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Data communication system having an interface device determining whether transmitted data to be locally processed or to be transmitted to a reception device for processing

  • US 6,694,376 B1
  • Filed: 01/19/1999
  • Issued: 02/17/2004
  • Est. Priority Date: 01/19/1998
  • Status: Expired due to Term
First Claim
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1. A data communication system, comprising:

  • a data transmission device that transmits data;

    an interface device that receives the data from the data transmission device; and

    a data reception device that receives via the interface device at least a portion of the data from the data transmission device, wherein the data transmission device further comprises;

    determining means for determining the data to be transmitted by the data transmission device is first data to be processed by said interface device or second data to be processed by the data reception device;

    designating means for designating a first communication protocol for the data to be transmitted by the data transmission device when the data is the first data, and for designating a second communication protocol different from the first communication protocol for the data to be transmitted by the data transmission device when the data is the second data; and

    transmitting means for transmitting the data in the first communication protocol if designated the data is to be transmitted in the first communication protocol, and for transmitting the data in the second communication protocol if designated the data is to be transmitted in the second communication protocol;

    wherein the interface device further comprises;

    data receiving means for receiving the data transmitted from the data transmission device;

    protocol judging means for judging that the data received by the data receiving means is the first data transmitted in the first communication protocol or the second data transmitted in the second communication protocol;

    data processing means for processing the data without transferring the data to the data reception device if judged the data is transmitted in the first communication protocol; and

    data transferring means for transferring the data to the data reception device if judged the data is transmitted in the second communication protocol.

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