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21. 发明授权

US07136328B2 Magneto-optical recording device capable of setting the time phase of laser pulses and magnetic fields 失效
标题翻译：能够设置激光脉冲和磁场的时间相位的磁光记录装置
公开(公告)号：US07136328B2
公开(公告)日：2006-11-14
申请号：US10419845
申请日：2003-04-22
申请人： Yasuyuki Miyaoka
发明人： Yasuyuki Miyaoka
IPC分类号： G11B11/21
CPC分类号： G11B11/1051 , G11B7/1267 , G11B11/1053 , G11B11/10595
摘要： The present invention provides a magneto-optical recording method capable of securing a sufficient phase margin, even if a recording power or medium temperature fluctuates, and obtaining a reproduction signal having a preferable quality, wherein the time phases of a laser pulse and a modulation magnetic field are set to a time phase of maximizing in which a recording power margin.
摘要翻译：本发明提供一种能够确保足够的相位裕度的磁光记录方法，即使记录功率或介质温度波动，并且获得具有优选质量的再现信号，其中激光脉冲和调制磁性的时间相位场被设定为最大化记录功率余量的时间相位。

22. 发明授权

US06716489B2 Method for annealing domain wall displacement type magneto-optical recording medium 失效
标题翻译：畴壁位移型磁光记录介质退火方法
公开(公告)号：US06716489B2
公开(公告)日：2004-04-06
申请号：US10043148
申请日：2002-01-14
申请人： Yasuyuki Miyaoka
发明人： Yasuyuki Miyaoka
IPC分类号： H01F100
CPC分类号： G11B11/10582 , G11B11/10584 , G11B11/10589 , G11B11/10593 , Y10S428/90
摘要： A manufacturing method of a domain wall displacement type magneto-optical recording medium comprises the steps of depositing a magnetic layer on a substrate to prepare a disc, and irradiating the magnetic layer with a converged light beam while applying a magnetic field and annealing the magnetic layer a converged light beam between information tracks. A domain wall displacement type magneto-optical disc comprises a domain wall displacement layer in which a domain wall displaces, a memory layer that holds a recording magnetic domain according to information, a switching layer that is provided between the domain wall displacement layer and the memory layer and has a Curie temperature lower than that of those layers, and a disconnecting area that is provided in the domain wall displacement layer and disconnects a switching connection between information tracks, wherein the polarity of a residual magnetization at a boundary between the information track and the disconnection area is oriented in a certain direction.
摘要翻译：畴壁位移型磁光记录介质的制造方法包括以下步骤：在基板上沉积磁性层以制备盘，并且在施加磁场并且使磁性层退火时用会聚光束照射磁性层信息轨道之间的会聚光束。畴壁位移型磁光盘包括域壁位移的畴壁位移层，根据信息保持记录磁畴的存储层，设置在畴壁位移层和存储器之间的开关层并且具有低于那些层的居里温度，以及设置在畴壁位移层中的断开区域，并且断开信息轨道之间的切换连接，其中在信息轨道与信息轨道之间的边界处的剩余磁化的极性断开区域朝向一定方向。

23. 发明授权

US06314061B1 Linear high density magneto-optical recording apparatus 失效
标题翻译：线性高密度磁光记录装置
公开(公告)号：US06314061B1
公开(公告)日：2001-11-06
申请号：US09428487
申请日：1999-10-28
申请人： Yasuyuki Miyaoka
发明人： Yasuyuki Miyaoka
IPC分类号： G11B1100
CPC分类号： G11B11/10515 , G11B11/10508 , G11B11/10528 , G11B11/1053 , G11B20/1426
摘要： A magneto-optical recording-reproducing process for reproducing a record mark by projecting a light beam onto a magneto-optical medium having a memory layer and a readout layer to form a heated region to transfer and enlarge in the heated region a magnetic domain in the memory layer into the readout layer comprises the steps of recording a record mark sequence in the memory layer with correction of the length of the record mark to be shorter than that of a normal interval of code reversal and with correction of the length of the no-record mark to be longer correspondingly thereto, where the magnetic domain in the direction of enlarging the magnetic domain in the readout layer is employed as the record mark, and further comprising reproducing the record mark sequence.
摘要翻译：一种用于通过将光束投射到具有存储层和读出层的磁光介质上以再现记录标记以形成加热区域以在加热区域中传输和扩大磁畴中的磁畴的磁光记录再现处理存储层进入读出层包括以下步骤：将记录标记序列记录在存储层中，其中记录标记长度的校正要短于正常的代码区间反转的长度，记录标记对应于其中，其中在读出层中扩大磁畴的方向上的磁畴用作记录标记，并且还包括再现记录标记序列。

24. 发明授权

US06246641B1 Magneto-optical recording-reproducing method and apparatus utilizing domain wall displacement 有权
标题翻译：磁光记录再现方法和利用畴壁位移的装置
公开(公告)号：US06246641B1
公开(公告)日：2001-06-12
申请号：US09162158
申请日：1998-09-29
申请人： Yasuyuki Miyaoka
发明人： Yasuyuki Miyaoka
IPC分类号： G11B1100
CPC分类号： G11B7/126 , G11B11/10515 , G11B11/10595 , G11B20/182
摘要： Disclosed herein is a magneto-optical recording-reproducing method, wherein a domain wall of a record mark is displaced on a recording medium, thereby conducting the reproduction of information, the method comprising the steps of reproducing the prescribed record signals recorded in the recording medium by plural stages of reproduction power to detect reproduction signals; differentiating the reproduction signals to detect differential signals; and determining the reproduction power on the basis of the amplitude values of the differential signals.
摘要翻译：这里公开了一种磁光记录再现方法，其中记录标记的畴壁在记录介质上移位，从而进行信息的再现，该方法包括以下步骤：再现记录在记录介质中的规定记录信号通过多级再现功率来检测再现信号; 区分再现信号以检测差分信号; 以及基于差分信号的振幅值确定再现功率。

25. 发明授权

US6069852A Magneto-optical recording-reproducing method for recording an asymmetrical magnetic domain on a magneto-optical recording medium 失效
标题翻译：用于在磁光记录介质上记录非对称磁畴的磁光记录再现方法
公开(公告)号：US6069852A
公开(公告)日：2000-05-30
申请号：US111280
申请日：1998-07-07
申请人： Yasuyuki Miyaoka , Hiroshi Yoshida
发明人： Yasuyuki Miyaoka , Hiroshi Yoshida
IPC分类号： G11B11/10 , G11B11/105 , G11B11/00
CPC分类号： G11B11/10595 , G11B11/10508 , G11B11/10515 , G11B11/10528
摘要： A method for recording information on a domain wall displacement type magneto-optical medium comprises forming a magnetic domain such that the magnetic domain is asymmetrical with regard to a center line of a land portion or a groove portion in a tangential direction of the magneto-optical medium perpendicular to a radial direction of the magneto-optical medium. A method for reproducing information recorded by the method for recording information comprises projecting a light spot a center of which light spot, is positioned in one side of the land portion or the groove portion divided by the center line of the land portion or the groove portion from the other side, in which other side a curvature center of a domain wall of the magnetic domain exists, moving the light spot along the land portion or the groove portion, and reproducing information from the magnetic domain by a change of polarization direction of reflected light of the light spot.
摘要翻译：用于在畴壁位移型磁光介质上记录信息的方法包括形成磁畴，使得磁畴相对于磁光切割方向上的脊部分或凹槽部分的中心线是不对称的介质垂直于磁光介质的径向方向。一种用于再现通过记录信息的方法记录的信息的方法，包括将光点的中心位于陆地部分的一侧或由陆地部分或凹槽部分的中心线划分的凹槽部分另一方面，存在磁畴的畴壁的曲率中心的另一侧，沿着陆部或槽部移动光点，并且通过反射的偏振方向的变化从磁畴再现信息光点的光。

26. 发明授权

US5091897A Magneto-optical recording apparatus having means for delaying an input signal for preventing bit shift 失效
标题翻译：具有用于延迟输入信号以防止位移的装置的磁光记录装置
公开(公告)号：US5091897A
公开(公告)日：1992-02-25
申请号：US670530
申请日：1991-03-18
申请人： Mitsuhiro Otokawa , Shunpei Kimura , Yasuyuki Miyaoka
发明人： Mitsuhiro Otokawa , Shunpei Kimura , Yasuyuki Miyaoka
IPC分类号： G11B11/105
CPC分类号： G11B11/10508 , G11B11/1053
摘要： An apparatus for recording an input signal on a magneto-optical recording medium. The apparatus includes an optical head for applying a light beam to the medium, a circuit for delaying the input signal by a time for preventing a bit recorded on the medium from shifting relative to the input signal, a magnetic head for applying a magnetic field modulated in conformity with the delayed signal to that portion of the medium to which the light beam is applied, and a motor for moving the medium relative to the light beam.

27. 发明授权

US07573798B2 Multi-level information reproducing method 失效
标题翻译：多级信息再现方法
公开(公告)号：US07573798B2
公开(公告)日：2009-08-11
申请号：US11435895
申请日：2006-05-18
申请人： Masakuni Yamamoto , Yasuyuki Miyaoka
发明人： Masakuni Yamamoto , Yasuyuki Miyaoka
IPC分类号： G11B5/09
CPC分类号： G11B7/005 , G11B7/24088 , G11B20/1496
摘要： A multi-level information reproducing method is provided which can increase the degree of separation between distributions of cell boundary values to thereby improve the accuracy of reproduction. Specifically, in a method of reproducing multi-level information recorded on a track of an optical information recording medium by virtually providing cells at equal intervals and by varying a width of an information pit in a track direction or an area of an information pit, a cell boundary value (a value obtained by sampling a reproduced signal when a center of a light spot is located at a boundary of cells) is corrected based on cell center values of two cells adjacent to the boundary (a value obtained by sampling a reproduced signal when the center of the light spot is located at a center of a cell), and the multi-level information is reproduced based on the corrected cell boundary value.
摘要翻译：提供了可以增加单元边界值分布之间的分离程度从而提高再现精度的多级信息再现方法。具体地，在通过以相等的间隔虚拟地提供单元并且通过改变信息凹坑的轨道方向或信息凹坑的区域的宽度来再现记录在光学信息记录介质的轨道上的多级信息的方法中，基于与边界相邻的两个单元的单元格中心值（通过对再现信号进行取样而得到的值）来校正单元格边界值（通过对光点的中心位于单元的边界时对再现信号进行采样而获得的值）当光点的中心位于单元的中心时），并且基于校正的单元边界值再现多级信息。

28. 发明授权

US07289408B2 Method and apparatus for reproducing recording mark below diffraction limit of light from optical recording medium 失效
$Method and apparatus for reproducing recording mark below diffraction limit of light from optical recording medium$
标题翻译：用于在来自光学记录介质的光的衍射极限以下再现记录标记的方法和装置
公开(公告)号：US07289408B2
公开(公告)日：2007-10-30
申请号：US10863470
申请日：2004-06-09
申请人： Yasuyuki Miyaoka
发明人： Yasuyuki Miyaoka
IPC分类号： G11B11/03
CPC分类号： G11B20/10009 , G11B11/10515 , G11B20/10046 , G11B20/10296 , G11B2220/2525
摘要： The object of the present invention is to realize reduction of the level jitter generated from a noise component at a signal saturation level or a waveform distortion in a portion except for signal polarity portions (rising edge and falling edge), and good error characteristics. In the present invention, a predetermined upper or lower limit value is set to reproduction signals, the reproduction signals are subjected to a limiter processing for correcting reproduction signals of the upper limit value or more, or the lower limit value or less to the level of the upper limit value or the lower limit value, respectively, the signal subjected to the limiter processing is subjected to a partial response equalizing (PR equalizing) processing, and PR reproduction is performed to improve the level jitter at PR detection time and the error rate at information reproduction time.
摘要翻译：本发明的目的在于实现由除了信号极性部分（上升沿和下降沿）以外的部分的信号饱和电平或波形失真产生的电平抖动的降低以及良好的误差特性。在本发明中，对再现信号设定规定的上限值或下限值，对再现信号进行限制处理，将上限值以上或下限值以下的再现信号修正为经受限幅处理的信号的上限值或下限值经受部分响应均衡（PR均衡）处理，并且执行PR再现以提高PR检测时间的电平抖动和错误率在信息再现时。

29. 发明授权

US06747919B2 Magneto-optical recording medium, and method and apparatus for producing the same 失效
标题翻译：磁光记录介质及其制造方法和装置
公开(公告)号：US06747919B2
公开(公告)日：2004-06-08
申请号：US10125659
申请日：2002-04-18
申请人： Yuuko Kawaguchi , Motoyoshi Murakami , Masahiro Birukawa , Tsutomu Shiratori , Yasuyuki Miyaoka
发明人： Yuuko Kawaguchi , Motoyoshi Murakami , Masahiro Birukawa , Tsutomu Shiratori , Yasuyuki Miyaoka
IPC分类号： G11B1100
CPC分类号： G11B11/10582 , G11B11/10515 , G11B11/10578 , G11B11/10584
摘要： By irradiating a light beam between recording tracks of the magneto-optical recording medium, the magnetic anisotropy of at least one layer selected from the group consisting of the domain wall displacement layer and the recording layer formed between the recording tracks can be made lower than that of said layers on the recording tracks, and a bias magnetic field is applied at least between recording tracks while a light beam is radiated. Because of this, initialization of a medium may be conducted simultaneously.
摘要翻译：通过在磁光记录介质的记录轨道之间照射光束，可以使从由畴壁位移层和形成在记录轨道之间的记录层组成的组中选择的至少一层的磁各向异性低于的记录轨道上的所述层，并且在辐射光束时至少在记录轨道之间施加偏置磁场。因此，可以同时进行介质的初始化。

30. 发明授权

US06249489B1 Information recording-reproducing method utilizing domain wall displacement, and magneto optical medium 有权
标题翻译：利用畴壁位移的信息记录再现方法和磁光介质
公开(公告)号：US06249489B1
公开(公告)日：2001-06-19
申请号：US09141350
申请日：1998-08-27
申请人： Eiichi Fujii , Masakuni Yamamoto , Tsutomu Shiratori , Yasuyuki Miyaoka
发明人： Eiichi Fujii , Masakuni Yamamoto , Tsutomu Shiratori , Yasuyuki Miyaoka
IPC分类号： G11B1100
CPC分类号： G11B11/10508 , G11B11/10515 , G11B11/10528 , G11B11/10586
摘要： Disclosed herein is an information recording-reproducing method, wherein a domain wall is displaced on a recording medium in which information has been recorded, thereby conducting the reproduction of the information, the method comprising, projecting a light spot on the recording medium, relatively moving the light spot and the recording medium, applying a magnetic field modulated according to the information to the site projected by the light spot to form record marks the maximum mark length of which is at most 0.15 times the spot size of the light spot and displacing the domain wall from the front to the back of the moving direction of the light spot by a temperature distribution formed on the recording medium by the light spot, and at the same time detecting the displacement of the domain wall from reflected light of the light spot, thereby detecting the record marks.
摘要翻译：这里公开了一种信息记录再现方法，其中域壁在已经记录信息的记录介质上移位，从而进行信息的再现，该方法包括：将光点投影在记录介质上，相对移动光点和记录介质，将根据该信息调制的磁场施加到由光点投射的位置，以形成其最大标记长度为光斑大小的至多0.15倍的记录标记，通过由光点在记录介质上形成的温度分布，从光斑的移动方向的前方到后方的畴壁，同时检测畴壁从光斑的反射光的位移，从而检测记录标记。

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