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    OPTICAL INFORMATION REPRODUCING METHOD, OPTICAL INFORMATION REPRODUCING DEVICE, AND OPTICAL INFORMATION RECORDING MEDIUM
    1.
    发明申请
    OPTICAL INFORMATION REPRODUCING METHOD, OPTICAL INFORMATION REPRODUCING DEVICE, AND OPTICAL INFORMATION RECORDING MEDIUM 失效
    光信息再现方法，光信息再现设备和光信息记录介质

    公开(公告)号：US20090034391A1

    公开(公告)日：2009-02-05

    申请号：US12065059

    申请日：2006-07-31

    申请人： Kazuhiko Aoki ,  Takeharu Shibatoko

    发明人： Kazuhiko Aoki ,  Takeharu Shibatoko

    IPC分类号： G11B7/00

    CPC分类号： G11B7/24 ,  G11B7/005 ,  G11B7/1263 ,  G11B7/1267 ,  G11B11/10515 ,  G11B11/10584 ,  G11B11/10595

    摘要： [Problems] To provide an optical information reproducing device capable of performing excellent super resolution reproduction at all times without complicating the hardware structure.[Means for Solving Problems] An optical information reproducing device (10) irradiates a laser beam to an optical information recording medium (16) in which effective spot size of the irradiated laser beam changes in accordance with intensity of the laser beam and reproduces information. The optical information reproducing device (10) includes: an asymmetry detection unit (13) as asymmetry detection device for obtaining asymmetry from a reproduction signal obtained by reproducing the information; and a laser power adjusting unit (14) as laser power adjusting device for controlling the laser beam intensity according to the asymmetry obtained by the asymmetry detection unit (13).

    摘要翻译： [问题]提供一种能够一直执行优异的超分辨率再现的光学信息再现装置，而不会使硬件结构复杂化。 解决问题的手段光信息再现装置（10）将激光束照射到光信息记录介质（16），其中照射的激光束的有效光点尺寸根据激光束的强度而变化并再现信息。 光信息再现装置（10）包括：作为不对称检测装置的不对称检测单元（13），用于通过再现信息获得的再现信号获得不对称性; 以及激光功率调整单元（14），其作为用于根据由不对称检测单元（13）获得的不对称来控制激光束强度的激光功率调节装置。

    Optical information reproducing method, optical information reproducing device, and optical information recording medium for performing reproduction of information by using laser beams
    2.
    发明授权
    Optical information reproducing method, optical information reproducing device, and optical information recording medium for performing reproduction of information by using laser beams 失效
    光信息再现方法，光信息再现装置和用于通过使用激光束执行信息再现的光信息记录介质

    公开(公告)号：US07903511B2

    公开(公告)日：2011-03-08

    申请号：US12065059

    申请日：2006-07-31

    申请人： Kazuhiko Aoki ,  Takeharu Shibatoko

    发明人： Kazuhiko Aoki ,  Takeharu Shibatoko

    IPC分类号： G11B15/52

    CPC分类号： G11B7/24 ,  G11B7/005 ,  G11B7/1263 ,  G11B7/1267 ,  G11B11/10515 ,  G11B11/10584 ,  G11B11/10595

    摘要： [PROBLEMS] To provide an optical information reproducing device capable of performing excellent super resolution reproduction at all times without complicating the hardware structure. [MEANS FOR SOLVING PROBLEMS] An optical information reproducing device (10) irradiates a laser beam to an optical information recording medium (16) in which effective spot size of the irradiated laser beam changes in accordance with intensity of the laser beam and reproduces information. The optical information reproducing device (10) includes: an asymmetry detection unit (13) as asymmetry detection device for obtaining asymmetry from a reproduction signal obtained by reproducing the information; and a laser power adjusting unit (14) as laser power adjusting device for controlling the laser beam intensity according to the asymmetry obtained by the asymmetry detection unit (13).

    摘要翻译： [问题]提供一种能够始终进行优异的超分辨率再现而不使硬件结构复杂化的光学信息再现装置。 解决问题的手段光信息再现装置（10）将激光束照射到光信息记录介质（16），其中照射的激光束的有效光斑尺寸根据激光束的强度而变化并再现信息。 光信息再现装置（10）包括：作为不对称检测装置的不对称检测单元（13），用于通过再现信息获得的再现信号获得不对称性; 以及激光功率调整单元（14），其作为用于根据由不对称检测单元（13）获得的不对称来控制激光束强度的激光功率调节装置。

    Optical information recording and reproducing medium
    4.
    发明授权
    Optical information recording and reproducing medium 失效
    光信息记录和再现介质

    公开(公告)号：US07489620B2

    公开(公告)日：2009-02-10

    申请号：US10525079

    申请日：2003-08-21

    申请人： Mitsuya Okada ,  Toshiaki Iwanaga ,  Takeharu Shibatoko ,  Hideki Tanabe ,  Masashi Kubota ,  Masaki Nakano ,  Satoshi Sugaya

    发明人： Mitsuya Okada ,  Toshiaki Iwanaga ,  Takeharu Shibatoko ,  Hideki Tanabe ,  Masashi Kubota ,  Masaki Nakano ,  Satoshi Sugaya

    IPC分类号： G11B7/24

    CPC分类号： G11B7/24038 ,  G11B7/00456 ,  G11B7/0062 ,  G11B7/00736 ,  G11B2007/0013

    摘要： Optical information recording and reproducing medium 10 has two recording layers of first and second recording layers 12 and 14, from a laser beam incident surface side. In each control area 21, recording layer management information containing at least information indicating recording states of a plurality of areas into which the inside of data recording area 22 of each recording layer is divided is recorded. When recording or reproducing is performed on the second recording layer 14, the recording layer management information is checked, and a laser beam output is changed based on a recording state of an area corresponding to the first recording layer 12.

    摘要翻译： 光信息记录和再现介质10具有来自激光入射表面侧的第一和第二记录层12和14的两个记录层。 在每个控制区域21中，记录至少包含指示每个记录层的数据记录区域22的内部划分成多个区域的记录状态的信息的记录层管理信息。 当在第二记录层14上执行记录或再现时，检查记录层管理信息，并且基于与第一记录层12相对应的区域的记录状态来改变激光束输出。