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    Magnetic recording and reproducing head restraining a side reading
    1.
    发明授权
    Magnetic recording and reproducing head restraining a side reading 有权
    磁记录和再现头限制侧读

    公开(公告)号：US07158351B2

    公开(公告)日：2007-01-02

    申请号：US11195782

    申请日：2005-08-03

    Applicant: Kazuhiro Nakamoto ,  Hiroyuki Hoshiya ,  Chiaki Ishikawa

    Inventor： Kazuhiro Nakamoto ,  Hiroyuki Hoshiya ,  Chiaki Ishikawa

    IPC: G11B5/33

    CPC classification number: G11B5/3912

    Abstract: A magnetic recording head includes an upper shield layer, a lower shield layer, a magnetoresistive film interposed between the upper shield layer and the lower shield layer, and a pair of leads electrically coupled to the magnetoresistive film, in which a pair of side shield layers constituted by portions of the upper shield layer is formed on both sides of the magnetoresistive film, and a spacing between each side shield layer and the magnetoresistive film is formed to be narrower than twice of a spacing between the upper shield layer and the lower shield layer, thereby a side reading amount can be made smaller than a conventional side reading value determined from the spacing between the upper and lower shield layers and a magnetic spacing between the head and a medium.

    Abstract translation: 磁记录头包括上屏蔽层，下屏蔽层，介于上屏蔽层和下屏蔽层之间的磁阻膜，以及电耦合到磁阻膜的一对引线，其中一对侧屏蔽层 由上屏蔽层的一部分形成在磁阻膜的两侧，并且每个侧屏蔽层和磁阻膜之间的间隔形成为比上屏蔽层和下屏蔽层之间的间隔的两倍窄 从而可以使侧读取量小于从上下屏蔽层之间的间隔和头与介质之间的磁间隔确定的常规侧读取值。

    Magnetic recording and reproducing head restraining a side reading
    2.
    发明申请
    Magnetic recording and reproducing head restraining a side reading 有权
    磁记录和再现头限制侧读

    公开(公告)号：US20050264948A1

    公开(公告)日：2005-12-01

    申请号：US11195782

    申请日：2005-08-03

    Applicant: Kazuhiro Nakamoto ,  Hiroyuki Hoshiya ,  Chiaki Ishikawa

    Inventor： Kazuhiro Nakamoto ,  Hiroyuki Hoshiya ,  Chiaki Ishikawa

    IPC: G11B5/39 ,  G11B5/127

    CPC classification number: G11B5/3912

    Abstract: A magnetic recording head includes an upper shield layer, a lower shield layer, a magnetoresistive film interposed between the upper shield layer and the lower shield layer, and a pair of leads electrically coupled to the magnetoresistive film, in which a pair of side shield layers constituted by portions of the upper shield layer is formed on both sides of the magnetoresistive film, and a spacing between each side shield layer and the magnetoresistive film is formed to be narrower than twice of a spacing between the upper shield layer and the lower shield layer, thereby a side reading amount can be made smaller than a conventional side reading value determined from the spacing between the upper and lower shield layers and a magnetic spacing between the head and a medium.

    Abstract translation: 磁记录头包括上屏蔽层，下屏蔽层，介于上屏蔽层和下屏蔽层之间的磁阻膜，以及电耦合到磁阻膜的一对引线，其中一对侧屏蔽层 由上屏蔽层的一部分形成在磁阻膜的两侧，并且每个侧屏蔽层和磁阻膜之间的间隔形成为比上屏蔽层和下屏蔽层之间的间隔的两倍窄 从而可以使侧读取量小于从上下屏蔽层之间的间隔和头与介质之间的磁间隔确定的常规侧读取值。

    Magnetoresistive sensor, thin-film read/write head, and magnetic recording apparatus using the sensor
    3.
    发明授权
    Magnetoresistive sensor, thin-film read/write head, and magnetic recording apparatus using the sensor 失效
    磁阻传感器，薄膜读写头和使用该传感器的磁记录装置

    公开(公告)号：US06721148B2

    公开(公告)日：2004-04-13

    申请号：US10198349

    申请日：2002-07-19

    Applicant: Chiaki Ishikawa ,  Yoshio Suzuki

    Inventor： Chiaki Ishikawa ,  Yoshio Suzuki

    IPC: G11B539

    CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3932 ,  G11B2005/3996 ,  H01F10/3268 ,  H01F10/3295

    Abstract: A magnetoresistive head has a magnetoresistive element including an antiferromagnetic layer, a second magnetic layer on the antiferromagnetic layer, a non-magnetic interlayer on the second magnetic layer, and a first magnetic layer on the non-magnetic interlayer. The first magnetic layer has at least one region at an end thereof which has a smaller saturation magnetization than the central part of the first magnetic layer. The end region has a width Xe (in the track width direction) defined by 0.08≦Xe/Twr≦0.2, where Twr denotes the track width. The magnetoresistive element is held between an upper shield and a lower shield. The effect of this construction is that the end regions of the first magnetic layer are more affected by the longitudinal bias field than the central part of the first magnetic layer. Consequently, the occurrence of magnetic domains is efficiently suppressed in the end regions of the first magnetic layer.

    Abstract translation: 磁阻头具有包括反铁磁层，反铁磁层上的第二磁性层，第二磁性层上的非磁性中间层和非磁性中间层上的第一磁性层的磁阻元件。 第一磁性层在其末端具有至少一个具有比第一磁性层的中心部分更小的饱和磁化强度的区域。 端部区域具有由0.08 <= Xe / Twr <= 0.2限定的宽度Xe（在轨道宽度方向上），其中Twr表示轨道宽度。 磁阻元件保持在上屏蔽和下屏蔽之间。 这种结构的效果是第一磁性层的端部区域比第一磁性层的中心部分更受纵向偏置场的影响。 因此，在第一磁性层的端部区域有效地抑制了磁畴的发生。

    Cryptographic management apparatus, decryption management apparatus and program
    5.
    发明授权
    Cryptographic management apparatus, decryption management apparatus and program 有权
    加密管理装置，解密管理装置和程序

    公开(公告)号：US08688969B2

    公开(公告)日：2014-04-01

    申请号：US12237718

    申请日：2008-09-25

    Applicant: Shingo Miyazaki ,  Takanori Nakamizo ,  Akito Niwa ,  Koji Okada ,  Kouya Tochikubo ,  Shigeyuki Fukushima ,  Chiaki Ishikawa ,  Noboru Koshizuka ,  Ken Sakamura

    Inventor： Shingo Miyazaki ,  Takanori Nakamizo ,  Akito Niwa ,  Koji Okada ,  Kouya Tochikubo ,  Shigeyuki Fukushima ,  Chiaki Ishikawa ,  Noboru Koshizuka ,  Ken Sakamura

    IPC: H04L29/06

    CPC classification number: H04L9/0894 ,  H04L2209/12

    Abstract: A cryptographic management apparatus includes a storage unit which stores cryptographic key information containing a cryptographic key and cryptographic process condition information containing the cryptographic key information, a cryptographic process information input unit which receives an input of the object information and cryptographic key search request information, a cryptographic key information acquisition unit which acquires the cryptographic key information from the storage unit based on the search request information, a cryptographic module evaluation description information acquisition unit which acquires evaluation description information of the cryptographic module corresponding to the cryptographic key information, a cryptographic process ID creation unit which attaches an identifier of the cryptographic process condition information to the object information based on the cryptographic key information and the cryptographic module corresponding to the evaluation description information, and an output which outputs the identifier and the result of the cryptographic process executed on the object information.

    Abstract translation: 密码管理装置包括：存储单元，存储包含密码密钥的密码信息和包含密码密钥信息的密码处理条件信息;密码处理信息输入单元，其接收对象信息和加密密钥检索请求信息的输入; 加密密钥信息获取单元，其基于搜索请求信息从存储单元获取加密密钥信息;密码模块评估描述信息获取单元，其获取与密码密钥信息相对应的加密模块的评估描述信息;密码处理ID 创建单元，其基于密码密钥信息和对应于评估描述的密码模块将密码处理条件信息的标识符附加到对象信息 以及输出对对象信息执行的加密处理的标识符和结果的输出。

    CRYPTOGRAPHIC MODULE SELECTING DEVICE AND PROGRAM
    7.
    发明申请
    CRYPTOGRAPHIC MODULE SELECTING DEVICE AND PROGRAM 有权
    CRYPTOGRAPHIC MODULLE SELECTING DEVICE AND PROGRAM

    公开(公告)号：US20100281270A1

    公开(公告)日：2010-11-04

    申请号：US12237656

    申请日：2008-09-25

    Applicant: Shingo Miyazaki ,  Takanori Nakamizo ,  Akito Niwa ,  Koji Okada ,  Kouya Tochikubo ,  Shigeyuki Fukushima ,  Chiaki Ishikawa ,  Noboru Koshizuka ,  Ken Sakamura

    Inventor： Shingo Miyazaki ,  Takanori Nakamizo ,  Akito Niwa ,  Koji Okada ,  Kouya Tochikubo ,  Shigeyuki Fukushima ,  Chiaki Ishikawa ,  Noboru Koshizuka ,  Ken Sakamura

    IPC: G06F21/00

    CPC classification number: H04L9/00 ,  G06F21/602 ,  G06F21/72 ,  G06F2221/2153 ,  H04L2209/127

    Abstract: A cryptographic module selecting device includes a cryptographic module evaluation information storage device configured to store identification information of a cryptographic module and cryptographic module evaluation information describing a function and/or performance of the cryptographic module in relation to each other, a condition information acquiring device configured to acquire condition information for specifying the condition of the cryptographic module to be selected, an extracting device configured to extract cryptographic module evaluation information conforming to the acquired condition information, from the stored cryptographic module evaluation information of the cryptographic module, and an output device configured to read out the identification information of the cryptographic module corresponding to the cryptographic module evaluation information selected by the extracting device from the cryptographic module evaluation information storage device and output the read identification information.

    Abstract translation: 密码模块选择装置包括：密码模块评估信息存储装置，被配置为存储加密模块的识别信息和描述密码模块的功能和/或性能的加密模块评估信息，条件信息获取装置配置 获取用于指定要选择的加密模块的状况的条件信息，提取装置，被配置为从所存储的加密模块的加密模块评估信息中提取符合获取的条件信息的加密模块评估信息，以及配置的输出装置 从加密模块评估信息存储装置读出与由提取装置选择的加密模块评估信息相对应的加密模块的识别信息，并输出读取 识别信息。

    Magnetoresistive head having defined relationships between the tract width and magnetization film thickness product to permit no hysteresis in the transfer curve
    9.
    发明授权
    Magnetoresistive head having defined relationships between the tract width and magnetization film thickness product to permit no hysteresis in the transfer curve 失效
    磁阻头具有定义的通道宽度和磁化膜厚度乘积之间的关系，以便不会在传输曲线中产生迟滞

    公开(公告)号：US07206175B2

    公开(公告)日：2007-04-17

    申请号：US10786270

    申请日：2004-02-24

    Applicant: Akira Morinaga ,  Chiaki Ishikawa ,  Norifumi Miyamoto

    Inventor： Akira Morinaga ,  Chiaki Ishikawa ,  Norifumi Miyamoto

    IPC: G11B5/39

    CPC classification number: G11B5/3906

    Abstract: In a narrow magnetoresistive head having a magnetic domain control film comprising a single layer of magnetic film or magnetic films antiferromagnetically coupled by means of a nonmagnetic member, it has been found that the magnetic domain can be controlled with a smaller magnetization film thickness product than anticipated so far and the range is defined relative to the geometrical track width in the present invention. By defining the magnetization film thickness product of the magnetic domain control film within a prescribed range of the invention, a magnetic head having higher output than usual and having stable output with no hysteresis in the transfer curve and with no output fluctuation can be attained.

    Abstract translation: 在具有包含单层磁性膜的磁畴控制膜或通过非磁性部件反铁磁耦合的磁性膜的窄磁阻磁头中，已经发现，磁畴可以用比预期的更小的磁化膜厚度乘积来控制 到目前为止，在本发明中相对于几何轨道宽度限定范围。 通过将磁畴控制膜的磁化膜厚度乘积限定在本发明的规定范围内，可以获得具有比通常高的输出并且在传送曲线中没有迟滞的稳定输出并且没有输出波动的磁头。

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