Radio signal broadcast system and method
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Accused Products
Abstract
A first transmitting device is used to transmit a first signal on a first carrier frequency to a relay device. The relay device receives the signal by demodulating the first carrier frequency. Subsequently, the relay device retransmits the signal by modulating a second and/or a third carrier frequency. The signal is then recovered at one or more receiving devices by demodulating the second and/or third carrier frequencies. Further, a second transmitting device transmits a second signal on a fourth carrier frequency and the relay device retransmits the signal by modulating a fifth and/or a sixth carrier frequency. The signal is then recovered at one or more receiving devices by demodulating the fifth and/or sixth carrier frequencies. The transmitting and/or receiving devices are preferably voice terminals, such as a wireless telephones or data terminals, such as portable computers. The transmitting and/or receiving devices are optionally coupled to a communications network, such as a public switched telephone network or the Internet. The relay device is preferably a multiple beam satellite and/or a ground station covering several distinct geographical regions.
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Citations
27 Claims
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1-14. -14. (canceled)
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15. A method of broadcasting a netted radio signal, comprising:
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transmitting a first message requesting participation in a predetermined distribution of the netted radio signal;
receiving a second message acknowledging participation in the predetermined distribution of the radio signal and identifying a frequency on which to receive the radio signal;
tuning a receiver to the identified frequency; and
receiving the radio signal on the identified frequency. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method of broadcasting a radio signal, comprising:
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receiving a first message requesting participation in a predetermined distribution of the radio signal;
determining a frequency on which to transmit the radio signal;
transmitting a second message acknowledging participation in the predetermined distribution of the radio signal and identifying the frequency on which the radio signal is to be transmitted; and
,transmitting the radio signal on the identified frequency. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification