Near field optical recording medium
    1.
    发明授权
    Near field optical recording medium 失效
    近场光记录介质

    公开(公告)号:US06804189B2

    公开(公告)日:2004-10-12

    申请号:US09826853

    申请日:2001-04-06

    IPC分类号: G11B700

    摘要: A near field optical recording medium having a header area in which at least an addressing signal or a timing signal is recorded by means of a concave/convex pattern with laser light using a flying optical head. When a concave/convex portion of the concave/convex pattern is to be detected, either an effect due to a change in returning light caused by distance wherein the reflectance is changed or an effect due to a change in returning light caused by a diffraction effect is sufficiently larger, or a combination of such effects (changes by distance effect and changes by diffraction effect) are not weakened by each other, so that header information recorded by the concave/convex pattern can correctly be reproduced even in a super-high density recording medium using near field light.

    摘要翻译: 一种具有首标区域的近场光学记录介质,其中使用飞行光学头通过具有激光的凹凸图案来记录至少寻址信号或定时信号。 当要检测凹/凸图案的凹/凸部分时,由反射率变化的距离引起的返回光的变化或由衍射效应引起的返回光的变化引起的效果 或者这些效果的组合(距离效应的变化和衍射效应的变化)不会相互削弱,所以即使在超高密度下也可以正确地再现由凹凸图案记录的标题信息 使用近场光的记录介质。

    Magneto-optical recording medium
    2.
    发明授权
    Magneto-optical recording medium 失效
    磁光记录介质

    公开(公告)号:US06802073B1

    公开(公告)日:2004-10-05

    申请号:US09762440

    申请日:2003-04-29

    IPC分类号: G11B11105

    CPC分类号: G11B11/10584

    摘要: Disclosed are magneto-optical recording media including at least a reflection layer, a recording layer and a dielectric layer laminated on a substrate in this order, wherein the thickness of the dielectric layer is not less than 140 nm or wherein the dielectric layer is provided by the lamination of upper dielectric layer and lower dielectric layer in which the thermal conductivity of the upper dielectric layer is higher than that of the lower dielectric layer. By arranging the thickness of the dielectric layer in a specific range, the surface roughness of a media in not more than 1.5 nm, and providing a reflection layer composed of a noble metal alloy, achieved is a magneto-optical recording medium able to record constantly in near-field magneto-optical recording, suitable for narrow track pitch, and having excellent SNR, resolution, and recording sensitivity.

    摘要翻译: 公开了依次包括至少层叠在基板上的反射层,记录层和电介质层的磁光记录介质,其中介电层的厚度不小于140nm,或者介电层由 上介电层和下电介质层的叠层,其中上电介质层的导热率高于下电介质层的导热率。 通过将介电层的厚度设置在特定范围内,介质的表面粗糙度不大于1.5nm,并且提供由贵金属合金构成的反射层,是能够恒定记录的磁光记录介质 在近场磁光记录中,适用于窄轨道间距,并且具有优异的SNR,分辨率和记录灵敏度。

    Information measuring apparatus using a fine channel device
    7.
    发明授权
    Information measuring apparatus using a fine channel device 有权
    使用精细通道装置的信息测量装置

    公开(公告)号:US06791677B2

    公开(公告)日:2004-09-14

    申请号:US10227342

    申请日:2002-08-26

    IPC分类号: G01N2100

    摘要: An information measuring apparatus having a fine channel device comprises at least one detector for measuring information supplied from a plurality of measuring portions formed in the fine channel device, a position-holding/determining means for holding and positioning the fine channel device, a rotating means for rotating the fine channel device at a predetermined angle, a position-determining means for positioning the measuring portion and the detector, wherein information supplied from the measuring portions in the fine channel device is measured successively by rotating the fine channel device at the predetermined angle, whereby information from the measuring portions is stably and efficiently measured.

    摘要翻译: 具有精细通道装置的信息测量装置包括至少一个用于测量从形成在精细通道装置中的多个测量部分提供的信息的检测器,用于保持和定位精细通道装置的位置保持/确定装置,旋转装置 用于以预定角度旋转细通道装置,用于定位测量部分和检测器的位置确定装置,其中通过以预定角度旋转精细通道装置来连续测量从精细通道装置中的测量部分提供的信息 从而稳定有效地测量来自测量部的信息。