Disk drive apparatus and disk storage medium for high density recording
    1.
    发明公开
    Disk drive apparatus and disk storage medium for high density recording 失效
    Plattenlaufwerk sowieplattenförmigerAufzeichnungsträgermit hoher Dichte

    公开(公告)号:EP0789353A2

    公开(公告)日:1997-08-13

    申请号:EP97101799.1

    申请日:1997-02-05

    IPC分类号: G11B7/00 G11B20/14

    摘要: A disk drive apparatus is provided that can reproduce data at low bit error rate even if a crosstalk is large. This apparatus comprises means (104,106,109) for writing three or more different states of record marks in a read track and adjacent tracks thereof on a disk storage medium (101), means (104,110) for detecting read levels of the record marks in the read track, means (115) for calculating every possible read level regarding every possible combination of the record marks in the read track and adjacent tracks thereof according to the detected read levels, and means (116) for performing most-liklihood decoding of written data in accordance with the possible read levels as reference levels.

    摘要翻译: 提供了一种磁盘驱动装置,即使串扰较大,也可以以低误码率再现数据。 该装置包括用于在磁盘存储介质(101)上的读磁道及其相邻轨道上写入三个或更多个不同状态的记录标记的装置(104,106,109),用于检测读磁道中记录标记的读取电平的装置(104,110) 根据检测到的读取电平,计算关于读取磁道和相邻磁道中的记录标记的每个可能组合的每个可能的读取电平的装置(115),以及用于根据检测到的读取电平进行写入数据的最有效解码的装置(116) 可能的读取级别作为参考级别。

    Optical disc and method for recording additional information to an optical disc
    10.
    发明公开
    Optical disc and method for recording additional information to an optical disc 有权
    光盘和记录附加信息的方法在光盘上

    公开(公告)号:EP1536422A2

    公开(公告)日:2005-06-01

    申请号:EP05004496.5

    申请日:1999-09-21

    IPC分类号: G11B20/00 G11B7/00

    摘要: An optical disk comprises a first recording area for recording contents data and data for recording and reproducing the contents data, and a second recording area for recording secondary data on the contents recorded in the first recording area, the secondary data being recorded as stripe marks longer in radial direction. Further, the second recording area comprises a first section for recording control data on the second recording area, a second section for recording data not to be inhibited to be outputted from a recording and reproducing apparatus for the optical disk, and a third section for recording data to be inhibited to be outputted from a recording and reproducing apparatus. The control data recorded in the first section includes an identifier which shows whether said second recording area includes said third section or not. By using the data to be inhibited to be outputted in the second recording area, a copyright of contents is protected and illegal use of software is prevented.

    摘要翻译: 一种光盘包括用于记录内容数据的数据和用于记录和再现所述内容数据的第一记录区,和用于记录关于记录在第一记录区域中的内容的辅助数据的第二记录区,辅助数据被记录为条纹的标记更长 在径向方向上。 此外,第二记录区域包括用于在第二记录区域中记录控制数据的第一部分,用于记录数据的第二部分不被抑制从记录和用于光盘再现装置,以及用于记录的第三部分将被输出的 要被禁止数据从记录和再现装置将被输出的。 记录在第一部分中的控制数据包括在标识符表示是否所述第二记录区域包括所述第三部分或没有。 通过使用这些数据被抑制在第二记录区域上输出的,内容的版权保护和非法使用的软件被阻止。