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1. 发明授权

US06367924B1 Thermally assisted magnetic recording medium 有权
标题翻译：热辅助磁记录介质
公开(公告)号：US06367924B1
公开(公告)日：2002-04-09
申请号：US09481304
申请日：2000-01-11
申请人： Junichi Sato , Yasushi Ogimoto , Kunio Kojima , Masaki Hamamoto , Hiroyuki Katayama , Shinzo Sawamura
发明人： Junichi Sato , Yasushi Ogimoto , Kunio Kojima , Masaki Hamamoto , Hiroyuki Katayama , Shinzo Sawamura
IPC分类号： B41J201
CPC分类号： G11B11/10584 , G11B5/72 , G11B11/10586 , G11B13/045 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021 , Y10T428/24802
摘要： The present invention provides a thermally assisted magnetic recording medium consists of a recording region for recording information including a recording layer and a carbon nitride film provided on a side from which light is incident with respect to the recording layer, wherein the recording region is locally heated using light as a heat source for magnetically recording and reproducing information.
摘要翻译：本发明提供了一种热辅助磁记录介质，由用于记录信息的记录区域组成，该记录区域包括记录层和设置在相对于记录层入射的一侧的碳氮化物膜，其中记录区域被局部加热使用光作为用于磁记录和再现信息的热源。

2. 发明授权

US06333827B1 Magnetic signal reproducing device, magnetic signal reproducing method and magnetic recording medium for high density reproduction 失效
标题翻译：磁信号再现装置，磁信号再现方法和用于高密度再现的磁记录介质
公开(公告)号：US06333827B1
公开(公告)日：2001-12-25
申请号：US09596572
申请日：2000-06-16
申请人： Masaki Hamamoto , Kunio Kojima , Hiroyuki Katayama , Shinzo Sawamura , Junichi Sato
发明人： Masaki Hamamoto , Kunio Kojima , Hiroyuki Katayama , Shinzo Sawamura , Junichi Sato
IPC分类号： G11B502
CPC分类号： G11B5/00 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： The present invention is a magnetic signal reproducing device for reproducing information from a magnetic recording medium in which a polarity of magnetization is inverted at a first temperature during temperature change. The device includes local temperature raising device for locally raising the temperature of the magnetic recording medium, and reproducing device for magnetically detecting information recorded on the magnetic recording medium. In the device, during a reproducing operation, the local temperature raising device forms an area having a lower temperature than the first temperature and an area having a higher temperature than the first temperature within an area in the magnetic recording medium, thereby reducing contribution to reproduced signal from magnetization of an area other than a reproduction target area.
摘要翻译：本发明是一种用于从磁记录介质再现信息的磁信号再现装置，其中磁化极性在温度变化时在第一温度下反转。该装置包括用于局部提高磁记录介质的温度的本地升温装置和用于磁记录在磁记录介质上的信息的再现装置。在该装置中，在再现操作期间，局部升温装置形成具有比第一温度低的温度的区域和具有比磁记录介质中的区域内的第一温度更高的温度的区域，从而减少对再现的贡献来自再生目标区域以外的区域的磁化的信号。

3. 发明授权

US06603619B1 Magnetic storage medium and heat assisted recording and reproduction method 有权
标题翻译：磁存储介质和热辅助记录和再现方法
公开(公告)号：US06603619B1
公开(公告)日：2003-08-05
申请号：US09479255
申请日：2000-01-07
申请人： Kunio Kojima , Yasushi Ogimoto , Shinzo Sawamura , Hiroyuki Katayama
发明人： Kunio Kojima , Yasushi Ogimoto , Shinzo Sawamura , Hiroyuki Katayama
IPC分类号： G11B502
CPC分类号： G11B5/74 , G11B5/64 , G11B2005/0016 , G11B2005/0018 , G11B2005/0021
摘要： A magnetic storage medium includes a magnetic storage medium that exhibits a magnetic compensation temperature specified higher than room temperature to minimize effects of heat generated by a head using magneto-resistance effect. In a heat assisted recording and reproduction method using such a magnetic storage medium, during reproduction, the S/N ratio in a reproduction signal is enhanced by optimizing the bias current applied to the head using magneto-resistance effect. A magnetic storage medium and a heat assisted recording and reproduction method using such a magnetic storage medium whereby information is magnetically recorded and reproduced by heating a read-out domain are offered that enables signal reproduction with a good S/N ratio despite possible use of a head exhibiting magneto-resistance effect.
摘要翻译：磁存储介质包括表现出高于室温的磁补偿温度的磁存储介质，以最小化使用磁阻效应的磁头所产生的热的影响。在使用这种磁存储介质的热辅助记录和再现方法中，在再现期间，通过使用磁阻效应优化施加到磁头的偏置电流来增强再现信号中的S / N比。提供使用这样的磁存储介质的磁存储介质和热辅助记录和再现方法，其中信息通过加热读出域磁记录和再现，其使得能够以良好的S / N比进行信号再现，尽管可能使用头显示磁阻效应。

4. 发明授权

US06400654B1 Magneto-optical recording and reproducing device capable of suppressing cross talk 失效
标题翻译：能够抑制串扰的磁光记录再现装置
公开(公告)号：US06400654B1
公开(公告)日：2002-06-04
申请号：US09530887
申请日：2000-07-03
申请人： Shinzo Sawamura , Hiroyuki Katayama
发明人： Shinzo Sawamura , Hiroyuki Katayama
IPC分类号： G11B1100
CPC分类号： G11B11/10532 , G11B5/00 , G11B11/10504 , G11B11/10554 , G11B11/10586 , G11B13/045 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： The present magnetic recording and reproducing device is provided with a magnetic head (5), which, during recording, applies an external magnetic field to a recording medium (6) having a recording layer made of a ferrimagnetic material, and with a laser light source, which increases the temperature of the recording medium (6) in domains (Tr1 and Tr2) which are opposite the magnetic head (5), but exclude a track to be recorded (Tr), which is a domain for recording. Consequently, a magnetic recording and reproducing device can be provided which is capable of suppressing crosstalk and realizing higher recording density than conventionally.
摘要翻译：本磁记录和再现装置设置有磁头（5），其在记录期间将外部磁场施加到具有由铁磁材料制成的记录层的记录介质（6），并且具有激光光源，这增加了与磁头（5）相对的域（Tr1和Tr2）中的记录介质（6）的温度，但是排除了用于记录的域的要记录的轨道（Tr）。因此，可以提供能够抑制串扰并实现比传统方式更高的记录密度的磁记录和再现装置。

5. 发明授权

US06500530B1 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US06500530B1
公开(公告)日：2002-12-31
申请号：US09412146
申请日：1999-10-05
申请人： Shinzo Sawamura , Hiroyuki Katayama
发明人： Shinzo Sawamura , Hiroyuki Katayama
IPC分类号： G11B566
CPC分类号： G11B5/65 , G11B5/00 , G11B5/66 , G11B5/74 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021 , Y10S428/90 , Y10T428/24942
摘要： A magnetic recording medium of the present invention comprises a first magnetic layer and a second magnetic layer each having different magnetization, coercive force, and temperature characteristics. By magnetically coupling the first and second magnetic layers to each other, gradual temperature dependence of magnetization can be realized.
摘要翻译：本发明的磁记录介质包括具有不同磁化强度，矫顽磁力和温度特性的第一磁性层和第二磁性层。通过将第一和第二磁性层彼此磁耦合，可以实现磁化的逐渐的温度依赖性。

6. 发明授权

US06483653B1 Magnetic recording medium and magnetic reproducing method 有权
标题翻译：磁记录介质和磁再现方法
公开(公告)号：US06483653B1
公开(公告)日：2002-11-19
申请号：US09441704
申请日：1999-11-16
申请人： Hiroyuki Katayama , Shinzo Sawamura
发明人： Hiroyuki Katayama , Shinzo Sawamura
IPC分类号： G11B502
CPC分类号： G11B5/64 , G11B5/65 , G11B5/66 , G11B11/10515 , G11B11/10584 , G11B11/10586 , G11B13/045 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A magnetic layer includes a first magnetic film and a second magnetic film which are coupled to each other by means of exchanged coupling of magnetic materials, and one of the magnetic films is made of a ferrimagnetic material having a magnetic compensation temperature. When information is reproduced by heating a magnetic reproducing track portion to a magnetically reproducible temperature by a light beam, the magnetization directions of the two magnetic films are opposite in a peripheral track portion having approximately room temperature, and the same in the magnetic reproducing track portion heated to the magnetically reproducible temperature. Consequently, crosstalk from the peripheral track portion is reduced, and a reproducing signal from the magnetic reproducing track portion is increased, thereby improving the S/N of the reproducing signal significantly. Consequently, it has become possible to provide a magnetic recording medium which can realize high-density recording and reproducing with less crosstalk while producing a reproducing signal with excellent S/N.
摘要翻译：磁性层包括通过磁性材料的交换耦合彼此耦合的第一磁性膜和第二磁性膜，并且一个磁性膜由具有磁补偿温度的铁氧体材料制成。当利用光束将磁再现轨迹部分加热到可磁再现的温度来再现信息时，两个磁性膜的磁化方向在具有近似室温的周边轨道部分相反，并且在磁再现轨迹部分加热至可再现的磁性温度。因此，来自周边磁道部分的串扰减少，并且来自磁再现磁道部分的再现信号增加，从而显着提高了再现信号的S / N。因此，可以提供一种可以在产生具有优异S / N的再现信号的同时实现具有较少串扰的高密度记录和再现的磁记录介质。

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