05289272 is referenced by 123 patents and cites 11 patents.

A passenger aircraft video distribution system distributes modulated RF carrier signals from a central signal source (10) to be used at each passenger seat (S1, S2, S3). The carriers are modulated to contain both audio and video data (12,14) and also other digital data, such as graphics, slide shows and the like. Analog video signals (14) from the video source are modulated (100) on individually discrete carriers in the range of 54 to 300 megahertz. Audio information, including audio sound channels and the video audio, are digitized (80,84) and combined with digital data in a combined serial bit stream that is multiplexed (82), and then modulated (96) on an RF carrier having a frequency sufficiently above the frequency band of the video signals so that the resulting spectrum of the modulated audio RF carrier does not interfere with the modulated video carriers. The RF carrier signals are combined (104) and distributed to individual seats. The modulated audio carrier (112) is separated from the video carriers (110) at each seat or each group of seats and then demodulated (116) and demultiplexed (120) for selection at each individual seat of a chosen audio channel.

Title
Combined data, audio and video distribution system in passenger aircraft
Application Number
7/836683
Publication Number
5289272
Application Date
February 18, 1992
Publication Date
February 22, 1994
Inventor
Richard E Sklar
Huntington Beach
CA, US
Irving Rabowsky
Woodland Hills
CA, US
Agent
Wanda K Denson Low
Terje Gudmestad
Georgann S Grunebach
Assignee
Hughes Aircraft Company
CA, US
IPC
H04N 1/02
H04N 7/04
H04N 7/10
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