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Station arrangement in data transmission network

  • US 4,718,060 A
  • Filed: 03/03/1986
  • Issued: 01/05/1988
  • Est. Priority Date: 03/04/1985
  • Status: Expired due to Term
First Claim
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1. A station arrangement including a plurality of terminal controllers each connected with a user unit, and a central controller connected through an intra-system bus with said terminal controllers and also connected to an inter-system bus, for implementing data transmission through said inter-system bus with one or more other stations connected commonly on said inter-system bus;

  • each of said terminal controllers comprising;

    (a) means for forming data sent from said user unit into a data packet;

    (b) first transmission means for transmitting said data packet onto said intra-system bus in accordance with network protocol conformable to the procedure for layer 3 or layer 4 of the seven layers of the Open Systems Interconnection (OSI) model (IS

         7498) stated by the International Organization for Standardization (ISO);

    (c) means for receiving a data packet sent over said intra-system bus from another station, in accordance with the network protocol;

    (d) means for reforming the data packet received by said reception means to have a format suitable for said user unit; and

    (e) second transmission means for transmitting the reformed data to said user unit;

    said central controller comprising;

    (f) bus access means for transmitting the data packet from said first transmission means onto said inter-system bus by a procedure conformable to layer 1 and layer 2 of the seven layers of the OSI model and(g) means for taking in a data packet destined to the self station from said inter-system bus and sending the data packet onto said intra-system bus.

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