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Encoding device, decoding device, and system thereof

  • US 20030093264A1
  • Filed: 11/06/2002
  • Published: 05/15/2003
  • Est. Priority Date: 11/14/2001
  • Status: Active Grant
First Claim
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1. A decoding device that decodes an encoded signal made up of a first bit stream which is an encoded sound digital signal and of a second bit stream which is an encoded band expansion information used for expanding a reproduction band of the sound digital signal, the decoding device comprising:

  • a first reproducing unit operable to reproduce a first sound digital signal from the first bit stream;

    a second reproducing unit operable to reproduce a second sound digital signal having a frequency band which is wider than that of the first sound digital signal reproduced by the first reproducing unit from the first bit stream and the second bit stream; and

    a selecting unit operable to select either the first sound digital signal reproduced by the first reproducing unit or the second sound digital signal reproduced by the second reproducing unit, and to output the selected sound digital signal.

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