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    Multi-layered information recording medium, recording apparatus, and recording method
    73.
    发明授权
    Multi-layered information recording medium, recording apparatus, and recording method 有权
    多层信息记录介质，记录装置和记录方法

    公开(公告)号：US08121002B2

    公开(公告)日：2012-02-21

    申请号：US12980413

    申请日：2010-12-29

    Applicant: Motoshi Ito ,  Takashi Ishida ,  Hiroshi Ueda ,  Yoshikazu Yamamoto ,  Mamoru Shoji

    Inventor： Motoshi Ito ,  Takashi Ishida ,  Hiroshi Ueda ,  Yoshikazu Yamamoto ,  Mamoru Shoji

    IPC: G11B7/00

    CPC classification number: G11B7/00736 ,  G11B7/007 ,  G11B7/1267 ,  G11B7/24038 ,  G11B20/1883 ,  G11B2220/20 ,  G11B2220/235

    Abstract: A multi-layered information recording medium including a plurality of recording layers, the multi-layered information recording medium comprising: a user data area for recording user data; and a plurality of spare areas including at least one replacement region, wherein when the user data area includes at least one defect region, the at least one replacement region may be used in place of the at least one defect region, wherein a first spare area of the plurality of spare areas is positioned so as to be contiguous to a first user data area of a first recording layer, a second spare area of the plurality of spare areas is positioned so as to be contiguous to a second user data area of a second recording layer, and the first spare area and the second spare area are positioned approximately at the same radial position on the multi-layered information recording medium.

    Abstract translation: 一种包括多个记录层的多层信息记录介质，所述多层信息记录介质包括：用于记录用户数据的用户数据区; 以及包括至少一个替换区域的多个备用区域，其中当所述用户数据区域包括至少一个缺陷区域时，可以使用所述至少一个替换区域来代替所述至少一个缺陷区域，其中第一备用区域 定位成与第一记录层的第一用户数据区域相邻，多个备用区域的第二备用区域被定位成与第一记录层的第二用户数据区域相邻， 第二记录层，第一备用区和第二备用区大致位于多层信息记录介质上的相同径向位置。

    Optical disc including a learning area having first and second regions, and methods for reproducing and recording data on the optical disc
    75.
    发明授权
    Optical disc including a learning area having first and second regions, and methods for reproducing and recording data on the optical disc 有权
    包括具有第一和第二区域的学习区域的光盘以及用于在光盘上再现和记录数据的方法

    公开(公告)号：US07920459B2

    公开(公告)日：2011-04-05

    申请号：US12335106

    申请日：2008-12-15

    Applicant: Atsushi Nakamura ,  Mamoru Shoji ,  Takashi Ishida

    Inventor： Atsushi Nakamura ,  Mamoru Shoji ,  Takashi Ishida

    IPC: G11B7/24

    CPC classification number: G11B7/00745 ,  G11B7/00454 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/0956 ,  G11B7/126 ,  G11B7/1267 ,  G11B2007/0013

    Abstract: When recording or reading an optical disc having plural data recording layers, which data recording layer the light spot is focused on is detected to improve playback signal quality and signals written to the layer on which the light spot is focused are read more reliably. A convergent lens converges the laser beam on the optical disc, and a focus controller controls the focal point of the laser beam on the data layer. A tracking controller positions and tracks the focal point of the laser beam converged by the convergent lens on a track of the optical disc. A photodetector detects the reflected laser beam from the disc. A convergence detector then detects the convergence state of the laser beam emitted to the plural data recording layers. Based on output from the convergence detector, the laser driver is controlled to separately set beam power appropriately for each of the plural data layers of the disc during playback.

    Abstract translation: 当记录或读取具有多个数据记录层的光盘时，检测到该光斑聚焦的哪个数据记录层以提高重放信号质量，并且更可靠地读取写入到其上聚焦光点的层的信号。 会聚透镜将激光束会聚在光盘上，并且聚焦控制器控制激光束在数据层上的焦点。 跟踪控制器将由会聚透镜会聚的激光束的焦点位置并跟踪在光盘的轨道上。 光电检测器检测来自盘的反射激光束。 然后，会聚检测器检测发射到多个数据记录层的激光束的会聚状态。 基于会聚检测器的输出，激光驱动器被控制为在回放期间对盘的多个数据层中的每一个分别设置光束功率。

    OPTICAL DISC, OPTICAL DISC RECORDING APPARATUS, AND OPTICAL DISC RECORDING METHOD
    79.
    发明申请
    OPTICAL DISC, OPTICAL DISC RECORDING APPARATUS, AND OPTICAL DISC RECORDING METHOD 有权
    光盘，光盘记录装置和光盘记录方法

    公开(公告)号：US20090201780A1

    公开(公告)日：2009-08-13

    申请号：US12425732

    申请日：2009-04-17

    Applicant: Takashi Ishida ,  Motoshi Ito

    Inventor： Takashi Ishida ,  Motoshi Ito

    IPC: G11B7/12

    CPC classification number: G11B7/00736 ,  G11B7/00456 ,  G11B7/0062 ,  G11B7/126 ,  G11B20/10 ,  G11B20/1217 ,  G11B27/034 ,  G11B27/329 ,  G11B2020/1221 ,  G11B2020/1232 ,  G11B2020/1294 ,  G11B2220/20 ,  G11B2220/2537

    Abstract: Drive information is updated to always include the recording/playback conditions determined from the most recent learning process on a data recording medium. The data recording medium has a data recording area for recording data, and a drive information area for recording drive information. The drive information includes a plurality of drive-specific information records. Each of the plural drive-specific information records defines the operating conditions of the data recording and playback apparatus when a data recording and playback apparatus that can load and access the data recording medium reads or writes data. The plural drive-specific information records are arranged chronologically according to when the information was recorded to the data recording medium.

    Abstract translation: 驱动信息被更新为始终包括从数据记录介质上的最新学习过程确定的记录/播放条件。 数据记录介质具有用于记录数据的数据记录区域和用于记录驱动信息的驱动信息区域。 驱动器信息包括多个驱动器专用信息记录。 当能够加载和访问数据记录介质的数据记录和重放装置读取或写入数据时，多个驱动器专用信息记录中的每一个定义数据记录和重放装置的操作条件。 根据信息被记录到数据记录介质的时间顺序排列多个驱动器专用信息记录。

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