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    Recording medium having information reproducible using near-field light
    3.
    发明授权
    Recording medium having information reproducible using near-field light 失效
    具有使用近场光可再现的信息的记录介质

    公开(公告)号：US06587426B1

    公开(公告)日：2003-07-01

    申请号：US09495275

    申请日：2000-01-31

    申请人： Manabu Oumi ,  Yasuyuki Mitsuoka ,  Norio Chiba ,  Nobuyuki Kasama ,  Kenji Kato ,  Takashi Niwa

    发明人： Manabu Oumi ,  Yasuyuki Mitsuoka ,  Norio Chiba ,  Nobuyuki Kasama ,  Kenji Kato ,  Takashi Niwa

    IPC分类号： G11B724

    CPC分类号： B82Y10/00 ,  G11B7/005 ,  G11B7/12 ,  G11B7/24

    摘要： A recording medium and near-field optical probe utilizing near-field light to achieve high density of information recording and hence enhance resolution in reproducing. A phase shift arrangement layer is formed arranged alternately with a phase shifter region to cause shift by 180 degrees in incident light and a transmission region transparent for a wavelength of the incident light. Furthermore, a row of data marks are arranged in a position above the phase shifter regions and transmission region. Due to this, cancellation is made between spread of near-field light due to incident light transmitted through the phase shifter region and spread of near-field light due to incident light transmitted through the transmission region, providing sharpness in an intensity distribution of near-field light over the data mark. Also, a phase shifter is provided at a through-hole of the near-field optical probe, enabling to produce more localized near-field light.

    摘要翻译： 利用近场光的记录介质和近场光学探针实现高密度信息记录，从而提高再现中的分辨率。一种移相排列层与移相器区域交替地形成，以使事件偏移180度 光和对入射光的波长透明的透射区域。 此外，一排数据标记被布置在移相器区域和透射区域上方的位置。 由此，由于通过移相器区域传播的入射光和由于透射透射区域的入射光而引起的近场光的扩散，导致的近场光的扩散之间的消除，提供近场光的强度分布的锐度， 数据标记上的场灯。 此外，在近场光学探针的通孔处设置有移相器，能够产生更局部的近场光。

    Information reproducing apparatus and information reproducing method
    5.
    发明授权
    Information reproducing apparatus and information reproducing method 失效
    信息再现装置和信息再现方法

    公开(公告)号：US08289819B2

    公开(公告)日：2012-10-16

    申请号：US12383920

    申请日：2009-03-30

    申请人： Manabu Oumi ,  Yasuyuki Mitsuoka ,  Norio Chiba ,  Nobuyuki Kasama ,  Kenji Kato ,  Takashi Niwa

    发明人： Manabu Oumi ,  Yasuyuki Mitsuoka ,  Norio Chiba ,  Nobuyuki Kasama ,  Kenji Kato ,  Takashi Niwa

    IPC分类号： G11B7/00

    CPC分类号： B82Y10/00 ,  G11B7/0938 ,  G11B7/12 ,  G11B7/1387 ,  G11B7/24085

    摘要： An information reproducing apparatus has a medium with a linear tracking mark extending in a scanning direction and a linear data mark extending in a direction orthogonal to the scanning direction. A light control unit irradiates the data mark with a first near-field light polarized in the scanning direction and irradiates the tracking mark with a second near-field light polarized in the direction orthogonal to the scanning direction. A detector detects light scattered by the data mark and the tracking mark irradiated with the first near-field light and the second near-field light, respectively. A signal processing unit processes a first output signal from the detector corresponding to the detected light scattered by the data mark and processes a second output signal from the detector corresponding to the detected light scattered by the tracking mark. The signal processing unit has a control circuit that carries out tracking control in accordance with an intensity of the second output signal and that carries out access control in accordance with an intensity of the first output signal.

    摘要翻译： 一种信息再现装置具有在扫描方向上延伸的线性跟踪标记的介质和在与扫描方向正交的方向上延伸的线性数据标记。 光控制单元以沿扫描方向偏振的第一近场光照射数据标记，并以与扫描方向正交的方向偏振的第二近场光照射跟踪标记。 检测器分别检测由第一近场光和第二近场光照射的数据标记和跟踪标记所散射的光。 信号处理单元处理来自检测器的对应于由数据标记散射的检测到的光的第一输出信号，并且处理来自检测器的对应于由跟踪标记散射的检测到的光的第二输出信号。 信号处理单元具有控制电路，该控制电路根据第二输出信号的强度执行跟踪控制，并根据第一输出信号的强度进行访问控制。

    Recording apparatus
    6.
    发明授权
    Recording apparatus 失效
    记录装置

    公开(公告)号：US07301888B2

    公开(公告)日：2007-11-27

    申请号：US11340010

    申请日：2006-01-24

    申请人： Nobuyuki Kasama ,  Norio Chiba ,  Yasuyuki Mitsuoka ,  Manabu Oumi ,  Kenji Kato ,  Takashi Niwa ,  Kunio Nakajima

    发明人： Nobuyuki Kasama ,  Norio Chiba ,  Yasuyuki Mitsuoka ,  Manabu Oumi ,  Kenji Kato ,  Takashi Niwa ,  Kunio Nakajima

    IPC分类号： G11B7/00

    CPC分类号： G11B7/0908 ,  B82Y10/00 ,  G11B7/127 ,  G11B7/1275 ,  G11B7/1387 ,  Y10S977/862 ,  Y10S977/947

    摘要： In a recording apparatus for reproducing information recorded on a recording medium by utilizing near-field light, the recording apparatus realizes reliable information reproduction with a simple structure. Illumination light 20 is illuminated to the recording medium 10 to create near-field light on a surface of the recording medium 10. The created near-field light is scattered by a microscopic aperture 12 formed in the aperture element 11 so that scattering light (propagation light) thereof is detected to create a reproduced signal. Derived from the created reproduced light a distance control signal representative of a distance between the microscopic aperture 12 and the recording medium 10. Based on the distance control signal, the aperture element 11 is controlled in position. Due to this, the microscopic aperture 12 is brought into proximity to the recording medium 10.

    摘要翻译： 在用于通过利用近场光再现记录在记录介质上的信息的记录装置中，记录装置以简单的结构实现可靠的信息再现。 照明光20被照射到记录介质10上，以在记录介质10的表面上产生近场光。 所产生的近场光被形成在孔元件11中的微细孔12散射，从而检测其散射光（传播光）以产生再现信号。 从创建的再现光中衍生出表示微观孔12和记录介质10之间的距离的距离控制信号。 基于距离控制信号，光圈元件11被控制在适当位置。 由此，使微细孔12靠近记录介质10。

    Recording medium having information reproducible using near-field light
    8.
    发明授权
    Recording medium having information reproducible using near-field light 失效
    具有使用近场光可再现的信息的记录介质

    公开(公告)号：US06831887B2

    公开(公告)日：2004-12-14

    申请号：US10367138

    申请日：2003-02-14

    申请人： Manabu Oumi ,  Yasuyuki Mitsuoka ,  Norio Chiba ,  Nobuyuki Kasama ,  Kenji Kato ,  Takashi Niwa

    发明人： Manabu Oumi ,  Yasuyuki Mitsuoka ,  Norio Chiba ,  Nobuyuki Kasama ,  Kenji Kato ,  Takashi Niwa

    IPC分类号： G11B724

    CPC分类号： B82Y10/00 ,  G11B7/005 ,  G11B7/12 ,  G11B7/24

    摘要： A recording medium stores information that is reproducible utilizing near-field light. A phase shift arrangement layer is formed with alternately arranged phase shifter regions for shifting incident light by 180 degrees and transmission regions that are transparent to the incident light. A row of data marks is arranged above the phase shifter regions and transmission regions. As a result, the spread of near-field light due to incident light transmitted through the phase shifter regions and transmission regions is canceled, to provide a sharp distribution of near-field light over the data marks. light.

    摘要翻译： 记录介质存储利用近场光可再现的信息。 相移装置层形成有用于将入射光偏移180度的交替排列的移相区域和对入射光透明的透射区域。 一行数据标记设置在移相器区域和透射区域的上方。 结果，由于透过移相器区域和透射区域的入射光引起的近场光的扩散被消除，从而在数据标记上提供近场光的清晰分布。 光。

    Information recording medium and information reproducing apparatus
    9.
    发明授权
    Information recording medium and information reproducing apparatus 失效
    信息记录介质和信息再现装置

    公开(公告)号：US06580677B1

    公开(公告)日：2003-06-17

    申请号：US09486751

    申请日：2000-06-16

    申请人： Norio Chiba ,  Yasuyuki Mitsuoka ,  Manabu Oumi ,  Nobuyuki Kasama ,  Takashi Niwa

    发明人： Norio Chiba ,  Yasuyuki Mitsuoka ,  Manabu Oumi ,  Nobuyuki Kasama ,  Takashi Niwa

    IPC分类号： G11B700

    CPC分类号： G11B7/24085 ,  B82Y10/00 ,  G11B7/013 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/131 ,  G11B7/1384 ,  G11B7/1387 ,  G11B7/24

    摘要： There is provided an information recording medium and an information reproducing apparatus capable of carrying out information reproduction and tracking control by utilizing near-field light. A data bit 12 of a convex having a section orthogonal to a tracking direction in a triangular shape is formed on an information recording medium 3 as an information unit, by scattering near-field light formed at a reproducing probe 1 at inclined faces of the data bit 12 with directionalities, fluxes of reflected and scattered light thereby are detected by reproduced light detectors 6 and 7 arranged symmetrically in a left and right direction relative to a central axis of the reproducing probe 1 along the tracking direction, a differential signal between the detected signals is outputted by a difference circuit 20 and an actuator 22 is driven by the differential signal via a tracking signal forming circuit 21 and a position of the reproducing probe 1 is controlled to carry out the tracking control.

    摘要翻译： 提供了一种能够通过利用近场光执行信息再现和跟踪控制的信息记录介质和信息再现装置。 在作为信息单元的信息记录介质3上形成具有与三角形的跟踪方向正交的部分的凸起的数据位12，通过在数据的倾斜面处散射形成在再现探头1处的近场光 具有方向性的位12，由此由跟踪方向相对于再现探头1的中心轴在左右方向上对称布置的再现光检测器6和7检测反射和散射光的通量，检测到的差分信号 信号由差分电路20输出，并且致动器22经由跟踪信号形成电路21由差分信号驱动，并且再现探头1的位置被控制以执行跟踪控制。