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81. 发明授权

US06269056B1 Recording method for a magneto-optical recording medium for position adjustment of a magnetic head 失效
标题翻译：用于磁头位置调整的磁光记录介质的记录方法
公开(公告)号：US06269056B1
公开(公告)日：2001-07-31
申请号：US09421785
申请日：1999-10-19
申请人： Masahiro Birukawa , Yasumori Hino , Norio Miyatake
发明人： Masahiro Birukawa , Yasumori Hino , Norio Miyatake
IPC分类号： G11B1100
CPC分类号： G11B11/10515 , G11B5/59677 , G11B11/10508 , G11B11/10513 , G11B11/10523 , G11B11/10573 , G11B11/10595
摘要： A reading method for a magneto-optical recording medium is provided, irradiating laser light as a reading beam and using a magnetic head. High density and high transmission rate are possible and a correct reading can be performed according to the length of recording marks by reading the magneto-optical recording medium while impressing a magnetic field with an orientation promoting the translation of magnetic domain walls. In the magnetic super resolution type magneto-optical recording medium, which attains a signal only from one portion of the irradiation domain of the reading beam and has at least a recording layer and a reading layer on a substrate, the focused laser light is irradiated as a reading beam and the magnetic field is modulated, using the magnetic head, which is equipped with a slider and glides or floats on the recording medium. The magneto-optical recording medium is read, while impressing a magnetic field 161 that accelerates at least the transcription of the magnetization of the recording layer into the reading layer.
摘要翻译：提供了一种用于磁光记录介质的读取方法，照射激光作为读取光束并使用磁头。高密度和高透射率是可能的，并且可以通过读取磁光记录介质，同时以促进磁畴壁的平移的取向施加磁场来根据记录标记的长度来执行正确的读取。在仅从读取光束的照射域的一部分获得信号并且在基板上至少具有记录层和读取层的磁性超分辨率型磁光记录介质中，聚焦的激光以使用配备有滑块并在记录介质上滑动或浮动的磁头来调制读取光束和磁场。读取磁光记录介质，同时施加加速至少将记录层的磁化转录到读取层中的磁场161。

82. 发明授权

US06262949B1 Multilayer resonance device and magneto-optical recording medium with magnetic center layer of a different thickness than that of the components of the reflecting layers 失效
标题翻译：多层共振装置和磁光记录介质，其磁性中心层的厚度与反射层的分量不同
公开(公告)号：US06262949B1
公开(公告)日：2001-07-17
申请号：US09097746
申请日：1998-06-16
申请人： Mitsuteru Inoue , Kenichi Arai , Toshitaka Fujii , Masanori Abe , Koji Matsumoto
发明人： Mitsuteru Inoue , Kenichi Arai , Toshitaka Fujii , Masanori Abe , Koji Matsumoto
IPC分类号： G11B1100
CPC分类号： G11B11/10584 , G11B11/10586
摘要： A multilayer resonance device of the invention includes regularly stacked layers each formed by alternately stacking a magnetic substance and a dielectric substance with thickness regularity, and an irregular layer including a magnetic substance, having a thickness disaccording with the thickness regularity and disposed between the regularly stacked layers. Thus, the multilayer resonance device can attain a large Faraday rotation angle, a large magneto-optical effect, and a practical total layer thickness.
摘要翻译：本发明的多层共振装置包括规则层叠的层，每层通过交替层叠具有厚度规律性的磁性物质和电介质物质形成，并且包括磁性物质的不规则层，其厚度根据厚度规则性而被排列在规则堆叠层。因此，多层共振装置可以获得大的法拉第旋转角度，大的磁光效应和实际的总层厚度。

83. 发明授权

US06262948B1 Optical disk having a protective layer specified thickness relative to the NA of an objective lens and the wavelength of light source 失效
标题翻译：具有相对于物镜的NA规定厚度的保护层和光源的波长的光盘
公开(公告)号：US06262948B1
公开(公告)日：2001-07-17
申请号：US09082830
申请日：1998-05-21
申请人： Tetsu Watanabe , Yoshio Aoki
发明人： Tetsu Watanabe , Yoshio Aoki
IPC分类号： G11B1100
CPC分类号： G11B7/00718 , G11B7/0037 , G11B7/007 , G11B7/1372 , G11B7/1374 , G11B7/24038 , G11B7/24059 , G11B7/243 , G11B11/10532 , G11B11/10534 , G11B11/10541 , G11B11/10543 , G11B11/10554 , G11B11/10558 , G11B11/10584 , G11B2007/13727
摘要： An optical disc system uses an optical disc with a light-transmitting cover and an objective lens for bundling or focusing a light beam on a recording layer of the optical disc in order to perform recording and/or reproducing of information. The thickness of the light-transmitting cover falls within the range of 0.05 mm to 0.6 mm, the numerical aperture (NA) of the objective lens is set to fall within the range of 0.55 to 1.10, and the wavelength of the light beam is selected to be between 100 nm to 780 nm.
摘要翻译：光盘系统使用具有透光盖和物镜的光盘，用于将光束聚集或聚焦在光盘的记录层上，以便执行信息的记录和/或再现。透光罩的厚度在0.05mm至0.6mm的范围内，物镜的数值孔径（NA）设定在0.55至1.10的范围内，并且选择光束的波长在100nm至780nm之间。

84. 发明授权

US06256266B1 Magneto-optical recording medium having lands and grooves of discontinue regions 有权
标题翻译：磁光记录介质具有不连续区域的槽脊和凹槽
公开(公告)号：US06256266B1
公开(公告)日：2001-07-03
申请号：US09382672
申请日：1999-08-25
申请人： Kenichiro Mitani
发明人： Kenichiro Mitani
IPC分类号： G11B1100
CPC分类号： G11B27/24 , G11B7/007 , G11B7/00745 , G11B11/10578 , G11B11/10584 , G11B27/19 , G11B2220/2525
摘要： A magneto-optical recording medium has a plane structure in which are alternately arranged a groove having discontinuous regions formed at every 120 &mgr;m, for example, and land having discontinuous regions formed at the same every 120 &mgr;m. The position where the discontinuous region of the groove is formed differs from the position where the discontinuous region of the land is formed. The discontinuous region of the land is provided at a position corresponding to substantially the middle of respective continuous regions of the groove. The discontinuous region of the groove is provided at a position corresponding to substantially the center of the continuous region of the land. The width of the groove and land is approximately 0.4 &mgr;m. Therefore, a synchronizing signal arising from a discontinuous region formed periodically at the groove or land can be output properly even when the width of the groove and land is narrowed.
摘要翻译：磁光记录介质具有平面结构，其平面结构交替地布置有例如每120μm形成的具有不连续区域的凹槽，并且具有每120μm形成的具有不连续区域的平台。形成槽的不连续区域的位置与形成焊盘的不连续区域的位置不同。脊的不连续区域设置在与凹槽的相应连续区域的大致中间相对应的位置处。凹槽的不连续区域设置在大致对应于平台的连续区域的中心的位置处。槽和焊盘的宽度约为0.4μm。因此，即使当槽和焊盘的宽度变窄时，也可以适当地输出由在槽或焊盘周期性地形成的不连续区域产生的同步信号。

85. 发明授权

US06246641B1 Magneto-optical recording-reproducing method and apparatus utilizing domain wall displacement 有权
标题翻译：磁光记录再现方法和利用畴壁位移的装置
公开(公告)号：US06246641B1
公开(公告)日：2001-06-12
申请号：US09162158
申请日：1998-09-29
申请人： Yasuyuki Miyaoka
发明人： Yasuyuki Miyaoka
IPC分类号： G11B1100
CPC分类号： G11B7/126 , G11B11/10515 , G11B11/10595 , G11B20/182
摘要： Disclosed herein is a magneto-optical recording-reproducing method, wherein a domain wall of a record mark is displaced on a recording medium, thereby conducting the reproduction of information, the method comprising the steps of reproducing the prescribed record signals recorded in the recording medium by plural stages of reproduction power to detect reproduction signals; differentiating the reproduction signals to detect differential signals; and determining the reproduction power on the basis of the amplitude values of the differential signals.
摘要翻译：这里公开了一种磁光记录再现方法，其中记录标记的畴壁在记录介质上移位，从而进行信息的再现，该方法包括以下步骤：再现记录在记录介质中的规定记录信号通过多级再现功率来检测再现信号; 区分再现信号以检测差分信号; 以及基于差分信号的振幅值确定再现功率。

86. 发明授权

US06243327B1 Magneto-optical disk system having a relation between a numerical aperture of an objective lens and the thickness of a cover layer 失效
标题翻译：具有物镜的数值孔径与覆盖层的厚度之间关系的磁光盘系统
公开(公告)号：US06243327B1
公开(公告)日：2001-06-05
申请号：US09473657
申请日：1999-12-29
申请人： Ariyoshi Nakaoki , Kimihiro Saito
发明人： Ariyoshi Nakaoki , Kimihiro Saito
IPC分类号： G11B1100
CPC分类号： B82Y10/00 , G11B7/1372 , G11B11/10534 , G11B11/10545 , G11B11/10584 , G11B11/10591 , G11B11/10593
摘要： The object of the present invention is to improve the accuracy of a recording signal and a reproduction signal of a magneto-optical recording medium. In a magneto-optical recording medium (2) having at least a metallic reflection layer (3), a back dielectric layer (4), a magneto-optical recording layer (5) and a light transmitting dielectric layer (6) sequentially provided on a substrate (8), the thickness of the light transmitting dielectric layer (6) closer to a convergent lens (1) is set at 50 to 80 nm. Alternatively, the refraction index n of the light transmitting dielectric layer (6) is selected to satisfy the relationship of n0×0.8≦n with the refraction index n0 of the convergent lens (1).
摘要翻译：本发明的目的是提高磁光记录介质的记录信号和再现信号的精度。在具有至少金属反射层（3）的磁光记录介质（2）中，背面介电层（4），磁光记录层（5）和光传输介质层（6）依次设置在基板（8）将透光电介质层（6）的接近聚光透镜（1）的厚度设定为50〜80nm。或者，选择透光电介质层（6）的折射率n以满足n0x0.8 <= n与会聚透镜（1）的折射率n0的关系。

87. 发明授权

US06222797B1 Position adjustment method of a magnetic head using magneto-optical recording medium, and optical recording medium 失效
标题翻译：使用磁光记录介质的磁头的位置调整方法和光记录介质
公开(公告)号：US06222797B1
公开(公告)日：2001-04-24
申请号：US09420476
申请日：1999-10-19
申请人： Masahiro Birukawa , Yasumori Hino , Norio Miyatake
发明人： Masahiro Birukawa , Yasumori Hino , Norio Miyatake
IPC分类号： G11B1100
CPC分类号： G11B11/10515 , G11B5/59677 , G11B11/10508 , G11B11/10513 , G11B11/10523 , G11B11/10573 , G11B11/10595
摘要： A reading method for a magneto-optical recording medium is provided, irradiating laser light as a reading beam and using a magnetic head. High density and high transmission rate are possible and a correct reading can be performed according to the length of recording marks by reading the magneto-optical recording medium while impressing a magnetic field with an orientation promoting the translation of magnetic domain walls. In the magnetic super resolution type magneto-optical recording medium, which attains a signal only from one portion of the irradiation domain of the reading beam and has at least a recording layer and a reading layer on a substrate, the focused laser light is irradiated as a reading beam and the magnetic field is modulated, using the magnetic head, which is equipped with a slider and glides or floats on the recording medium. The magneto-optical recording medium is read, while impressing a magnetic field 161 that accelerates at least the transcription of the magnetization of the recording layer into the reading layer.
摘要翻译：提供了一种用于磁光记录介质的读取方法，照射激光作为读取光束并使用磁头。高密度和高透射率是可能的，并且可以通过读取磁光记录介质，同时以促进磁畴壁的平移的取向施加磁场来根据记录标记的长度来执行正确的读取。在仅从读取光束的照射域的一部分获得信号并且在基板上至少具有记录层和读取层的磁性超分辨率型磁光记录介质中，聚焦的激光以使用配备有滑块并在记录介质上滑动或浮动的磁头来调制读取光束和磁场。读取磁光记录介质，同时施加加速至少将记录层的磁化转录到读取层中的磁场161。

88. 发明授权

US06208594B1 Efficient linearization of saturation channels 失效
标题翻译：饱和通道的高效线性化
公开(公告)号：US06208594B1
公开(公告)日：2001-03-27
申请号：US09325012
申请日：1999-06-02
申请人： William D. Huber , Robert F. Smith , Terry A. Aultman , John C. Kuklewicz
发明人： William D. Huber , Robert F. Smith , Terry A. Aultman , John C. Kuklewicz
IPC分类号： G11B1100
CPC分类号： G11B5/09 , G11B5/012 , G11B5/03 , G11B7/004 , G11B11/10508 , G11B11/10515 , G11B20/10 , G11B2005/0029
摘要： A more linear duty cycle modulator is made by converting the sine wave bias into a triangle wave bias utilizing a sample and hold circuit as the base band signal is added; on readout, low pass filtering of the high frequency content of the duty cycle modulated waveform, the base band signal is recovered at full amplitude as if saturation recording was being utilized. In a further preferred approach, quadature amplitude modulation and demodulation is utilized.
摘要翻译：通过添加基带信号，利用采样和保持电路将正弦波偏压转换为三角波偏置来制作更线性的占空比调制器; 在读出时，对占空比调制波形的高频内容进行低通滤波，基带信号以全幅振幅恢复，如同利用饱和记录一样。在另一优选方法中，利用了四次幅度调制和解调。

89. 发明授权

US06198704B1 Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US06198704B1
公开(公告)日：2001-03-06
申请号：US09496654
申请日：2000-02-03
申请人： Yoshihito Fukushima , Jun Shimizu , Takeshi Gouko , Atsushi Takeuchi , Yuko Nakamura , Manabu Iwai
发明人： Yoshihito Fukushima , Jun Shimizu , Takeshi Gouko , Atsushi Takeuchi , Yuko Nakamura , Manabu Iwai
IPC分类号： G11B1100
CPC分类号： G11B11/10593 , G11B11/10515
摘要： A magneto-optical recording medium from which data is read by using a Kerr effect and which is capable of preventing signal imbalance caused from change in birefringence even in a system in which the amplitude of a reproduced signal is small and the spatial frequency of a shortest record signal train of the magneto-optical recording medium is 1.1×NA/&lgr;(line/m) or higher. The photoelastic coefficient of a substrate of the magneto-optical recording medium is 50×10−13 cm2/dyne or smaller. The vertical birefringence of the substrate is 250×10−6 or smaller, the coefficient of water absorption of the same is 0.2 wt % or lower and the thermal coefficient of expansion of the same is 6.5×10−5 cm/cm·° C. or lower.
摘要翻译：一种磁光记录介质，通过使用克尔效应从中读取数据，并且即使在再现信号的幅度小，空间频率最短的系统中也能够防止由双折射变化引起的信号失衡磁光记录介质的记录信号序列为1.1xNA / lambd（行/ m）以上。磁光记录介质的基板的光弹性系数为50×10 13 cm 2 / dyne以下。基板的垂直双折射率为250×10 -6以下，其吸水系数为0.2重量％以下，其热膨胀系数为6.5×10 -5 cm / cm。℃以下。

90. 发明授权

US06188649B1 Method for reading magnetic super resolution type magneto-optical recording medium 失效
标题翻译：磁性超分辨率型磁光记录介质的读取方法
公开(公告)号：US06188649B1
公开(公告)日：2001-02-13
申请号：US09420686
申请日：1999-10-19
申请人： Masahiro Birukawa , Yasumori Hino , Norio Miyatake
发明人： Masahiro Birukawa , Yasumori Hino , Norio Miyatake
IPC分类号： G11B1100
CPC分类号： G11B11/10515 , G11B5/59677 , G11B11/10508 , G11B11/10513 , G11B11/10523 , G11B11/10573 , G11B11/10595
摘要： A reading method for a magneto-optical recording medium is provided, irradiating laser light as a reading beam and using a magnetic head. High density and high transmission rate are possible and a correct reading can be performed according to the length of recording marks by reading the magneto-optical recording medium while impressing a magnetic field with an orientation promoting the translation of magnetic domain walls. In the magnetic super resolution type magneto-optical recording medium, which attains a signal only from one portion of the irradiation domain of the reading beam and has at least a recording layer and a reading layer on a substrate, the focused laser light is irradiated as a reading beam and the magnetic field is modulated, using the magnetic head, which is equipped with a slider and glides or floats on the recording medium. The magneto-optical recording medium is read, while impressing a magnetic field 161 that accelerates at least the transcription of the magnetization of the recording layer into the reading layer.
摘要翻译：提供了一种用于磁光记录介质的读取方法，照射激光作为读取光束并使用磁头。高密度和高透射率是可能的，并且可以通过读取磁光记录介质，同时以促进磁畴壁的平移的取向施加磁场来根据记录标记的长度来执行正确的读取。在仅从读取光束的照射域的一部分获得信号并且在基板上至少具有记录层和读取层的磁性超分辨率型磁光记录介质中，聚焦的激光以使用配备有滑块并在记录介质上滑动或浮动的磁头来调制读取光束和磁场。读取磁光记录介质，同时施加加速至少将记录层的磁化转录到读取层中的磁场161。

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