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    Optical recording method and optical recording medium
    1.
    发明公开
    Optical recording method and optical recording medium 审中-公开
    的光记录方法和光记录介质

    公开(公告)号：EP1197956A3

    公开(公告)日：2007-04-11

    申请号：EP01308616.0

    申请日：2001-10-09

    申请人： TDK Corporation

    发明人： Kato, Tatsuya, c/o TDK Corporation ,  Utsunomiya, Hajime, c/o TDK Corporation ,  Inoue, Hiroyasu, c/o TDK Corporation ,  Shingai, Hiroshi, c/o TDK Corporation ,  Tanaka, Yoshitomo, c/o TDK Corporation

    IPC分类号： G11B7/0045 ,  G11B7/006 ,  G11B7/26

    CPC分类号： G11B7/24085 ,  G11B7/00454 ,  G11B7/006

    摘要： Increase of jitter in a phase change optical recording medium is suppressed with no extreme decrease in the crystallization speed of the recording layer when the medium is overwritten at a high linear velocity. In addition, in a disk-shaped medium operated at a constant angular velocity, the overwriting is accomplished with the increase of jitter suppressed over the entire area of the medium. Provided is an optical recording method for recording a disk-shaped optical recording medium having a phase change recording layer which is rotated at a constant angular velocity, wherein amorphous recorded marks are formed in the recording layer. In this method, the minimum recorded mark is formed such that W L /M L incrementally or gradually decreases from the radially inner side to the radially outer side of the optical recording medium, when the minimum signal has a length of S L , and when the minimum recorded mark corresponding to said minimum signal has its maximum width of M W , E W is 0.1 M W ; the position on the leading edge side of the recorded mark at the width of E W is designated effective leading edge; and the position on the trailing edge side of the recorded mark at the width of E W is designated effective trailing edge; the distance between the effective leading edge and the effective trailing edge is designated effective length M L ; and the distance between the effective leading edge and the position at which the width starts to decrease on the trailing edge side is designated W L .

    Optical recording method and optical recording medium
    4.
    发明公开
    Optical recording method and optical recording medium 审中-公开
    光记录方法和光记录介质

    公开(公告)号：EP1197956A2

    公开(公告)日：2002-04-17

    申请号：EP01308616.0

    申请日：2001-10-09

    申请人： TDK Corporation

    发明人： Kato, Tatsuya, c/o TDK Corporation ,  Utsunomiya, Hajime, c/o TDK Corporation ,  Inoue, Hiroyasu, c/o TDK Corporation ,  Shingai, Hiroshi, c/o TDK Corporation ,  Tanaka, Yoshitomo, c/o TDK Corporation

    IPC分类号： G11B7/0045 ,  G11B7/006 ,  G11B7/26

    CPC分类号： G11B7/24085 ,  G11B7/00454 ,  G11B7/006

    摘要： Increase of jitter in a phase change optical recording medium is suppressed with no extreme decrease in the crystallization speed of the recording layer when the medium is overwritten at a high linear velocity. In addition, in a disk-shaped medium operated at a constant angular velocity, the overwriting is accomplished with the increase of jitter suppressed over the entire area of the medium. Provided is an optical recording method for recording a disk-shaped optical recording medium having a phase change recording layer which is rotated at a constant angular velocity, wherein amorphous recorded marks are formed in the recording layer. In this method, the minimum recorded mark is formed such that W L /M L incrementally or gradually decreases from the radially inner side to the radially outer side of the optical recording medium, when the minimum signal has a length of S L , and when the minimum recorded mark corresponding to said minimum signal has its maximum width of M W , E W is 0.1 M W ; the position on the leading edge side of the recorded mark at the width of E W is designated effective leading edge; and the position on the trailing edge side of the recorded mark at the width of E W is designated effective trailing edge; the distance between the effective leading edge and the effective trailing edge is designated effective length M L ; and the distance between the effective leading edge and the position at which the width starts to decrease on the trailing edge side is designated W L .

    摘要翻译： 当介质以高线速重写时，相变光记录介质中抖动的增加被抑制，记录层的结晶速度没有极度降低。 另外，在以恒定角速度运行的盘形介质中，覆盖是在介质的整个区域上抑制抖动增加的情况下完成的。 提供了一种用于记录具有以恒定角速度旋转的相变记录层的盘形光记录介质的光记录方法，其中在记录层中形成非晶记录标记。 在该方法中，形成最小记录标记，使得当最小信号具有SL的长度时，以及当记录的最小值被记录时，WL / ML从光记录介质的径向内侧向径向外侧递增或逐渐减小 对应于所述最小信号的标记的最大宽度为MW，EW为0.1MW; EW宽度处记录标记的前缘侧的位置被指定为有效前缘; 并且在EW宽度处记录标记的后缘侧上的位置被指定为有效后缘; 有效前缘与有效后缘之间的距离被指定为有效长度ML; 并且后缘侧上的有效前缘与宽度开始减小的位置之间的距离被指定为WL。

    Optical information medium and reading method
    5.
    发明公开
    Optical information medium and reading method 审中-公开
    OptischerInformationsträgerund Leseverfahren

    公开(公告)号：EP1067534A2

    公开(公告)日：2001-01-10

    申请号：EP00302520.2

    申请日：2000-03-28

    申请人： TDK Corporation

    发明人： Kikukawa, Takashi, c/o TDK Corporation ,  Utsunomiya, Hajime, c/o TDK Corporation ,  Shingai, Hiroshi, c/o TDK Corporation ,  Kato, Tatsuya, c/o TDK Corporation

    IPC分类号： G11B7/24 ,  G11B7/013

    CPC分类号： B82Y10/00 ,  G11B7/0052 ,  G11B7/24 ,  G11B7/24085 ,  G11B7/252

    摘要： In an optical information medium having an information bearing surface (21) having projections and depressions and/or capable of forming recorded marks, a functional layer (10) is added. The information borne on the information bearing surface can be read when reading light of a wavelength longer than 4NA·P L wherein P L is the minimum size of the projections and depressions or recorded marks and NA is the numerical aperture of a reading optical system is irradiated to the information bearing surface constructed by the functional layer or to the information bearing surface through the functional layer or to the functional layer through the information bearing surface. The intensity of reflected light from the functional layer changes in linear proportion to a change in the power of the reading light. The medium enables reading at a high resolution beyond the diffraction limit.

    摘要翻译： 在具有具有凹凸的信息承载面（21）和/或能够形成记录标记的光信息介质中，添加功能层（10）。 当读取长于4NA.PL的波长的光时，可以读取信息承载表面上的信息，其中PL是突起和凹陷或记录标记的最小尺寸，NA是读取光学系统的数值孔径照射到 由功能层构成的信息承载面或通过功能层构成的信息承载面，或通过信息承载面构成功能层。 来自功能层的反射光的强度与读取光的功率的变化呈线性比例变化。 该介质能够以超过衍射极限的高分辨率进行读取。