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Communication system and transfer device

  • US 7,249,370 B2
  • Filed: 10/14/2003
  • Issued: 07/24/2007
  • Est. Priority Date: 10/17/2002
  • Status: Expired due to Fees
First Claim
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1. A communication system comprising:

  • an information providing unit configured to provide information data;

    an information providing-side network configured to provide connectivity to the information providing unit, to restrict access to the information providing-side network, and to operate under a first security policy restricting access to the information providing-side network based on an authentication determination made from within the information providing-side network;

    an information transmitter configured to obtain the information data by transmitting request data for requesting the information data to the information providing unit, and transmit obtained information data to a terminal;

    an information transmitting-side network configured to provide connectivity to the information transmitter, to restrict access to the information transmitting-side network, and to operate under a second security policy restricting access to the information transmitting-side network based on an authentication determination made from within the information transmitting-side network; and

    a transfer unit comprising an interface for each of the information transmitting-side network and the information providing-side network, the transfer unit configured to connect to each of the networks, determine whether or not transmitting-side data received via the information transmitting-side network is data transmitted from the information transmitter, and whether or not providing-side data received via the information providing-side network is data transmitted from the information providing unit, and transfer the transmitting-side data and the providing-side data based on determination results.

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