A network infrastructure integrated system which is able to integrate a telephone
line network and a power line network as a single network using a simple circuit
includes a first network to which a plurality of Home Information Machines are
connected; a second network to which a plurality of Home Information Machines are
connected; and a network bridge connected between the first and second networks
and enabling the Home Information Machines to share respective applications and
data with each other, whereby the cost can be reduced, the interchangeability is
increased, and the accessibility to the network can be increased by using both
the power lines and the telephone lines.
