Patent ID: 9369197
Filing Date: 2016-06-14
CPC Classification: H04B

Claim Text:
1. An apparatus for detection of a communication channel having a frequency band in which radio signals are transmitted from different radio signal sources inside a cabin of an aircraft, said apparatus comprising: a wide band antenna to receive the radio signals transmitted inside the cabin; a plurality of demodulators, each of which demodulate the radio signals received by said wide band antenna in an associated frequency range of the respective demodulator; and a configuration logic for establishing whether, in a frequency band within a frequency range demodulated by said demodulators, radio signals are being simultaneously transmitted by different radio signal sources, wherein said configuration logic establishes, in an operational detection mode during a normal flight phase of the aircraft, said normal flight phase being distinct from a take-off phase and a landing phase of the aircraft, whether, in a first frequency band reserved exclusively for crew members and a second frequency band allocated exclusively for passengers of the aircraft of the communication channel of an internal on-board radio system, a radio signal from another radio signal source is being transmitted, and allocates to the other radio signal source a different frequency band within the demodulated frequency range, such that said first reserved frequency band of the crew members and said second allocated frequency band of the passengers are kept free from interference during said operational detection mode.