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31. 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。

32. 发明授权

US5402408A Magneto-optical recording method of overwriting without requiring an initialization magnet 失效
标题翻译：重写磁光记录方法，不需要初始化磁铁
公开(公告)号：US5402408A
公开(公告)日：1995-03-28
申请号：US964428
申请日：1992-10-21
申请人： Junji Hirokane , Hiroyuki Katayama , Junichiro Nakayama , Michinobu Mieda , Kenji Ohta
发明人： Junji Hirokane , Hiroyuki Katayama , Junichiro Nakayama , Michinobu Mieda , Kenji Ohta
IPC分类号： G11B11/105 , G11B11/10 , G11B7/24
CPC分类号： G11B11/10584 , G11B11/10506 , G11B11/10519 , G11B11/10586
摘要： A magneto-optical recording method for rewriting of information including the steps of projecting a light beam, whose intensity varies in response to information to be recorded, onto a magnetic thin film with perpendicular magnetization while an external magnetic field of a constant intensity is being applied thereto; and arranging the magnetization direction of an area irradiated with the light beam of the magnetic thin film with perpendicular magnetization in the direction of the external magnetic field when projecting the light beam of high intensity, while arranging it in the direction of demagnetizing field, opposite to the direction of the external magnetic field generated by magnetization in the vicinity of the irradiated area when projecting the light beam of low intensity, and a magneto-optical memory element provided with a base whereon the magnetic thin film with perpendicular magnetization and an in-plane magnetization film are formed. With the above arrangement, an overwriting operation can be carried out through light intensity modulation without requiring an initialization magnet.
摘要翻译：一种用于重写信息的磁光记录方法，包括以下步骤：将强度随着要记录的信息而变化的光束投射到具有恒定强度的外部磁场的垂直磁化的磁性薄膜上，到; 以及当投射高强度光束时，沿着外部磁场的方向，使磁性薄膜的光束照射的区域的磁化方向排列成与退磁场相反的方向当投射低强度光束时，在照射区域附近由磁化产生的外部磁场的方向以及设置有具有垂直磁化和平面内的磁性薄膜的基底的磁光存储元件形成磁化膜。通过上述配置，可以通过光强调制而不需要初始化磁体来进行重写操作。

33. 发明授权

US5347510A Method of manufacturing a master plate where its guide groove has an inclined angle 失效
标题翻译：制造其导向槽具有倾斜角的主板的方法
公开(公告)号：US5347510A
公开(公告)日：1994-09-13
申请号：US4266
申请日：1993-01-14
申请人： Junji Hirokane , Hiroyuki Katayama , Junichiro Nakayama , Michinobu Mieda , Kenji Ohta
发明人： Junji Hirokane , Hiroyuki Katayama , Junichiro Nakayama , Michinobu Mieda , Kenji Ohta
IPC分类号： G01Q80/00 , G11B7/007 , G11B7/24 , G11B7/26
CPC分类号： G11B7/24076 , G11B7/261
摘要： A master plate for manufacturing a stamper for injecting molding of an optical memory device has a substrate having a plurality of guiding grooves on a surface thereof with a predetermined interval. The respective edge portions of the guiding grooves are inclined with respect to the surface of the substrate at an angle not more than 30.degree.. According to a manufacturing method of the master plate, the post-baking process is carried out at a baking temperature of not less than 150.degree. C. and an etching gas containing O.sub.2 gas of 4 (SCCM) to 10 (SCCM) is used. Thus, even when the copying is carried out with respect to the substrate of the optical memory device according to the injection molding process wherein the stamper, which is manufactured based on the above-mentioned master plate, is used, the mold release of the stamper can be carried out without being caught by the substrate. Thus, it is possible to keep the respective shapes of the guiding grooves of the s tamper, thereby enabling of manufacturing the substrate of the optical memory device with high repeatability.
摘要翻译：用于制造用于注射成型光学存储器件的压模的母板具有在其表面上以预定间隔具有多个导向槽的衬底。引导槽的各个边缘部分相对于基板的表面以不大于30°的角度倾斜。根据主板的制造方法，后烘烤处理在不低于150℃的烘烤温度下进行，并且使用含有4（SCCM）至10（SCCM）的O 2气体的蚀刻气体。因此，即使在使用根据上述主板制造的压模的注射成型工艺相对于光学存储器件的基板进行复印时，压模的脱模可以在不被基材捕获的情况下进行。因此，可以保持篡改器的引导槽的各自的形状，从而能够以高重复性制造光学存储器件的基板。

34. 发明授权

US06463015B1 Method of reproducing information on a magneto-optical recording medium for achieving super resolution reproduction of high resolution recorded information 有权
标题翻译：在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上再现信息的方法
公开(公告)号：US06463015B1
公开(公告)日：2002-10-08
申请号：US09633914
申请日：2000-08-08
申请人： Junji Hirokane , Yoshiteru Murakami , Akira Takahashi
发明人： Junji Hirokane , Yoshiteru Murakami , Akira Takahashi
IPC分类号： G11B724
CPC分类号： G11B11/10515 , G11B11/10584 , G11B11/10586
摘要： A magneto-optical recording medium of the present invention 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：本发明的磁光记录介质具有由垂直磁化膜构成的记录层和在室温下处于面内磁化状态的读出层，随温度升高而变为垂直磁化状态。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。

35. 发明授权

US5955191A Magneto-optical recording medium and a reproducing method using such a medium 失效
标题翻译：磁光记录介质和使用这种介质的再现方法
公开(公告)号：US5955191A
公开(公告)日：1999-09-21
申请号：US898270
申请日：1997-07-22
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： G11B11/10593 , G11B11/10515 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： A super-resolution magneto-optical recording medium has a reproducing layer, an in-plane magnetization layer and a recording layer. The reproducing layer and the recording layer are magnetostatically coupled, and each of the layers is made of a rare-earth transition-metal alloy which has a greater transition-metal sublattice moment than the compensation composition, and exhibits perpendicular magnetization, if it exists alone. At a temperature not more than the Curie temperature, the in-plane magnetization layer is exchange-coupled with the reproducing layer so as to allow the reproducing layer to exhibit in-plane magnetization. Since the reproducing layer is allowed to exhibit in-plane magnetization by the in-plane magnetization layer, it is not necessary to use a material containing a greater rare-earth metal sublattice moment as the reproducing layer. Therefore, at portions in the in-plane magnetization layer having temperatures higher than the Curie temperature, the directions of the transition-metal sublattice moments of the reproducing layer and the recording layer are aligned in parallel with each other. Thus, the reproducing polarity of this medium becomes the same as the polarity of a magneto-optical recording medium without a reproducing layer, thereby allowing compatibility with each other.
摘要翻译：超分辨率磁光记录介质具有再现层，平面内磁化层和记录层。再现层和记录层是静磁耦合的，并且每个层由稀土过渡金属合金制成，其具有比补偿组合物更大的过渡金属亚晶格力矩，并且如果单独存在则呈现垂直磁化。在不高于居里温度的温度下，面内磁化层与再生层交换耦合，以使再现层呈现面内磁化。由于通过面内磁化层允许再现层表现出平面内的磁化，因此不需要使用含有较大稀土金属亚晶格力矩的材料作为再生层。因此，在具有高于居里温度的面内的磁化层的部分，再现层和记录层的过渡金属亚晶格矩的方向彼此平行排列。因此，该介质的再现极性与没有再现层的磁光记录介质的极性相同，从而允许彼此兼容。

36. 发明授权

US5926444A Magneto-optical recording medium for achieving super resolution reproduction of high resolution recorded information 失效
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：US5926444A
公开(公告)日：1999-07-20
申请号：US892922
申请日：1997-07-15
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 , G11B11/00
CPC分类号： G11B11/10515 , G11B11/10584 , G11B11/10586
摘要： A magneto-optical recording medium of the present invention 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：本发明的磁光记录介质具有由垂直磁化膜构成的记录层和在室温下处于面内磁化状态的读出层，随温度升高而变为垂直磁化状态。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。

37. 发明授权

US5629908A Magneto-optical recording medium having magnetization variable between in-plane magnetization and perpendicular magnetization 失效
标题翻译：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。

38. 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。

39. 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。

40. 发明授权

US5936916A Magneto-optical recording medium with multiple magnetic layers and methods related thereto 失效
标题翻译：具有多个磁性层的磁光记录介质及其相关方法
公开(公告)号：US5936916A
公开(公告)日：1999-08-10
申请号：US18267
申请日：1998-02-04
申请人： Junichiro Nakayama , Michinobu Mieda , Junji Hirokane , Akira Takahashi
发明人： Junichiro Nakayama , Michinobu Mieda , Junji Hirokane , Akira Takahashi
IPC分类号： G11B11/10 , G11B11/105 , G11B11/00 , G11B5/66
CPC分类号： G11B11/10584 , G11B11/10519 , G11B11/10586 , G11B11/10506
摘要： If the Curie points of the first magnetic layer, second magnetic layer, third magnetic layer and fourth magnetic layer of alloys of rare-earth metal and transition metal as ferrimagnetic materials showing perpendicular magnetization from room temperature to their Curie points are indicated as Tc1, Tc2, Tc3 and Tc4, respectively, the Curie points and room temperature are related by: room temperature
摘要翻译：如果作为铁氧体材料的稀土金属和过渡金属的合金的第一磁性层，第二磁性层，第三磁性层和第四磁性层的居里点显示出从室温到居里点的垂直磁化率，表示为Tc1，Tc2 ，Tc3和Tc4，居里点和室温分别与室温

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