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80 条记录 (耗时 0.028 秒)

    Optical memory having narrowed track pitch
    22.
    发明授权
    Optical memory having narrowed track pitch 失效
    具有窄轨道间距的光学存储器

    公开(公告)号：US5586109A

    公开(公告)日：1996-12-17

    申请号：US354457

    申请日：1994-12-12

    申请人： Tetsuya Inui ,  Akira Takahashi ,  Kenji Ohta ,  Michinobu Mieda ,  Yoshiteru Murakami

    发明人： Tetsuya Inui ,  Akira Takahashi ,  Kenji Ohta ,  Michinobu Mieda ,  Yoshiteru Murakami

    IPC分类号： G11B7/0045 ,  G11B7/007 ,  G11B7/09 ,  G11B7/24 ,  G11B7/26 ,  G11B11/105 ,  G11B3/70

    CPC分类号： G11B7/261 ,  G11B11/10582 ,  G11B7/24 ,  G11B7/24079 ,  G11B7/26 ,  G11B7/00454 ,  G11B7/007 ,  G11B7/0938

    摘要： A transparent substrate of an optical memory is produced by injection molding using a stamper. Grooves and lands are alternately arranged on the optical memory, for tracking of light converged on the optical memory. The groove width is set in the range of 0.3 .mu.m to 0.4 .mu.m and the groove depth is set in the rage of 80 nm to 100 nm. A decrease in the width of a land at each edge is restrained to 0.2 .mu.m in maximum. With such dimensions, even when the track pitch is set to about 1.4 .mu.m, it is possible to obtain a track crossing signal with intensity sufficient for performing an access operation to a target track. Moreover, since the dimensions bring about an improved reflectance at a land, the optical memory achieves an improved C/N and recording density.

    摘要翻译： 通过使用压模的注射成型制造光学存储器的透明基板。 沟槽和焊盘交替布置在光学存储器上，用于跟踪会聚在光学存储器上的光。 槽宽度设定在0.3μm〜0.4μm的范围内，槽深度设定在80nm〜100nm的范围内。 每个边缘的陆地宽度减小最大限制在0.2亩。 利用这样的尺寸，即使当轨道间距设置为大约1.4μm时，也可以获得具有足以对目标轨道进行访问操作的强度的轨迹交叉信号。 此外，由于尺寸在陆地上产生改进的反射率，所以光学存储器实现了改进的C / N和记录密度。

    Optical memory having narrowed track pitch
    24.
    发明授权
    Optical memory having narrowed track pitch 失效
    具有窄轨道间距的光学存储器

    公开(公告)号：US5676854A

    公开(公告)日：1997-10-14

    申请号：US688852

    申请日：1996-08-01

    申请人： Tetsuya Inui ,  Akira Takahashi ,  Kenji Ohta ,  Michinobu Mieda ,  Yoshiteru Murakami

    发明人： Tetsuya Inui ,  Akira Takahashi ,  Kenji Ohta ,  Michinobu Mieda ,  Yoshiteru Murakami

    IPC分类号： G11B7/0045 ,  G11B7/007 ,  G11B7/09 ,  G11B7/24 ,  G11B7/26 ,  G11B11/105

    CPC分类号： G11B7/261 ,  G11B11/10582 ,  G11B7/24 ,  G11B7/24079 ,  G11B7/26 ,  G11B7/00454 ,  G11B7/007 ,  G11B7/0938

    摘要： A transparent substrate of an optical memory is produced by injection molding using a stamper. Grooves and lands are alternately arranged on the optical memory, for tracking of light converged on the optical memory. The groove width is set in the range of 0.3 .mu.m to 0.4 .mu.m and the groove depth is set in the rage of 80 nm to 100 nm. A decrease in the width of a land at each edge is restrained to 0.2 .mu.m in maximum. With such dimensions, even when the track pitch is set to about 1.4 .mu.m, it is possible to obtain a track crossing signal with intensity sufficient for performing an access operation to a target track. Moreover, since the dimensions bring about an improved reflectance at a land, the optical memory achieves an improved C/N and recording density.

    摘要翻译： 通过使用压模的注射成型制造光学存储器的透明基板。 槽和焊盘交替布置在光学存储器上，用于跟踪会聚在光学存储器上的光。 槽宽度设定在0.3μm〜0.4μm的范围内，槽深度设定在80nm〜100nm的范围内。 每个边缘的陆地宽度减小最大限制在0.2亩。 利用这样的尺寸，即使当轨道间距设置为大约1.4μm时，也可以获得具有足以对目标轨道进行访问操作的强度的轨迹交叉信号。 此外，由于尺寸在陆地上产生改进的反射率，所以光学存储器实现了改进的C / N和记录密度。

    Magneto-optical recording medium and method of recording and reproducing using the same
    27.
    发明授权
    Magneto-optical recording medium and method of recording and reproducing using the same 失效
    磁光记录介质及使用其的记录和再现方法

    公开(公告)号：US5683803A

    公开(公告)日：1997-11-04

    申请号：US433088

    申请日：1995-05-03

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

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

    IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B5/66 ,  B32B5/16

    CPC分类号： G11B11/10586 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/10523 ,  Y10S428/90 ,  Y10T428/26 ,  Y10T428/265

    摘要： A magneto-optical recording medium includes a first magnetic layer and a second magnetic layer being laminated. When information is to be recorded on the first magnetic layer, first, a magnetization direction in the second magnetic layer is arranged in one direction with an application of an initialization magnetic field. Then, an intensity modulated light beam is projected while applying thereto a recording magnetic field so as to change the magnetization direction in the second magnetic layer. Thereafter, the magnetization direction in the second magnetic layer is copied to the first magnetic layer, thereby recording information. The first magnetic layer has a magnetization in an intermediate direction between a perpendicular direction and an in-plane direction at room temperature, while has a perpendicular magnetization at above a predetermined temperature. Therefore, a smaller exchange coupling force is exerted from the first magnetic layer to the second magnetic layer at room temperature, thereby enabling a rewriting information with a smaller initialization magnetic field compared with the conventional method, thereby achieving a reduction in size of the apparatus and power conservation.

    摘要翻译： 磁光记录介质包括层叠的第一磁性层和第二磁性层。 当要在第一磁性层上记录信息时，首先，通过施加初始化磁场，将第二磁性层中的磁化方向布置在一个方向上。 然后，施加强度调制光束，同时向其施加记录磁场，以改变第二磁性层中的磁化方向。 此后，将第二磁性层中的磁化方向复制到第一磁性层，从而记录信息。 第一磁性层在室温下具有在垂直方向和面内方向之间的中间方向上的磁化强度，同时具有高于预定温度的垂直磁化强度。 因此，与常规方法相比，在室温下从第一磁性层向第二磁性层施加较小的交换耦合力，从而能够实现与常规方法相比具有较小初始化磁场的重写信息，从而实现装置的尺寸减小 省电。

    Optical recording element and driving system
    28.
    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 memory element
    29.
    发明授权
    Magneto-optical memory element 失效
    磁光存储元件

    公开(公告)号：US5414652A

    公开(公告)日：1995-05-09

    申请号：US293720

    申请日：1994-08-22

    申请人： Michinobu Mieda ,  Hiroyuki Katayama ,  Akira Takahashi ,  Kenji Ohta

    发明人： Michinobu Mieda ,  Hiroyuki Katayama ,  Akira Takahashi ,  Kenji Ohta

    IPC分类号： G11B7/007 ,  G11B11/105 ,  G11C13/06

    CPC分类号： G11B7/24079 ,  G11B11/10584 ,  G11B7/00718

    摘要： A magneto-optical memory element including: grooves, formed on at least one surface of a transparent substrate, for guiding a light beam; a magneto-optical recording layer formed on the surface of said transparent substrate on which the grooves are formed, wherein a width of each groove and a width of each land formed between the grooves are substantially equal, information is recorded on and reproduced from tracks on the grooves and the lands, and a groove depth d (track depth) is arranged such that 0.13.times..lambda./n.ltoreq.d.ltoreq. 0.18.times. .lambda./n, where .lambda. is a wavelength of the light beam and n is a refraction index of the transparent substrate. Assuming that a diameter of the light beam at a portion where a light intensity of the light beam becomes 1/e.sup.2 of a light intensity of the center of the light beam is L, a track pitch p is arranged such that 0.6.ltoreq.L/p.ltoreq.1.2. Therefore, even when the track density is increased, i.e., the width of the groove portion and the width of the land portion are reduced, a satisfactory signal quality with low level of crosstalk is obtained. Accordingly, such a magneto-optical disk achieves a high recording density.

    摘要翻译： 一种磁光存储元件，包括：形成在透明基板的至少一个表面上的用于引导光束的凹槽; 形成在所述透明基板的形成有凹槽的表面上的磁光记录层，其中每个凹槽的宽度和在凹槽之间形成的每个焊盘的宽度基本上相等，信息被记录在磁道上并从其上再现 凹槽和焊盘以及凹槽深度d（磁道深度）被布置成使得0.13xλ/n≤d≤0.18xλ/ n，其中λ是光束的波长，n是 透明基板的折射率。 假设在光束的光强度变为光束中心的光强度的1 / e2的部分处的光束的直径为L，则轨道间距p被布置成使得0.6≤L /p