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    Optical disk and optical disk recording and reproducing device
    1.
    发明授权
    Optical disk and optical disk recording and reproducing device 失效
    光盘和光盘记录和再现装置

    公开(公告)号：US07859983B2

    公开(公告)日：2010-12-28

    申请号：US10890916

    申请日：2004-07-13

    申请人： Junji Hirokane ,  Michinobu Mieda ,  Masanori Shimo

    发明人： Junji Hirokane ,  Michinobu Mieda ,  Masanori Shimo

    IPC分类号： G11B7/00

    CPC分类号： G11B7/24038 ,  G11B7/263

    摘要： An optical disk includes a plurality of disk sheets which are laminated, and each of which has a recording face on one of the surfaces and a flat back surface, wherein the plurality of disk sheets are laminated by adhesive layers in such a manner that between adjacent two disk sheets, a back surface of one of the disk sheets, on the opposite side of the surface where the recording face is formed, faces the disk surface of the other disk sheet. The foregoing structure realizes an optical disk of desirable recording/reproducing characteristics, which is flat and has a fixed interval between recording faces, and which permits the problems of coma aberration, spherical aberration, etc., to be suppressed.

    摘要翻译： 光盘包括层叠的多个盘片，并且每个盘片在其一个表面上具有记录面和平坦的后表面，其中所述多个盘片以粘合层层压，使得在相邻 在形成有记录面的表面的相对侧上的一个盘片的背面的两个盘片面对另一盘片的盘表面。 上述结构实现了平坦的并且在记录面之间具有固定间隔的期望的记录/再现特性的光盘，并且允许抑制彗差，球面像差等问题。

    Optical disk and optical disk recording and reproducing device
    3.
    发明申请
    Optical disk and optical disk recording and reproducing device 失效
    光盘和光盘记录和再现装置

    公开(公告)号：US20050013236A1

    公开(公告)日：2005-01-20

    申请号：US10890916

    申请日：2004-07-13

    申请人： Junji Hirokane ,  Michinobu Mieda ,  Masanori Shimo

    发明人： Junji Hirokane ,  Michinobu Mieda ,  Masanori Shimo

    IPC分类号： G11B7/24 ,  G11B7/26

    CPC分类号： G11B7/24038 ,  G11B7/263

    摘要： An optical disk includes a plurality of disk sheets which are laminated, and each of which has a recording face on one of the surfaces and a flat back surface, wherein the plurality of disk sheets are laminated by adhesive layers in such a manner that between adjacent two disk sheets, a back surface of one of the disk sheets, on the opposite side of the surface where the recording face is formed, faces the disk surface of the other disk sheet. The foregoing structure realizes an optical disk of desirable recording/reproducing characteristics, which is flat and has a fixed interval between recording faces, and which permits the problems of coma aberration, spherical aberration, etc., to be suppressed.

    摘要翻译： 光盘包括层叠的多个盘片，并且每个盘片在其一个表面上具有记录面和平坦的后表面，其中所述多个盘片以粘合层层压，使得在相邻 在形成有记录面的表面的相对侧上的一个盘片的背面的两个盘片面对另一盘片的盘表面。 上述结构实现了平坦的并且在记录面之间具有固定间隔的期望的记录/再现特性的光盘，并且允许抑制彗差，球面像差等问题。

    Magneto-optical recording medium having magnetization variable between in-plane magnetization and perpendicular magnetization
    5.
    发明授权
    Magneto-optical recording medium having magnetization variable between in-plane magnetization and perpendicular magnetization 失效
    具有在面内磁化和垂直磁化之间的磁化可变的磁光记录介质

    公开(公告)号：US5629908A

    公开(公告)日：1997-05-13

    申请号：US536168

    申请日：1995-09-29

    申请人： Junji Hirokane ,  Junichiro Nakayama ,  Michinobu Mieda ,  Akira Takahashi

    发明人： Junji Hirokane ,  Junichiro Nakayama ,  Michinobu Mieda ,  Akira Takahashi

    IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B11/00

    CPC分类号： G11B11/10586 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/10521 ,  G11B11/10595

    摘要： A magneto-optical recording medium comprising a readout layer, an intermediate layer, and a recording layer. Two light beams having high and low light intensities respectively are applied while applying an external magnetic field. The magnetization direction of the recording layer is changed according to information, by reversing the sub-lattice magnetic moment of the readout layer in the case of the high light intensity. The intermediate layer exhibits a perpendicular magnetization during the irradiation, and also exhibits an in-plane magnetization at room temperature. Since it is not necessary to provide a device for generating a magnetic field for initializing every recording, it is possible to avoid increase in the size of the recording and reproducing apparatus. Moreover, the magnetization direction of the readout layer can be easily controlled with an external magnetic field, and the optical modulation overwriting property can be stabilized.

    摘要翻译： 包括读出层，中间层和记录层的磁光记录介质。 在施加外部磁场的同时施加具有高和低光强度的两个光束。 在高光强度的情况下，通过反转读出层的亚晶格磁矩，根据信息改变记录层的磁化方向。 中间层在照射期间表现出垂直磁化，并且在室温下也表现出平面内的磁化强度。 由于不需要提供用于产生用于初始化每个记录的磁场的装置，因此可以避免记录和再现装置的尺寸的增加。 此外，可以通过外部磁场容易地控制读出层的磁化方向，并且可以稳定光学调制重写特性。

    Optical recording element and driving system
    7.
    发明授权
    Optical recording element and driving system 失效
    光学记录元件和驱动系统

    公开(公告)号：US5459711A

    公开(公告)日：1995-10-17

    申请号：US219253

    申请日：1994-03-29

    申请人： Kenji Ohta ,  Tetsuya Inui ,  Hiroyuki Katayama ,  Akira Takahashi ,  Junji Hirokane ,  Yukinori Nishitani ,  Michinobu Mieda ,  Kazuo Van

    发明人： Kenji Ohta ,  Tetsuya Inui ,  Hiroyuki Katayama ,  Akira Takahashi ,  Junji Hirokane ,  Yukinori Nishitani ,  Michinobu Mieda ,  Kazuo Van

    IPC分类号： G11B7/0045 ,  G11B7/013 ,  G11B7/09 ,  G11B7/125 ,  G11B7/24 ,  G11B7/24085 ,  G11B11/105 ,  G11B19/02 ,  G11B3/78

    CPC分类号： G11B7/0045 ,  G11B11/10528 ,  G11B11/10578 ,  G11B11/10595 ,  G11B19/02 ,  G11B7/0938 ,  G11B7/126 ,  G11B7/24 ,  G11B7/24085

    摘要： An optical recording element comprising a recording medium which includes an information recording area formed at every unit in a non-continuous condition, the recording medium further including sample pits disposed at intervals of a fixed distance for providing basic information about the locations of the recording units in same track. Each sample pit comprises a plurality of pits disposed next to the sequence of the recording units so that the spacing between the pits differs from the spacing between the recording units. At least one of the plurality of pits is a long-sized inclined pit which is inclined at an angle in the range of 6.degree. to 80.degree. to a recording track. A driving system for driving the optical recording element for recording information in the non-continuous recording area or erasing information stored therein with a light beam the output of which is varied as required and checking whether said recording or erasing has been correctly performed, within a very short time in which the light beam passes through the non-continuous recording area. By using the optical recording element in combination with its driving system, the processing speed for reducing, erasing and verifying these functions can be greatly improved and the irradiating position of the light beam at every recording unit can be correctly controlled.

    摘要翻译： 一种光记录元件，包括记录介质，该记录介质包括在非连续状态下在每个单元处形成的信息记录区域，所述记录介质还包括以固定距离间隔设置的样品坑，以提供关于记录单元的位置的基本信息 在同一轨道。 每个采样坑包括靠近记录单元序列设置的多个凹坑，使得凹坑之间的间隔与记录单元之间的间隔不同。 多个凹坑中的至少一个是相对于记录轨道以6°至80°的角度倾斜的长尺寸倾斜凹坑。 一种驱动系统，用于驱动用于在非连续记录区域中记录信息的光学记录元件，或者用存储在其中的光束擦除信息，该光束的输出根据需要变化，并且检查是否正确地执行了所述记录或擦除 光束通过非连续记录区域的非常短的时间。 通过与其驱动系统结合使用光学记录元件，可以大大提高用于减少，擦除和验证这些功能的处理速度，并且可以正确地控制每个记录单元处的光束的照射位置。

    Magneto-optical recording medium having a signal reproducing region of the reproducing layer larger than the record bit in the recording layer
    9.
    发明授权
    Magneto-optical recording medium having a signal reproducing region of the reproducing layer larger than the record bit in the recording layer 失效
    磁光记录介质具有比记录层中的记录位大的再现层的信号再现区域

    公开(公告)号：US5982715A

    公开(公告)日：1999-11-09

    申请号：US116328

    申请日：1998-07-15

    申请人： Go Mori ,  Naoyasu Iketani ,  Michinobu Mieda ,  Ippei Suzuki ,  Junji Hirokane ,  Akira Takahashi

    发明人： Go Mori ,  Naoyasu Iketani ,  Michinobu Mieda ,  Ippei Suzuki ,  Junji Hirokane ,  Akira Takahashi

    IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B11/00

    CPC分类号： G11B11/10584 ,  G11B11/10593 ,  G11B11/10515

    摘要： A magneto-optical recording medium with a reproducing layer that exhibits in-plane magnetization at room temperature and that comes to exhibit perpendicular magnetization as temperature rises. The second shielding layer is used to block the magnetization of record bits other than a record bit to be reproduced from being copied on a signal reproducing area in the reproducing layer. Consequently, even in the case of high-density record bits in the recording layer, only the magnetization of the record bit to be reproduced is copied on the reproducing layer. Therefore, the application of the magneto-optical recording medium makes it possible to produce superior reproducing signals even in the case where the records bits with high density are formed on the recording layer.

    摘要翻译： 一种具有再现层的磁光记录介质，其在室温下表现出平面内的磁化，并且随着温度升高而呈现垂直磁化强度。 第二屏蔽层用于阻止除被再现的记录位之外的记录位的磁化被复制在再现层中的信号再现区上。 因此，即使在记录层中的高密度记录位的情况下，只有将再现的记录位的磁化复制在再现层上。 因此，即使在记录层上形成具有高密度的记录位的情况下，也可以应用磁光记录介质来产生优良的再现信号。