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Digital communication system for transmitting digital information between a central station and a number of remote stations

  • US 4,114,141 A
  • Filed: 01/14/1977
  • Issued: 09/12/1978
  • Est. Priority Date: 01/14/1977
  • Status: Expired due to Term
First Claim
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1. A communication system having at least two stations for communicating digital information between said stations comprising:

  • a signal source coupled to all said stations;

    reference means connected to said signal source in each of said stations for generating the same time reference signal in each of said stations;

    signal generating means in each of said stations for generating a marking signal having a relationship to the time reference signal which is determined by the digital information to be transmitted, wherein the marking signal by itself does not contain the digital information but rather the relationship between the marking signal and the time reference signal identifies the digital information;

    signalling means for communicating the marking signal from station to station; and

    signal evaluating means in each of said stations for evaluating the relationship between the marking signal communicated from another one of said stations and the time reference signal generated in said station to determine the digital information transmitted from said another one of said stations.

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