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Data reproduction apparatus and data reproduction method

  • US 8,195,317 B2
  • Filed: 02/27/2008
  • Issued: 06/05/2012
  • Est. Priority Date: 03/13/2007
  • Status: Active Grant
First Claim
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1. A data reproduction apparatus comprising:

  • arithmetic means for calculating difference data that indicate a difference between left-channel and right-channel data that have been compressed in a predetermined compression format;

    higher harmonic component generation means for generating a higher harmonic component, which was lost during compression, by performing, when the difference data'"'"'s signal level exceeds a predetermined threshold, a digital limiter process that suppresses the signal level to the threshold; and

    adding means for adding the higher harmonic component to the left-channel and right-channel data to reproduce original data before being compressed.

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