Multiplex communications – Wide area network – Packet switching
Patent
1994-12-27
1999-02-09
Marcelo, Melvin
Multiplex communications
Wide area network
Packet switching
455 131, 455 133, H04B 7212
Patent
active
058703772
ABSTRACT:
Each of the communications satellites going around the earth is equipped with a plurality of transmitters and receivers including receiving antennas in order to be able to transmit and receive signals in a plurality of directions, and a transmitter and a receiver in order to be able to transmit and receive signals between the closest terrestrial communications equipment. Each communications satellite is equipped with a cross-connect equipment, and has a function of transmitting signals that are received from each of the receivers toward other directions by utilizing the cross-connect equipment. Moreover, the communications satellites and the terrestrial communications equipment have respectively a function of transmitting and receiving signals consisting of communications frames having at their head address signals that indicate to which terrestrial communications equipment of the transmission destination they are intended for every time slot. Each communications satellite is equipped with four or more receivers to receive signals, and a cross-connect equipment which distributes the signals received by these receivers into four or more groups according to the transmitting terrestrial communications equipment based on the address signal for every time slot.
REFERENCES:
patent: 4004098 (1977-01-01), Shimasaki
patent: 4456988 (1984-06-01), Nakagome et al.
patent: 4901309 (1990-02-01), Turner
patent: 5065395 (1991-11-01), Shenoi et al.
Marcelo Melvin
NEC Corporation
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