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1. 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。

2. 发明授权

US07126886B2 Magneto-optical recording medium and method for producing the same 有权
公开(公告)号：US07126886B2
公开(公告)日：2006-10-24
申请号：US10123894
申请日：2002-04-16
申请人： Motoyoshi Murakami , Masahiro Birukawa , Tsutomu Shiratori , Yasuyuki Miyaoka
发明人： Motoyoshi Murakami , Masahiro Birukawa , Tsutomu Shiratori , Yasuyuki Miyaoka
IPC分类号： G11B11/10
CPC分类号： G11B11/10582 , G11B11/10528 , G11B11/10584
摘要： According to the present invention, a light beam is radiated to an area between recording tracks while the intensity of a magnetic field from the outside to a magneto-optical recording medium is suppressed to 50 Oe or less, whereby magnetic anisotropy formed between the recording tracks is set to be lower than that of the magnetic layer on the recording tracks, and micro-domains, for example, having a diameter smaller than a half-width of a light beam for reproduction in a film surface direction are formed on recording tracks. Because of this method, the influence of a leakage magnetic field in the magneto-optical recording medium adopting a DWDD reproducing system is alleviated.

3. 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。

4. 发明授权

US09116163B2 Displacement measuring apparatus 有权
标题翻译：位移测量仪
公开(公告)号：US09116163B2
公开(公告)日：2015-08-25
申请号：US13041742
申请日：2011-03-07
申请人： Yasumichi Arimitsu , Yasuyuki Miyaoka
发明人： Yasumichi Arimitsu , Yasuyuki Miyaoka
IPC分类号： G01P3/36 , G01B11/00 , G01P3/68 , G01D5/245 , G01D5/347 , G03G15/00 , G01P3/486
CPC分类号： G01P3/68 , G01D5/2451 , G01D5/34746 , G01P3/486 , G03G15/5054 , G03G2215/0158
摘要： A displacement measuring apparatus including: a first light detector including a first emitter illuminating optically identifiable marks disposed on a moving body, and a first light receiver detecting light through the marks; a second light detector including a second emitter illuminating the marks and a second light receiver detecting light through the marks, wherein the second light detector is arranged at a predetermined interval from the first light detector in a moving direction of the moving body; an identical point detecting unit detecting a first timing at which the first and second light detector detecting an identical mark among the marks, and a second timing; a velocity calculating unit calculating a velocity of the moving body by using the first and second timing determined by the identical point detecting unit; and a time-sharing light emitting unit allowing the first and second emitter to emit the light in a time-sharing manner.
摘要翻译： 1.一种位移测量装置，包括：第一光检测器，包括第一发射器，其照射设置在移动体上的光学识别标记;以及第一光接收器，用于检测通过所述标记的光; 第二光检测器，包括照射标记的第二发射体和通过标记检测光的第二光接收器，其中所述第二光检测器沿所述移动体的移动方向以与所述第一光检测器预定的间隔布置; 相同点检测单元，检测第一和第二光检测器检测到标记之间的相同标记的第一定时和第二定时; 速度计算单元，通过使用由同一点检测单元确定的第一和第二定时来计算移动体的速度; 以及允许第一和第二发射器以分时方式发光的分时发光单元。

5. 发明授权

US07782722B2 Method of adjusting spherical aberration and focus offset and information recording/reproduction apparatus using the same 有权
标题翻译：调整球面像差和聚焦偏移的方法以及使用其的信息记录/再现装置
公开(公告)号：US07782722B2
公开(公告)日：2010-08-24
申请号：US11844124
申请日：2007-08-23
申请人： Yasuyuki Miyaoka
发明人： Yasuyuki Miyaoka
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B7/094
摘要： A method of adjusting spherical aberration correction and focus offset of a light beam. A first approximate straight line is detected indicating a first relationship between the spherical aberration correction and the focus offset according to a first evaluation index indicating a quality of cross-track signal. A second approximate straight line is detected indicating a second relationship between the spherical aberration correction and the focus offset according to a second evaluation index indicating a quality of a reproduced signal. A spherical aberration correction value and a focus offset value, to be adjusted, are determined from an intersection of the first approximate straight line and the second approximate straight line.
摘要翻译：调整光束的球面像差校正和聚焦偏移的方法。根据指示交叉轨道信号的质量的第一评估指标，检测第一近似直线，指示球面像差校正和聚焦偏移之间的第一关系。根据指示再现信号的质量的第二评价指标，检测出第二近似直线，指示球面像差校正和聚焦偏移之间的第二关系。根据第一近似直线和第二近似直线的交点确定要调整的球面像差校正值和聚焦偏移值。

6. 发明申请

US20060015797A1 Information reproducing method and information recording reproducing apparatus with maximum likelihood decoding 审中-公开
标题翻译：具有最大似然解码的信息再现方法和信息记录再现装置
公开(公告)号：US20060015797A1
公开(公告)日：2006-01-19
申请号：US11131194
申请日：2005-05-18
申请人： Yasuyuki Miyaoka
发明人： Yasuyuki Miyaoka
IPC分类号： H03M13/03
CPC分类号： G11B20/10009 , G11B20/10111 , G11B20/10296 , G11B20/10481 , G11B20/1833
摘要： To provide a regenerative signal evaluation method in which the transition of polarity of a regenerative signal, or the change of polarity in a record mark sequence, is dealt with employing an index in correlation with an error ratio of binarization result by a maximum likelihood decoding. The method comprises detecting a recording series on a state transition path having a certain Euclid distance by the maximum likelihood decoding corresponding to a change of polarity of record code in the recording series, acquiring a likelihood difference between the most probable state transition path and the secondly probable state transition path from branch of state transition paths to merge of state transition paths in the detected recording series, and conducting a statistical processing for the likelihood difference individually corresponding to the change of polarity in the recording series to evaluate the quality of reproducing signal.
摘要翻译：为了提供一种再生信号评估方法，其中再现信号的极性的转变或记录标记序列中的极性的变化通过最大似然解码采用与二值化结果的误差比相关的指数来处理。该方法包括：检测具有某一欧几里德距离的状态转换路径上的记录序列与对应于记录序列中的记录码极性变化的最大似然解码，获取最可能状态转换路径与第二次可能状态转换路径之间的似然差从状态转移路径分支到状态转移路径合并的检测记录序列的可能状态转移路径，并且对与记录序列中的极性变化分别对应的似然度差进行统计处理，以评估再现信号的质量。

7. 发明授权

US06646968B1 Magneto-optical recording apparatus and method including method for presetting optimum recording power of recording apparatus 失效
标题翻译：一种磁光记录装置及方法，其特征在于，具备预设记录装置的最佳记录功率的方法
公开(公告)号：US06646968B1
公开(公告)日：2003-11-11
申请号：US09606019
申请日：2000-06-29
申请人： Yasuyuki Miyaoka
发明人： Yasuyuki Miyaoka
IPC分类号： G11B390
CPC分类号： G11B7/1267 , G11B7/00736 , G11B11/10508 , G11B11/1051 , G11B11/10515 , G11B11/10595
摘要： Disclosed herein is a testing process for recording for presetting optimum recording power for a domain wall displacement type magneto-optical medium, the process comprising the steps of: recording a first record pattern on an Nth track on the magneto-optical medium; separately recording a second record pattern on an (N−1)th track and an (N+1)th track adjacent to both sides of the Nth track with varied recording power; reproducing the Nth track to detect a change in the pulse width of a reproduction signal; detecting recording power, at which cross writing occurs, on the basis of the detected result; and presetting optimum recording power on the basis of the recording power at which cross writing occurs.
摘要翻译：本文公开了一种记录用于域壁位移型磁光介质的最佳记录功率的测试过程，该方法包括以下步骤：在磁光介质上的第N个磁道上记录第一记录图案;分别记录第（N-1）个轨道和与第N个轨道的两侧相邻的第（N + 1）个轨道的第二记录模式，记录功率变化;再现第N个磁道以检测再现信号的脉冲宽度的变化根据检测结果检测发生交叉写入的记录功率; 并根据发生交叉写入的记录功率来选择最佳记录功率。

8. 发明授权

US5953289A Magneto-optical recording-reproducing method utilizing domain wall displacement, and apparatus therefor 失效
标题翻译：利用畴壁位移的磁光记录再现方法及其装置
公开(公告)号：US5953289A
公开(公告)日：1999-09-14
申请号：US86308
申请日：1998-05-27
申请人： Yasuyuki Miyaoka
发明人： Yasuyuki Miyaoka
IPC分类号： G11B11/10 , G11B11/105 , G11B20/10 , G11B11/00
CPC分类号： G11B11/10515 , G11B11/10595 , G11B20/10009
摘要： A method for reproducing information on a magneto-optical medium comprises causing temperature distribution on the magneto-optical medium by projection of a light beam and displacing domain walls by the temperature gradient, wherein a detected reproduction signal is corrected by subtraction therefrom of a signal derived by delaying the detected reproduction signal by a prescribed time .beta. and multiplying the delayed signal by an amplitude gain .alpha.. An apparatus for reproducing information on a magneto-optical medium with regard to the above method comprises a first circuit for generating reproduced signals from reflection of the light beam, a second circuit for generating a modified signal derived by delaying the reproduction signal by a prescribed delay time .beta. and multiplying an amplitude gain .alpha., and a third circuit for subtracting the modified signal from the reproduced signal.
摘要翻译：一种用于在磁光介质上再现信息的方法包括通过投射光束并将畴壁移位温度梯度来引起磁光介质上的温度分布，其中通过从其中减去所检测到的信号来校正检测到的再现信号通过将检测到的再现信号延迟预定时间β并将延迟的信号乘以振幅增益α。关于上述方法，用于再现关于磁光介质的信息的装置包括：用于从光束的反射产生再现信号的第一电路;产生通过将再现信号延迟预定延迟而导出的修正信号的第二电路时间β并乘以振幅增益α，以及用于从再现信号中减去修正信号的第三电路。

9. 发明授权

US07466638B2 Optical disk recording power adjustment method and optical disk apparatus adapted to operate with the same 失效
标题翻译：光盘记录功率调整方法和适于与其一起操作的光盘装置
公开(公告)号：US07466638B2
公开(公告)日：2008-12-16
申请号：US11760462
申请日：2007-06-08
申请人： Yasuyuki Miyaoka
发明人： Yasuyuki Miyaoka
IPC分类号： G11B7/00
CPC分类号： G11B7/1267
摘要： A recording power row P(i) is selected and a signal is recorded in a recording test region of an optical disk, while shifting a recording power, to detect a reproduced signal amplitude row m(i) that corresponds to the recording power row P(i). The relation of the recording power row P(i) and the row of multiplication products P(i)×m(i) is linearly approximated and the intersection of the linear approximation straight line and the recording power axis is computationally determined as recording threshold power Pthr, for at least three recording power rows Pj(i) that are centered at Pf(j) in the recording power row P(i) within a defined range. Then, the recording power Pt(j) is computed as a multiplication product of the recording threshold power Pthr(j) and a factor κ contained in the disk information, for each recording power row Pj(i). Finally, the optimum recording power Pwopt is computationally determined according to the at least three recording powers Pt(j).
摘要翻译：选择记录功率行P（i），并且在移动记录功率的同时将信号记录在光盘的记录测试区域中，以检测对应于记录功率行P的再现信号振幅行m（i）（一世）。记录功率行P（i）与乘积P（i）×m（i）的行的关系被线性近似，并且计算地将线性近似直线与记录功率轴的交点确定为记录阈值功率Pthr 对于记录功率行P（i）中以Pf（j）为中心的至少三个记录功率行Pj（i）在限定范围内。然后，对于每个记录功率行Pj（i），记录功率Pt（j）被计算为记录阈值功率Pthr（j）和包含在盘信息中的因子kappa的乘积。最后，根据至少三个记录功率Pt（j）计算确定最佳记录功率Pwopt。

10. 发明授权

US06343052B1 Magneto-optical medium having film with rounded upper corner and thickness decreasing to the side end on lands 有权
标题翻译：具有具有圆形上角的薄膜并且厚度减小到平台上的侧端的磁光介质
公开(公告)号：US06343052B1
公开(公告)日：2002-01-29
申请号：US09545193
申请日：2000-04-07
申请人： Morimi Hashimoto , Yasuyuki Miyaoka
发明人： Morimi Hashimoto , Yasuyuki Miyaoka
IPC分类号： G11B1100
CPC分类号： G11B11/10584 , G11B11/10515 , G11B11/10528 , G11B11/10582
摘要： The present invention provides a domain wall displacement-type magnetooptical recording medium effective for decreasing jitter, in which a conventional herringbone recording mark can be changed to a linear mark. The magnetooptical recording medium of the present invention includes a substrate having lands and grooves, and a magnetic layer deposited on the substrate so as to be magnetically interrupted between the lands and the grooves, wherein the magnetic film deposited on each of the lands has a section having a flat bottom, and a substantially flat top in the central portion of each of the lands, either side having a thickness decreasing in the direction to the side end.
摘要翻译：本发明提供一种有效减少抖动的畴壁位移型磁光记录介质，其中常规的人字形记录标记可以改变为线性标记。本发明的磁光记录介质包括具有焊盘和凹槽的基板，以及沉积在基板上的磁性层，以便在焊盘和沟槽之间磁性地中断，其中沉积在每个焊盘上的磁性膜片具有平坦的底部的截面，以及在每个焊盘的中心部分中的基本平坦的顶部两侧的厚度在朝向侧端的方向上减小。

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