Communication satellite/land circuits selection communications system
First Claim
1. A selective communication system of communications satellite/terrestrial lines having a structure in which three kinds of respective terminals of a plurality of satellite/terrestrial terminals each having both interfaces for a satellite system and a terrestrial system;
- a plurality of satellite terminals each having an interface only for a satellite system; and
a plurality of terrestrial terminals each having an interface only for a terrestrial system, exist, input/output signals of said satellite/terrestrial terminal and said satellite terminal are connected to a switchboard through a communications satellite and a satellite communication hub station, and input/output signals of said satellite/terrestrial terminal and said terrestrial terminal are connected to said switchboard through respective terrestrial lines, wherein an output signal from said switchboard is transmitted to said satellite terminal, said satellite/terrestrial terminal and/or said terrestrial terminal through said communications satellite and/or said terrestrial lines, with a transmission route selected by said switchboard on the basis of destination included in said output signal, identifying information whether it is broadcast communication or one-to-one communication and the like, and predetermined judgment condition for transmission route.
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Accused Products
Abstract
There is provided a selective communication system of communications/satellite/terrestriallines in which three types of terminals of terrestrial terminals having interface only for terrestrial system, satellite terminals having interface only for terrestrial system and satellite/terrestrial terminals having both interfaces for satellite system and terrestrial system are available and allows a group broadcast communication and selection of transmission route for broadcast communication in consideration of not only transmission time but also communication cost and the quality of lines. The system has a structure including above three kinds of terminals, and selects and changes transmission route based on destination included in the output signal, identifying information whether it is broadcast communication or one-to-one communication, and predetermined judgment condition for transmission route when data are transmitted from switchboard to these terminals.
270 Citations
8 Claims
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1. A selective communication system of communications satellite/terrestrial lines having a structure in which three kinds of respective terminals of
a plurality of satellite/terrestrial terminals each having both interfaces for a satellite system and a terrestrial system; -
a plurality of satellite terminals each having an interface only for a satellite system; and
a plurality of terrestrial terminals each having an interface only for a terrestrial system, exist, input/output signals of said satellite/terrestrial terminal and said satellite terminal are connected to a switchboard through a communications satellite and a satellite communication hub station, and input/output signals of said satellite/terrestrial terminal and said terrestrial terminal are connected to said switchboard through respective terrestrial lines, wherein an output signal from said switchboard is transmitted to said satellite terminal, said satellite/terrestrial terminal and/or said terrestrial terminal through said communications satellite and/or said terrestrial lines, with a transmission route selected by said switchboard on the basis of destination included in said output signal, identifying information whether it is broadcast communication or one-to-one communication and the like, and predetermined judgment condition for transmission route. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification