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Noncompressed voice and data communication over modem for a computer-based multifunction personal communications system

  • US 5,754,589 A
  • Filed: 06/25/1996
  • Issued: 05/19/1998
  • Est. Priority Date: 01/08/1993
  • Status: Expired due to Term
First Claim
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1. A method of simultaneous digitized voice and data communication, comprising the steps of:

  • invoking a telephone communication connection between a local site equipped with a local modem and a remote site equipped with a remote modem using a carrier signal;

    alerting the local modem of a desire to transmit both data and voice signals over the carrier signal;

    digitizing the voice signals to create digitized voice samples;

    encoding multiple bits of the digitized voice samples onto selected cycles of the carrier signal using quadrature amplitude modulation to produce first encoded cycles in a constellation;

    encoding multiple bits of the data onto other selected cycles of the carrier signal using quadrature amplitude modulation to produce second encoded cycles in the constellation;

    transmitting the first and second encoded cycles to the remote site; and

    decoding the digitized voice samples and the data from the first and second encoded cycles.

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