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1. 发明授权

US06765847B2 Optical disk and method of magnetically separating tracks of the optical disk 失效
标题翻译：光盘和磁光分离光盘的方法
公开(公告)号：US06765847B2
公开(公告)日：2004-07-20
申请号：US10125742
申请日：2002-04-18
申请人： Masahiro Birukawa , Yasumori Hino , Yasushi Hozumi , Tomoyuki Hiroki
发明人： Masahiro Birukawa , Yasumori Hino , Yasushi Hozumi , Tomoyuki Hiroki
IPC分类号： G11B1100
CPC分类号： G11B11/10582 , G11B11/10578 , G11B11/10584
摘要： On a disk-shaped substrate with pits and grooves, a first dielectric layer, a magnetic layer, and a second dielectric layer are formed. A data region used for recording/reproduction includes a plurality of tracks, and is divided into a plurality of segments. Each segment includes a pit region and a groove region. Recording/reproducing tracks are composed of the grooves. Magnetic anisotropy of a magnetic layer positioned on each of lands between the respective recording/reproducing tracks is reduced to a level lower than that of magnetic anisotropy of the magnetic layers positioned on the grooves, so that the recording/reproducing tracks are magnetically separated. On an inner side of an innermost recording/reproducing track and on an outer side of an outermost recording/reproducing track, at least one dummy track is provided, respectively.
摘要翻译：在具有凹坑和凹槽的盘状基板上形成第一介电层，磁性层和第二介质层。用于记录/再现的数据区包括多个轨道，并被分成多个段。每个段包括凹坑区和凹槽区。记录/再现轨道由凹槽组成。位于相应的记录/再现轨道之间的每个区域上的磁性层的磁各向异性被降低到低于定位在凹槽上的磁性层的磁各向异性的水平，使得记录/再现轨迹被磁分离。在最内记录/再现轨迹的内侧和最外侧记录/重放轨道的外侧上分别设置至少一个虚拟轨迹。

2. 发明授权

US06399227B1 Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US06399227B1
公开(公告)日：2002-06-04
申请号：US08160976
申请日：1993-11-30
申请人： Yoshihiko Kudoh , Yasumori Hino , Yuuichi Fukamachi , Masahiro Birukawa
发明人： Yoshihiko Kudoh , Yasumori Hino , Yuuichi Fukamachi , Masahiro Birukawa
IPC分类号： B32B1518
CPC分类号： G11B11/10591 , G11B11/10523 , G11B11/10584 , Y10T428/1143 , Y10T428/12646 , Y10T428/12861 , Y10T428/12931 , Y10T428/24942 , Y10T428/265
摘要： A magneto-optical recording medium including a recording layer for recording information and a substrate for supporting the recording layer is disclosed. The recording layer includes: a recording magnetic film for recording the information, the recording magnetic film being formed of a perpendicular magnetic anisotropy film; a readout magnetic film for optically reading out the information, the readout magnetic film being capable of being magnetically coupled with the recording magnetic film by an exchange-coupling force; and a controlling magnetic film, provided between the recording magnetic film and the readout magnetic film, for controlling the exchange-coupling force. The controlling magnetic film has in-plane magnetic anisotropy at room temperature, thereby suppressing the exchange-coupling force between the recording magnetic film and the readout magnetic film, and when the temperature of the controlling magnetic film reaches a predetermined temperature by a readout light irradiation, the controlling magnetic film stops the suppression of the exchange-coupling force, whereby the information recorded in the recording magnetic film is magnetically transferred to the readout magnetic film.
摘要翻译：公开了包括用于记录信息的记录层和用于支撑记录层的基板的磁光记录介质。记录层包括：用于记录信息的记录磁性膜，记录磁性膜由垂直磁各向异性膜形成; 用于光学读出信息的读出磁膜，读出磁膜能够通过交换耦合力与记录磁性膜磁耦合; 以及设置在记录磁性膜和读出磁性膜之间的用于控制交换耦合力的控制磁性膜。控制磁性膜在室温下具有面内的磁各向异性，从而抑制记录磁性膜与读出的磁性膜之间的交换耦合力，并且当控制磁性膜的温度通过读出光照射达到预定温度时控制磁膜阻止了交换耦合力的抑制，由此记录在记录磁膜中的信息被磁性地传送到读出的磁性膜。

3. 发明授权

US5821004A Magneto-optical recording medium and recording and reading out process using the same 失效
标题翻译：磁光记录介质和使用其的记录和读出过程
公开(公告)号：US5821004A
公开(公告)日：1998-10-13
申请号：US983128
申请日：1992-11-30
申请人： Yasumori Hino , Yoshihiko Kudoh , Masahiro Birukawa , Norio Miyatake
发明人： Yasumori Hino , Yoshihiko Kudoh , Masahiro Birukawa , Norio Miyatake
IPC分类号： G11B11/105 , G11B5/66
CPC分类号： G11B11/10593 , G11B11/10584 , Y10S428/90
摘要： A magneto-optical recording medium having a recording layer which has a first magnetic film, a second magnetic film and a third magnetic film in this order from a laser beam incident side, in which the second magnetic film has a perpendicular anisotropy in a temperature range from room temperature to a Curie temperature, the first magnetic film has an in-plane anisotropy when there is no temperature increase by the irradiation of a laser beam or a perpendicular anisotropy when the temperature is raised by the irradiation of the laser beam, and an exchange coupled force is present between the first magnetic film and the second magnetic film.
摘要翻译：一种具有记录层的磁光记录介质，其具有从激光束入射侧开始依次具有第一磁性膜，第二磁性膜和第三磁性膜，其中第二磁性膜在温度范围内具有垂直各向异性从室温到居里温度时，当通过激光束的照射升高温度时，通过激光束的照射或垂直各向异性不存在温度升高时，第一磁性膜具有面内各向异性，并且交换耦合力存在于第一磁性膜和第二磁性膜之间。

4. 发明授权

US5724338A Rewritable disk-shaped optical recording medium 失效
标题翻译：可重写盘形光学记录介质
公开(公告)号：US5724338A
公开(公告)日：1998-03-03
申请号：US712804
申请日：1996-09-13
申请人： Masahiro Birukawa , Norio Miyatake , Yuuichi Fukamachi , Yoshihiko Kudoh , Yasumori Hino
发明人： Masahiro Birukawa , Norio Miyatake , Yuuichi Fukamachi , Yoshihiko Kudoh , Yasumori Hino
IPC分类号： G11B11/10 , G11B7/007 , G11B7/24 , G11B7/26 , G11B11/105 , G11B20/12 , G11B27/19 , G11B27/30
CPC分类号： G11B11/10584 , G11B11/10515 , G11B11/10563 , G11B11/10578 , G11B20/1217 , G11B27/19 , G11B27/3027 , G11B7/00718 , G11B7/00745 , G11B7/261
摘要： A magneto-optical recording medium includes at least a reading layer and a writing layer on a substrate. A track guide groove is formed in the medium so as to include in-groove portions and on-land portions. Only a portion where a temperature has been raised by optical beam irradiation is read, while a domain of a writing layer is copied on the writing layer, whereby a writing/reading operation can be effected with narrower track pitches. By this arrangement, there can be realized a narrow track pitch which is narrower than the diameter of a laser beam.
摘要翻译：磁光记录介质至少包括读取层和衬底上的书写层。在介质中形成轨道导向槽，以便包括槽内部分和陆上部分。只读取通过光束照射而升高了温度的部分，同时在写入层上复制写入层的区域，从而能够以更窄的轨道间距进行写入/读取操作。通过这种布置，可以实现比激光束的直径窄的窄轨道间距。

5. 发明授权

US06521357B1 Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US06521357B1
公开(公告)日：2003-02-18
申请号：US09612896
申请日：2000-07-10
申请人： Yoshihiko Kudoh , Yasumori Hino , Yuuichi Fukamachi , Masahiro Birukawa
发明人： Yoshihiko Kudoh , Yasumori Hino , Yuuichi Fukamachi , Masahiro Birukawa
IPC分类号： G11B11105
CPC分类号： G11B11/10591 , G11B11/10523 , G11B11/10584 , Y10T428/1143 , Y10T428/12646 , Y10T428/12861 , Y10T428/12931 , Y10T428/24942 , Y10T428/265
摘要： A magneto-optical recording medium including a recording layer for recording information and a substrate for supporting the recording layer is disclosed. The recording layer includes: a recording magnetic film for recording the information, the recording magnetic film being formed of a perpendicular magnetic anisotropy film; a readout magnetic film for optically reading out the information, the readout magnetic film being capable of being magnetically coupled with the recording magnetic film by an exchange-coupling force; and a controlling magnetic film, provided between the recording magnetic film and the readout magnetic film, for controlling the exchange-coupling force. The controlling magnetic film has in-plane magnetic anisotropy at room temperature.
摘要翻译：公开了包括用于记录信息的记录层和用于支撑记录层的基板的磁光记录介质。记录层包括：用于记录信息的记录磁性膜，记录磁性膜由垂直磁各向异性膜形成; 用于光学读出信息的读出磁膜，读出磁膜能够通过交换耦合力与记录磁性膜磁耦合; 以及设置在记录磁性膜和读出磁性膜之间的用于控制交换耦合力的控制磁性膜。控制磁性膜在室温下具有面内磁各向异性。

6. 发明授权

US5986977A 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：US5986977A
公开(公告)日：1999-11-16
申请号：US883549
申请日：1997-06-26
申请人： Masahiro Birukawa , Yasumori Hino , Norio Miyatake
发明人： Masahiro Birukawa , Yasumori Hino , Norio Miyatake
IPC分类号： G11B11/10 , G11B5/596 , G11B11/105 , G11B11/00
CPC分类号： G11B11/10515 , G11B11/10508 , G11B11/10513 , G11B11/10523 , G11B11/10573 , G11B11/10595 , G11B5/59677
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。

7. 发明授权

US06178151B1 Optical head having a reproducing optical system and filter formed by light passing therethrough 失效
标题翻译：具有再现光学系统的光头和通过光的光形成的滤光片
公开(公告)号：US06178151B1
公开(公告)日：2001-01-23
申请号：US09057887
申请日：1998-04-09
申请人： Yasumori Hino , Norio Miyatake , Masahiro Birukawa , Tadashi Nakamura
发明人： Yasumori Hino , Norio Miyatake , Masahiro Birukawa , Tadashi Nakamura
IPC分类号： G11B700
CPC分类号： G11B7/1381 , G11B7/22 , G11B11/10543
摘要： An optical head includes: a light source; a photodetector for generating a prescribed signal based on light which the photodetector receives; a converging optical system for converging a light beam emitted from the light source to be incident upon a prescribed reflective member; and a reproducing optical system for guiding reflected light from the prescribed reflective member to the photodetector. The reproducing optical system is configured for converging light on a prescribed converging point, and a filter having a light transmissive region for allowing light in the vicinity of a center of the converged light to selectively pass therethrough is provided in the vicinity of the converging point. The light transmissive region of the filter is formed by light which has passed through at least a part of the reproducing optical system and has been converged.
摘要翻译：光头包括：光源; 用于根据光电检测器接收的光产生规定信号的光电检测器; 会聚光学系统，用于会聚从光源发射的光束入射到规定的反射构件上; 以及用于将来自规定反射构件的反射光引导到光电检测器的再现光学系统。再现光学系统被配置为将光聚焦在规定的会聚点上，并且在会聚点附近设置具有用于允许会聚光中心附近的光选择性地通过的透光区域的滤光器。滤光器的透光区域由已经通过再现光学系统的至少一部分并且已经会聚的光形成。

8. 发明授权

US5748592A Disk drive apparatus and disk storage medium for high density recording 失效
标题翻译：用于高密度记录的磁盘驱动装置和磁盘存储介质
公开(公告)号：US5748592A
公开(公告)日：1998-05-05
申请号：US794816
申请日：1997-02-04
申请人： Yasumori Hino , Norio Miyatake , Masahiro Birukawa , Tadashi Nakamura
发明人： Yasumori Hino , Norio Miyatake , Masahiro Birukawa , Tadashi Nakamura
IPC分类号： G11B7/0045 , G11B7/005 , G11B7/14 , G11B20/10 , G11B7/00
CPC分类号： G11B7/005 , G11B20/10009 , G11B7/0045 , G11B7/14
摘要： A disk drive apparatus is provided that can reproduce data at low bit error rate even if a crosstalk is large. This apparatus comprises means for writing three or more different states of record marks in a read track and adjacent tracks thereof on a disk storage medium, means for detecting read levels of the record marks in the read track, means for calculating every possible read level regarding every possible combination of the record marks in the read track and adjacent tracks thereof according to the detected read levels, and means for performing most-liklihood decoding of written data in accordance with the possible read levels as reference levels.
摘要翻译：提供了一种磁盘驱动装置，即使串扰较大，也可以以低误码率再现数据。该装置包括用于在磁盘存储介质上的读磁道和其相邻轨道中写入三个或更多个不同状态的记录标记的装置，用于检测读磁道中的记录标记的读取电平的装置，用于计算关于根据检测到的读取电平，读取磁道和相邻轨道中的记录标记的每个可能的组合，以及用于根据可能的读取电平作为参考电平执行写入数据的最可能解码的装置。

9. 发明授权

US06307819B1 Method of reading magneto-optical recording medium 失效
标题翻译：读取磁光记录介质的方法
公开(公告)号：US06307819B1
公开(公告)日：2001-10-23
申请号：US09420685
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。

10. 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。

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