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Recorder/Reproducer and Content Data Protection System

  • US 20080239909A1
  • Filed: 03/11/2005
  • Published: 10/02/2008
  • Est. Priority Date: 04/20/2004
  • Status: Active Grant
First Claim
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1. A recorder/reproducer, comprising:

  • a content data moving unit operable to;

    write a second content data into a second recording medium that is different from a first recording medium, the second content data being obtained by re-coding a first content data recorded in the first recording medium;

    write a first partial information extracted from the first content data into the second recording medium; and

    make the first content data irreproducible, using a first invalidated partial information corresponding to the extracted first partial information; and

    a content data restoration unit operable to make the irreproducible first content data reproducible, using the first partial information recorded in the second recording medium.

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