Multi-channel audio distribution for aircraft passenger...

Details Multi-channel audio distribution for aircraft passenger... Multi-channel audio distribution for aircraft passenger...

2006-02-21

2006-02-21

Patel, Ajit (Department: 2664)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via frequency channels

C370S486000, C370S535000, C725S074000, C725S076000

Reexamination Certificate

active

07002994

ABSTRACT:
A method of distributing audio channels to passengers of an aircraft includes digitally encoding a multiplicity of audio channels into a corresponding multiplicity of digital audio channels. Different groups of the digital audio channels are combined into sub-channels having a data rate higher than a data rate of the digital audio channels. The sub-channels are combined into a composite data stream having a data rate higher than the data rate of the sub-channels. A first radio frequency (RF) carrier signal is modulated with the composite data stream to generate a modulated RF signal audio output. The modulated RF signal output containing a large number of audio channels is transmitted over a data network, such as a coaxial cable network, along with a multiplicity of video channel modulated RF carrier signals.

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