High speed communications system for analog subscriber connections

  • US 5,801,695 A
  • Filed: 09/06/1996
  • Issued: 09/01/1998
  • Est. Priority Date: 12/09/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. A high speed data transfer decoder for recovering a digital data stream from an analog signal transmitted to said decoder from a digital telephone network interface via an analog local loop connected to said decoder, comprising:

  • an interface to said local loop, said interface producing an input signal in response to said analog signal;

    means for recovering a clock from said input signal;

    means for producing an equalized signal from said input signal; and

    means for generating a sequence of codewords from said equalized signal, wherein each codeword in said recovered sequence of codewords is associated with a codeword utilized by said digital telephone network.

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