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    Method and apparatus for optical disk device
    6.
    发明授权
    Method and apparatus for optical disk device 失效
    光盘装置的方法和装置

    公开(公告)号：US06490236B1

    公开(公告)日：2002-12-03

    申请号：US09654178

    申请日：2000-09-01

    申请人： Yasushi Fukuda ,  Toshifumi Takeuchi ,  Nobuhiro Tokushuku

    发明人： Yasushi Fukuda ,  Toshifumi Takeuchi ,  Nobuhiro Tokushuku

    IPC分类号： G11B2018

    CPC分类号： G11B20/18

    摘要： In playing back data in an optical disk device, to perform high-speed data playback with a low number of playback retries even if an error occur when data is being read. In reading data composed of ECC blocks, if a data error occurs during a read operation, the data from sectors for which PI error correction can be performed is left alone. Playback retries using different playback conditions are performed just on the sectors for which PI error correction can be performed. Thus, the playback retry count can be reduced.

    摘要翻译： 在回放光盘装置中的数据时，即使在正在读取数据时发生错误，也能以低数量的再现重试来执行高速数据重放。 在读取由ECC块组成的数据时，如果在读取操作期间发生数据错误，则可以执行可以执行PI错误校正的扇区的数据。 使用不同播放条件的播放重试仅在可执行PI纠错的扇区上执行。 因此，可以减少播放重试计数。

    Optical information medium having paired wobble pitts with continuous groove therebetween
    7.
    发明授权
    Optical information medium having paired wobble pitts with continuous groove therebetween 失效
    光信息介质具有成对的摆动凹坑，它们之间具有连续的凹槽

    公开(公告)号：US4996682A

    公开(公告)日：1991-02-26

    申请号：US260387

    申请日：1988-10-20

    申请人： Hitoshi Yanagihara ,  Nobuhiro Tokushuku

    发明人： Hitoshi Yanagihara ,  Nobuhiro Tokushuku

    IPC分类号： G11B7/0045 ,  G11B7/013 ,  G11B7/26

    CPC分类号： G11B7/24085 ,  G11B7/0045 ,  G11B7/261

    摘要： The present invention relates to an optical information medium for recording and reproducing information optically. Particularly, it is concerned with a so-called sample servo type optical information medium wherein an optical head traces over the center line of an imaginary track on the basis of information obtained from at least a pair of wobble pits disposed on both sides of the said imaginary track center line. A continuous groove is formed between the paired wobble pits along the imaginary track center line in a certain area of the optical information medium so that the deviation of each wobble pit from the imaginary track center line can be easily grasped and the conditions of the wobble pits being formed can be estimated. The quality of the medium being manufactured can be easily judged by the presence of such continuous groove.

    摘要翻译： 光信息介质技术领域本发明涉及用于光学信息记录和再现信息的光学信息介质。 特别地，它涉及一种所谓的采样伺服型光信息介质，其中光头基于从设置在所述多个虚拟轨道的两侧的至少一对摆动凹坑获得的信息， 虚拟轨道中心线。 在光信息介质的特定区域中沿着虚拟轨道中心线的成对摆动凹坑之间形成连续的凹槽，使得可以容易地掌握每个摆动凹坑与虚拟轨迹中心线的偏差，并且摆动凹坑的条件 正在形成可以估计。 可以通过存在这种连续的凹槽来容易地判断制造的介质的质量。