IPC Subgroup
H04L 27/24 Half-wave signalling systems
Introduced: September 1968
Last revised: January 2006
Full Title
Modulated-carrier systems > Phase-modulated carrier systems, i.e. using phase-shift keying > Half-wave signalling systems
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION