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86 条记录 (耗时 0.016 秒)

    Sectored arrangement of wobble sections on an optical disk
    32.
    发明公开
    Sectored arrangement of wobble sections on an optical disk 失效
    在Sektoren angeordnete Wobble-Bereiche auf einer optischen Disk

    公开(公告)号：EP0818778A3

    公开(公告)日：1999-12-15

    申请号：EP97111464.0

    申请日：1997-07-07

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Inui, Tetsuya ,  Sato, Hideaki ,  Nakayama, Junichiro ,  Iketani, Naoyasu ,  Mieda, Michinobu ,  Murakami, Yoshiteru ,  Hirokane, Junji ,  Takahashi, Akira

    IPC分类号： G11B7/09

    CPC分类号： G11B7/005 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/24 ,  G11B7/261 ,  G11B11/10578 ,  G11B11/10582

    摘要： An optical disk has address recording sections each of which has a wobbled part of one of side walls of a groove. Each address recording section is formed by providing convexes of a groove in an adjacent land so as to widen the groove. With the wobbles thus provided in a concavo-convex form, address information is recorded. Besides, the address recording sections thus provided in the grooves are linearly disposed in radial directions of the optical disk. By thus arranging the optical disk on whose grooves and/or lands information is recorded, mixing of wobble frequency components in reproduced information signals does not occur, the sector method is applicable to the optical disk, and information signals of high quality can be obtained.

    摘要翻译： 光盘具有地址记录部分，每个地址记录部分具有凹槽的一个侧壁的摆动部分。 每个地址记录部分通过在相邻的凸台中提供凹槽的凸起来形成，以便加宽凹槽。 由于摆动形式呈凹凸形状，所以记录地址信息。 此外，这样设置在凹槽中的地址记录部分在光盘的径向上线性地设置。 通过这样布置记录有槽和/或焊盘信息的光盘，就不会在重放的信息信号中混合摆动频率分量，扇形方法可应用于光盘，并且可以获得高质量的信息信号。

    Magneto-optical memory medium and reproducing method thereof
    33.
    发明公开
    Magneto-optical memory medium and reproducing method thereof 失效
    Magneto-optisches Speichermedium unddazugehörigesWiedergabeverfahren

    公开(公告)号：EP0863504A2

    公开(公告)日：1998-09-09

    申请号：EP98104044.7

    申请日：1998-03-06

    申请人： Sharp Kabushiki Kaisha

    发明人： Takahashi, Akira ,  Mieda, Michinobu ,  Iketani, Naoyasu ,  Mori, Go ,  Nakajima, Junsaku ,  Murakami, Yoshiteru ,  Hirokane, Junji

    IPC分类号： G11B11/10

    CPC分类号： G11B11/10584 ,  G11B11/10515 ,  G11B11/10586 ,  G11B11/10593

    摘要： A magneto-optical memory medium according to the present invention comprises a reproducing layer, which has in-plane magnetization at room temperature and perpendicular magnetization when heated to above a predetermined temperature by a reproducing light beam; a recording layer, which is magnetostatically coupled to the reproducing layer; and an in-plane magnetized layer, provided adjacent to the recording layer, which has a Curie temperature at the above-mentioned predetermined temperature. In this medium, at temperatures below the predetermined temperature, signals recorded at high density in the recording layer are masked, and the above-mentioned magnetostatic coupling is suppressed, by magnetic masking by the in-plane magnetized layer. At temperatures above the predetermined temperature, however, within a domain forming part of the in-plane magnetized layer, the recording layer and the reproducing layer are magnetostatically coupled, and a recording bit of the recording layer is copied and expanded to a magnetic domain in the reproducing layer. Accordingly, with this medium, by reproducing from an expanded magnetic domain of the reproducing layer, even information from recording bits recorded at high density can be reproduced with high signal quality.

    摘要翻译： 根据本发明的磁光存储介质包括再现层，其在室温下具有面内磁化并且通过再现光束被加热到高于预定温度时的垂直磁化; 记录层，其被静磁耦合到再现层; 以及与记录层相邻的面内磁化层，居里温度在上述规定温度。 在该介质中，在低于预定温度的温度下，记录层中以高密度记录的信号被掩蔽，并且通过面内磁化层的磁屏蔽来抑制上述静磁耦合。 然而，在高于预定温度的温度下，在形成面内磁化层的一部分的区域内，磁静电耦合记录层和再现层，并且将记录层的记录位复制并扩展到磁畴 再现层。 因此，利用该介质，通过从再现层的扩展磁畴再现，可以以高信号质量再现以高密度记录的记录位的信息。

    Sectored arrangement of wobble sections on an optical disk
    35.
    发明公开
    Sectored arrangement of wobble sections on an optical disk 失效
    光盘具有分散的摆动部，制造方法，以及用于记录和再现的方法

    公开(公告)号：EP0818778A2

    公开(公告)日：1998-01-14

    申请号：EP97111464.0

    申请日：1997-07-07

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Inui, Tetsuya ,  Sato, Hideaki ,  Nakayama, Junichiro ,  Iketani, Naoyasu ,  Mieda, Michinobu ,  Murakami, Yoshiteru ,  Hirokane, Junji ,  Takahashi, Akira

    IPC分类号： G11B7/09

    CPC分类号： G11B7/005 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/24 ,  G11B7/261 ,  G11B11/10578 ,  G11B11/10582

    摘要： An optical disk has address recording sections each of which has a wobbled part of one of side walls of a groove. Each address recording section is formed by providing convexes of a groove in an adjacent land so as to widen the groove. With the wobbles thus provided in a concavo-convex form, address information is recorded. Besides, the address recording sections thus provided in the grooves are linearly disposed in radial directions of the optical disk. By thus arranging the optical disk on whose grooves and/or lands information is recorded, mixing of wobble frequency components in reproduced information signals does not occur, the sector method is applicable to the optical disk, and information signals of high quality can be obtained.

    摘要翻译： 一种光盘具有地址记录部的每一个具有一个槽的侧壁中的一个的摆动部分。 每个地址记录部是通过在相邻的国家提供一个槽的凸部中，以扩大该槽形成。 在一个凹凸形状这样提供的摆动，地址信息被记录。 此外，在槽部这样提供的地址记录部在光盘的半径方向呈直线状地设置。 通过这样布置在谁的凹槽和/或连接盘信息被记录在光盘中，在再生信息信号的摆动频率分量的混合不会发生，扇区方法适用于光盘，和高质量的信息信号可以被得到。

    Magneto-optical recording medium and method for reproducing from the magneto-optical recording medium
    37.
    发明公开
    Magneto-optical recording medium and method for reproducing from the magneto-optical recording medium 失效
    磁光记录介质和从磁光记录介质再现的方法。

    公开(公告)号：EP0608643A3

    公开(公告)日：1996-08-28

    申请号：EP93310643.7

    申请日：1993-12-31

    申请人： SHARP KABUSHIKI KAISHA

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

    IPC分类号： G11B11/10

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

    摘要： A magneto-optical recording medium and a method for reproducing from the magneto-optical recording medium are disclosed. The magneto-optical recording medium includes a base (1), a readout layer (3) formed on the base, which has perpendicular magnetization in a temperature range between room temperature and Curie temperature; a transfer layer (4) formed on the readout layer, which is predominant in in-plane magnetization at room temperature, and in which a transition occurs from in-plane magnetization to perpendicular magnetization at a predetermined temperature above room temperature; and a recording layer (5) formed on the transfer layer, which has perpendicular magnetization in a temperature range between room temperature and Curie temperature. According to the present invention, a recording bit with a diameter smaller than that of a spot of a light beam formed on the readout layer can be reproduced. Moreover, since noise can be reduced, an improvement in a signal quality can be achieved.

    摘要翻译： 公开了一种磁光记录介质和从磁光记录介质再现的方法。 磁光记录介质包括基底，形成在基底上的读出层，其在室温和居里温度之间的温度范围内具有垂直磁化强度; 形成在读出层上的转移层，其在室温下在面内磁化中占优势，并且其中在预定温度高于室温的情况下从面内磁化转变为垂直磁化; 以及形成在转印层上的记录层，其在室温和居里温度之间的温度范围内具有垂直磁化强度。 根据本发明，可以再现直径小于在读出层上形成的光束的点的直径的记录位。 此外，由于可以降低噪声，可以实现信号质量的提高。

    Optical recording element and driving system
    38.
    发明授权
    Optical recording element and driving system 失效
    光学记录介质和驱动系统。

    公开(公告)号：EP0356201B1

    公开(公告)日：1994-11-23

    申请号：EP89308499.6

    申请日：1989-08-22

    申请人： SHARP KABUSHIKI KAISHA

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

    IPC分类号： G11B7/013 ,  G11B7/24 ,  G11B11/10 ,  G11B7/00 ,  G11B20/12

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

    摘要： An optical recording element (4) 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 (2) pits disposed at intervals of a fixed distance for providing basic information about the locations of the recording units in the 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 DEG to 80 DEG 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 can be greatly improved and the irradiating position of the light beam at every recording unit can be correctly controlled.

    Magneto-optical recording medium and method for reproducing from the magneto-optical recording medium
    39.
    发明公开
    Magneto-optical recording medium and method for reproducing from the magneto-optical recording medium 失效
    用于读取该磁 - 光记录介质的磁 - 光记录介质和方法。

    公开(公告)号：EP0608643A2

    公开(公告)日：1994-08-03

    申请号：EP93310643.7

    申请日：1993-12-31

    申请人： SHARP KABUSHIKI KAISHA

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

    IPC分类号： G11B11/10

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

    摘要： A magneto-optical recording medium and a method for reproducing from the magneto-optical recording medium are disclosed. The magneto-optical recording medium includes a base (1), a readout layer (3) formed on the base, which has perpendicular magnetization in a temperature range between room temperature and Curie temperature; a transfer layer (4) formed on the readout layer, which is predominant in in-plane magnetization at room temperature, and in which a transition occurs from in-plane magnetization to perpendicular magnetization at a predetermined temperature above room temperature; and a recording layer (5) formed on the transfer layer, which has perpendicular magnetization in a temperature range between room temperature and Curie temperature. According to the present invention, a recording bit with a diameter smaller than that of a spot of a light beam formed on the readout layer can be reproduced. Moreover, since noise can be reduced, an improvement in a signal quality can be achieved.

    摘要翻译： 一种磁光记录介质，并且用于从所述磁 - 光记录介质再现的方法是游离缺失盘。 磁 - 光记录介质包括基体，形成在所述基底，其具有在室温和居里温度之间的温度范围内垂直磁化上的读出层; 形成在读出层上的转印层，所有这些是主要的在平面内磁化在室温下，并且其中从所述的过渡发生在面内磁化向在预定的温度高于室温垂直磁化; 和记录层形成的转印层，其在室温和居里温度之间的温度范围内具有垂直磁化上。 。根据本发明，具有的直径小于形成在读出层上的光束的光点小的记录比特可以被再现。 更过，由于噪声可以在信号质量降低到改进可以实现的。