IPC Subgroup
H04H 20/77 using carrier waves
Introduced: January 2008
Full Title
Arrangements for broadcast or for distribution combined with broadcast > Arrangements characterised by transmission systems for broadcast > Wired systems > using carrier waves
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- BROADCAST COMMUNICATION
3 direct subcodes
Child Classifications
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- H04H 20/78 CATV [Community Antenna Television] systems
- H04H 20/8 having frequencies in two or more frequency bands, e.g. medium wave and VHF
- H04H 20/81 combined with telephone network over which the broadcast is continuously available