公开(公告)号：US20170062017A1

公开(公告)日：2017-03-02

申请号：US15244559

申请日：2016-08-23

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Katsuya SUGAWARA ,  Kenichiro Yamada

IPC: G11B27/36

CPC classification number: G11B27/36 ,  G11B20/10009 ,  G11B20/18 ,  G11B20/182 ,  G11B2020/1087

Abstract: According to one embodiment, a magnetic recording and reproducing device includes a magnetic recording medium including a plurality of recording tracks, a magnetic head, and a controller. The plurality of recording tracks includes a first track. The controller causes the magnetic head to implement a first recording operation of recording first information in at least two of a plurality of first track recording components included in the first track. The controller causes the magnetic head to implement a first reproduction operation of reproducing the first information from a first information reproducing/recording component of one of the at least two of the plurality of first track recording components.

Abstract translation: 根据一个实施例，磁记录和再现装置包括包括多个记录轨道的磁记录介质，磁头和控制器。 多个记录轨道包括第一轨道。 控制器使得磁头实现在包括在第一轨道中的多个第一轨道记录部件中的至少两个中记录第一信息的第一记录操作。 控制器使得磁头实现从多个第一轨道记录部件中的至少两个之一的第一信息再现/记录部件再现第一信息的第一再现操作。

公开(公告)号：US09548079B2

公开(公告)日：2017-01-17

申请号：US14922540

申请日：2015-10-26

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Katsuya Sugawara ,  Tomoyuki Maeda ,  Kenichiro Yamada

IPC: G11B5/02 ,  G11B5/09 ,  G11B20/12

CPC classification number: G11B20/1217 ,  G11B5/012 ,  G11B5/1278 ,  G11B5/746 ,  G11B2020/1238 ,  G11B2020/1292

Abstract: According to one embodiment, a magnetic recording and reproducing device includes a magnetic recording medium, a recording unit and a reproducing unit. The magnetic recording medium includes a first track and a second track, the first track extending in a first direction, the second track extending in the first direction and being arranged with the first track in a second direction intersecting the first direction. The first track includes first and second sub-tracks extending in the first direction. The second track includes third and fourth sub-tracks extending in the first direction. The second sub-track is disposed between the first and fourth sub-tracks. The third sub-track is disposed between the second and fourth sub-tracks. The recording unit records information in the first and second tracks. The reproducing unit reproduces first information recorded in the first track. The reproducing unit reproduces second information recorded in the second track.

Abstract translation: 根据一个实施例，磁记录和再现装置包括磁记录介质，记录单元和再现单元。 磁记录介质包括第一轨道和第二轨道，第一轨道沿第一方向延伸，第二轨道在第一方向上延伸，并且与沿第一方向相交的第二方向布置有第一轨道。 第一轨道包括沿第一方向延伸的第一和第二子轨道。 第二轨道包括沿第一方向延伸的第三和第四子轨道。 第二子轨道设置在第一和第四子轨道之间。 第三子轨道设置在第二和第四子轨道之间。 记录单元将信息记录在第一和第二轨道中。 再现单元再现记录在第一轨道中的第一信息。 再现单元再现记录在第二轨道中的第二信息。

公开(公告)号：US20160314809A1

公开(公告)日：2016-10-27

申请号：US14797599

申请日：2015-07-13

Applicant: Kabushiki Kaisha Toshiba

Inventor： Tomoko Taguchi ,  Yusuke Tomoda ,  Kenichiro Yamada ,  Satoshi Shirotori ,  Naoyuki Narita

IPC: G11B5/60 ,  G11B5/39 ,  G11B5/127

CPC classification number: G11B5/314 ,  G11B5/1278 ,  G11B2005/0024

Abstract: According to one embodiment, a magnetic recording head includes an air bearing surface, a magnetic pole having a distal end portion, a write shield opposed to the distal end portion of the magnetic pole across a write gap, and a high-frequency oscillator between the magnetic pole and the write shield in the write gap. The high-frequency oscillator includes a spin injection layer, an intermediate layer and an oscillation layer which are stacked in a head travel direction. A film thickness of the spin injection layer in the head travel direction at a height position away from the air bearing surface is greater than a film thickness of the spin injection layer in the head travel direction on the air bearing surface.

Abstract translation: 根据一个实施例，磁记录头包括空气轴承表面，具有远端部分的磁极，与写入间隙的磁极的远端部分相对的写入屏蔽以及位于写入间隙之间的高频振荡器 磁极和写入屏蔽在写入间隙。 高频振荡器包括沿磁头行进方向堆叠的自旋注入层，中间层和振荡层。 离开空气轴承表面的高度位置处的头行进方向上的自旋注入层的膜厚度大于空气轴承表面上的头行进方向上的自旋注入层的膜厚度。

公开(公告)号：US20160035373A1

公开(公告)日：2016-02-04

申请号：US14809494

申请日：2015-07-27

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Masayuki TAKAGISHI ,  Kenichiro Yamada ,  Tomoyuki Maeda ,  Katsuya Sugawara

IPC: G11B5/11 ,  G11B5/127

CPC classification number: G11B5/11 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315

Abstract: According to one embodiment, a magnetic recording head records information in a magnetic recording medium by shingled magnetic recording. The magnetic recording head includes a magnetic pole and a shield opposing the magnetic pole. The magnetic pole has a shield-opposing surface opposing the shield. The shield-opposing surface includes a first portion and a second portion. A position of the second portion in a track width direction is different from a position of the first portion in the track width direction, the track width direction intersecting a first direction from the magnetic pole toward the shield. The first portion records the information in the magnetic recording medium after the second portion in the shingled magnetic recording. A first distance between the first portion and the shield is shorter than a second distance between the second portion and the shield. The shield-opposing surface is tilted with respect to the first direction.

Abstract translation: 根据一个实施例，磁记录头通过带状磁记录将信息记录在磁记录介质中。 磁记录头包括磁极和与磁极相对的屏蔽。 磁极具有与屏蔽件相对的屏蔽相对表面。 屏蔽相对表面包括第一部分和第二部分。 轨道宽度方向上的第二部分的位置与轨道宽度方向上的第一部分的位置不同，轨道宽度方向与磁极朝向屏蔽的第一方向相交。 第一部分在带状磁记录中的第二部分之后将信息记录在磁记录介质中。 第一部分和屏蔽之间的第一距离比第二部分和屏蔽之间的第二距离短。 屏蔽相对表面相对于第一方向倾斜。

公开(公告)号：US09111552B1

公开(公告)日：2015-08-18

申请号：US14475564

申请日：2014-09-02

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Akihiko Takeo ,  Kenichiro Yamada ,  Noayuki Narita ,  Katsuhiko Koui

IPC: G11B5/127

CPC classification number: G11B5/127 ,  G11B5/1278 ,  G11B5/235 ,  G11B5/3146 ,  G11B2005/0024

Abstract: A magnetic recording head includes a main magnetic pole that applies a recording magnetic field to a recording layer of a recording medium, a write shield that faces the main magnetic pole with a write gap therebetween, a recording coil that generates a magnetic field in the main magnetic pole, a high-frequency oscillator that includes a field generation layer and a spin injection layer, and is disposed within the write gap between the main magnetic pole and the write shield, a wiring electrically connected to the high-frequency oscillator, a modulation electrode that applies a modulation voltage to the field generation layer, and a modulation insulating layer that is interposed between the field generation layer and the modulation electrode.

Abstract translation: 磁记录头包括向记录介质的记录层施加记录磁场的主磁极，与主磁极相对的写入屏蔽，在主磁极之间具有写间隙，在主体中产生磁场的记录线圈 磁极，包括场产生层和自旋注入层的高频振荡器，并且设置在主磁极和写屏蔽之间的写入间隙内，电连接到高频振荡器的布线，调制 向场产生层施加调制电压的电极，以及介于场产生层和调制电极之间的调制绝缘层。

公开(公告)号：US08995085B2

公开(公告)日：2015-03-31

申请号：US14184406

申请日：2014-02-19

Applicant: Kabushiki Kaisha Toshiba

Inventor： Kenichiro Yamada ,  Hitoshi Iwasaki ,  Masayuki Takagishi

IPC: G11B5/35 ,  G11B5/127 ,  G11B5/23 ,  G11B5/31 ,  G11B5/00

CPC classification number: G11B5/09 ,  G11B5/1278 ,  G11B5/3123 ,  G11B5/3133 ,  G11B5/35 ,  G11B20/10222 ,  G11B2005/001

Abstract: An example magnetic recording apparatus includes a magnetic recording medium and a magnetic recording head. The magnetic recording head includes a first magnetic pole to apply a recording magnetic field to a magnetic recording medium, a spin torque oscillator provided parallel to the first magnetic pole, a first coil which surrounds the first magnetic pole, to magnetize the first magnetic pole, and a second coil to pass a current independently of the first coil and magnetize the first magnetic pole. A signal processor writes and reads a signal on the magnetic recording medium by using the magnetic recording head.

Abstract translation: 一种示例性的磁记录装置包括磁记录介质和磁记录头。 磁记录头包括用于向磁记录介质施加记录磁场的第一磁极，平行于第一磁极设置的自旋扭矩振荡器，围绕第一磁极的第一线圈，以磁化第一磁极， 以及第二线圈，以独立于所述第一线圈通过电流并使所述第一磁极励磁。 信号处理器通过使用磁记录头在磁记录介质上写入和读取信号。

公开(公告)号：US08810954B1

公开(公告)日：2014-08-19

申请号：US14024541

申请日：2013-09-11

Applicant: Kabushiki Kaisha Toshiba

Inventor： Tomoko Taguchi ,  Kenichiro Yamada ,  Gaku Koizumi

IPC: G11B21/02 ,  G11B5/02 ,  G11B5/127

CPC classification number: G11B5/1278 ,  G11B5/012 ,  G11B20/10018 ,  G11B2005/0005 ,  G11B2005/0024

Abstract: According to one embodiment, a disk storage apparatus includes a magnetic head and a controller. The controller determines at regular intervals whether a recording density of a write signal belongs to a low-density region or a high-density region with reference to a reference density. In addition, the controller relatively reduces a current to energize a high-frequency-assisted element at a timing of the low-density region to be less than a current of the high-density region, in accordance with the low-density region or the high-density region in recording the data.

Abstract translation: 根据一个实施例，磁盘存储装置包括磁头和控制器。 控制器以规定的间隔确定写入信号的记录密度是否参照参考密度属于低密度区域或高密度区域。 此外，根据低密度区域或低密度区域，控制器相对地减小在低密度区域的定时将高频辅助元件激励为低于高密度区域的电流的电流 高密度区域记录数据。

公开(公告)号：US08675308B2

公开(公告)日：2014-03-18

申请号：US13680363

申请日：2012-11-19

Applicant: Kabushiki Kaisha Toshiba

Inventor： Kenichiro Yamada ,  Takuya Matsumoto ,  Naoyuki Narita ,  Tomoko Taguchi ,  Katsuhiko Koui ,  Akihiko Takeo

IPC: G11B5/127

CPC classification number: G11B5/17 ,  G11B5/1278 ,  G11B5/3123 ,  G11B19/2009 ,  G11B2005/0005

Abstract: According to one embodiment, a magnetic recording head includes a disk-facing surface configured to face a recording layer of a recording medium, a main magnetic pole includes a distal end located on the disk-facing surface and configured to apply a recording magnetic field to the recording layer of the recording medium, a leading shield on a leading side of the main magnetic pole, opposed to the distal end of the main magnetic pole across a gap, a high-frequency oscillator between the leading shield and the distal end of the main magnetic pole, and a recording coil configured to excite the main magnetic pole with a magnetic field.

Abstract translation: 根据一个实施例，磁记录头包括被配置为面对记录介质的记录层的面向盘的表面，主磁极包括位于面向盘的表面上的远端，并被配置为将记录磁场施加到 记录介质的记录层，主磁极的前导侧的前屏蔽，与主磁极的远端相对的间隙相对，在前屏蔽和前端之间的高频振荡器 主磁极和被配置为用磁场激励主磁极的记录线圈。

公开(公告)号：US11942120B2

公开(公告)日：2024-03-26

申请号：US17822753

申请日：2022-08-26

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Susumu Takeda ,  Kenichiro Yamada

IPC: G11B5/012 ,  G11B5/127

CPC classification number: G11B5/012 ,  G11B5/127

Abstract: According to one embodiment, an information processing device includes an acquisition part, and a processor. The acquisition part is configured to acquire a reproduction signal obtained from a recording part. The recording part includes a recording medium. The reproduction signal includes a first signal corresponding to information recorded in the recording medium. The processor is configured to derive a first output and a second output. The first output is obtained by first information being processed by a first processing model. The first information includes the first signal. The second output is obtained by the first information being processed by a second processing model. The processor is configured to output a result of processing the first information based on a third output. The third output is obtained based on the first output, the second output, and the first information.

公开(公告)号：US11710501B2

公开(公告)日：2023-07-25

申请号：US17587198

申请日：2022-01-28

Applicant: KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION

Inventor： Yuji Nakagawa ,  Naoyuki Narita ,  Masayuki Takagishi ,  Tomoyuki Maeda ,  Tazumi Nagasawa ,  Kenichiro Yamada ,  Akira Kikitsu

IPC: G11B5/21 ,  G11B5/31 ,  G11B5/127

CPC classification number: G11B5/21 ,  G11B5/1278 ,  G11B5/3146

Abstract: A magnetic head includes a first magnetic pole, a second magnetic pole, a magnetic element, and a magnetic member. The magnetic element is provided between the first and second magnetic poles, and includes a first magnetic layer. The magnetic member includes a first magnetic part. A second direction from the first magnetic part to the magnetic element crosses a first direction from the first to second magnetic pole. The first magnetic part includes a magnetic material including at least one of first to third materials. The first material includes at least one selected from the group consisting of Mn3Sn, Mn3Ge and Mn3Ga. The second material includes at least one selected from the group consisting of a cubic or tetragonal compound including Mn and Ni, a cubic alloy including γ-phase Mn, and a cubic alloy including Fe. The third material includes an antiferromagnet.