated-carrier systems > Frequency-modulated carrier systems, i.e. using frequency-shift keying (H04L27/32 takes precedence) > Modulator circuits; Transmitter circuits
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
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