High speed communications system for analog subscriber connections

  • US 5,809,075 A
  • Filed: 04/11/1997
  • Issued: 09/15/1998
  • Est. Priority Date: 12/09/1994
  • Status: Expired due to Term
First Claim
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1. A high speed data transfer system for communicating between a digital data source and an analog subscriber connected to a digital telephone network by an analog loop comprising:

  • an encoder coupled to said digital data source, said encoder converting an input from said data source into a series of codewords from a set of codewords corresponding to quantizer values utilized by said digital telephone network;

    an interface for transmitting said series of codewords in digital form from said encoder to said digital telephone network; and

    a decoder coupled by said analog loop to said digital telephone network, wherein said analog loop provides an analog signal to said decoder, which analog signal is an analog representation of said series of codewords, and wherein said decoder is responsive to said analog signal to reconstruct said series of codewords in digital form from said analog signal.

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