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81. 发明授权

US5659537A Magneto-optical recording medium and method of reproducing from same 失效
标题翻译：磁光记录介质及其再现方法
公开(公告)号：US5659537A
公开(公告)日：1997-08-19
申请号：US459338
申请日：1995-06-02
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 , G11B7/00
CPC分类号： G11B11/10593 , G11B11/10515 , G11B11/10584
摘要： A recording layer including a recording magnetic domain for recording thereon information is formed. A reproducing layer for reproducing information by projecting thereto a light beam is formed on the recording layer. A non-magnetic intermediate layer for intercepting a magnetic exchange coupling force exerted between the recording layer and the reproducing layer is formed between the recording layer and the reproducing layer. The reproducing layer is arranged such that the width of the stable magnetic domain on the reproducing layer at room temperature is larger than the width of the recording magnetic domain in the recording layer. At a reproducing temperature by the light beam, the width of the stable magnetic domain becomes smaller than the width of the recording magnetic domain, and the information is copied by the leakage magnetic flux of the recording magnetic domain. Depending on whether or not the information transferred to the reproducing layer is reproduced, the effects from other magnetic domain adjacent to the magnetic domain to be reproduced from the reproducing layer can be prevented, thereby enabling a high density recording of information on the recording layer.
摘要翻译：形成包括用于在其上记录信息的记录磁畴的记录层。在记录层上形成用于通过向其投射光来再现信息的再现层。在记录层和再现层之间形成用于截取在记录层和再现层之间施加的磁交换耦合力的非磁性中间层。再现层被布置成使得在室温下再现层上的稳定磁畴的宽度大于记录层中记录磁畴的宽度。在光束的再现温度下，稳定磁畴的宽度变得小于记录磁畴的宽度，并且通过记录磁畴的泄漏磁通来复制信息。根据传送到再现层的信息是否被再现，可以防止从再现层再现的与磁畴相邻的其它磁畴的影响，从而能够在记录层上高密度地记录信息。

82. 发明授权

US06278668B1 Magneto-optical storage media 有权
标题翻译：磁光存储介质
公开(公告)号：US06278668B1
公开(公告)日：2001-08-21
申请号：US09442794
申请日：1999-11-18
申请人： Junji Hirokane , Noboru Iwata , Akira Takahashi
发明人： Junji Hirokane , Noboru Iwata , Akira Takahashi
IPC分类号： G11B1100
CPC分类号： G11B11/10584 , G11B11/10515 , G11B11/10593
摘要： A magneto-optical storage medium includes: a reproduction layer exhibiting an in-plane magnetization state at room temperature and changing to a perpendicular magnetization state at a transition temperature Tp1; a supplementary reproduction layer exhibiting an in-plane magnetization state at room temperature and changing to a perpendicular magnetization state at a transition temperature Tp2; a non-magnetic intermediate layer; and a storage layer made of a perpendicular magnetization film, the layers being deposited in this order, the magneto-optical storage medium being arranged so as to satisfy: Tp1
摘要翻译：磁光存储介质包括：在室温下呈平面内的磁化状态并在转变温度Tp1处变为垂直磁化状态的再现层;在室温下呈现面内磁化状态的补充再生层到转变温度Tp2的垂直磁化状态;非磁性中间层; 和由垂直磁化膜制成的存储层，这些层按此顺序沉积，磁光存储介质被布置为满足：这种布置使得磁光存储介质能够放大存储在存储层中的磁信息并将其复制到再现层，并且其信号的周期等于或低于从存储层再现的光的衍射极限，而不减小振幅。

83. 发明授权

US06178143B1 Magneto-optical recording medium for achieving super resolution reproduction of high resolution recorded information 有权
标题翻译：用于实现高分辨率记录信息的超分辨率再现的磁光记录介质
公开(公告)号：US06178143B1
公开(公告)日：2001-01-23
申请号：US09258180
申请日：1999-02-25
申请人： Junji Hirokane , Yoshiteru Murakami , Akira Takahashi
发明人： Junji Hirokane , Yoshiteru Murakami , Akira Takahashi
IPC分类号： G11B1100
CPC分类号： G11B11/10515 , G11B11/10584 , G11B11/10586
摘要： A magneto-optical recording medium has a recording layer made of a perpendicular magnetization film, and a readout layer which is in an in-plane magnetization state at room temperature and changes into a perpendicular magnetization state with a rise in temperature. When the magneto-optical recording medium is irradiated with a light beam, the readout layer separates into three regions: a region in an in-plane magnetization state, a region in a perpendicular magnetization state, and a region having a temperature not lower than the Curie temperature thereof. Only the region in the perpendicular magnetization state allows copying of the magnetization of the recording layer. Therefore, even when the diameter and intervals of recording bits on the recording layer are very small, it is possible to reproduce a target recording bit separately from a recording bit adjacent to the target recording bit.
摘要翻译：磁光记录介质具有由垂直磁化膜制成的记录层和在室温下处于平面内磁化状态并随温度升高而变为垂直磁化状态的读出层。当磁光记录介质被光束照射时，读出层分为三个区域：面内磁化状态的区域，垂直磁化状态的区域和温度不低于居里温度。只有垂直磁化状态的区域才允许复制记录层的磁化。因此，即使当记录层上的记录位的直径和间隔非常小时，也可以与目标记录位相邻的记录位分开再现目标记录位。

84. 发明授权

US5985436A Magneto-optical recording medium, magneto-optical recording method, and magneto-optical recording apparatus 失效
标题翻译：磁光记录介质，磁光记录方法和磁光记录装置
公开(公告)号：US5985436A
公开(公告)日：1999-11-16
申请号：US935395
申请日：1997-09-23
申请人： Junji Hirokane , Yoshiteru Murakami , Akira Takahashi
发明人： Junji Hirokane , Yoshiteru Murakami , Akira Takahashi
IPC分类号： G11B11/10 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10508 , G11B11/10591 , G11B11/10593 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： A magneto-optical recording medium including at least a recording layer, and an auxiliary recording layer which achieves magnetostatic coupling with the recording layer. The auxiliary recording layer is in an in-plane magnetization state at temperatures lower than a recording temperature, and in a perpendicular magnetization state at temperatures not lower than the recording temperature. It is therefore possible to achieve a decrease in a recording magnetic field.
摘要翻译：至少包括记录层的磁光记录介质和与记录层实现静磁耦合的辅助记录层。辅助记录层在低于记录温度的温度下处于平面内磁化状态，并且在不低于记录温度的温度下处于垂直磁化状态。因此，可以实现记录磁场的减小。

85. 发明授权

US5933411A Optical recording medium having a wobbling section for recording address information and methods of recording and reproduction using same 失效
标题翻译：具有用于记录地址信息的摆动部分和使用其的记录和再现方法的光学记录介质
公开(公告)号：US5933411A
公开(公告)日：1999-08-03
申请号：US890401
申请日：1997-07-09
申请人： Tetsuya Inui , Hideaki Sato , Junichiro Nakayama , Naoyasu Iketani , Michinobu Mieda , Yoshiteru Murakami , Junji Hirokane , Akira Takahashi
发明人： Tetsuya Inui , Hideaki Sato , Junichiro Nakayama , Naoyasu Iketani , Michinobu Mieda , Yoshiteru Murakami , Junji Hirokane , Akira Takahashi
IPC分类号： G11B7/005 , G11B7/007 , G11B7/09 , G11B7/24 , G11B7/26 , G11B11/105
CPC分类号： G11B7/005 , G11B7/00718 , G11B7/00745 , G11B7/0901 , G11B7/261 , G11B11/10578 , G11B11/10582 , G11B7/0938 , G11B7/24
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。由于以这样提供的摆动形式为凹凸形式，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，不会发生重放信息信号中的摆动频率分量的混合，扇区方法可应用于光盘，并且可以获得高质量的信息信号。

86. 发明授权

US5825723A Magneto-optical recording medium having a reproducing layer with different magnetization directions in different temperature ranges 失效
标题翻译：具有在不同温度范围内具有不同磁化方向的再现层的磁光记录介质
公开(公告)号：US5825723A
公开(公告)日：1998-10-20
申请号：US685534
申请日：1996-07-24
申请人： Junji Hirokane , Junichiro Nakayama , Akira Takahashi
发明人： Junji Hirokane , Junichiro Nakayama , Akira Takahashi
IPC分类号： G11B11/10 , G11B11/105 , G11B11/00
CPC分类号： G11B11/10586
摘要： A non-magnetic intermediate layer for intercepting magnetic exchange interaction is provided between a recording layer and a reproducing layer which are composed of a magnetic thin film with perpendicular magnetization. At this time, the reproducing layer is formed so that when an external magnetic field is applied thereto in reproducing information, its magnetization direction is arranged in the direction of the external magnetic field in a first temperature range, and when a light beam for reproduction is projected thereto and the reproducing layer is in a second temperature, the magnetization direction is arranged in the direction of a leakage magnetic flux generated from the recording layer, and is again arranged in the direction of the external magnetic field in a third temperature range. As a result, a rise and a fall of a reproducing signal detected from the reproducing layer can be made sharp, thereby achieving recording and reproducing at high density.
摘要翻译：在由具有垂直磁化的磁性薄膜组成的记录层和再现层之间提供用于截取磁交换相互作用的非磁性中间层。此时，再现层形成为当再现信息中施加外部磁场时，其磁化方向在第一温度范围内沿外部磁场的方向排列，并且当用于再现的光束为投影到其上并且再现层处于第二温度，磁化方向被布置在从记录层产生的泄漏磁通的方向上，并且在第三温度范围内再次设置在外部磁场的方向上。结果，可以使从再现层检测到的再现信号的上升和下降变得尖锐，从而实现高密度的记录和再现。

87. 发明授权

US5768218A Magneto-optical recording medium having a plurality of magnetic layers 失效
标题翻译：具有多个磁性层的磁光记录介质
公开(公告)号：US5768218A
公开(公告)日：1998-06-16
申请号：US803274
申请日：1997-02-20
申请人： Junichiro Nakayama , Yoshiteru Murakami , Junji Hirokane , Akira Takahashi
发明人： Junichiro Nakayama , Yoshiteru Murakami , Junji Hirokane , Akira Takahashi
IPC分类号： G11B11/10 , G11B11/105 , G11B11/00
CPC分类号： G11B11/10584 , G11B11/10586 , G11B11/10506 , G11B11/10515 , G11B11/10521
摘要： A magneto-optical recording medium has a transparent substrate, a first magnetic layer, first intermediate layer, a second magnetic layer, and a third magnetic layer provided in this order. The first magnetic layer has an in-plane magnetization at room temperature, while a transition from the in-plane magnetization to a perpendicular magnetization occurs to the first magnetic layer with a temperature rise. The first intermediate layer is made of a non-magnetic substance. The second magnetic layer is a film having a perpendicular magnetization. The third magnetic layer is a film having a perpendicular magnetization, has a coercive force smaller than that of the second magnetic layer at room temperature, and has a Curie temperature higher than that of the second magnetic layer. The light intensity modulation overwriting method is applicable to the magneto-optical recording medium thus arranged, superior reproduction signal characteristics can be obtained with respect to this magneto-optical recording medium, and reproduction can be carried out with respect to the recording medium even though it has recording bits whose each diameter is smaller than that of a light beam. Thus it is possible to provide the magneto-optical recording medium suitable for high density recording.
摘要翻译：磁光记录介质具有依次设置的透明基板，第一磁性层，第一中间层，第二磁性层和第三磁性层。第一磁性层在室温下具有平面内的磁化强度，而从第一磁性层的温度上升发生从面内磁化向垂直磁化的转变。第一中间层由非磁性物质制成。第二磁性层是具有垂直磁化强度的膜。第三磁性层是具有垂直磁化的膜，在室温下的矫顽力小于第二磁性层的矫顽力，并且居里温度高于第二磁性层的居里温度。光强度调制重写方法适用于如此布置的磁光记录介质，可以获得相对于该磁光记录介质的优良再现信号特性，并且可以相对于记录介质进行再现，即使它具有每个直径小于光束直径的记录位。因此，可以提供适合于高密度记录的磁光记录介质。

88. 发明授权

US5757734A Magneto-optical recording medium and method for reproducing from same 失效
标题翻译：磁光记录介质及其再现方法
公开(公告)号：US5757734A
公开(公告)日：1998-05-26
申请号：US668429
申请日：1996-06-17
申请人： Junsaku Nakajima , Junji Hirokane , Yoshiteru Murakami , Akira Takahashi
发明人： Junsaku Nakajima , Junji Hirokane , Yoshiteru Murakami , Akira Takahashi
IPC分类号： G11B11/10 , G11B11/105 , G11B11/00 , G11B5/66
CPC分类号： G11B11/10586 , G11B11/10515
摘要： A magneto-optical recording medium is composed of a reproducing layer, a recording layer, and an initializing layer, which are laminated in this order. The reproducing layer is provided so that a light beam is projected thereon so as to reproduce information. The recording layer is provided so that information is recorded therein and the information is copied to the reproducing layer at a readout temperature. The initializing layer is provided so that the reproducing layer is initialized at room temperature. Non-magnetic layers are provided between the reproducing layer and the recording layer and between the recording layer and the initializing layer, respectively, so that such two layers are not exchange-coupled each other. The recording layer has a compensation temperature of room temperature, while the initializing layer has a compensation temperature of the readout temperature, which is achieved by temperature rise caused by the projection of the light beam. With such an arrangement, an external magnetic field for initializing the reproducing layer and an external magnetic field for reproduction-use can be omitted, thereby preventing a recording device from becoming large in size, as well as enhancing the recording density of the recording layer.
摘要翻译：磁光记录介质由再现层，记录层和初始化层组成，按顺序层叠。提供再现层，使得光束在其上投影以再现信息。提供记录层，使得信息被记录在其中，并且在读出温度下将信息复制到再现层。提供初始化层，使得再现层在室温下被初始化。在再现层和记录层之间以及记录层和初始化层之间分别设置非磁性层，使得这两层不相互交换。记录层具有室温的补偿温度，而初始化层具有通过由光束的投影引起的温度上升而实现的读出温度的补偿温度。通过这样的布置，可以省略用于初始化再现层的外部磁场和用于再现用途的外部磁场，从而防止记录装置尺寸变大，以及提高记录层的记录密度。

89. 发明授权

US6031816A Optical recording medium, method for manufacturing the same, and optical information recording and reproducing device used with respect to the same 有权
标题翻译：光记录介质及其制造方法以及与此相关的光信息记录再现装置
公开(公告)号：US6031816A
公开(公告)日：2000-02-29
申请号：US330495
申请日：1999-06-11
申请人： Tetsuya Inui , Hideaki Sato , Junichiro Nakayama , Naoyasu Iketani , Michinobu Mieda , Yoshiteru Murakami , Junji Hirokane , Akira Takahashi
发明人： Tetsuya Inui , Hideaki Sato , Junichiro Nakayama , Naoyasu Iketani , Michinobu Mieda , Yoshiteru Murakami , Junji Hirokane , Akira Takahashi
IPC分类号： G11B7/005 , G11B7/007 , G11B7/09 , G11B7/24 , G11B7/26 , G11B11/105
CPC分类号： G11B7/005 , G11B7/00718 , G11B7/00745 , G11B7/0901 , G11B7/261 , G11B11/10578 , G11B11/10582 , G11B7/0938 , G11B7/24
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。由于以这样提供的摆动形式为凹凸形式，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，不会发生重放信息信号中的摆动频率分量的混合，扇区方法可应用于光盘，并且可以获得高质量的信息信号。

90. 发明授权

US5982715A Magneto-optical recording medium having a signal reproducing region of the reproducing layer larger than the record bit in the recording layer 失效
标题翻译：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。

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