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Mobile computer supporting system, its administrative server, its terminal, and address conversion method

  • US 6,088,725 A
  • Filed: 08/01/1997
  • Issued: 07/11/2000
  • Est. Priority Date: 08/02/1996
  • Status: Expired due to Fees
First Claim
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1. A mobile computer supporting system comprising:

  • a first terminal which belongs to a first network as its home network;

    a second terminal which belongs to a second network as its home network; and

    an administration server provided with a storing means for storing a home address and a present address so as to correspond to each other, for each terminal, said home address being assigned when the terminal is connected to said home network and said present address being assigned when the terminal is connected to another network different from said home network;

    said first terminal comprising;

    notification means for notifying said administration server of said present address together with the home address of said first terminal, when said present address is assigned to said first terminal;

    said second terminal comprising;

    a protocol processing means for performing processing in accordance with a predetermined protocol when sending and receiving information to and from said second network;

    an application program for sending and receiving information to and from said first terminal through said protocol processing means;

    an acquiring means for acquiring information if the home address of said first terminal is added to said information, when said application program sends said information to said protocol processing means so that said information is sent to said first terminal through said protocol processing means;

    an inquiry means for inquiring said administration server about the present address of said first terminal by using the home address of said first terminal, added to the acquired information acquired by said acquiring means, and for receiving a response on the present address of said first terminal from said administration server; and

    a conversion means for converting the home address of said first terminal, added to the acquired information acquired by said acquiring means, to the present address of said first terminal, received by said inquiry means;

    said acquiring means sending said acquired information, having the present address converted from the home address by said conversion means, to said protocol processing means; and

    said administration server comprising;

    a registration means for registering said present address in a present address storing area of said storing means corresponding to the home address of said first terminal, when notified of said present address by said notification means; and

    a response means for sending the present address of said first terminal, which is stored in said storing means and corresponds to the home address of said first terminal, for responding to said inquiry means, when inquired by said inquiry means about the present address of said first terminal.

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