Multiplex communications – Wide area network – Packet switching
Patent
1982-01-27
1984-06-26
Safourek, Benedict V.
Multiplex communications
Wide area network
Packet switching
370108, 455 12, 455 18, H04B 7185, H04J 102
Patent
active
044569882
ABSTRACT:
A satellite repeater for a digital satellite communication system for use on board of satellites. Receivers are provided with respective antennas for receiving radio-frequency signals from a plurality of ground stations. A signal processing circuit switches signals received in synchronism with stable clock timings. Transmitters receive the switched outputs of the signal processing circuit to provide radio-frequency signals for transmission through respective antennas of the transmitters. Timing detectors receive the outputs of the receivers and detect the frame timings of the output signals of the receivers. Signal storage circuits are provided between respective outputs of the receivers and the signal processing circuit for storing the respective output signals of the receivers by respective amounts. Control circuitry connected to the timing detectors, the signal storage circuits and the signal processing circuit control the storage operations of the signal storage circuits so that each of the frame timings of the received signals and the switching timing of the signal processing circuit have a desired timing relationship.
REFERENCES:
patent: 4004098 (1977-01-01), Shimasaki
patent: 4215348 (1980-07-01), Cordaro et al.
Hirata Yasuo
Nakagome Yukio
Ogawa Akira
Takahashi Toshio
Adams Bruce L.
Burns Robert E.
Kokusai Denshin Denwa Kabushiki Kaisha
Lobato Emmanuel J.
Safourek Benedict V.
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