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31. 发明授权

US5461526A Magnetoresistive read head and magnetic storage system using the same 失效
标题翻译：磁阻读头和磁存储系统采用相同的
公开(公告)号：US5461526A
公开(公告)日：1995-10-24
申请号：US36364
申请日：1993-03-24
申请人： Yoshihiro Hamakawa , Toshio Kobayashi , Naoki Koyama , Masahiro Kitada
发明人： Yoshihiro Hamakawa , Toshio Kobayashi , Naoki Koyama , Masahiro Kitada
IPC分类号： G11B5/39
CPC分类号： G11B5/398 , G11B5/399 , G11B5/3967
摘要： A magnetoresistive read head includes a magnetoresistive layer having a central active region and end domain control regions, an electrode layer connected to both ends of the magnetoresistive layer, a pattern for providing a transverse bias to the magnetoresistive layer, a soft magnetic film provided on both sides of the magnetoresistive layer for magnetically shielding the magnetoresistive layer, and a substrate for supporting the magnetoresistive layer, pattern and soft magnetic film. A distance between the two end domain control regions of the magnetoresistive layer indicative of a length of the central active region is smaller than a distance between inner end faces of the electrode layer and the distance between the inner end faces of the magnetoresistive substantially corresponds to a read track width. Since both inner end faces of the magnetoresistive layer are set to coincide with the inner end faces of the electrode layer or to be positioned inside thereof, the magnetoresistive read head can prevent generation of Barkhausen noise with a good yield. Further, a track width is determined substantially by the distance between the inner end faces of the hard magnetic layer so that there can be obtained a magnetoresistive read head which is good in its off-track characteristic as well as a magnetic storage system which uses the read head.
摘要翻译：磁阻读取头包括具有中心有源区和端畴控制区的磁阻层，连接到磁阻层两端的电极层，向磁阻层提供横向偏压的图案，设置在两者上的软磁膜用于磁屏蔽磁阻层的磁阻层的侧面，以及用于支撑磁阻层，图案和软磁膜的基板。指示中心有源区的长度的磁阻层的两个端畴控制区之间的距离小于电极层的内端面之间的距离，并且磁阻的内端面之间的距离基本上对应于读取磁道宽度。由于磁阻层的两个内端面被设定为与电极层的内端面一致或位于其内部，所以磁阻读取头可以以良好的产量来防止产生巴克豪森噪声。此外，轨道宽度基本上由硬磁性层的内端面之间的距离确定，使得可以获得其偏离磁道特性良好的磁阻读取头以及使用该磁性存储系统的磁存储系统读头

32. 发明授权

US06297929B1 Magnetic storage apparatus 有权
标题翻译：磁存储装置
公开(公告)号：US06297929B1
公开(公告)日：2001-10-02
申请号：US09557002
申请日：2000-04-20
申请人： Hisashi Takano , Masahiro Kitada , Mikio Suzuki
发明人： Hisashi Takano , Masahiro Kitada , Mikio Suzuki
IPC分类号： G11B5127
CPC分类号： G11B5/31 , G11B5/012 , G11B5/09 , G11B5/1272 , G11B5/17 , G11B5/3109 , G11B5/313 , G11B5/39 , G11B5/3967
摘要： The proposed magnetic storage apparatus has the following features. The frequency at which data is recorded is selected to be 45 MHz. The thickness, resistivity and relative permeability of the magnetic film of which the magnetic poles of the magnetic head used in the apparatus are made are designed considering the eddy current loss. Also, the relation of &mgr;d2/&rgr;≦500 is satisfied where d (&mgr;m) is the thickness of the magnetic film of which the magnetic poles of the magnetic head are made, &rgr;(&mgr;&OHgr;-cm) is the resistivity, and &mgr;is the relative permeability in a low-frequency range. Under these conditions, the amount of attenuation of recording magnetic field is reduced to 10% or below, and problems of writing blur and overwrite value variation which occur as the recording frequency changes can be solved. Moreover, the media data rate is 15 megabytes per sec., and the areal data-recording density is 500 megabits per square inch or more.
摘要翻译：所提出的磁存储装置具有以下特征。记录数据的频率选择为45 MHz。考虑到涡电流损耗，设计制造设备中使用的磁头的磁极的磁性膜的厚度，电阻率和相对磁导率。此外，在d（mum）是制造磁头的磁极的磁性膜的厚度，rho（μOMEGA-cm）是电阻率的情况下，满足mud2 / rho <= 500的关系，并且mu 在低频范围内的相对磁导率。在这些条件下，记录磁场的衰减量降低到10％以下，可以解决写入模糊和记录频率变化时的覆盖值变化的问题。此外，媒体数据速率为每秒15兆字节，而面积数据记录密度为500兆比特每平方英寸或更多。

33. 发明授权

US6064546A Magnetic storage apparatus 失效
标题翻译：磁存储装置
公开(公告)号：US6064546A
公开(公告)日：2000-05-16
申请号：US3506
申请日：1998-01-06
申请人： Hisashi Takano , Masahiro Kitada , Mikio Suzuki
发明人： Hisashi Takano , Masahiro Kitada , Mikio Suzuki
IPC分类号： G11B5/012 , G11B5/02 , G11B5/09 , G11B5/127 , G11B5/17 , G11B5/31 , G11B5/39 , G11B5/23
CPC分类号： G11B5/31 , G11B5/012 , G11B5/09 , G11B5/1272 , G11B5/17 , G11B5/3109 , G11B5/313 , G11B5/39 , G11B5/3967
摘要： The proposed magnetic storage apparatus has the following features. The frequency at which data is recorded is selected to be 45 MHz. The thickness, resistivity and relative permeability of the magnetic film of which the magnetic poles of the magnetic head used in the apparatus are made are designed considering the eddy current loss. Also, the relation of .mu.d.sup.2 /.rho..ltoreq.500 is satisfied where d (.mu.m) is the thickness of the magnetic film of which the magnetic poles of the magnetic head are made, .rho. (.mu..OMEGA.-cm) is the resistivity, and .mu. is the relative permeability in a low-frequency range. Under these conditions, the amount of attenuation of recording magnetic field is reduced to 10% or below, and problems of writing blur and overwrite value variation which occur as the recording frequency changes can be solved. Moreover, the media data rate is 15 megabytes per sec., and the areal data-recording density is 500 megabits per square inch or more.
摘要翻译：所提出的磁存储装置具有以下特征。记录数据的频率选择为45 MHz。考虑到涡电流损耗，设计制造设备中使用的磁头的磁极的磁性膜的厚度，电阻率和相对磁导率。此外，满足μd2 / rho <500的关系，其中d（μm）是制造磁头的磁极的磁膜的厚度，rho（mu OMEGA-cm）是电阻率，mu是低频范围内的相对磁导率。在这些条件下，记录磁场的衰减量降低到10％以下，可以解决写入模糊和记录频率变化时的覆盖值变化的问题。此外，媒体数据速率为每秒15兆字节，而面积数据记录密度为500兆比特每平方英寸或更多。

34. 发明授权

US5181149A Magnetic recording/reproducing head assembly 失效
标题翻译：磁记录/再现头组件
公开(公告)号：US5181149A
公开(公告)日：1993-01-19
申请号：US408690
申请日：1989-09-18
申请人： Masao Katsumata , Kazuhiro Momata , Kazuyoshi Adachi , Tooru Takeura , Masahiro Kitada , Yoshihisa Kamo , Toshikane Yoshimatsu
发明人： Masao Katsumata , Kazuhiro Momata , Kazuyoshi Adachi , Tooru Takeura , Masahiro Kitada , Yoshihisa Kamo , Toshikane Yoshimatsu
IPC分类号： G11B5/31 , G11B5/105 , G11B5/127 , G11B5/17 , G11B5/187 , G11B5/29 , G11B5/39 , G11B5/60
CPC分类号： G11B5/6005 , G11B5/105 , G11B5/1276 , G11B5/17 , G11B5/1877 , G11B5/29 , G11B5/3903
摘要： A magnetic recording/reproducing head assembly comprising a first magnetic path forming member on which a coil is mounted, a second magnetic path forming member which forms a magnetic path in cooperation with the first magnetic path forming member, and a film laminate formed at a front gap portion between the first magnetic path forming member and the second magnetic path forming member. The film laminate includes a magnetic detecting element for detecting a change in a magnetic field and a soft magnetic film or films. This magnetic head assembly is prepared by forming the film laminate on a head base of the head assembly, bonding a core member to the head base with the film laminate formed thereon, and mounting a coil on the core member.
摘要翻译：一种磁记录/再现头组件，包括：第一磁路形成构件，其上安装有线圈;第二磁路形成构件，其与第一磁路形成构件协作形成磁路;以及膜叠层，形成在前面第一磁路形成构件和第二磁路形成构件之间的间隙部分。膜层叠体包括用于检测磁场变化的磁检测元件和软磁膜或膜。这种磁头组件是通过在磁头组件的磁头基座上形成薄膜叠层而将芯体与形成在其上的薄膜层压体相结合的磁芯构件，并将线圈安装在磁芯构件上来制备的。

35. 发明授权

US4663684A Magnetic transducer using magnetoresistance effect 失效
标题翻译：磁传感器采用磁阻效应
公开(公告)号：US4663684A
公开(公告)日：1987-05-05
申请号：US694764
申请日：1985-01-25
申请人： Yoshihisa Kamo , Naoki Sato , Masahiro Kitada , Tooru Takeura
发明人： Yoshihisa Kamo , Naoki Sato , Masahiro Kitada , Tooru Takeura
IPC分类号： G01R33/09 , G11B5/39 , G11B5/30
CPC分类号： B82Y25/00 , G01R33/093 , G11B5/3903 , G11B5/3932 , G11B5/399
摘要： Disclosed is a magnetic transducer using a magnetoresistance effect, comprising a magnetoresistive film, a hard magnetic film for applying a transverse biasing magnetic field thereto, and a conductive film through which current for applying the transverse biasing magnetic field to the magnetoresistive film flows. The conductive film may be either in electrical contact with or in electrical insulation from the magnetoresistive film. In this magnetic transducer, even when the heights of the respective constituents have changed, the transverse biasing magnetic field to be applied does not change considerably, and an optimum bias field strength is readily attained.
摘要翻译：公开了一种使用磁阻效应的磁传感器，包括磁阻膜，用于向其施加横向偏置磁场的硬磁膜，以及用于向磁阻膜施加横向偏置磁场的电流的导电膜。导电膜可以与磁阻膜电接触或者与电绝缘。在这种磁换能器中，即使各构成部件的高度发生变化，所施加的横向偏置磁场也不会发生显着变化，容易获得最佳的偏置磁场强度。

36. 发明授权

US06452758B2 Magnetic storage apparatus 有权
标题翻译：磁存储装置
公开(公告)号：US06452758B2
公开(公告)日：2002-09-17
申请号：US09860645
申请日：2001-05-21
申请人： Hisashi Takano , Masahiro Kitada , Mikio Suzuki
发明人： Hisashi Takano , Masahiro Kitada , Mikio Suzuki
IPC分类号： G11B5127
CPC分类号： G11B5/31 , G11B5/012 , G11B5/09 , G11B5/1272 , G11B5/17 , G11B5/3109 , G11B5/313 , G11B5/39 , G11B5/3967
摘要： The proposed magnetic storage apparatus has the following features. The frequency at which data is recorded is selected to be 45 MHz. The thickness, resistivity and relative permeability of the magnetic film of which the magnetic poles of the magnetic head used in the apparatus are made are designed considering the eddy current loss. Also, the relation of &mgr;d2/&rgr;≦500 is satisfied where d (&mgr;m) is the thickness of the magnetic film of which the magnetic poles of the magnetic head are made, &rgr; (&mgr;&OHgr;-cm) is the resistivity, and &mgr; is the relative permeability in a low-frequency range. Under these conditions, the amount of attenuation of recording magnetic field is reduced to 10% or below, and problems of writing blur and overwrite value variation which occur as the recording frequency changes can be solved. Moreover, the media data rate is 15 megabytes per sec., and the areal data-recording density is 500 megabits per square inch or more.
摘要翻译：所提出的磁存储装置具有以下特征。记录数据的频率选择为45 MHz。考虑到涡电流损耗，设计制造设备中使用的磁头的磁极的磁性膜的厚度，电阻率和相对磁导率。此外，在d（mum）是制造磁头的磁极的磁性膜的厚度，rho（μOMEGA-cm）是电阻率的情况下，满足mud2 / rho <= 500的关系，并且mu 在低频范围内的相对磁导率。在这些条件下，记录磁场的衰减量降低到10％以下，可以解决写入模糊和记录频率变化时的覆盖值变化的问题。此外，媒体数据速率为每秒15兆字节，而面积数据记录密度为500兆比特每平方英寸或更多。

37. 发明授权

US5719729A Magnetic head and recording and reproducing apparatus having an arrangement for improving coincidence between a magnetic center of a read head and physical center of a write head 失效
标题翻译：磁头和记录和再现装置具有用于改善读头的磁心与写头的物理中心之间的一致性的装置
公开(公告)号：US5719729A
公开(公告)日：1998-02-17
申请号：US990769
申请日：1992-12-15
申请人： Naoki Koyama , Yoshihiro Hamakawa , Isamu Yuitoo , Kanji Kawakami , Kazuo Shiiki , Masahiro Kitada
发明人： Naoki Koyama , Yoshihiro Hamakawa , Isamu Yuitoo , Kanji Kawakami , Kazuo Shiiki , Masahiro Kitada
IPC分类号： G11B5/31 , G11B5/39 , G11B5/265
CPC分类号： G11B5/3967
摘要： In an inductive-write, magnetoresistive-read type magnetic head having a magnetoresistive read head and an inductive write head superimposed on each other, the magnetic center of the read head is made more coincident with the physical center of the write head by a changing of a magnetization direction of a magnetoresistive element. The recording/reproducing apparatus using this magnetic head can thus have a good S/N ratio even if the track width is narrow.
摘要翻译：在具有叠加在一起的磁阻读取头和感应写入头的感应写入磁阻读取型磁头中，通过改变读写头的磁中心使写头的磁心与记录头的物理中心更一致磁阻元件的磁化方向。因此，即使磁道宽度窄，使用该磁头的记录/再现装置也可以具有良好的S / N比。

38. 发明授权

US5212609A Magnetoresistive head 失效
标题翻译：磁阻头
公开(公告)号：US5212609A
公开(公告)日：1993-05-18
申请号：US792630
申请日：1991-11-15
申请人： Isamu Yuito , Makoto Morijiri , Tooru Takeura , Naoki Koyama , Masahiro Kitada
发明人： Isamu Yuito , Makoto Morijiri , Tooru Takeura , Naoki Koyama , Masahiro Kitada
IPC分类号： G11B5/39
CPC分类号： G11B5/3903 , Y10T29/49052
摘要： A magnetoresistive head is disclosed. It comprises a lower gap film, a magnetoresistive film, a bias film, an electrode, an upper gap film, and upper shield film provided in sequence on a substrate. A protective film is provided under the upper shield film to prevent the upper gap film and electrode from the undesirable etching during patterning the upper shield film.
摘要翻译：公开了一种磁阻头。它包括依次设置在基板上的下间隙膜，磁阻膜，偏置膜，电极，上间隙膜和上屏蔽膜。在上屏蔽膜下方设置有保护膜，以防止在上屏蔽膜图案化期间上间隙膜和电极不期望的蚀刻。

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