IPC-Stelle: H04K [Version 2017.01]

SymbolTypTitel
HSKELECTRICITY
H04KLELECTRIC COMMUNICATION TECHNIQUE
H04KUKLSECRET COMMUNICATION; JAMMING OF COMMUNICATION
H04K 1/00HGRSecret communication [1, 2006.01]
H04K 1/02UGR1
.by adding a second signal to make the desired signal unintelligible [1, 2006.01]
H04K 1/04UGR1
.by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band [1, 2006.01]
H04K 1/06UGR1
.by transmitting the information or elements thereof at unnatural speeds or in jumbled order or backwards [1, 2006.01]
H04K 1/08UGR1
.by varying the polarisation of transmitted waves [1, 2006.01]
H04K 1/10UGR1
.by using two signals transmitted simultaneously or successively [1, 2006.01]
H04K 3/00HGRJamming of communication; Counter-measures [1, 2006.01]