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Apparatus and method for digital information transfer

  • US 6,122,323 A
  • Filed: 03/23/1998
  • Issued: 09/19/2000
  • Est. Priority Date: 08/02/1994
  • Status: Expired due to Fees
First Claim
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1. An apparatus for digital information transfer comprising:

  • a) means for generating a continuous synchronizing wave of a selected wave form and frequency;

    b) means for allocating a plurality of source digital signals to unique, repetitive time slots, one or more source digital signals being allocated simultaneously to each time slot, the time duration of said time slots being defined by one complete cycle of the synchronizing wave, and each time slot being cycled at a selected frequency;

    c) means for generating an analog information wave for each said source digital signal, each said information wave comprising a complete cycle of a selected wave form and each information wave generated in each time slot having a frequency which is distinct from the frequency of the other information waves generated simultaneously in the same time slot, each information wave having a frequency which is greater than the frequency of the synchronizing wave and having a start position which coincides with the start of the time slot, and the amplitude of each information wave being a function of the magnitude of the corresponding source digital signal as measured during the allocated time slot for the signal;

    d) means for combining each analog information wave generated in each time slot and the synchronizing wave to form a combined wave for each time slot;

    e) means for transmitting each combined wave within the allocated time slot;

    f) means for receiving at one or more locations each combined wave within the allocated time slot;

    g) means for extracting the synchronizing wave and information wave components of each received combined wave;

    h) means for determining the amplitude of each extracted information wave for each time slot; and

    i) means for generating an output digital signal for each information wave extracted in each time slot, said output digital signal having a digital magnitude which is a function of the amplitude of the corresponding received information wave.

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