Optical disc and apparatus for scanning the optical disc
    1.
    发明申请
    Optical disc and apparatus for scanning the optical disc 失效
    用于扫描光盘的光盘和设备

    公开(公告)号:US20020089909A1

    公开(公告)日:2002-07-11

    申请号:US10100599

    申请日:2002-03-18

    CPC classification number: G11B7/00745 G11B7/007

    Abstract: An optical disc is described for recording data, which disc has a recording area for recording data encoded in optical marks at a recording density. The recording area has circular or spiral tracks provided with a servopattern comprising headers alternating with track portions. The headers contain position information encoded in preformed marks. The track portions comprise periodic characteristics, e.g. a wobble, to synchronise the data writing and reading operations. For reliably detecting the headers the phase of the periodic characteristics comprises a phase jump at a predetermined distance before each header.

    Abstract translation: 描述了用于记录数据的光盘,该盘具有用于以记录密度记录以光学标记编码的数据的记录区域。 记录区域具有设置有包括与轨道部分交替的标题的伺服模式的圆形或螺旋形轨道。 标题包含以预制标记编码的位置信息。 轨道部分包括周期特性,例如。 摆动,同步数据写入和读取操作。 为了可靠地检测标题,周期特性的相位包括在每个报头之前预定距离处的相位跳变。

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