US 12,499,769 B2
Communication system for an aircraft
Dieter Breuer, Bichl (DE); Frank Roth, Noerdlingen (DE); Daniel Sauseng, Nordendorf (DE); and Thomas Boehm, Hurlach (DE)
Assigned to AIRBUS HELICOPTERS DEUTSCHLAND GMBH, Donauworth (DE)
Filed by AIRBUS HELICOPTERS DEUTSCHLAND GMBH, Donauworth (DE)
Filed on Feb. 8, 2023, as Appl. No. 18/107,052.
Claims priority of application No. 22400001 (EP), filed on Mar. 30, 2022.
Prior Publication US 2023/0360536 A1, Nov. 9, 2023
Int. Cl. G08G 5/20 (2025.01)
CPC G08G 5/20 (2025.01) 20 Claims
OG exemplary drawing
 
20. A communication system for an aircraft, the system comprising:
a first radio operable in an encrypted mode for transmitting and receiving encrypted audio signals;
a second radio operable in a clear mode for transmitting and receiving unencrypted audio signals;
an intercom system operably coupled to the first and second radios via respective communication lines; and
a security module configured to:
detect whether the first radio is receiving or transmitting an encrypted audio signal and whether the second radio is simultaneously transmitting or receiving an unencrypted audio signal, and
automatically inhibit, based on the detection of the detected signal type, communication via one of the radios by disabling at least one communication line coupling that radio to the intercom system to prevent simultaneous transmission of an encrypted audio signal via the first radio and an unencrypted audio signal via the second radio.