Data communications system
First Claim
1. A data communications system in which a transmitting side relay device and a receiving side relay device are connected to a first and second networks, respectively, where a prescribed transfer unit is consecutively transferred at a specific transfer rate and with prescribed transfer delay, and a data stream generated as a series of the transfer units are communicated as a series of datagram type packets, including the transfer unit, via a third network,said transmitting side relay device, comprising:
- an additional information generation unit generating additional information, including information about relationship between each transfer unit and the data stream based on the characteristics of the data stream;
a packet generation unit generating a packet by attaching both the additional information and header information suited to be transferred in the third network when each transfer unit composing the data stream is inputted; and
a transmitting unit transmitting the packet to the third network according to prescribed procedures, andsaid receiving side relay device, comprising;
a separation unit separating the additional information and a transfer unit which are included in the packet received from the third network;
an analysis unit analyzing the additional information separated by the separation unit;
a reproduction unit locating information that is included in the transfer unit received from the separation unit in a correct position of the data stream and reproducing the data stream based on an analysis result by the analysis unit; and
an outputting unit outputting the data stream reproduced by the reproduction unit to the second network.
2 Assignments
0 Petitions
Accused Products
Abstract
A transmitting side relay device comprises additional information generation means for generating additional information about the characteristics of a data stream, packet generation means for generating a packet by attaching additional information to each transfer unit and transmitting means for transmitting the packet to the third network according to prescribed procedures. A receiving side relay device comprises separation means for breaking down the received packet into additional information and a transfer unit, analysis means for analyzing the additional information, reproduction means for locating information included in a corresponding transfer unit in an appropriate position and reproducing the data stream and output means for outputting the data stream reproduced by the reproduction means to the second network.
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Citations
50 Claims
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1. A data communications system in which a transmitting side relay device and a receiving side relay device are connected to a first and second networks, respectively, where a prescribed transfer unit is consecutively transferred at a specific transfer rate and with prescribed transfer delay, and a data stream generated as a series of the transfer units are communicated as a series of datagram type packets, including the transfer unit, via a third network,
said transmitting side relay device, comprising: -
an additional information generation unit generating additional information, including information about relationship between each transfer unit and the data stream based on the characteristics of the data stream; a packet generation unit generating a packet by attaching both the additional information and header information suited to be transferred in the third network when each transfer unit composing the data stream is inputted; and a transmitting unit transmitting the packet to the third network according to prescribed procedures, and said receiving side relay device, comprising;
a separation unit separating the additional information and a transfer unit which are included in the packet received from the third network;an analysis unit analyzing the additional information separated by the separation unit; a reproduction unit locating information that is included in the transfer unit received from the separation unit in a correct position of the data stream and reproducing the data stream based on an analysis result by the analysis unit; and an outputting unit outputting the data stream reproduced by the reproduction unit to the second network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A data communications system where a transfer unit in a prescribed format transferred in a first network, which is one of a plurality of physically independent networks is relayed by a transmitting side relay unit installed in relation to the first network, another relay network and a receiving side relay unit in relation to a second network, which is at least one of other independent networks,
said transmitting side relay unit comprises: -
an extraction unit extracting a transfer unit to be transmitted to the second network; a transformation unit applying a prescribed operation to control information included in the extracted transfer unit and generating a relay transfer unit; a reshaping unit reshaping the relay transfer unit into a packet in a format based on transmitting procedures of the relay network, that is addressed to said receiving side relay device installed in relation to the second network; and a first transmitting unit outputting each packet reshaped by the reshaping unit to the relay network, and the receiving side relay unit comprises; a separation unit breaking down the packet received via the relay network and separating the relay transfer unit from the packet; a generation unit applying a prescribed operation to the relay transfer unit obtained by the separation unit and re-generating a transfer unit, including control information suitable for a transmission process in the second network; and a second transmitting unit transmitting the transfer unit generated by the generation unit to the second network. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A data communications system where a transmitting side relay unit installed in relation to a first network, which is one of a plurality of physically independent networks for transferring structure data with a prescribed regular structure in prescribed transfer units, transmits a transfer unit transferred in the first network to another relay network and a receiving side relay unit installed in relation to a second network, which is at least one of the plurality of independent networks, relays the transfer unit transmitted to the relay network to the second network,
said transmitting side relay unit comprising: -
a generation unit generating a datagram type relay packet, including the transfer unit, and addressed to the receiving side relay unit when a transfer unit transferred in the first network is inputted; and a transmitting unit transmitting the relay packet to the relay network, and said receiving side relay unit comprises; a decomposition unit breaking down the relay packet received via the relay network and separating the transfer unit; a reproduction unit reproducing structure data using the transfer unit obtained by the decomposition unit based on information about the prescribed regular structure to be possessed by the structure data; and an outputting unit outputting the structure data to the second network in the prescribed transfer units. - View Dependent Claims (45, 46, 47, 48, 49, 50)
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Specification