| 摘要 |
With respect to the disk, a second format such as an error correcting code, a modulation system, and a recording density in an encryption data recording region is different from a first format such as an error correcting code, a modulation system, and a recording density in a user data recording region. A recording and reproducing apparatus for users includes a first reproducing circuit for reproducing information in the first format, a second reproducing circuit for reproducing information in the second format and a first recording circuit for recording information in the first format, but a recording circuit for recording information in the second format is not provided. This makes it possible to provide a method for recording and reproducing information, a recording and reproducing apparatus, a recording medium, and a method for manufacturing the recording medium, which can strongly prevent unauthorized copying of copyright information and secret information, and the like.
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