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Data transmission with improved message format

  • US 4,885,749 A
  • Filed: 12/28/1987
  • Issued: 12/05/1989
  • Est. Priority Date: 12/28/1987
  • Status: Expired due to Fees
First Claim
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1. A data transmission system comprising:

  • a first modem including means for generating a line signal which represents a stream of user data followed by a predetermined delimiting signal followed by a trailer which contains information-bearing data generated from within said first modem, anda second modem for receiving said line signal, said second modem including;

    a received data lead,means for providing an indication of the presence of valid received user data on said received data lead, andmeans for terminating said indication in response to the receipt of said delimiting signal,whereby terminal equipment associated with said second modem is enabled to initiate the transmission of data at a point in time at which the portion of said line signal containing said trailer is still being received by said second modem.

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