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11. 发明授权

US5909412A Method for reproducing optical disk 失效
标题翻译：光盘再现方法
公开(公告)号：US5909412A
公开(公告)日：1999-06-01
申请号：US977206
申请日：1997-11-24
申请人： Junichiro Nakayama , Naoyasu Iketani , Michinobu Mieda , Yoshiteru Murakami , Akira Takahashi
发明人： Junichiro Nakayama , Naoyasu Iketani , Michinobu Mieda , Yoshiteru Murakami , Akira Takahashi
IPC分类号： G11B7/00 , G11B7/005 , G11B7/007 , G11B7/09 , G11B27/19 , G11B27/30 , G11B17/22
CPC分类号： G11B7/24082 , G11B27/19 , G11B27/3027 , G11B7/0903 , G11B7/0938
摘要： In a method for reproducing an optical disk of the present invention, address information of an optical disk, provided with tracking guides composed of (1) a wobbling groove wobbled in accordance with address information and (2) a normal groove which is not wobbled, is reproduced. The wobbling groove and the normal groove are alternately provided in a radius direction of the optical disk. When carrying out recording and reproducing of the optical disk, three beams composed of one main beam and two sub beams are used. The three beams are projected so that (a) the sub beams are respectively on the wobbling groove and the normal groove and (b) the main beam is on a land between the wobbling groove and the normal groove. The address information is found from reflected light of one of the sub beams. The above arrangement allows respective central portions of the sub beams to track the tracking guides. Therefore, even in the case where the optical disk is tilted or vibrated, the sub beams do not deviate totally off the tracking guides, thereby permitting to stably reproduce the address information.
摘要翻译：在本发明的再现光盘的方法中，具有由（1）根据地址信息摆动的摆动槽和（2）未摆动的正常槽构成的跟踪引导件的光盘的地址信息，被转载。在光盘的半径方向交替设置摆动槽和法线槽。当执行光盘的记录和再现时，使用由一个主光束和两个子光束组成的三个光束。这三个光束被投影，使得（a）子光束分别位于摆动槽和普通槽上，（b）主光束位于摆动槽和正常槽之间的焊盘上。从一个子光束的反射光中找到地址信息。上述布置允许子光束的各个中心部分跟踪跟踪引导件。因此，即使在光盘倾斜或振动的情况下，子光束也不完全偏离跟踪引导件，从而允许稳定地再现地址信息。

12. 发明授权

US5889740A Magneto-optical recording medium and magneto-optical recording method 失效
标题翻译：磁光记录介质和磁光记录方法
公开(公告)号：US5889740A
公开(公告)日：1999-03-30
申请号：US957285
申请日：1997-10-24
申请人： Junichiro Nakayama , Go Mori , Naoyasu Iketani , Akira Takahashi
发明人： Junichiro Nakayama , Go Mori , Naoyasu Iketani , Akira Takahashi
IPC分类号： G11B11/10 , G11B11/105 , G11B11/00
CPC分类号： G11B11/10584 , G11B11/10521 , G11B11/10506 , G11B11/10515 , G11B11/10591
摘要： Featured is a magneto-optical recording medium including a first magnetic layer, a second magnetic layer, a third magnetic layer and a fourth magnetic layer formed one on another in this order. The first, second, third and fourth magnetic layers have Curie points Tc1, Tc2, Tc3 and Tc4, respectively, which satisfy the condition of Tc3
摘要翻译：特征是包括依次形成在其上的第一磁性层，第二磁性层，第三磁性层和第四磁性层的磁光记录介质。第一，第二，第三和第四磁性层分别具有满足Tc3

13. 发明授权

US5563852A Magneto-optical recording medium having a readout layer with varying composition and curie temperature 失效
标题翻译：磁光记录介质具有不同组成和居里温度的读出层
公开(公告)号：US5563852A
公开(公告)日：1996-10-08
申请号：US350317
申请日：1994-12-05
申请人： Yoshiteru Murakami , Naoyasu Iketani , Akira Takahashi , Kenji Ohta
发明人： Yoshiteru Murakami , Naoyasu Iketani , Akira Takahashi , Kenji Ohta
IPC分类号： C23C14/18 , C23C14/34 , C23C14/56 , G11B11/105 , G11B5/66
CPC分类号： C23C14/3414 , C23C14/185 , C23C14/568 , G11B11/10582 , G11B11/10586 , G11B11/10589
摘要： A magneto-optical recording medium includes a readout layer has in-plane magnetization at room temperature and in which a transition occurs from in-plane magnetization to perpendicular magnetization when temperature thereof is raised, and a recording layer for recording thereon information. The composition of the readout layer varies in a direction perpendicular to the surface thereof, and in the readout layer, the Co density on the light incident side is higher than the Co density on the interface between the readout layer and the recording layer. Therefore, the Curie temperature on the reproducing light incident side of the readout layer is high and the the polar Kerr rotation angle in reproducing increases, thereby achieving improvements in a reproducing signal quality. On the other hand, since the Curie temperature on the interface is low, the shift of the threshold temperature at which a transition occurs from in-plane to perpendicular by the magnetic interaction between the layers can be suppressed, thereby achieving a high quality reproducing signal without changing the laser power required for reproduction very much.
摘要翻译：磁光记录介质包括读出层，其在室温下具有面内磁化，并且其温度升高时从面内磁化转变为垂直磁化，并且在其上记录信息的记录层。读出层的组成在垂直于其表面的方向上变化，在读出层中，光入射侧的Co密度高于读出层与记录层之间的界面上的Co密度。因此，读出层的再现光入射侧的居里温度高，再现时的极性克尔旋转角度增加，从而实现再现信号质量的改善。另一方面，由于界面的居里温度低，所以可以抑制通过层之间的磁相互作用从平面到垂直发生的阈值温度的偏移，从而实现高质量再现信号而不需要更改再生所需的激光功率。

14. 发明授权

US5824426A Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US5824426A
公开(公告)日：1998-10-20
申请号：US535967
申请日：1995-09-28
申请人： Naoyasu Iketani , Yoshiteru Murakami , Akira Takahashi , Kenji Ohta
发明人： Naoyasu Iketani , Yoshiteru Murakami , Akira Takahashi , Kenji Ohta
IPC分类号： C23C14/18 , C23C14/34 , G11B7/26 , G11B11/105 , G11B5/716 , G11B5/66 , G11B11/00
CPC分类号： C23C14/3407 , C23C14/185 , G11B11/10582 , G11B11/10586 , G11B7/26
摘要： A magneto-optical recording medium includes a readout layer having in-plane magnetization at room temperature and in which a transition occurs from in-plane magnetization to a perpendicular magnetization when temperature rises, and a recording layer for storing information thereon magneto-optically. In the readout layer made of GdFeCo by adding Nd thereto, an amount of Nd to be added changes in a direction perpendicular to its film surface, and an amount of Nd is larger on a light incidence side than on the other side. As a result, even when a laser with a short wavelength is used, high density recording can be achieved as undesirable recording and reproducing operations due to a change in a magnetic interaction is prevented and also deterioration in quality of a reproducing signal is prevented.
摘要翻译：磁光记录介质包括在室温下具有面内磁化的读出层，并且其中当温度升高时从面内磁化转变为垂直磁化的过渡;以及用于在磁光上存储信息的记录层。在通过添加Nd而由GdFeCo制成的读出层中，要添加的Nd的量在垂直于其膜表面的方向上变化，并且Nd的量在光入射侧比在另一侧更大。结果，即使使用具有短波长的激光器，由于防止了磁相互作用的变化而导致由于不期望的记录和再现操作而导致高密度记录，并且也防止再现信号的质量劣化。

15. 发明授权

US5764601A Method of manufacturing a magneto-optical recording medium having a readout layer with varying composition and curie temperature 失效
标题翻译：具有具有不同组成和居里温度的读出层的磁光记录介质的制造方法
公开(公告)号：US5764601A
公开(公告)日：1998-06-09
申请号：US685115
申请日：1996-07-23
申请人： Yoshiteru Murakami , Naoyasu Iketani , Akira Takahashi , Kenji Ohta
发明人： Yoshiteru Murakami , Naoyasu Iketani , Akira Takahashi , Kenji Ohta
IPC分类号： C23C14/18 , C23C14/34 , C23C14/56 , G11B11/105 , G11B11/00 , G11B5/66
CPC分类号： C23C14/3414 , C23C14/185 , C23C14/568 , G11B11/10582 , G11B11/10586 , G11B11/10589
摘要： A magneto-optical recording medium includes a readout layer has in-plane magnetization at room temperature and in which a transition occurs from in-plane magnetization to perpendicular magnetization when temperature thereof is raised, and a recording layer for recording thereon information. The composition of the readout layer varies in a direction perpendicular to the surface thereof, and in the readout layer, the Co density on the light incident side is higher than the Co density on the interface between the readout layer and the recording layer. Therefore, the Curie temperature on the reproducing light incident side of the readout layer is high and the the polar Kerr rotation angle in reproducing increases, thereby achieving improvements in a reproducing signal quality. On the other hand, since the Curie temperature on the interface is low, the shift of the threshold temperature at which a transition occurs from in-plane to perpendicular by the magnetic interaction between the layers can be suppressed, thereby achieving a high quality reproducing signal without changing the laser power required for reproduction very much.
摘要翻译：磁光记录介质包括读出层，其在室温下具有面内磁化，并且其温度升高时从面内磁化转变为垂直磁化，并且在其上记录信息的记录层。读出层的组成在垂直于其表面的方向上变化，在读出层中，光入射侧的Co密度高于读出层与记录层之间的界面上的Co密度。因此，读出层的再现光入射侧的居里温度高，再现时的极性克尔旋转角度增加，从而实现再现信号质量的改善。另一方面，由于界面的居里温度低，所以可以抑制通过层之间的磁相互作用从平面到垂直发生的阈值温度的偏移，从而实现高质量再现信号而不需要更改再生所需的激光功率。

16. 发明授权

US5486395A Magneto-optical disk 失效
标题翻译：磁光盘
公开(公告)号：US5486395A
公开(公告)日：1996-01-23
申请号：US984350
申请日：1992-12-02
申请人： Yoshiteru Murakami , Naoyasu Iketani , Akira Takahashi , Kenji Ohta
发明人： Yoshiteru Murakami , Naoyasu Iketani , Akira Takahashi , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , B32B3/02 , G11B5/66
CPC分类号： G11B11/10504 , G11B11/10515 , G11B11/10582 , G11B11/10586 , Y10S428/90
摘要： A magneto optical disk comprising: a circular substrate; a recording layer, formed on the substrate, for magneto-optical recording of information; a readout layer, formed between the substrate and the recording layer, for the reproduction of information recorded on the recording layer, wherein the readout layer has a Curie temperature which is higher than the Curie temperature of the recording layer, and exhibits in-plane magnetization at room temperature and a change from in-plane magnetization to perpendicular magnetization when its temperature rises over a certain temperature as a result of the application of a light beam, and wherein the magnetic compensation temperature is set such that it increases from the peripheral edge of the magneto-optical disk toward the center thereof. When the magneto-optical disk is used with a magneto-optical recording and reproducing device using a CAV system, it achieves high-density recording and the reproduction of signals with reduced noise, without causing the light beam control system to be complicated.
摘要翻译：一种磁光盘，包括：圆形衬底; 记录层，形成在基板上，用于磁光记录信息; 形成在基板和记录层之间的用于再现记录在记录层上的信息的读出层，其中读出层的居里温度高于记录层的居里温度，并且表现出面内磁化在室温下由于施加光束而在其温度上升超过一定温度时从面内磁化变化到垂直磁化的变化，并且其中磁补偿温度被设定为使得其从外周边缘磁光盘朝向其中心。当磁光盘与使用CAV系统的磁光记录和再现装置一起使用时，可以实现高密度记录和降低噪声的信号的再现，而不会使光束控制系统复杂化。

17. 发明授权

US5922177A Magneto-optical recording medium and producing method thereof 失效
标题翻译：磁光记录介质及其制造方法
公开(公告)号：US5922177A
公开(公告)日：1999-07-13
申请号：US112930
申请日：1998-07-09
申请人： Naoyasu Iketani , Yoshiteru Murakami , Akira Takahashi , Kenji Ohta
发明人： Naoyasu Iketani , Yoshiteru Murakami , Akira Takahashi , Kenji Ohta
IPC分类号： C23C14/18 , C23C14/34 , G11B7/26 , G11B11/105 , C23C14/00 , C23C14/32
CPC分类号： C23C14/3407 , C23C14/185 , G11B11/10582 , G11B11/10586 , G11B7/26
摘要： A method to produce a magneto-optical recording medium which includes a readout layer having in-plane magnetization at room temperature and in which a transition occurs from in-plane magnetization to a perpendicular magnetization when temperature rises, and a recording layer for storing information thereon magneto-optically. In the readout layer made of GdFeCo by adding Nd thereto, an amount of Nd to be added changes in a direction perpendicular to its film surface, and an amount of Nd is larger on a light incidence side than on the other side. As a result, even when a laser with a short wavelength is used, high density recording can be achieved as undesirable recording and reproducing operations due to a change in a magnetic interaction is prevented and also deterioration in quality of a reproducing signal is prevented.
摘要翻译：一种制造磁光记录介质的方法，其包括在室温下具有面内磁化的读出层，并且其中当温度升高时从面内磁化转变为垂直磁化，并且在其上存储信息的记录层磁光学。在通过添加Nd而由GdFeCo制成的读出层中，要添加的Nd的量在垂直于其膜表面的方向上变化，并且Nd的量在光入射侧比在另一侧更大。结果，即使使用具有短波长的激光器，由于防止了磁相互作用的变化而导致由于不期望的记录和再现操作而导致高密度记录，并且也防止再现信号的质量劣化。

18. 发明授权

US08766275B2 Composite semiconductor device 有权
标题翻译：复合半导体器件
公开(公告)号：US08766275B2
公开(公告)日：2014-07-01
申请号：US13574993
申请日：2010-12-28
申请人： Naoyasu Iketani , Tomohiro Nozawa , Yoshiaki Nozaki , John K. Twynam , Hiroshi Kawamura , Keiichi Sakuno
发明人： Naoyasu Iketani , Tomohiro Nozawa , Yoshiaki Nozaki , John K. Twynam , Hiroshi Kawamura , Keiichi Sakuno
IPC分类号： H01L31/0256
CPC分类号： H01L27/0605 , H01L27/0629
摘要： This composite semiconductor device has a normally-on first field effect transistor and a normally-off second field effect transistor connected in series between first and second terminals, gates of the first and second field effect transistors being connected to second and third terminals, respectively, and N diodes being connected in series in a forward direction between a drain and a source of the second field effect transistor. Therefore, a drain-source voltage (Vds) of the second field effect transistor can be restricted to a voltage not higher than a withstand voltage of the second field effect transistor.
摘要翻译：该复合半导体器件具有在第一和第二端子之间串联连接的常开第一场效应晶体管和常关第二场效应晶体管，第一和第二场效应晶体管的栅极分别连接到第二和第三端子，并且N个二极管在第二场效应晶体管的漏极和源极之间沿正向串联连接。因此，第二场效应晶体管的漏极 - 源极电压（Vds）可以被限制在不高于第二场效应晶体管的耐受电压的电压。

19. 发明申请

US20090106783A1 Electomagnetic field generating element, information recording/reproducing head and information recording/reproducing apparatus 有权
标题翻译：电磁场产生元件，信息记录/再现头和信息记录/重放装置
公开(公告)号：US20090106783A1
公开(公告)日：2009-04-23
申请号：US12316592
申请日：2008-12-12
申请人： Shintaro Miyanishi , Naoyasu Iketani , Kunio Kojima
发明人： Shintaro Miyanishi , Naoyasu Iketani , Kunio Kojima
IPC分类号： G11B11/00 , G11B7/08
CPC分类号： G11B11/10536 , G11B5/1278 , G11B5/314 , G11B7/1387 , G11B11/10541 , G11B11/1058 , G11B2005/0002 , G11B2005/0021
摘要： The present invention provides an electromagnetic field generating element, an information recording/reproducing head, and an information recording/reproducing apparatus. The electromagnetic field generating element makes it possible to restrain magnetic field attenuation or magnetic field delay in a high frequency recording/reproducing head for use in thermally assisted magnetic field recording/reproduction using a near field. The information recording/reproducing head and the information recording/reproducing apparatus can carry out high frequency magnetic recording/reproducing.The electromagnetic field generating element of the present invention includes: (i) a substrate, (ii) conductors each provided on the substrate and each serving as a supporting section, (iii) a plate-like-shaped conductor provided on the conductors and (iv) a semiconductor laser element provided on the substrate. The semiconductor laser element irradiated, to the plate-like-shaped conductor, laser light substantially parallel to an extending flat surface of the plate-like-shaped conductor. This causes generation of the near field in the plate-like-shaped conductor. Moreover, a magnetic field is generated by supplying a current to the plate-like-shaped conductor.
摘要翻译：本发明提供一种电磁场产生元件，信息记录/再现头和信息记录/再现装置。电磁场产生元件使得可以抑制在使用近场的热辅助磁场记录/再现中使用的高频记录/再现头中的磁场衰减或磁场延迟。信息记录/再现头和信息记录/再现装置可以执行高频磁记录/再现。本发明的电磁场产生元件包括：（i）基板，（ii）各自设置在基板上并各自用作支撑部分的导体，（iii）设置在导体上的板状导体和（ iv）设置在基板上的半导体激光元件。半导体激光元件对板状导体照射基本上平行于板状导体的延伸平坦表面的激光。这导致板状导体中的近场的产生。此外，通过向板状导体供给电流来产生磁场。

20. 发明授权

US07489597B2 Electromagnetic field generating element, information recording/reproducing head, and information recording/reproducing apparatus 有权
标题翻译：电磁场产生元件，信息记录/再现头和信息记录/再现装置
公开(公告)号：US07489597B2
公开(公告)日：2009-02-10
申请号：US11238024
申请日：2005-09-27
申请人： Shintaro Miyanishi , Naoyasu Iketani , Kunio Kojima
发明人： Shintaro Miyanishi , Naoyasu Iketani , Kunio Kojima
IPC分类号： G11B11/24 , G11B11/00
CPC分类号： G11B11/10536 , G11B5/1278 , G11B5/314 , G11B7/1387 , G11B11/10541 , G11B11/1058 , G11B2005/0002 , G11B2005/0021
摘要： An electromagnetic field generating element restrains magnetic field attenuation or magnetic field delay in a high frequency recording/reproducing head for thermally assisted magnetic field recording/reproduction using a near field. An information recording/reproducing head and an information recording/reproducing apparatus carry out high frequency magnetic recording/reproduction. The electromagnetic field generating element includes: (i) a substrate, (ii) conductors each provided on the substrate and each serving as a supporting section, (iii) a plate-like-shaped conductor provided on the conductors and (iv) a semiconductor laser element provided on the substrate. The semiconductor laser element irradiates laser light to the plate-like-shaped conductor substantially parallel to an extending flat surface of the plate-like-shaped conductor. This causes generation of a near field in the plate-like-shaped conductor. In addition, a magnetic field is generated by supplying a current to the plate-like-shaped conductor.
摘要翻译：电磁场产生元件抑制用于使用近场的热辅助磁场记录/再现的高频记录/再现头中的磁场衰减或磁场延迟。信息记录/再现头和信息记录/再现装置执行高频磁记录/再现。电磁场产生元件包括：（i）衬底，（ii）各自设置在衬底上并各自用作支撑部分的导体，（iii）设置在导体上的板状导体，以及（iv）半导体激光元件设置在基板上。半导体激光元件将激光照射到与板状导体的延伸的平坦面平行的板状导体上。这导致在板状导体中产生近场。另外，通过向板状导体供给电流来产生磁场。

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