Abstract text

A method and apparatus for moving copy-once contents to a different recording medium, making it impossible to reproduce information on a write-once recording medium. When copy-once contents recorded on a write-once recording medium are moved to a recording medium which is different from the write-once recording medium, a signal different from that recorded in an information recording area of the write-once recording medium is recorded in the information recording area, thereby making it impossible to reproduce information of the write-once recording medium.