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System for communicating television signals or a plurality of digital audio signals in a standard television line allocation

  • US 5,091,936 A
  • Filed: 01/30/1991
  • Issued: 02/25/1992
  • Est. Priority Date: 01/30/1991
  • Status: Expired due to Term
First Claim
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1. Apparatus for selectively transmitting horizontal television lines including video and digital audio components or equivalent digital data lines containing a plurality of audio program signals, comprising:

  • first means for combining signals into a composite waveform;

    means for coupling a first digital audio signal to said first means for inclusion in said composite waveform;

    second means for providing a multiplexed plurality of digital audio signals;

    switch means for selectively coupling either a video signal or said multiplexed plurality of digital audio signals to said first means for inclusion in said composite waveform; and

    means, operatively associated with said switch means, for coupling identification data to said first means for inclusion in said composite waveform, wherein said identification data indicates whether said composite waveform includes the video signal or the multiplexed plurality of digital audio signals.

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