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    Information readout method for non mask layer type optical information medium
    1.
    发明授权
    Information readout method for non mask layer type optical information medium 有权
    非掩模层型光信息介质的信息读出方法

    公开(公告)号：US07859968B2

    公开(公告)日：2010-12-28

    申请号：US12352304

    申请日：2009-01-12

    申请人： Takashi Kikukawa ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroshi Shingai

    发明人： Takashi Kikukawa ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroshi Shingai

    IPC分类号： G11B7/0045

    CPC分类号： G11B7/005 ,  G11B7/1263 ,  G11B7/24

    摘要： An information readout method for an optical information medium comprising an information recording layer having pits or recorded marks representative of information data involves the step of irradiating a laser beam to the information recording layer through an objective lens for providing readings of the pits or recorded marks. When the laser beam has a wavelength λ of 400 to 410 nm, the objective lens has a numerical aperture NA of 0.70 to 0.85, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 0.4 mW for the laser beam. When the laser beam has a wavelength λ of 630 to 670 nm, the objective lens has a numerical aperture NA of 0.60 to 0.65, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 1.0 mW for the laser beam. Pits or recorded marks of a size approximate to the resolution limit determined by diffraction can be read out at a high C/N.

    摘要翻译： 包括具有表示信息数据的凹坑或记录标记的信息记录层的光信息介质的信息读出方法包括通过用于提供凹坑或记录标记的读数的物镜将激光束照射到信息记录层的步骤。 当激光束具有400至410nm的波长λ时，物镜的数值孔径NA为0.70至0.85，并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少0.4mW。 当激光束具有630至670nm的波长λ时，物镜的数值孔径NA为0.60至0.65，并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少1.0mW。 通过衍射确定的大小接近分辨率极限的刻痕或记录标记可以高C / N读出。

    Information readout method for non mask layer type optical information medium
    2.
    发明授权
    Information readout method for non mask layer type optical information medium 有权
    非掩模层型光信息介质的信息读出方法

    公开(公告)号：US07496019B2

    公开(公告)日：2009-02-24

    申请号：US10125476

    申请日：2002-04-19

    申请人： Takashi Kikukawa ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroshi Shingai

    发明人： Takashi Kikukawa ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroshi Shingai

    IPC分类号： G11B7/0045

    CPC分类号： G11B7/005 ,  G11B7/1263 ,  G11B7/24

    摘要： An information readout method for an optical information medium comprising an information recording layer having pits or recorded marks representative of information data involves the step of irradiating a laser beam to the information recording layer through an objective lens for providing readings of the pits or recorded marks. When the laser beam has a wavelength λ of 400 to 410 nm, the objective lens has a numerical aperture NA of 0.70 to 0.85, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 0.4 mW for the laser beam. When the laser beam has a wavelength λ of 630 to 670 nm, the objective lens has a numerical aperture NA of 0.60 to 0.65, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 1.0 mW for the laser beam. Pits or recorded marks of a size approximate to the resolution limit determined by diffraction can be read out at a high C/N.

    摘要翻译： 包括具有表示信息数据的凹坑或记录标记的信息记录层的光信息介质的信息读出方法包括通过用于提供凹坑或记录标记的读数的物镜将激光束照射到信息记录层的步骤。 当激光束具有400至410nm的波长λ时，物镜的数值孔径NA为0.70至0.85，并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少0.4mW。 当激光束具有630至670nm的波长λ时，物镜的数值孔径NA为0.60至0.65，并且凹坑或记录的标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少1.0mW。 通过衍射确定的大小接近分辨率极限的刻痕或记录标记可以高C / N读出。

    Optical information medium having high resolution beyond a diffraction limit and reading method
    3.
    发明授权
    Optical information medium having high resolution beyond a diffraction limit and reading method 有权
    光学信息介质具有超过衍射极限的分辨率和读取方法

    公开(公告)号：US06965556B1

    公开(公告)日：2005-11-15

    申请号：US09609898

    申请日：2000-07-03

    申请人： Takashi Kikukawa ,  Hajime Utsunomiya ,  Hiroshi Shingai ,  Tatsuya Kato

    发明人： Takashi Kikukawa ,  Hajime Utsunomiya ,  Hiroshi Shingai ,  Tatsuya Kato

    IPC分类号： G11B7/005 ,  G11B7/24

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

    摘要： In an optical information medium having an information bearing surface having projections and depressions and/or capable of forming recorded marks, a functional layer is added. The information borne on the information bearing surface can be read by using reading light of a wavelength longer than 4NA·PL wherein PL is the minimum size of the projections and depressions or the recorded marks and NA is the numerical aperture of a reading optical system, setting the power of the reading light within such a range that the functional layer does not change its complex index of refraction, and irradiating the reading light 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 medium enables reading at a high resolution beyond the diffraction limit.

    摘要翻译： 在具有具有凹凸和/或能够形成记录标记的信息承载面的光信息介质中，添加功能层。 可以通过使用长于4NA的波长的读取光读取承载在信息承载表面上的信息。其中P L L是最小尺寸的凹凸 或记录标记，NA是读取光学系统的数值孔径，将读取光的功率设定在功能层不改变其复杂折射率的范围内，并将读取光照射到信息承载面 通过功能层或信息承载表面通过功能层或通过信息承载表面到功能层构成。 该介质能够以超过衍射极限的高分辨率进行读取。

    Optical information medium including an information bearing surface and a functional layer, and reading method
    4.
    发明授权
    Optical information medium including an information bearing surface and a functional layer, and reading method 有权
    包括信息承载面和功能层的光信息介质，以及读取方法

    公开(公告)号：US07701838B2

    公开(公告)日：2010-04-20

    申请号：US11168475

    申请日：2005-06-29

    申请人： Takashi Kikukawa ,  Hajime Utsunomiya ,  Hiroshi Shingai ,  Tatsuya Kato

    发明人： Takashi Kikukawa ,  Hajime Utsunomiya ,  Hiroshi Shingai ,  Tatsuya Kato

    IPC分类号： G11B7/24

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

    摘要： In an optical information medium having an information bearing surface having projections and depressions and/or capable of forming recorded marks, a functional layer is added. The information borne on the information bearing surface can be read by using reading light of a wavelength longer than 4NA·PL wherein PL is the minimum size of the projections and depressions or the recorded marks and NA is the numerical aperture of a reading optical system, setting the power of the reading light within such a range that the functional layer does not change its complex index of refraction, and irradiating the reading light 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 medium enables reading at a high resolution beyond the diffraction limit.

    摘要翻译： 在具有具有凹凸和/或能够形成记录标记的信息承载面的光信息介质中，添加功能层。 可以通过使用波长大于4NA·PL的读取光读取信息承载面上的信息，其中PL是凹凸或记录标记的最小尺寸，NA是读取光学系统的数值孔径， 将读取光的功率设定在功能层不改变其复杂折射率的范围内，并且通过功能层将读取光照射到由功能层构成的信息承载面或信息承载面，或 通过信息轴承表面到功能层。 该介质能够以超过衍射极限的高分辨率进行读取。

    Optical information medium and reading method
    6.
    发明申请
    Optical information medium and reading method 有权
    光信息媒体和阅读方式

    公开(公告)号：US20050237912A1

    公开(公告)日：2005-10-27

    申请号：US11168475

    申请日：2005-06-29

    申请人： Takashi Kikukawa ,  Hajime Utsunomiya ,  Hiroshi Shingai ,  Tatsuya Kato

    发明人： Takashi Kikukawa ,  Hajime Utsunomiya ,  Hiroshi Shingai ,  Tatsuya Kato

    IPC分类号： G11B7/005 ,  G11B7/24 ,  G11B7/26

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

    摘要： In an optical information medium having an information bearing surface having projections and depressions and/or capable of forming recorded marks, a functional layer is added. The information borne on the information bearing surface can be read by using reading light of a wavelength longer than 4NA·PL wherein PL is the minimum size of the projections and depressions or the recorded marks and NA is the numerical aperture of a reading optical system, setting the power of the reading light within such a range that the functional layer does not change its complex index of refraction, and irradiating the reading light 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 medium enables reading at a high resolution beyond the diffraction limit.

    摘要翻译： 在具有具有凹凸和/或能够形成记录标记的信息承载面的光信息介质中，添加功能层。 可以通过使用长于4NA的波长的读取光读取承载在信息承载表面上的信息。其中P L L是最小尺寸的凹凸 或记录标记，NA是读取光学系统的数值孔径，将读取光的功率设定在功能层不改变其复杂折射率的范围内，并将读取光照射到信息承载面 通过功能层或信息承载表面通过功能层或通过信息承载表面到功能层构成。 该介质能够以超过衍射极限的高分辨率进行读取。

    Optical recording method
    8.
    发明授权
    Optical recording method 有权
    光记录方式

    公开(公告)号：US06438085B1

    公开(公告)日：2002-08-20

    申请号：US09398040

    申请日：1999-09-17

    申请人： Tatsuya Kato ,  Isamu Kuribayashi ,  Hajime Utsunomiya ,  Takashi Kikukawa

    发明人： Tatsuya Kato ,  Isamu Kuribayashi ,  Hajime Utsunomiya ,  Takashi Kikukawa

    IPC分类号： G11B700

    CPC分类号： G11B7/126 ,  G11B7/00454 ,  G11B7/006

    摘要： In the recording of an optical recording medium of phase change type according to the present invention, favorable properties are realized even when the recording is effected in a wide range of linear velocity. The optical recording method of the present invention is a method for recording an optical recording medium comprising a substrate and a recording layer of phase change type on the substrate. A pulse train is used as the recording waveform for laser beam modulation during the formation of one recording mark. The pulse train includes at least one unit pulse comprising an upward pulse and a subsequent downward pulse, and the relation (I): 0.25≦(TclH/TclL)×n≦1.25  (I). is satisfied when width of the last downward pulse standardized by the reciprocal of linear velocity is TclH at a linear velocity of V and TclL at a linear velocity of V/n (n is a real number greater than 1).

    摘要翻译： 在根据本发明的相变型光记录介质的记录中，即使在宽范围的线速度下进行记录，也实现了良好的性能。 本发明的光记录方法是在基板上记录包括基板和相变型记录层的光记录介质的方法。 在形成一个记录标记期间，使用脉冲串作为用于激光束调制的记录波形。 脉冲串包括至少一个包括向上脉冲和随后的向下脉冲的单位脉冲，并且当以线速度V为标准化的线速度的倒数的最后向下脉冲的宽度为TclH时，满足关系式（I）：V 和TclL以线性速度V / n（n是大于1的实数）。

    Phase-change type optical recording medium having recording marks wider than a recording track
    9.
    发明授权
    Phase-change type optical recording medium having recording marks wider than a recording track 有权
    具有比记录轨道宽的记录标记的相变型光学记录介质

    公开(公告)号：US6125101A

    公开(公告)日：2000-09-26

    申请号：US352781

    申请日：1999-07-14

    申请人： Takashi Kikukawa ,  Hajime Utsunomiya

    发明人： Takashi Kikukawa ,  Hajime Utsunomiya

    IPC分类号： G11B7/24 ,  B41M5/26 ,  G11B7/00 ,  G11B7/0045 ,  G11B7/0055 ,  G11B7/013

    CPC分类号： G11B7/24085 ,  G11B7/00454

    摘要： Deterioration of properties associated with high-density recording is suppressed in the recording of a phase change optical recording medium wherein a land or groove is used for the recording track. A method for recording an optical recording medium having a substrate having grooves formed thereon and a recording layer of phase change type on the substrate wherein a groove or a land between two adjacent grooves is used for the recording track is provided. In this method, the record marks are formed such that:M.sub.W /T.sub.W >1when T.sub.W is width of the recording track, and M.sub.W is width of the record mark.

    摘要翻译： 相位变化光记录介质的记录抑制了与高密度记录有关的特性的恶化，其中在记录轨道上使用焊盘或凹槽。 提供一种用于记录具有在其上形成有沟槽的基板和在基板上的相变型记录层的光记录介质的方法，其中在两个相邻槽之间的槽或焊盘用于记录轨道。 在该方法中，记录标记形成为：当TW是记录轨道的宽度时MW / TW> 1，MW是记录标记的宽度。