APPARATUS AND A METHOD FOR DETECTING A COMMUNICATION CHANNEL
First Claim
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, 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, whether, in a frequency band 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.
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Accused Products
Abstract
The present invention provides a method and an apparatus for detecting a communication channel in whose frequency band radio signals are transmitted by different radio signal sources inside a cabin. In this case a wide band antenna receives the radio signals transmitted inside the cabin. Different demodulators are provided, each of which demodulate the radio signals received by the wide band antenna within an associated frequency range of the demodulator. A configuration logic establishes whether, in a frequency hand within a demodulated frequency range, radio signals are being transmitted simultaneously by different radio signal sources. In the case of impermissible signal transmissions of a radio signal source, e.g. when a non-safety-relevant system transmits signals in the same frequency band of a safety-relevant system in the same frequency bands of a safety-relevant system, the non-safety-relevant system is reconfigured by the configuration logic and an alarm or warning signal is generated as an indication of the impermissible condition.
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Citations
17 Claims
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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, said apparatus comprising:
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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, whether, in a frequency band 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for detecting a communication channel in which radio signals are transmitted by different radio signal sources,
wherein all radio signals detected inside a cabin are demodulated and it is established whether, in a frequency band of the demodulated frequency range, radio signals of different radio signal sources are being simultaneously transmitted, wherein, in an operational detection mode, it is established whether, in a frequency band of the communication channel of an internal on-board radio system, a radio signal of another radio signal source is transmitted and a different frequency band of the demodulated frequency range, is allocated to the other radio signal source.
Specification