Hitachi, Ltd.

Hideaki Kano

Naoki Ono

Kensuke Inoue

In a network, an inter-network connection unit is connected to perform transmission of data between the network and another network. The inter-network connection unit is furthermore connected to a multiplexer. Between the multiplexer and another multiplexer to which an inter-network unit installed in the other network is connected, data transmission is performed via a multiplex line. The multiplexer changes the communication capacity of a communication line connecting the inter-network connection unit to the multiplexer in accordance with the data transmission quantity between the multiplexer and the inter-network connection unit connected thereto and dynamically changes the communication band assigned to the inter-network connection unit in accordance with the change of the communication capacity.

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Yokohama, Japan

Hideaki Kano