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Method and system for line isolation

  • US 5,991,335 A
  • Filed: 10/14/1997
  • Issued: 11/23/1999
  • Est. Priority Date: 10/14/1997
  • Status: Expired due to Term
First Claim
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1. In a data access arrangement, a method for transceiving data across an isolation boundary between a user device on a user side of said isolation boundary and a line-side associated with a communication network, said method comprising the steps of:

  • a) pulse modulating, on said user side, transmit data originating on said user side in an analog waveform into pulse modulated transmit data;

    b) digitally coupling said pulse modulated transmit data across said isolation boundary to said line-side;

    c) integrating said pulse modulated transmit data on said line-side to form line-side transmit data as an approximation in analog form of said transmit data;

    d) pulse modulating, on said line-side, receive data originating on said line-side in an analog waveform into pulse modulated receive data;

    e) digitally coupling said pulse modulated receive data across said isolation boundary to said user side; and

    f) integrating said pulse modulated receive data on said user side to form user side receive data as an approximation in analog form of said receive data.

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