公开(公告)号：US08064297B2

公开(公告)日：2011-11-22

申请号：US12322112

申请日：2009-01-29

申请人： Junichi Sato ,  Yoshiteru Murakami ,  Hideki Eto

发明人： Junichi Sato ,  Yoshiteru Murakami ,  Hideki Eto

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/02 ,  G11B2005/0005 ,  G11B2005/0021

摘要： An electromagnetic field generating element includes a conductor that generates near-field light when irradiated with light and generates a magnetic field when a current flows through the conductor. The electromagnetic field generating element further includes a soft magnetic body provided at a position along a dimension of the conductor, the dimension being perpendicular to (i) a direction in which the conductor faces a magnetic recording medium to which the near-field light and the magnetic field are applied and to (ii) a direction in which the current flows. The present invention thus allows for provision of an electromagnetic field generating element that allows for reduction in its power consumption in optically assisted magnetic read/write using near-field light.

摘要翻译： 电磁场产生元件包括当用光照射时产生近场光的导体，并且当电流流过导体时产生磁场。 电磁场产生元件还包括设置在沿着导体的尺寸的位置处的软磁体，其尺寸垂直于（i）导体面向磁记录介质的方向，近场光和 施加磁场并且（ii）电流流动的方向。 因此，本发明允许提供一种电磁场产生元件，其允许在使用近场光的光辅助磁读/写中降低其功耗。

公开(公告)号：US20090207702A1

公开(公告)日：2009-08-20

申请号：US12322112

申请日：2009-01-29

申请人： Junichi Sato ,  Yoshiteru Murakami ,  Hideki Eto

发明人： Junichi Sato ,  Yoshiteru Murakami ,  Hideki Eto

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/02 ,  G11B2005/0005 ,  G11B2005/0021

摘要： An electromagnetic field generating element includes a conductor that generates near-field light when irradiated with light and generates a magnetic field when a current flows through the conductor. The electromagnetic field generating element further includes a soft magnetic body provided at a position along a dimension of the conductor, the dimension being perpendicular to (i) a direction in which the conductor faces a magnetic recording medium to which the near-field light and the magnetic field are applied and to (ii) a direction in which the current flows. The present invention thus allows for provision of an electromagnetic field generating element that allows for reduction in its power consumption in optically assisted magnetic read/write using near-field light.

摘要翻译： 电磁场产生元件包括当用光照射时产生近场光的导体，并且当电流流过导体时产生磁场。 电磁场产生元件还包括设置在沿着导体的尺寸的位置处的软磁体，其尺寸垂直于（i）导体面向磁记录介质的方向，近场光和 施加磁场并且（ii）电流流动的方向。 因此，本发明允许提供一种电磁场产生元件，其允许在使用近场光的光辅助磁读/写中降低其功耗。

公开(公告)号：US08760784B2

公开(公告)日：2014-06-24

申请号：US13157646

申请日：2011-06-10

申请人： Toshihiko Sakai ,  Yoshiteru Murakami

发明人： Toshihiko Sakai ,  Yoshiteru Murakami

IPC分类号： G11B5/09

CPC分类号： G11B5/02 ,  B82Y10/00 ,  G11B5/746 ,  G11B2005/0005

摘要： Disclosed is a magnetic recording/reproduction device 2 including: a recording/reproduction head 7; and a recording/reproduction head 7 for detecting a leakage magnetic field of each of the plurality of magnetic recording cells 1 so as to reproduce information, the recording/reproduction head 7 carrying out the recording on the magnetic recording medium 4 so that the magnetic recording medium 4 includes continuous recording regions that (i) satisfy Nmin≧2 and that (ii) include a continuous recording region that satisfies N≠n×Nmin, where N represents a number of magnetic recording cells 1 in a continuous recording region; Nmin represents a minimum value for N; and n represents a positive integer, the continuous recording regions each being a region on a reproduction track in which region magnetic recording cells 1 sharing an identical magnetization direction are sequentially arranged in a circumferential direction of the magnetic recording medium 4.

摘要翻译： 公开了一种磁记录/再现装置2，包括：记录/再现头7; 以及记录/再现头7，用于检测多个磁记录单元1中的每个磁记录单元1的泄漏磁场以再现信息，记录/再现头7在磁记录介质4上执行记录，使得磁记录 介质4包括（i）满足Nmin≥2并且（ii）包括满足N≠n×Nmin的连续记录区域的连续记录区域，其中N表示连续记录区域中的磁记录单元1的数量; Nmin表示N的最小值; 并且n表示正整数，连续记录区域各自是在磁记录介质4的圆周方向上顺序地布置有共享相同磁化方向的区域磁记录单元1的再现轨道上的区域。

公开(公告)号：US08264917B2

公开(公告)日：2012-09-11

申请号：US12225597

申请日：2007-03-19

申请人： Ikuo Nakano ,  Yoshiteru Murakami

发明人： Ikuo Nakano ,  Yoshiteru Murakami

IPC分类号： G11B11/00

CPC分类号： G11B5/09 ,  G11B2005/0021

摘要： According to the present invention, heat generation amount control information for controlling a heat generation amount of a heat generating section (20) is arranged to correspond to each of temperatures so that a predetermined heat generation amount is obtained at each of the temperatures. The present invention includes a first computing section (41) that controls the heat generation amount of the heat generating section (20) according to the heat generation amount control information that is arranged in advance to correspond to temperature information that is obtained from a temperature sensor (13). This easily makes it possible to appropriately carry out at least either recording or reproduction with respect to a magnetic recording medium.

摘要翻译： 根据本发明，用于控制发热部分（20）的发热量的发热量控制信息被布置成对应于每个温度，使得在每个温度下获得预定的发热量。 本发明包括：第一计算部（41），其根据与从温度传感器获得的温度信息对应地预先配置的发热量控制信息来控制发热部（20）的发热量 （13）。 这容易使得可以适当地执行关于磁记录介质的记录或再现。

公开(公告)号：US20120207009A1

公开(公告)日：2012-08-16

申请号：US13456089

申请日：2012-04-25

申请人： Go Mori ,  Hirohisa Yamada ,  Masaki Yamamoto ,  Yasuhiro Harada ,  Hideharu Tajima ,  Shigemi Maeda ,  Yoshiteru Murakami

发明人： Go Mori ,  Hirohisa Yamada ,  Masaki Yamamoto ,  Yasuhiro Harada ,  Hideharu Tajima ,  Shigemi Maeda ,  Yoshiteru Murakami

IPC分类号： G11B7/135

CPC分类号： G11B20/18 ,  G11B7/00736 ,  G11B7/24065 ,  G11B7/252 ,  G11B7/258 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/1012 ,  G11B20/10481 ,  G11B20/1217 ,  G11B20/1426 ,  G11B2220/2541 ,  G11B2220/2579

摘要： This invention allows super-resolution reproduction with which a better bER value is attainable, when information is recorded by a random pattern including a mark length not longer than a resolution limit, by use of a highly versatile signal decoding method.Information is recorded as marks and spaces coded by RLL(1,7) modulation, which each of the marks and spaces have one of a plurality of lengths, and 2T marks and 2T spaces of the marks and spaces being formed are shorter than 0.12 μm. An information recording layer (20) includes a reproduction film (21) and a reflective film (22) which are provided in this order from a side from which reproducing light is incident, which reproduction film is made of (i) zinc oxide, (ii) strontium titanate, (iii) titanium oxide, (iv)cerium oxide, or (v) a material including at least one of the (i) through (iv), and which reflective film is made of tantalum or titanium.

摘要翻译： 通过使用高度通用的信号解码方法，当通过包括不超过分辨率极限的标记长度的随机图案记录信息时，本发明允许可获得更好的bER值的超分辨率再现。 信息被记录为通过RLL（1,7）调制编码的标记和空间，其中每个标记和间隔具有多个长度中的一个，并且形成的标记和间隔的2T标记和2T间隔短于0.12μm 。 信息记录层（20）包括从再现光入射的一侧依次设置的再现膜（21）和反射膜（22），该再生膜由（i）氧化锌（ ii）钛酸锶，（iii）氧化钛，（iv）氧化铈，或（v）包含（i）至（iv）中的至少一种的材料，并且该反射膜由钽或钛制成。

公开(公告)号：US08045294B2

公开(公告)日：2011-10-25

申请号：US12306484

申请日：2007-07-03

申请人： Tomoki Ono ,  Shintaro Miyanishi ,  Kousuke Innami ,  Yoshiteru Murakami

发明人： Tomoki Ono ,  Shintaro Miyanishi ,  Kousuke Innami ,  Yoshiteru Murakami

IPC分类号： G11B5/60

CPC分类号： G11B5/314 ,  B82Y10/00 ,  G11B5/102 ,  G11B7/1387 ,  G11B11/10534 ,  G11B11/1058 ,  G11B2005/0005 ,  G11B2005/0021

摘要： An opening (3) is formed on a surface of a metal film (2), a plurality of axes (4, 5, 6, 7) cross each other substantially perpendicularly at the opening (3), a plurality of periodic grooves (8, 9, 10, 11) are provided for respective axes (4, 5, 6, 7), and each of the periodic grooves (8, 9, 10, 11) includes a plurality of grooves (8-n, 9-n, 10-n, and 11-n) substantially perpendicular to the axis for which each periodic groove is provided, and the periodic grooves (8, 9, 10, 11) is positioned point-symmetrically with respect to the opening (3).

摘要翻译： 在金属膜（2）的表面上形成开口（3），在开口（3）处大致垂直地交叉的多个轴线（4,5,6,7），多个周期性凹槽（8） ，9,10,11）设置用于各个轴（4,5,6,7），并且每个周期性凹槽（8,9,10,11）包括多个凹槽（8-n，9-n） ，10-n和11-n），周期性槽（8,9,10,11）相对于开口（3）位于对称的位置。

公开(公告)号：US20110058460A1

公开(公告)日：2011-03-10

申请号：US12814091

申请日：2010-06-11

申请人： Masaki Yamamoto ,  Hirohisa Yamada ,  Yasuhiro Harada ,  Go Mori ,  Hideharu Tajima ,  Shigemi Maeda ,  Yoshiteru Murakami

发明人： Masaki Yamamoto ,  Hirohisa Yamada ,  Yasuhiro Harada ,  Go Mori ,  Hideharu Tajima ,  Shigemi Maeda ,  Yoshiteru Murakami

IPC分类号： G11B7/00

CPC分类号： G11B7/00 ,  G11B7/0037 ,  G11B7/005 ,  G11B7/08511 ,  G11B7/12 ,  G11B7/126 ,  G11B7/1263 ,  G11B7/24 ,  G11B7/24038 ,  G11B19/125 ,  G11B19/128 ,  G11B2007/0013

摘要： In an optical information storage medium reproduction apparatus (10) for reproducing an optical information storage medium including a plurality of information recording layers each including a recording mark having a length shorter than an optical system resolution limit, reproduction laser power for reading an information recording layer closest to a reproduction-laser-incident surface of the optical information storage medium is set to be lower than reproduction laser power for reading an information recording layer farthest from the reproduction-laser-incident surface but not lower than minimum reproduction laser power that satisfies a reproduction signal characteristic that the optical information storage medium reproduction apparatus (10) requires. With the arrangement, it is possible to prevent that the information recording layer closest to the reproduction-laser-incident surface is irradiated wrongly with reproduction laser having high reproduction laser power, thereby making it possible to obtain successful reproduction quality. That is, it is possible to realize the optical information storage medium reproduction apparatus (10) that can set optimum reproduction laser power and perform stable super resolution reproduction.

摘要翻译： 在用于再现包括多个信息记录层的光信息存储介质的光学信息存储介质再现设备（10）中，每个信息记录层包括长度短于光学系统分辨率极限的记录标记，用于读取信息记录层的再现激光功率 最靠近光学信息存储介质的再现激光入射表面被设置为低于用于读取距再生激光入射面最远的信息记录层的再生激光功率，但不低于满足 光信息存储介质再生装置（10）要求的再现信号特性。 通过这种布置，可以防止最接近再现激光入射表面的信息记录层与具有高再现激光功率的再现激光器错误地照射，从而可以获得成功的再现质量。 也就是说，可以实现能够设置最佳再现激光功率并且执行稳定的超分辨率再现的光学信息存储介质再现装置（10）。

公开(公告)号：US20100054093A1

公开(公告)日：2010-03-04

申请号：US12513110

申请日：2007-07-17

申请人： Noboru Iwata ,  Yoshiteru Murakami

发明人： Noboru Iwata ,  Yoshiteru Murakami

IPC分类号： G11B11/00

CPC分类号： G11B5/855 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/743 ,  G11B7/1387 ,  G11B11/10536 ,  G11B11/10584

摘要： A magnetic recording medium (1a) includes: a plurality of magnetic dots (13), provided on a substrate (11), in each of which information is stored by heating of the magnetic body; and separator layers (50). Each of the separator layers (50) is structured such that a metallic body layer (52) and two dielectric body layers (51) are alternately stacked in an in-plane direction of the substrate (11). Each of the separator layers (50) separates two magnetic dots from each other in the in-plane direction. Both sides of each of the magnetic dots (13) in the in-plane direction of the substrate (11) have contact with two dielectric body layers (52), respectively. This provides a magnetic recording medium (1a) whose magnetic dots (13) can be entirely heated with a reduction in the amount of power that is consumed by a recording head.

摘要翻译： 磁记录介质（1a）包括：设置在基板（11）上的多个磁点（13），每个磁点通过加热磁体而存储信息; 和隔离层（50）。 每个分隔层（50）被构造成使得金属体层（52）和两个介电体层（51）在基板（11）的面内方向上交替堆叠。 每个分隔层（50）在面内方向上分离两个磁性点。 在基板（11）的面内方向上的每个磁性点（13）的两侧分别与两个介电体层（52）接触。 这提供了一种磁记录介质（1a），其磁点（13）可以被完全加热，同时减少了由记录头消耗的功率量。

公开(公告)号：US20090219638A1

公开(公告)日：2009-09-03

申请号：US12225901

申请日：2007-03-27

申请人： Noboru Iwata ,  Shintaro Miyanishi ,  Tomoki Ono ,  Yoshiteru Murakami

发明人： Noboru Iwata ,  Shintaro Miyanishi ,  Tomoki Ono ,  Yoshiteru Murakami

IPC分类号： G11B5/02

CPC分类号： G11B5/3903 ,  G11B5/314 ,  G11B2005/0005 ,  G11B2005/0021

摘要： There are provided a magnetic layer 2, a buffer layer 3 deposited on the magnetic layer 2, and a magnetic sensing section 7 constituted by a magneto-resistive device in which a fixed magnetization layer 4, a non-magnetic layer 5, and a magnetization-free layer 6 are deposited on the buffer layer 3 in this order. Further provided are a buffer layer 8 which sandwiches the magnetic sensing section 7 with the buffer layer 3 and a biasing layer 10 which covers the right and left sides of the part constituted by the buffer layer 3, the magnetic sensing section 7, and the buffer layer 8 and which is deposited on the magnetic layer 2 with a nonconductor layer 9 being interposed therebetween. On that surface, a near field light generation section 14 is formed which is constituted by a magnetic layer 11, a dielectric layer 12, and a metal layer 13. With this, it is possible to obtain a magnetic sensor device which can efficiently perform photo-assisted reproduction of information from a magnetic recording medium, a magnetic reproduction head and a magnetic reproducer using the device, and a magnetic reproduction method of a magnetic recording medium, using the magnetic reproducer.

摘要翻译： 提供了磁性层2，沉积在磁性层2上的缓冲层3和由其中固定磁化层4，非磁性层5和磁化强度的磁阻装置构成的磁感应部分7 按顺序沉积在缓冲层3上。 还提供了缓冲层8，其将磁感测部分7与缓冲层3夹持;以及偏置层10，其覆盖由缓冲层3，磁感测部分7和缓冲器构成的部分的左右两侧 层8并且其间插入有非导体层9沉积在磁性层2上。 在该表面上，形成由磁性层11，电介质层12和金属层13构成的近场光产生部分14.由此，可以获得能够有效地执行照片的磁传感器装置 利用该磁性再现器，利用该装置从磁记录介质，磁再现头和磁性再生器辅助再现信息和磁记录介质的磁再现方法。

公开(公告)号：US06128274A

公开(公告)日：2000-10-03

申请号：US188581

申请日：1998-11-09

申请人： Go Mori ,  Michinobu Mieda ,  Naoyasu Iketani ,  Ippei Suzuki ,  Yoshiteru Murakami ,  Akira Takahashi

发明人： Go Mori ,  Michinobu Mieda ,  Naoyasu Iketani ,  Ippei Suzuki ,  Yoshiteru Murakami ,  Akira Takahashi

IPC分类号： G11B7/24 ,  G11B7/241 ,  G11B7/257 ,  G11B11/105

CPC分类号： G11B7/252 ,  G11B7/24056 ,  G11B7/24067 ,  G11B11/10584 ,  G11B2007/25706 ,  G11B2007/25708 ,  G11B2007/2571 ,  G11B2007/25713 ,  G11B2007/25715 ,  G11B2007/25718 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/2578

摘要： An optical disk of the present invention includes a transparent dielectric film formed on a light incident side of the disk on an opposite side of an optical recording film so as to sandwich the transparent substrate therebetween, for suppressing bimetallic effects caused by a difference in thermal expansion between an optical recording film formed on an optical recording surface and the transparent substrate, whereby changes in tilt against temperature changes can be suppressed. Further, by an optimal selection of a reflectance of the transparent dielectric film, unwanted reflection due to multi-interference can be reduced at the same time.

摘要翻译： 本发明的光盘包括形成在光记录膜的相对侧上的光盘入射侧的透明电介质膜，以将透明基板夹在其间，用于抑制由热膨胀差引起的双金属效应 在形成在光学记录表面上的光学记录膜与透明基板之间，由此能够抑制倾斜温度变化的变化。 此外，通过对透明电介质膜的反射率的最佳选择，可以同时减少由于多次干涉引起的不期望的反射。