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公开(公告)号：US08780678B2
公开(公告)日：2014-07-15
申请号：US13392115
申请日：2011-05-16
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： Provided is a thermal-assisted-magnetic-recording head capable of irradiating a magnetic recording medium with light with a spot size reduced on the submicron order with high utilization efficiency. A spot size converter 13 for guiding light emitted from an optical source 4 into a magnetic head is provided at a position adjacent to a magnetic main pole 19 in the magnetic head. In the spot size converter 13, a cover layer 15 having a lower refractive index than those of a core 14 and a clad material 24 is formed between the core 14 and the clad 15 and has a shape composed of a shape substantially rectangular in a light traveling direction and a taper shape having a width increasing toward the bottom surface of the magnetic head.
摘要翻译： 提供一种热辅助磁记录头，其能够以高的利用效率以亚微米级的光斑尺寸减小的光照射磁记录介质。 用于将从光源4发射的光引导到磁头中的光斑尺寸转换器13设置在与磁头中的磁性主极19相邻的位置处。 在光斑尺寸转换器13中，在芯14和包层15之间形成折射率低于芯14和包层材料24的覆盖层15，并且具有由光形成基本矩形的形状 行进方向和具有朝向磁头的底表面的宽度增加的锥形形状。
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2.发明授权公开(公告)号：US08406093B2
公开(公告)日：2013-03-26
申请号：US12903276
申请日：2010-10-13
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： Provided is a thermal-assisted-magnetic-recording head capable of directing, to a magnetic recording medium, light in which the spot size is reduced to submicron order with high total optical propagation efficiency. A light coupling unit that guides light emitted from the light source into a magnetic head and a high-refractive-index core that couples with the light guided by the light coupling unit to lead the light to an air bearing surface are arranged in the magnetic head. The light coupling unit includes a plurality of thin-film-like cores that are separated from each other by a clad material. An upper part of the high-refractive-index core is placed between two thin-film-like cores.
摘要翻译： 提供了一种热辅助磁记录头，其能够将光斑尺寸减小到亚微米级的高的总光传播效率的光记录介质。 将从光源发射的光引导到磁头中的光耦合单元和与由光耦合单元引导的光耦合以将光引导到空气轴承表面的高折射率芯布置在磁头中 。 光耦合单元包括通过包层材料彼此分离的多个薄膜状芯。 高折射率芯的上部放置在两个薄膜状芯之间。
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公开(公告)号：US08400887B2
公开(公告)日：2013-03-19
申请号：US13404024
申请日：2012-02-24
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G02B6/1228 , G11B5/6088 , G11B2005/0021
摘要： A thermally assisted recording magnetic head is provided in which a magnetic recording medium can be irradiated with light having a spot size reduced in the submicron order with high total optical propagation efficiency. In a magnetic head, a spot size converter that propagates the light from an optical source in the magnetic head is provided adjacent to a main pole. The spot size converter includes a cover layer having a refractive index lower than that of a clad material and formed in contact with the optical waveguide core, and is formed in a shape composed of a substantially rectangular shape in a light traveling direction and a tapered shape where the width is increased toward the bottom surface of the magnetic head. The optical waveguide core having the cover layer formed is vertically interposed between multi-mode-thin-film-like cores that can excite a first or higher-order optical waveguide mode.
摘要翻译： 提供了一种热辅助记录磁头，其中磁记录介质可以以具有高总光传播效率的亚微米级的光斑尺寸减小的光照射。 在磁头中，在主磁极附近设置从磁头中的光源传播光的光斑尺寸转换器。 光斑尺寸转换器包括折射率低于包覆材料并与光波导芯接触形成的覆盖层，并且形成为在光行进方向上形成为大致矩形形状的锥形形状 其中宽度朝向磁头的底表面增加。 形成有覆盖层的光波导芯垂直地插入在能够激发第一或更高阶光波导模式的多模式薄膜状芯之间。
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4.发明申请公开(公告)号：US20120182842A1
公开(公告)日：2012-07-19
申请号：US13392115
申请日：2011-05-16
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： Provided is a thermal-assisted-magnetic-recording head capable of irradiating a magnetic recording medium with light with a spot size reduced on the submicron order with high utilization efficiency. A spot size converter 13 for guiding light emitted from an optical source 4 into a magnetic head is provided at a position adjacent to a magnetic main pole 19 in the magnetic head. In the spot size converter 13, a cover layer 15 having a lower refractive index than those of a core 14 and a clad material 24 is formed between the core 14 and the clad 15 and has a shape composed of a shape substantially rectangular in a light traveling direction and a taper shape having a width increasing toward the bottom surface of the magnetic head.
摘要翻译： 提供一种热辅助磁记录头，其能够以高的利用效率以亚微米级的光斑尺寸减小的光照射磁记录介质。 用于将从光源4发射的光引导到磁头中的光斑尺寸转换器13设置在与磁头中的磁性主极19相邻的位置处。 在光斑尺寸转换器13中，在芯14和包层15之间形成折射率低于芯14和包层材料24的覆盖层15，并且具有由光形成基本矩形的形状 行进方向和具有朝向磁头的底表面的宽度增加的锥形形状。
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5.发明申请公开(公告)号：US20110090770A1
公开(公告)日：2011-04-21
申请号：US12903276
申请日：2010-10-13
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： Provided is a thermal-assisted-magnetic-recording head capable of directing, to a magnetic recording medium, light in which the spot size is reduced to submicron order with high total optical propagation efficiency. A light coupling unit that guides light emitted from the light source into a magnetic head and a high-refractive-index core that couples with the light guided by the light coupling unit to lead the light to an air bearing surface are arranged in the magnetic head. The light coupling unit includes a plurality of thin-film-like cores that are separated from each other by a clad material. An upper part of the high-refractive-index core is placed between two thin-film-like cores.
摘要翻译： 提供了一种热辅助磁记录头，其能够将光斑尺寸减小到亚微米级的高的总光传播效率的光记录介质。 将从光源发射的光引导到磁头中的光耦合单元和与由光耦合单元引导的光耦合以将光引导到空气轴承表面的高折射率芯布置在磁头中 。 光耦合单元包括通过包层材料彼此分离的多个薄膜状芯。 高折射率芯的上部放置在两个薄膜状芯之间。
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6.发明授权公开(公告)号：US08659982B2
公开(公告)日：2014-02-25
申请号：US12961571
申请日：2010-12-07
申请人： Hideharu Mikami , Harukazu Miyamoto
发明人： Hideharu Mikami , Harukazu Miyamoto
CPC分类号： G11B7/083 , G03H2001/0441 , G03H2210/562 , G11B7/00781 , G11B2007/00656
摘要： In a system of detecting an interference light with a light not irradiated onto an optical disc to increase the S/N ratio, it is difficult to stably acquire a reproduced signal with a simple configuration. Since the recording density is not improved, an improvement in transfer rate is difficult. In an optical information recording/reproducing apparatus where two optical beams face each other and are focused at the same place of a recording medium to record a standing wave developed by interference of the two optical beams, a phase difference of the two optical beams is modulated in a multiple stage and recorded. During reproduction, an interference light of a reproduced light from the recording medium and another reproduction reference light is detected as a reproduced signal, and a phase servo control stabilizing the phase of interference during reproduction by using a low frequency component of the reproduced signal is conducted.
摘要翻译： 在利用未照射到光盘上的光来检测干涉光以提高S / N比的系统中，难以以简单的结构稳定地获取再生信号。 由于记录密度没有改善，传输速率的提高是困难的。 在其中两个光束彼此面对并聚焦在记录介质的相同位置以记录由两个光束的干涉产生的驻波的光信息记录/再现装置中，两个光束的相位差被调制 在多个阶段并记录下来。 在再现期间，检测来自记录介质的再现光的干涉光和另一个再现参考光作为再现信号，并且通过使用再现信号的低频分量来进行稳定再现期间的干扰相位的相位伺服控制 。
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公开(公告)号：US08472293B2
公开(公告)日：2013-06-25
申请号：US13515654
申请日：2010-03-02
申请人： Soichiro Eto , Koichi Watanabe , Harukazu Miyamoto
发明人： Soichiro Eto , Koichi Watanabe , Harukazu Miyamoto
IPC分类号： G11B7/00
CPC分类号： G11B7/0045 , G11B7/1267 , G11B7/24038 , G11B2007/0013
摘要： In write power adjustment for an optical disc having a plurality of information storage layers, data of trial writing is varied by the influence of layers other than a target layer. It is difficult, therefore, to determine optimal write power. A modulation M[m] is obtained from a reproduction signal amplitude of a signal subjected to the trial writing performed with use of write powers Pw[m] (m being an integer) of a plurality of kinds. At least an optimum write power intercept Pint_opt is determined by fitting a relation between the Pw[m] and the M[m] by a modulation characteristic formula M=Masy×(1−(Pint−Pasy)/(Pw−Pasy)) having an asymptotic modulation Masy, a write power intercept Pint, and an asymptotic write power Pasy as parameters. Approximation accuracy by the fitting and/or quality of the trial writing signal are evaluated with use of at least the M[m], the modulation characteristic formula, and the Pint_opt. An optimum write power Pw_opt is calculated by performing a specified operation at least with use of the Pint_opt.
摘要翻译： 在具有多个信息存储层的光盘的写入功率调整中，试写的数据由目标层以外的层的影响而变化。 因此，很难确定最佳写入功率。 通过使用多种写入功率Pw [m]（m为整数）进行试写的信号的再现信号振幅，获得调制M [m]。 通过用调制特性公式M = Masy×（1-（Pint-Pasy）/（Pw-Pasy））拟合Pw [m]和M [m]之间的关系来确定至少最佳写功率截止Pint_opt 具有渐近调制Masy，写功率截取Pint，渐近写功率Pasy作为参数。 通过使用至少M [m]，调制特性公式和Pint_opt来评估试写信号的拟合和/或质量的近似精度。 至少通过使用Pint_opt执行指定的操作来计算最佳写入功率Pw_opt。
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8.发明授权Recording and reproducing data to/from a recording medium having a user data area and an information area for storing information about the recording medium 失效从具有用户数据区域的记录介质和用于存储关于记录介质的信息的信息区域记录和再现数据公开(公告)号：US08356235B2
公开(公告)日：2013-01-15
申请号：US12569124
申请日：2009-09-29
IPC分类号： H03M13/00
CPC分类号： G11B20/00768 , G11B20/1217 , G11B20/1833 , G11B20/1866 , G11B27/105 , G11B27/329 , G11B2020/1222 , G11B2020/1265 , G11B2020/1292 , G11B2020/1294 , G11B2020/1836 , G11B2220/218 , G11B2220/2562
摘要： If a large minimum data unit for recorded data is used to record a small data amount of management information, the recording time is long, and furthermore when a WO (write once) is used as the recording medium, the number of recording operations is restricted. To solve the above problems, the present invention records data in a management area in units smaller than ordinary units for recorded data to suitably record information in a limited management area and thereby efficiently use the user data area. At that time, the present invention simplifies interleave processing usually applied to ordinary recorded data, and performs the simplified interleave processing on a data structure (for data of small size) of the present invention so as to ensure the signal processing compatibility between the ordinary data and data having the data structure according to the present invention.
摘要翻译： 如果使用用于记录数据的大的最小数据单元来记录小数据量的管理信息，则记录时间长，此外当使用WO（一次写入）作为记录介质时，记录操作的数量被限制 。 为了解决上述问题，本发明以比记录数据的普通单位更小的管理区域记录数据，以适当地记录有限管理区域中的信息，从而有效地使用用户数据区域。 此时，本发明简化了通常适用于普通记录数据的交错处理，并且对本发明的数据结构（小尺寸数据）执行简化的交错处理，以确保普通数据之间的信号处理兼容性 以及具有根据本发明的数据结构的数据。
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9.发明授权公开(公告)号：US08130430B2
公开(公告)日：2012-03-06
申请号：US12325477
申请日：2008-12-01
申请人： Kevin R. Curtis , Ken E. Anderson , Friso Schlottau , Tatsuro Ide , Ken'ichi Shimada , Takeshi Shimano , Harukazu Miyamoto
发明人： Kevin R. Curtis , Ken E. Anderson , Friso Schlottau , Tatsuro Ide , Ken'ichi Shimada , Takeshi Shimano , Harukazu Miyamoto
IPC分类号： G03H1/10
CPC分类号： G06F11/1004 , G03H1/265 , G03H2223/17 , G06F9/45533 , G11B7/0065 , G11B7/00736
摘要： A monocular holographic storage device or system to provide for compact recording and/or reading of data pages in a holographic storage medium. Also provided are methods for carrying out such data storage and/or data recovery using a monocular holographic storage device or system. Further provided are articles comprising holographic storage media for recording or for reading recorded data using such devices or systems.
摘要翻译： 一种用于提供全息存储介质中数据页的紧凑记录和/或读取的单目全息存储设备或系统。 还提供了使用单眼全息存储装置或系统进行这种数据存储和/或数据恢复的方法。 还提供了包括用于记录或使用这种装置或系统读取记录数据的全息存储介质的物品。
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公开(公告)号：US08098548B2
公开(公告)日：2012-01-17
申请号：US12419421
申请日：2009-04-07
IPC分类号： G11B7/00
CPC分类号： G11B7/005 , G11B7/0956 , G11B7/1353 , G11B7/1356 , G11B7/1359 , G11B7/1367 , G11B7/1378 , G11B2007/0013
摘要： An interference type optical head and an optical disk apparatus which have a signal amplification effect and can be manufactured in sizes comparable to conventional optical heads. In an optical disk apparatus that performs signal amplification by making a light, which is used as a reference light without being irradiated on an optical disk and, interfere with reflected light from the optical disk, a corner cube prism that reflects the reference light is mounted on the same actuator as an objective lens. A movable portion adjusts the optical path length of the interfering light in accordance with the kind of optical disk being read and the recording layer being read. A wedge prism may be used for the movable portion, and a spherical aberration correction lens and an optical path length adjusting component may be moved integrally.
摘要翻译： 具有信号放大效应的干涉型光头和光盘装置，其尺寸可与常规光头相当。 在通过制造光而进行信号放大的光盘装置中，其被用作基准光而不被照射在光盘上并且干涉来自光盘的反射光，安装反射参考光的角立方棱镜 在与物镜相同的致动器上。 可移动部分根据正在读取的光盘的种类和读取的记录层来调节干涉光的光路长度。 楔形棱镜可以用于可动部分，并且球面像差校正透镜和光程长度调节部件可以一体地移动。
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