Multiplex communications – Wide area network – Packet switching
Patent
1985-04-11
1987-04-21
Ng, Jin F.
Multiplex communications
Wide area network
Packet switching
455 61, 455102, 370 12, 370 691, H04J 900
Patent
active
046601929
ABSTRACT:
A process and apparatus for simultaneously broadcasting a first intelligence signal with a plurality of second intelligence signals is disclosed. The transmitter performs the following steps: multiplexing the plurality of second intelligence signals into a single signal to form a first modulating signal; frequency modulating a first radio frequency carrier signal with the first modulating signal to form a second radio frequency carrier signal; amplitude modulating the second radio frequency carrier signal using the first intelligence signal as a second modulating signal; and broadcasting the resultant single radio frequency signal out over a transmitting antenna. The receiver performs the following steps: after receiving the single radio frequency signal over a receiving antenna, it amplitude-demodulates the single radio frequency signal to yield the first intelligence signal, and the second radio frequency carrier signal; by frequency-demodulating the second radio frequency carrier signal, the first modulating signal is yielded; and by demultiplexing the first modulating signal, the plurality of second intelligence signals is yielded.
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Auton William G.
Ng Jin F.
Seidenglanz Elissa
Singer Donald J.
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