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Orderwire communication system

  • US 4,449,246 A
  • Filed: 05/02/1980
  • Issued: 05/15/1984
  • Est. Priority Date: 05/02/1980
  • Status: Expired due to Term
First Claim
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1. For use in a communication system wherein information signals are to be conveyed among a plurality of stations distributed along a shared communication link, said link having a first portion for carrying messages in a first direction along said link and a second portion for carrying messages in a second direction along said link, a station transceiver for receiving messages transmitted to it and transmitting response messages in reply thereto comprising:

  • first means, coupled to said link, for receiving a first incoming message transmitted over said first portion of said link at a first prescribed carrier frequency; and

    second means, coupled to said link, for transmitting an outgoing message over said second portion of said link at said first prescribed carrier frequency and over said first portion of said link at a second prescribed carrier frequency different from said first prescribed frequency.

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