1976-03-31
1978-12-19
Richardson, Robert L.
325 7, 325 48, 325 54, 179 15BM, 179 15BT, H04B 720
Patent
active
041308018
ABSTRACT:
The present invention provides for an audio message broadcasting system which includes a source of pre-recorded audio messages such as a tape player for producing an audio signal of approximately one thousand cycles. The signal is delivered to a microwave transmitting station via available cable for transmission over microwave channels to a microwave receiving station. The microwave receiving station is connected to an earth based transmitting station for transmitting the signal on a 6 GHz frequency carrier to an earth orbiting spin stabilized geostationary satelite for receiving the signal. The satelite carries a wideband receiver which translates the 6 GHz carrier to a 4 GHz carrier for downward transmission of the signal. An additional earth based receiving station is located remote from the earth based transmitting station, such as across the continental United States. From there the signal is transmitted via microwave channels to local FM radio broadcasting stations for transmission over subcarrier channels to subscriber receivers. The subscriber receivers are preferably located at retail or supermarket locations for in-store broadcast of the pre-recorded audio messages, which may take the form of commercial messages for in-store advertising.
REFERENCES:
patent: 3534266 (1970-10-01), Halstead
patent: 3922607 (1975-11-01), Wysong
"Orbiting Relays", Electronics World, pp. 40-41, 79, Feb. 1968.
Leavitt Michael A.
Leavitt Samson B.
Richardson Robert L.
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