专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06847590B2 Magneto-optical recording medium including a calibration magnetic domain recorded in a predetermined pattern in a recording layer 失效
标题翻译：磁光记录介质包括以记录层中的预定图案记录的校准磁畴
公开(公告)号：US06847590B2
公开(公告)日：2005-01-25
申请号：US09931080
申请日：2001-08-17
申请人： Atsushi Yamaguchi , Naoyuki Takagi , Yoshiharu Uchihara , Satoshi Sumi , Hiroyuki Awano , Hiroshi Shirai , Hitoshi Watanabe , Norio Ohta
发明人： Atsushi Yamaguchi , Naoyuki Takagi , Yoshiharu Uchihara , Satoshi Sumi , Hiroyuki Awano , Hiroshi Shirai , Hitoshi Watanabe , Norio Ohta
IPC分类号： G11B7/007 , G11B7/013 , G11B11/105 , G11B11/00
CPC分类号： G11B11/10595 , G11B7/00736 , G11B7/24085 , G11B11/10515 , G11B11/10584
摘要： A magneto-optical recording medium which includes a reproducing layer. When a laser beam is irradiated to the magneto-optical recording medium, a magnetic domain in a recording layer is transferred, through enlargement, to a reproducing layer increased in temperature. The magneto-optical recording medium further includes a calibration area that has a calibration magnetic domain recorded in a predetermined pattern in the recording layer. In a reproducing apparatus, a laser beam of an optical head is adjusted in output depending upon a reproduced signal obtained by reproducing the calibration magnetic domain.
摘要翻译：一种磁光记录介质，包括再现层。当激光束照射到磁光记录介质时，记录层中的磁畴通过放大转移到温度升高的再生层。磁光记录介质还包括具有以记录层中的预定图案记录的校准磁畴的校准区域。在再现装置中，根据通过再现校准磁畴获得的再现信号，调节光学头的激光束的输出。

2. 发明授权

US06301199B1 Magneto-optical recording medium and recording/reproducing apparatus therefor in which recorded magnetic domains are transferred from the recording layer to the reproducing layer 失效
标题翻译：磁光记录介质及其记录/再现装置，其中记录的磁畴从记录层转移到再现层
公开(公告)号：US06301199B1
公开(公告)日：2001-10-09
申请号：US09108317
申请日：1998-07-01
申请人： Atsushi Yamaguchi , Naoyuki Takagi , Yoshiharu Uchihara , Satoshi Sumi , Hiroyuki Awano , Hiroshi Shirai , Hitoshi Watanabe , Norio Ohta
发明人： Atsushi Yamaguchi , Naoyuki Takagi , Yoshiharu Uchihara , Satoshi Sumi , Hiroyuki Awano , Hiroshi Shirai , Hitoshi Watanabe , Norio Ohta
IPC分类号： G11B1100
CPC分类号： G11B11/10584 , G11B7/00736 , G11B7/24085 , G11B11/10515 , G11B11/10595
摘要： A magneto-optical recording medium which includes a reproducing layer. When a laser beam is irradiated to the magneto-optical recording medium, a magnetic domain in a recording layer is transferred, through enlargement, to a reproducing layer increased in temperature. The magneto-optical recording medium further includes a calibration area that has a calibration magnetic domain recorded in a predetermined pattern in the recording layer. In a reproducing apparatus, a laser beam of an optical head is adjusted in output depending upon a reproduced signal obtained by reproducing the calibration magnetic domain.
摘要翻译：一种磁光记录介质，包括再现层。当激光束照射到磁光记录介质时，记录层中的磁畴通过放大转移到温度升高的再生层。磁光记录介质还包括具有以记录层中的预定图案记录的校准磁畴的校准区域。在再现装置中，根据通过再现校准磁畴获得的再现信号，调节光学头的激光束的输出。

3. 发明授权

US06424601B1 Magneto-optical recording media having an auxiliary magnetic layer 失效
标题翻译：具有辅助磁性层的磁光记录介质
公开(公告)号：US06424601B1
公开(公告)日：2002-07-23
申请号：US09142747
申请日：1998-11-16
申请人： Satoru Oonuki , Masafumi Yoshihiro , Nobuyuki Nagai , Katsusuke Shimazaki , Hiroyuki Awano , Hiroshi Shirai , Norio Ohta , Satoshi Sumi , Atsushi Yamaguchi
发明人： Satoru Oonuki , Masafumi Yoshihiro , Nobuyuki Nagai , Katsusuke Shimazaki , Hiroyuki Awano , Hiroshi Shirai , Norio Ohta , Satoshi Sumi , Atsushi Yamaguchi
IPC分类号： G11B1100
CPC分类号： G11B11/10515 , G11B7/00745 , G11B11/10508 , G11B11/10521 , G11B11/10528 , G11B11/10578 , G11B11/10584 , G11B11/10593 , G11B11/10595 , G11B27/19 , G11B27/3027
摘要： A magneto-optical recording medium 11 has, in order from the laser irradiation side, a second auxiliary magnetic film 4, first auxiliary magnetic film 5, and magneto-optical recording film 6. First and second auxiliary magnetic films 4 and 5 change from in-plane magnetization to perpendicular magnetization when their respective critical temperatures TCR1 and TCR2 are exceeded. The Curie temperatures TC0, TC1 and TC2 of the magneto-optical recording film and the first and the second auxiliary magnetic films 4, 5 and their critical temperatures TCR1 and TCR2 satisfy the relationship: room temperature
摘要翻译：磁光记录介质11从激光照射侧起依次具有第二辅助磁性膜4，第一辅助磁性膜5和磁光记录膜6.第一和第二辅助磁性膜4和5从当它们各自的临界温度TCR1和TCR2被超过时，平面磁化对垂直磁化。磁光记录膜和第一和第二辅助磁膜4,5的居里温度TC0，TC1和TC2及其临界温度TCR1和TCR2满足关系：室温

4. 发明授权

US5968678A Magneto-optical recording medium and manufacturing 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：US5968678A
公开(公告)日：1999-10-19
申请号：US689149
申请日：1996-07-30
申请人： Kenji Tanase , Atsushi Yamaguchi , Yoshihisa Suzuki , Satoshi Sumi , Yoshiharu Uchihara , Seiji Murata , Kenji Torasawa
发明人： Kenji Tanase , Atsushi Yamaguchi , Yoshihisa Suzuki , Satoshi Sumi , Yoshiharu Uchihara , Seiji Murata , Kenji Torasawa
IPC分类号： G11B11/105 , G11B5/66
CPC分类号： G11B11/1051 , G11B11/10506 , G11B11/10515 , G11B11/10586 , G11B11/10595 , Y10S428/90
摘要： In magneto-optical recording medium, on a transparent substrate of polycarbonate resin, an SiN film having the thickness of 600 to 800 .ANG. and surface roughness Rmax of at most 10 nm is formed. On the SiN film, a GdFeCo reading layer having the thickness of 800 to 1200 .ANG. with Gd content of 30 to 36 at. % and Co content of 12 to 50 at. % is formed. On the reading layer, a TbFeCo recording layer of which Co content is 10 to 16 at. % is formed. The recording layer is a perpendicular magnetization film, and the reading layer is an in-plane magnetization film. At the time of reading, the reading and recording layers are heated, and the direction of magnetization of the recording layer is transferred to the reading layer only in the prescribed heated area. Information can be read only from the transferred portion, and thus a super resolution effect is obtained. When Kerr rotation angle .theta..sub.K is measured for the light reflected from the reading layer while the temperatures of the reading and recording layers are elevated, .theta..sub.K is approximately in proportion to Cth power of the elevated temperature t, wherein C is at least 8.0.
摘要翻译：在磁光记录介质中，在聚碳酸酯树脂的透明基板上形成厚度为600〜800的SiN膜，表面粗糙度Rmax为10nm以下。在SiN膜上，具有800〜1200厚度的GdFeCo读取层，Gd含量为30〜36at。％，Co含量为12〜50。％形成了。在读取层上，Co含量为10〜16at的TbFeCo记录层。％形成了。记录层是垂直磁化膜，读取层是面内磁化膜。在读取时，读取和记录层被加热，并且仅在规定的加热区域中记录层的磁化方向被转移到读取层。信息只能从传送部分读取，从而获得超分辨率效果。当读取层和记录层的温度升高时，对于从读取层反射的光测量克尔旋转角θK时，θK与升高温度t的Cth功率大致成比例，其中C至少为8.0。

5. 发明授权

US06243326B1 Recording and reproduction device for a magneto-optic recording medium capable of recording information according to optical super-resolution 失效
标题翻译：能够根据光学超分辨率记录信息的磁光记录介质的记录和再现装置
公开(公告)号：US06243326B1
公开(公告)日：2001-06-05
申请号：US09101800
申请日：1998-10-19
申请人： Satoshi Sumi , Yoshihisa Suzuki , Atsushi Yamaguchi , Kenji Tanase , Yoshiharu Uchihara , Kenji Torazawa , Seiji Murata
发明人： Satoshi Sumi , Yoshihisa Suzuki , Atsushi Yamaguchi , Kenji Tanase , Yoshiharu Uchihara , Kenji Torazawa , Seiji Murata
IPC分类号： G11B1100
CPC分类号： G11B11/1051 , G11B11/10508 , G11B11/10515 , G11B11/10543 , G11B11/10586
摘要： A magneto-optic disk and a recording/reproduction device therefor adopt optical super-resolution to increase recording capacity. More specifically, the magneto-optic disk has an heat emitting layer (6) on a recording layer (4) and still preferably has an intermediate layer (8) between a reproduction layer (3) and the recording layer (4). The recording/reproduction device includes a circuit (33) for pulsing a laser beam to be radiated to the magneto-optic disk and still preferably includes a polarization rotating unit (50) and a polarizing filter (51) for blocking only the center of the laser beam in reproduction. The heat emitting layer (6) diffusing any heat generated by the laser beam, and the discontinuously radiated laser beam allow small recording domain. The laser beam having its center blocked forms smaller main lobe due to diffraction effect.
摘要翻译：磁光盘及其记录/再现装置采用光学超分辨率来增加记录容量。更具体地，磁光盘在记录层（4）上具有发热层（6），并且还优选地在再现层（3）和记录层（4）之间具有中间层（8）。记录/再现装置包括用于脉冲激光束以辐射到磁光盘的电路（33），并且还优选地包括偏振旋转单元（50）和偏振滤光器（51），用于仅阻挡激光束在再现。发热层（6）扩散由激光束产生的热量，不连续辐射的激光束允许小的记录域。具有中心阻挡的激光束由于衍射效应而形成较小的主瓣。

6. 发明授权

US06650599B2 Method and apparatus for determining power level of laser beam in magneto-optical recording device 有权
标题翻译：用于确定磁光记录装置中的激光束功率电平的方法和装置
公开(公告)号：US06650599B2
公开(公告)日：2003-11-18
申请号：US09922836
申请日：2001-08-07
申请人： Naoyuki Takagi , Atsushi Yamaguchi , Kenichiro Mitani
发明人： Naoyuki Takagi , Atsushi Yamaguchi , Kenichiro Mitani
IPC分类号： G11B1100
CPC分类号： G11B7/126 , G11B11/10515 , G11B11/10595
摘要： A reproducing apparatus reproduces a signal recorded in a magneto-optical disk. The magneto-optical disk includes a layered structure having a recording layer, an intermediate layer and a reproducing layer. Laser light is illuminated from an optical head to the magneto-optical disk in such an intensity that no magnetic domain is transferred from the recording layer to the reproducing layer only by the laser light. In this state, alternating magnetic field is applied through a magnetic head to the magneto-optical disk, thereby concurrently causing transfer and expansion of a magnetic domain to the reproducing layer. As a result, transfer of the magnetic domain is effected with expansion.
摘要翻译：再现装置再现记录在磁光盘中的信号。磁光盘包括具有记录层，中间层和再现层的分层结构。激光从光头照射到磁 - 光盘，其强度使得只有通过激光将磁畴从记录层转移到再现层。在这种状态下，通过磁头向磁光盘施加交变磁场，从而同时引起磁畴向再现层的转移和扩展。结果，扩大了磁畴的转移。

7. 发明授权

US06697304B2 Method and apparatus for recording with a magneto-optical recording medium 有权
标题翻译：用磁光记录介质记录的方法和装置
公开(公告)号：US06697304B2
公开(公告)日：2004-02-24
申请号：US10247691
申请日：2002-09-20
申请人： Atsushi Yamaguchi , Naoyuki Takagi
发明人： Atsushi Yamaguchi , Naoyuki Takagi
IPC分类号： G11B1100
CPC分类号： G11B11/10528 , G11B11/10513 , G11B11/10515 , G11B20/1426
摘要： A magneto-optical recording medium includes a recording layer and a reproducing layer respectively formed by magnetic layers on a substrate. A record magnetic domain is formed within the recording layer by using a magnetic head, which is transferred into a reproducing layer by irradiating a laser beam upon reproduction. The physical length in recording a unit bit is taken as a unit domain length. Where the unit domain length is 1T and “1” is recorded in 1T, “1” is recorded in a former half 1T/2 and “0” is in a latter half 1T/2 by applying one period of an alternating magnetic field to the unit domain length.
摘要翻译：磁光记录介质包括分别由衬底上的磁性层形成的记录层和再现层。通过使用磁头在记录层内形成记录磁畴，磁头通过在再现时照射激光而被转印到再现层中。记录单位位的物理长度作为单位域长度。在单位域长度为1T且在1T中记录为“1”的情况下，在前半部1T / 2中记录“1”，在后半部1T / 2中记录“0”，通过将一个交变磁场周期单位域长度。

8. 发明授权

US06388955B1 Reproducing method for magneto-optic recording medium, and magneto-optic disk device 失效
标题翻译：磁光记录介质的再现方法和磁光盘装置
公开(公告)号：US06388955B1
公开(公告)日：2002-05-14
申请号：US09381498
申请日：1999-09-22
申请人： Naoyuki Takagi , Atsushi Yamaguchi , Kenichiro Mitani
发明人： Naoyuki Takagi , Atsushi Yamaguchi , Kenichiro Mitani
IPC分类号： G11B1100
CPC分类号： G11B7/126 , G11B11/10515 , G11B11/10595
摘要： A reproducing apparatus reproduces a signal recorded in a magneto-optical disk. The magneto-optical disk includes a layered structure having a recording layer, an intermediate layer and a reproducing layer. Laser light is illuminated from an optical head to the magneto-optical disk in such an intensity that no magnetic domain is transferred from the recording layer to the reproducing layer only by the laser light. In this state, alternating magnetic field is applied through a magnetic head to the magneto-optical disk, thereby concurrently causing transfer and expansion of a magnetic domain to the reproducing layer. As a result, transfer of the magnetic domain is effected with expansion.
摘要翻译：再现装置再现记录在磁光盘中的信号。磁光盘包括具有记录层，中间层和再现层的分层结构。激光从光头照射到磁 - 光盘，其强度使得只有通过激光将磁畴从记录层转移到再现层。在这种状态下，通过磁头向磁光盘施加交变磁场，从而同时引起磁畴向再现层的转移和扩展。结果，扩大了磁畴的转移。

9. 发明授权

US06295253B1 Magnetooptical disk unit capable of recording or reproducing signals having different domain lengths under the same conditions, signal recording method and signal reproducing method 失效
标题翻译：能够在相同条件下记录或再现具有不同域长度的信号的磁光盘单元，信号记录方法和信号再现方法
公开(公告)号：US06295253B1
公开(公告)日：2001-09-25
申请号：US09666549
申请日：2000-09-21
申请人： Kenichiro Mitani , Naoyuki Takagi , Hitoshi Noguchi , Atsushi Yamaguchi , Hiroki Ishida
发明人： Kenichiro Mitani , Naoyuki Takagi , Hitoshi Noguchi , Atsushi Yamaguchi , Hiroki Ishida
IPC分类号： G11B1100
CPC分类号： G11B20/10 , G11B11/1051 , G11B11/10515 , G11B11/10534 , G11B11/1055 , G11B27/19 , G11B27/24 , G11B2220/2525
摘要： When recording a recorded signal consisting of “01011001110” in a magnetooptical recording medium, (1,1) corresponding to a domain of 2T is converted to (1,0,1), and (0,0) is converted to (0,1,0) in the recorded signal. In other words, the first “1” of (1,1) is converted to unit bits “1,0” and the first “0” of (0,0) is converted to unit bits “0,1”. Similarly, the first “1” of (1,1,1) corresponding to a domain of 3T is converted to unit bits “1,0”, and the second “1” is converted to unit bits “1,0”. “1” or “0” of the final unit bit is not converted but recorded as such. Consequently, a signal can be correctly reproduced by extension ally transferring domains having different domain lengths from a recording layer to a reproducing layer under the same reproducing conditions.
摘要翻译：当在磁光记录介质中记录由“01011001110”组成的记录信号时，对应于2T的域的（1,1）被转换为（1,0,1），（0,0）被转换为（0， 1,0）记录信号。换句话说，（1,1）的第一个“1”被转换为单位比特“1,0”，（0,0）的第一个“0”被转换为单位比特“0,1”。类似地，对应于3T的域的（1,1,1）的第一“1”被转换为单位比特“1,0”，第二“1”被转换为单位比特“1,0”。最终单位位的“1”或“0”不转换而是被记录。因此，通过在相同的再现条件下将具有不同域长度的域从记录层延伸到再现层，可以正确地再现信号。

10. 发明授权

US06501707B1 Method and apparatus for recording with a magneto-optical recording medium applying one period of an alternating magnetic field to a unit domain length 失效
标题翻译：用磁光记录介质进行记录的方法和装置，其将一个交变磁场的周期应用于单位域长度
公开(公告)号：US06501707B1
公开(公告)日：2002-12-31
申请号：US09233917
申请日：1999-01-21
申请人： Atsushi Yamaguchi , Naoyuki Takagi
发明人： Atsushi Yamaguchi , Naoyuki Takagi
IPC分类号： G11B1100
CPC分类号： G11B11/10528 , G11B11/10513 , G11B11/10515 , G11B20/1426
摘要： A magneto-optical recording medium includes a recording layer and a reproducing layer respectively formed by magnetic layers on a substrate. A record magnetic domain is formed within the recording layer by using a magnetic head, which is transferred into a reproducing layer by irradiating a laser beam upon reproduction. The physical length in recording a unit bit is taken as a unit domain length. Where the unit domain length is 1T and “1” is recorded in 1T, “1” is recorded in a former half 1T/2 and “0” is in a latter half 1T/2 by applying one period of an alternating magnetic field to the unit domain length.
摘要翻译：磁光记录介质包括分别由衬底上的磁性层形成的记录层和再现层。通过使用磁头在记录层内形成记录磁畴，磁头通过在再现时照射激光而被转印到再现层中。记录单位位的物理长度作为单位域长度。在单位域长度为1T且在1T中记录为“1”的情况下，在前半部1T / 2中记录“1”，在后半部1T / 2中记录“0”，通过将一个交变磁场周期单位域长度。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式