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91. 发明授权

US5095350A Magneto-optic memory medium 失效
标题翻译：磁光存储介质
公开(公告)号：US5095350A
公开(公告)日：1992-03-10
申请号：US505476
申请日：1990-04-06
申请人： Kenji Ohta , Akira Takahashi , Hiroyuki Katayama , Tomokazu Ise , Tomoyuki Miyake , Junichiro Nakayama
发明人： Kenji Ohta , Akira Takahashi , Hiroyuki Katayama , Tomokazu Ise , Tomoyuki Miyake , Junichiro Nakayama
IPC分类号： G11B11/10 , G11B11/105 , H01F10/08
CPC分类号： G11B11/10586 , Y10S428/928 , Y10T428/12861
摘要： A magneto-optic memory medium of an exchange-coupled ferrimagnetic double-layered structure having a recording film of a specific amorphous GdTbFe alloy and a reading film of a specific amorphous GdNdFe alloy.
摘要翻译：具有特定无定形GdTbFe合金的记录膜和特定无定形GdNdFe合金的读取膜的交换耦合铁磁双层结构的磁光存储介质。

92. 发明授权

US5077714A Magneto-optical recording and reproducing device using the modulation of intensities of the magnetic field and light beam 失效
标题翻译：使用磁场和光束的强度调制的磁光记录和再现装置
公开(公告)号：US5077714A
公开(公告)日：1991-12-31
申请号：US340771
申请日：1989-04-20
申请人： Hiroyuki Katayama , Kenji Ohta , Junichiro Nakayama , Tomoyuki Miyake , Akira Takahashi
发明人： Hiroyuki Katayama , Kenji Ohta , Junichiro Nakayama , Tomoyuki Miyake , Akira Takahashi
IPC分类号： G11B11/10 , G11B11/105
CPC分类号： G11B11/1051 , G11B11/10515 , G11B11/10521 , G11B11/10528
摘要： A magneto-optical recording and reproducing device for recording and reproducing data determined by negative magnetized areas in a magneto-optical recording medium. The device including a laser beam output level control means for controlling the intensity of a laser beam when recording data on the medium. The device prevents the causes of false signals and incorrect detection influenced by residual negative magnetized domains by increasing laser beam intensity when rewriting positive magnetized areas to erase residual negative magnetized areas.

93. 发明授权

US5989671A Optical recording medium and manufacturing method thereof 失效
标题翻译：光记录介质及其制造方法
公开(公告)号：US5989671A
公开(公告)日：1999-11-23
申请号：US879916
申请日：1997-06-20
申请人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Kazuo Van
发明人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Kazuo Van
IPC分类号： G11B5/00 , G11B7/003 , G11B7/004 , G11B7/007 , G11B7/24 , G11B7/26 , G11B11/105 , G11B13/00 , G11B13/04 , G11B20/00 , G11B23/28 , G11B5/60
CPC分类号： G11B23/281 , G11B11/10582 , G11B13/00 , G11B13/04 , G11B13/045 , G11B23/28 , G11B5/00 , G11B7/0031 , G11B7/24 , G11B7/26 , G11B11/10502 , G11B20/00086 , G11B7/004 , G11B7/007 , Y10S428/90 , Y10T428/265
摘要： An optical tape including an optical recording layer for permitting information to be optically recorded thereon and a light-reflective magnetic layer. The light-reflective magnetic layer which reflects light projected onto the recording layer, also permits magnetic recording or magneto-optical recording to be performed thereon, thereby increasing a storage capacity of the optical tape remarkably. Further, the optical tape is provided with a layer to form guiding grooves for tracking control. The layer to form guiding grooves is made up of ultraviolet-hardening resin, photo-resist, or a photochromic material. For example, in the case of using ultraviolet-hardening resin, after a guiding groove pattern has been exposed by projecting an ultraviolet ray on a layer made up of ultraviolet-hardening resin, the exposed areas harden to form areas corresponding to guiding grooves between those exposed areas. The guiding grooves are formed by removing the areas corresponding to guiding grooves from the layer made up of the ultraviolet-hardening resin. Additionally, along with a guiding groove pattern, an index pattern can also be exposed. The guiding grooves thus formed do not reduce the recording density for information of the optical tape.
摘要翻译：一种光学带，包括用于允许光学记录信息的光学记录层和光反射性磁性层。反射投影到记录层上的光的光反射性磁性层也可以在其上进行磁记录或磁光记录，从而显着提高光带的存储容量。此外，光带设置有一层以形成用于跟踪控制的引导槽。形成导向槽的层由紫外线硬化树脂，光致抗蚀剂或光致变色材料构成。例如，在使用紫外线硬化树脂的情况下，通过在由紫外线固化型树脂构成的层上投射紫外线而引导槽图案露出后，露出的区域变硬，形成与引导槽对应的区域暴露地区。通过从由紫外线固化树脂构成的层去除与导向槽相对应的区域来形成引导槽。另外，与引导槽图案一样，还可以暴露索引图案。如此形成的引导槽不会降低用于光带的信息的记录密度。

94. 发明授权

US5635296A Magneto-optical recording medium whereon overwriting is permitted by light intensity modulation 失效
标题翻译：通过光强度调制允许覆盖的磁光记录介质
公开(公告)号：US5635296A
公开(公告)日：1997-06-03
申请号：US260095
申请日：1994-06-15
申请人： Junichiro Nakayama , Michinobu Mieda , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
发明人： Junichiro Nakayama , Michinobu Mieda , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10506 , G11B11/10523 , G11B11/10586 , Y10T428/26 , Y10T428/265
摘要： A magneto-optical recording medium includes a first magnetic layer, a second magnetic layer and a third magnetic layer respectively made of rare earth-transition metal alloys. The first magnetic layer has a perpendicular magnetization in a temperature range between room temperature and its Curie temperature. The second magnetic layer has its Curie temperature higher than that of the first magnetic layer, and coercive force thereof at room temperature is nearly zero. The third magnetic layer has a perpendicular magnetization in a temperature range between room temperature and its Curie temperature. The Curie temperature of the third magnetic layer is higher than the Curie temperature of the first magnetic layer. The coercive force of the third magnetic layer at room temperature is lower than that of the first magnetic layer. The compensation temperature of the third magnetic layer is higher than that of the second magnetic layer. Having the above arrangement, an overwriting is permitted on the magneto-optical recording medium, and an initializing magnetic field and a recording magnetic field in a magneto-optical recording and reproducing device are set in the same direction.
摘要翻译：磁光记录介质包括分别由稀土 - 过渡金属合金制成的第一磁性层，第二磁性层和第三磁性层。第一磁性层在室温和居里温度之间的温度范围内具有垂直磁化强度。第二磁性层的居里温度高于第一磁性层，其室温下的矫顽力几乎为零。第三磁性层在室温与其居里温度之间的温度范围内具有垂直磁化强度。第三磁性层的居里温度高于第一磁性层的居里温度。室温下第三磁性层的矫顽力低于第一磁性层的矫顽力。第三磁性层的补偿温度高于第二磁性层的补偿温度。具有上述结构，在磁光记录介质上允许重写，磁光记录和再现装置中的初始化磁场和记录磁场被设置在相同的方向上。

95. 发明授权

US5674583A Optical recording medium and manufacturing method thereof 失效
标题翻译：光记录介质及其制造方法
公开(公告)号：US5674583A
公开(公告)日：1997-10-07
申请号：US461164
申请日：1995-06-05
申请人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Kazuo Van
发明人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Kazuo Van
IPC分类号： G11B5/00 , G11B7/003 , G11B7/004 , G11B7/007 , G11B7/24 , G11B7/26 , G11B11/105 , G11B13/00 , G11B13/04 , G11B20/00 , G11B23/28 , G11B5/66
CPC分类号： G11B23/281 , G11B11/10582 , G11B13/00 , G11B13/04 , G11B13/045 , G11B23/28 , G11B5/00 , G11B7/0031 , G11B7/24 , G11B7/26 , G11B11/10502 , G11B20/00086 , G11B7/004 , G11B7/007 , Y10S428/90 , Y10T428/265
摘要： An optical tape including an optical recording layer for permitting information to be optically recorded thereon and a light-reflective magnetic layer; the light-reflective magnetic layer which reflects light projected onto the recording layer, also permits magnetic recording or magneto-optical recording to be performed thereon, thereby increasing a storage capacity of the optical tape remarkably; further, the optical tape is provided with a layer to form guiding grooves for tracking control, which layer to form guiding grooves is made up of ultraviolet-hardening resin, photo-resist, or a photochromic material.
摘要翻译：一种光学带，包括用于允许光学记录信息的光学记录层和光反射性磁性层; 反映投影到记录层上的光的光反射性的磁性层也可以在其上进行磁记录或磁光记录，从而显着地增加了光带的存储容量。此外，光带设置有层以形成用于跟踪控制的引导槽，其中形成导向槽的层由紫外线硬化树脂，光致抗蚀剂或光致变色材料构成。

96. 发明授权

US5278810A Magneto-optical recording medium whereon recording is carried out with an overwriting function 失效
标题翻译：以覆盖功能进行记录的磁光记录介质
公开(公告)号：US5278810A
公开(公告)日：1994-01-11
申请号：US909969
申请日：1992-07-07
申请人： Akira Takahashi , Junichiro Nakayama , Hiroyuki Katayama , Kenji Ohta
发明人： Akira Takahashi , Junichiro Nakayama , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B11/00
CPC分类号： G11B11/10515 , G11B11/10519 , G11B11/10584 , G11B11/10586
摘要： A magneto-optical recording medium is consisted of a recording layer, a readout layer and a writing layer. The readout layer is made of rare earth-transition metal alloys wherein an easy magnetization axis is parallel to the recording layer at room temperature, and the easy magnetization axis is perpendicular to the recording layer as the temperature of the readout layer is raised above a predetermined temperature by irradiating thereon with a light beam. The writing layer is made of rare earth-transition metal alloys having such coercive force that a magnetization direction thereof is switched by an external magnetic field at room temperature and Curie temperature that is above Curie temperature of the recording layer. With the above arrangement, an overwriting function can be achieved by adjusting a light intensity of the light beam so that the temperature falls within the range between the Curie temperature of the writing layer and the Curie temperature of the recording layer, or above the Curie temperature of the writing layer.
摘要翻译：磁光记录介质由记录层，读出层和书写层构成。读出层由稀土 - 过渡金属合金制成，其中容易的磁化轴在室温下平行于记录层，随着读出层的温度升高到预定的温度，易磁化轴垂直于记录层通过用光束照射其上的温度。书写层由具有这样的矫顽力的稀土 - 过渡金属合金制成，其磁化方向由室温下的外部磁场和高于记录层的居里温度的居里温度切换。通过上述配置，可以通过调节光束的光强度使得温度落在书写层的居里温度和记录层的居里温度之间或居里温度以上的范围内来实现重写功能的写作层。

97. 发明申请

US20070177489A1 Optical recording medium recorded with information in depth direction, and method and apparatus of reproduction therefrom 失效
标题翻译：在深度方向记录有信息的光记录介质，以及从其再现的方法和装置
公开(公告)号：US20070177489A1
公开(公告)日：2007-08-02
申请号：US11339759
申请日：2006-01-24
申请人： Junsaku Nakajima , Hitoshi Takeuchi , Masaru Nomura , Kenji Ohta
发明人： Junsaku Nakajima , Hitoshi Takeuchi , Masaru Nomura , Kenji Ohta
IPC分类号： G11B7/00
CPC分类号： G11B20/00688 , G11B7/005 , G11B7/007 , G11B7/24085 , G11B20/00086
摘要： An optical disk has a lead-in region provided at the inner circumference side and a user region provided at the outer circumference side. Pit string 3 of pits of different depths-is-formed-in-the-lead-in-region. Light beam reflected from the pit string is detected by detector and TPP and RF signals are output by differential amplifier and addition amplifier. A ternary signal is restored from pits based on the TPP and RF signals. Information is recorded by pits of the same depth in the user region. Recording information in the depth direction in the lead-in region increases the recording capacity thereof The information recorded in the depth direction in the lead-in region cannot be transferred to a user region of another optical disk.
摘要翻译：光盘具有设置在内周侧的引入区域和设置在外周侧的用户区域。不同深度的坑的第3个坑的区域中的铅。通过检测器检测从凹坑串反射的光束，TPP和RF信号由差分放大器和相加放大器输出。基于TPP和RF信号从凹坑恢复三态信号。信息由用户区域中相同深度的凹坑记录。在导入区域中的深度方向的记录信息增加了记录容量。在导入区域中记录在深度方向上的信息不能传送到另一个光盘的用户区域。

98. 发明授权

US07580329B2 Optical recording medium recorded with information in depth direction, and method and apparatus of reproduction therefrom 失效
标题翻译：在深度方向记录有信息的光记录介质，以及从其再现的方法和装置
公开(公告)号：US07580329B2
公开(公告)日：2009-08-25
申请号：US11339759
申请日：2006-01-24
申请人： Junsaku Nakajima , Hitoshi Takeuchi , Masaru Nomura , Kenji Ohta
发明人： Junsaku Nakajima , Hitoshi Takeuchi , Masaru Nomura , Kenji Ohta
IPC分类号： G11B7/00
CPC分类号： G11B20/00688 , G11B7/005 , G11B7/007 , G11B7/24085 , G11B20/00086
摘要： An optical disk has a lead-in region provided at the inner circumference side and a user region provided at the outer circumference side. Pit string 3 of pits of different depths is formed in the lead in region. Light beam reflected from the pit string is detected by detector and TPP and RF signals are output by differential amplifier and addition amplifier. A ternary signal is restored from pits based on the TPP and RF signals. Information is recorded by pits of the same depth in the user region. Recording information in the depth direction in the lead-in region increases the recording capacity thereof. The information recorded in the depth direction in the lead-in region cannot be transferred to a user region of another optical disk.
摘要翻译：光盘具有设置在内周侧的引入区域和设置在外周侧的用户区域。在引导区域中形成具有不同深度的凹坑的凹坑串3。通过检测器检测从凹坑串反射的光束，TPP和RF信号由差分放大器和相加放大器输出。基于TPP和RF信号从凹坑恢复三态信号。信息由用户区域中相同深度的凹坑记录。在导入区域中沿深度方向记录信息增加其记录容量。在导入区域中沿深度方向记录的信息不能传送到另一个光盘的用户区域。

99. 发明授权

US07050383B2 Optical recording medium recorded with information in depth direction, and method and apparatus of reproduction therefrom 有权
公开(公告)号：US07050383B2
公开(公告)日：2006-05-23
申请号：US09824554
申请日：2001-04-02
申请人： Junsaku Nakajima , Hitoshi Takeuchi , Masaru Nomura , Kenji Ohta
发明人： Junsaku Nakajima , Hitoshi Takeuchi , Masaru Nomura , Kenji Ohta
IPC分类号： G11B7/00
CPC分类号： G11B20/00688 , G11B7/005 , G11B7/007 , G11B7/24085 , G11B20/00086
摘要： An optical disk has a lead-in region provided at the inner circumference side and a user region provided at the outer circumference side. Pit string 3 of pits of different depths is formed in the lead-in region. Light beam reflected from the pit string is detected by detector and TPP and RF signals are output by differential amplifier and addition amplifier. A ternary signal is restored from pits based on the TPP and RF signals. Information is recorded by pits of the same depth in the user region. Recording information in the depth direction in the lead-in region increases the recording capacity thereof. The information recorded in the depth direction in the lead-in region cannot be transferred to a user region of another optical disk.

100. 发明授权

US07113460B2 Optical disk having pits of different depths formed therein, optical disk reproducing apparatus for reproducing the optical disk, and method of tracking the optical disk 有权
标题翻译：具有形成在其中的不同深度的凹坑的光盘，用于再现光盘的光盘再现装置，以及跟踪光盘的方法
公开(公告)号：US07113460B2
公开(公告)日：2006-09-26
申请号：US09800082
申请日：2001-03-05
申请人： Junsaku Nakajima , Hitoshi Takeuchi , Masaru Nomura , Kenji Ohta
发明人： Junsaku Nakajima , Hitoshi Takeuchi , Masaru Nomura , Kenji Ohta
IPC分类号： G11B7/00
CPC分类号： G11B7/24085 , G11B7/0901 , G11B7/0906 , G11B7/0941 , G11B7/24088
摘要： On an optical disk, a string of a plurality of pits having two different depths is formed. Quantity of light reflected from the pit string is detected by a photoreceptor element, and based on the detected quantity of reflected light, a pit depth detecting unit detects depth of each pit. Based on the detected quantity of reflected light, a servo signal generating unit generates a tracking servo signal. An output control unit supplies the generated tracking servo signal when a pit of such depth that is to be reproduced is tracked, and holds and supplies an immediately preceding tracking servo signal when a pit of different depth is being tracked, based on the result of detection by the pit depth detecting unit.
摘要翻译：在光盘上形成具有两个不同深度的多个凹坑的串。由感光元件检测从凹坑串反射的光量，并且基于检测到的反射光量，凹坑深度检测单元检测每个凹坑的深度。基于检测到的反射光量，伺服信号产生单元产生跟踪伺服信号。输出控制单元根据检测结果，在跟踪要再现的这种深度的凹坑被跟踪时提供产生的跟踪伺服信号，并且当跟踪不同深度的凹坑时保持并提供紧邻的跟踪伺服信号通过凹坑深度检测单元。

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