×

Recorder/reproducer and content data protection system for preventing unauthorized use of content

  • US 7,856,168 B2
  • Filed: 03/11/2005
  • Issued: 12/21/2010
  • Est. Priority Date: 04/20/2004
  • Status: Expired due to Fees
First Claim
Patent Images

1. A recorder/reproducer, comprising:

  • a content data moving unit operable to;

    write a second content data that is reproducible 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,generate a first invalidated partial content corresponding to the extracted first partial information, andinsert the first invalidated partial content into the first content data thereby making the first content data irreproducible;

    a memory device, the memory device being a non-transitory computer-readable recording medium; and

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

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×