| 摘要 |
PURPOSE:To provide a digital disk recording/reproducing device capable of preventing unjust copying and acquiring unjust copying information by also recording required additional information related to recording together with program memory(PMA) information on the PMA area of a disk. CONSTITUTION:The additional information of one or more such as a manufacturning nations name, a manufacture's name, a type number, etc., of a recorder at a recording time together with the PMA information are recorded on the PMA area to which no access is performed at a reproducing time inside the read-in area of the disk when the disk is recorded. The unjust copying such as grandchild copying, etc., is prevented based on the additional information, and a digital disk recording method and its recording/reproducing device capable of acquiring the unjust copying information even when the unjust copying is performed are obtained, and an infringement of copyright, etc., is prevented. |
