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Digital audio distribution

  • US 8,837,529 B2
  • Filed: 09/22/2011
  • Issued: 09/16/2014
  • Est. Priority Date: 09/22/2010
  • Status: Active Grant
First Claim
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1. A system for distributing audio comprising:

  • (a) a master transmitter configured for(i) multiplexing a plurality of Integrated Interchip Sound (I2S) streams as a time-division multiplexed audio stream, each frame of the I2S stream comprising sixty-four bits encoding two channels of audio at twenty-four bits precision and corresponding to a stereo source,(ii) transmitting the time-division multiplexed audio stream on a first communication path wherein each frame of the time-division multiplexed audio stream comprises a plurality of words comprising a start bit, a four bit portion of a sample frame, an inverted copy of the four bit portion, two framing bits and a stop bit, and(iii) transmitting control information on a second communication path; and

    (b) an expansion receiver configured for(i) receiving the time-division multiplexed audio stream and control information;

    (ii) demultiplexing the time-division multiplexed audio stream; and

    (iii) distributing a desired audio channel to a speaker according to the control information.

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