IPC Subgroup
H04K 1/02 by adding a second signal to make the desired signal unintelligible
Introduced: September 1968
Last revised: January 2006
Full Title
Secret communication > by adding a second signal to make the desired signal unintelligible
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- SECRET COMMUNICATION; JAMMING OF COMMUNICATION