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Control device for transmission of supervisory control data in vehicle

  • US 5,418,721 A
  • Filed: 02/22/1994
  • Issued: 05/23/1995
  • Est. Priority Date: 02/23/1993
  • Status: Expired due to Fees
First Claim
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1. A data transmission control device for controlling a transmission of supervisory control data between a plurality of units in a vehicle, wherein said data transmission control device is contained in each of said units which are respectively connected to a plurality of supervisory control equipments, said control device in each unit comprising;

  • a data transmission controlling section for controlling a data transmission to another unit;

    a data reception controlling section for controlling a data reception from another unit;

    a response signal detecting section for detecting a response signal sent from another unit; and

    a data error checking section for checking whether there is any error in the transmitted data from another unit, wherein if a data to be transmitted between two different units is a common data for a plurality of units, said data reception controlling section in a data receiving unit transmits a response signal only when said data error checking section therein has detected an error, and said data transmission controlling section in a data sending unit resends the common data when said response signal detecting section therein has detected a response signal from said data receiving unit.

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