Multiplex communications – Communication over free space – Combining or distributing information via time channels
Patent
1997-06-11
2000-07-11
Ton, Dang
Multiplex communications
Communication over free space
Combining or distributing information via time channels
H04J 1300
Patent
active
060883510
ABSTRACT:
A digital audio radio system where multiple digital data versions of a single source signal are transmitted to one or more satellites to be rebroadcast to a defined reception area where the multiple versions are delayed with respect to each other. One of the signals is intended to be used by a mobile receiver if the transmission from the satellite is not blocked, and the other one or more versions are intended to be used if the broadcast signal from the satellites is blocked. Because the multiple versions represent the same source signal that is received at different times, if the signal from satellites is blocked, the signal being received at a different time can be used. The signals that are to be used when the broadcast signal is blocked can be of a lesser data quality to conserve system resources.
REFERENCES:
patent: 5594941 (1997-01-01), Dent
patent: 5848060 (1998-12-01), Dent
Jenkin Keith R.
Smigla Terrence R.
Ton Dang
TRW Inc.
Yatsko Michael S.
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