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Data communication system

  • US 4,937,569 A
  • Filed: 06/28/1988
  • Issued: 06/26/1990
  • Est. Priority Date: 05/09/1985
  • Status: Expired due to Fees
First Claim
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1. A communications system comprising a main control unit, a plurality of stations each capable of receiving, generating and transmitting signals, the stations being spaced apart along a common transmission path such that signals may be transmitted directly between the main central unit and any intended destination station, signal-repeater means in each of one or more of said stations, means to selectively effect use of the repeater means of one or more of said stations in sending a signal along the common transmission path between the control unit and a station on the common transmission path, the means to selectively effect use of the repeater means comprising:

  • means to determine that a signal has not reached its intended destination station;

    means to modify the signal to address it to a station incorporating a signal repeater means on the common transmission path intermediate the main control unit and the intended destination station, for subsequent passage to the intended destination station;

    means to direct the signal to said intermediate station corresponding to the modified address for subsequent passage to its intended destination station; and

    the main control unit having means to monitor for the launch of the signal from the intermediate station towards the intended station(s).

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