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CIRCUIT FOR INTERCONNECTION OF TELEPHONE AND RADIO-TELEPHONE NETWORKS

  • US 3,711,647 A
  • Filed: 12/22/1970
  • Issued: 01/16/1973
  • Est. Priority Date: 12/23/1969
  • Status: Expired due to Term
First Claim
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1. Network connection circuitry for providing interconnection of a wired telephone network and a radio-telephone network, comprising termination circuit means connected to receive voice frequency signals to be transmitted;

  • a partial amplitude compressor providing at its output a nonzero dynamic range, a narrow band transmission amplitude detector, and a syllable detector arranged to provide a pulse at the beginning of each syllable in a voice signal, said signal termination circuit means being connected to simultaneously apply said voice frequency signals to respective inputs of said partial amplitude compressor, said amplitude detector and said syllable detector; and

    output circuit means for transmitting a summation of the outputs of said partial amplitude compressor, said amplitude detector and said syllable detector.

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