Telecommunications – Transmitter and receiver at separate stations – Frequency or phase modulation
Patent
1994-10-21
1997-07-15
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
Frequency or phase modulation
455 381, 34082544, 370314, 370330, H04Q 0708
Patent
active
056492979
ABSTRACT:
Two separate subcarriers are used to transmit portions of a single message to one or more receivers on an FM radio signal. The synchronization and addressing data necessary to identify the message to a target receiver is located in the first subcarrier. The second subcarrier, in turn, consists almost entirely of raw message data. Thus, transmitting multiple subcarriers substantially increases the overall data transmission payload when transmitting digital messages. Because each subcarrier is located within a different frequency band, the communication system is also adaptable to different subcarrier allotments in the FM baseband.
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Eisenzopf Reinhard J.
Galbi Elmer
Seiko Communications Holding N.V.
Sobutka Philip J.
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