专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07990654B2 Perpendicular magnetic recording head 有权
标题翻译：垂直磁记录头
公开(公告)号：US07990654B2
公开(公告)日：2011-08-02
申请号：US12038294
申请日：2008-02-27
申请人： Hisayuki Yazawa , Takahiro Taoka , Hiroshi Kameda
发明人： Hisayuki Yazawa , Takahiro Taoka , Hiroshi Kameda
IPC分类号： G11B5/31
CPC分类号： G11B5/1278 , G11B5/3116
摘要： A perpendicular magnetic recording head includes a main magnetic pole layer and an auxiliary yoke layer that overlaps the main magnetic pole layer as viewed in a top view and is magnetically coupled to the main magnetic pole layer. The main magnetic pole layer includes a pole straight part exposed to an opposing surface opposite a recording medium, and a flared part that extends from the pole straight part in a height direction, the flared part broadening in a track width direction as the flared part extends in the height direction. The auxiliary yoke layer includes a flared part that extends from the recording medium-opposing surface, the flared part broadening in the track width direction as the flared part extends in the height direction. The flared part of the auxiliary yoke layer is disposed at a position located closer to the rear side in the height direction than the flared part of the main magnetic pole layer. The flared part of the main magnetic pole layer is formed at a flare angle greater than a flare angle of the auxiliary yoke layer.
摘要翻译：垂直磁记录头包括主磁极层和与主磁极层重叠的辅助磁轭层，如顶视图所示，并且磁耦合到主磁极层。主磁极层包括暴露于与记录介质相对的相对表面的极直部分，以及在高度方向上从极直部分延伸的扩张部分，当扩张部延伸时，扩张部分在轨道宽度方向上变宽在高度方向。辅助轭层包括从记录介质相对表面延伸的扩张部分，当扩张部分在高度方向上延伸时，扩张部分在轨道宽度方向上变宽。辅助磁轭层的扩口部分位于比主磁极层的扩张部分更靠近高度方向后侧的位置。主磁极层的扩口部形成为大于辅助磁轭层的扩口角的喇叭角。

2. 发明申请

US20070041127A1 PERPENDICULAR MAGNETIC RECORDING HEAD HAVING RETURN PATH LAYER AND GAP ADJUSTING LAYER 有权
标题翻译：具有返回路径层和差距调整层的平面磁记录头
公开(公告)号：US20070041127A1
公开(公告)日：2007-02-22
申请号：US11460922
申请日：2006-07-28
申请人： Hiroshi Kameda , Hisayuki Yazawa
发明人： Hiroshi Kameda , Hisayuki Yazawa
IPC分类号： G11B5/147
CPC分类号： G11B5/1278
摘要： A perpendicular magnetic recording head includes a main pole layer and a return path layer that are exposed from a medium-facing surface of the recording head facing a recording medium and that face each other with a predetermined gap therebetween at the medium-facing surface. A coil layer applies a recording magnetic field to the main pole layer and the return path layer. The return path layer includes a gap adjusting layer and a main layer stacked in that order from a side facing the main pole layer. The gap adjusting layer is positioned so as to face the main pole layer and the recording medium, and is made of a magnetic material having a resistivity lower than resistivities of the main layer and the main pole layer.
摘要翻译：垂直磁记录头包括从面向记录介质的记录头的面向中间的表面露出的主极层和返回路径层，并且在面向介质的表面上以预定的间隙彼此面对。线圈层向主极层和返回路径层施加记录磁场。返回路径层包括从面向主极层的一侧依次层叠的间隙调整层和主层。间隙调整层被定位为面对主极层和记录介质，并且由具有比主层和主极层的电阻率低的电阻率的磁性材料制成。

3. 发明授权

US08116033B2 Thin-film magnetic head with main magnetic pole layer and auxiliary yoke layer flare configurations 有权
标题翻译：具有主磁极层和辅助磁轭层的薄膜磁头发光配置
公开(公告)号：US08116033B2
公开(公告)日：2012-02-14
申请号：US12126519
申请日：2008-05-23
申请人： Hiroshi Kameda , Hisayuki Yazawa
发明人： Hiroshi Kameda , Hisayuki Yazawa
IPC分类号： G11B5/31
CPC分类号： G11B5/3116
摘要： To provide a thin-film magnetic head which suppresses PE while securing magnetic recording capability by controlling a domain of a leading end part of a main magnetic pole layer. The first flare part has a first flare angle smaller than a second flare angle of the second flare part. The second flare angle is smaller than 90°. The auxiliary yoke layer has a flare angle not smaller than the first flare angle but not greater than the second flare angle. The length h from the medium-opposing surface of the pole straight part to the end on the deeper side in the height direction of the first flare part satisfies the following conditional expression: h×Bs
摘要翻译：为了提供一种通过控制主磁极层的前端部分的区域来确保磁记录能力而抑制PE的薄膜磁头。第一喇叭口部分具有小于第二喇叭口部分的第二扩张角的第一扩张角。第二个喇叭角小于90°。辅助轭层具有不小于第一扩张角但不大于第二扩张角的喇叭角。从直线部的中间相对面到第一扩张部的高度方向的深度侧的端部的长度h满足以下条件式：h×Bs <0.000008 [m·T]其中Bs为主磁极层的饱和磁通密度。

4. 发明授权

US08085500B2 Perpendicular magnetic recording head with partial side shield layers 失效
标题翻译：带有侧面屏蔽层的垂直磁记录头
公开(公告)号：US08085500B2
公开(公告)日：2011-12-27
申请号：US12107368
申请日：2008-04-22
申请人： Hisayuki Yazawa , Takahiro Taoka , Hiroshi Kameda
发明人： Hisayuki Yazawa , Takahiro Taoka , Hiroshi Kameda
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278
摘要： In a perpendicular magnetic recording head in which a magnetic pole part of a main magnetic pole layer exposed at a medium-opposing surface exhibits a trapezoidal form narrower on the leading edge side than on the trailing edge side, a pair of partial side shield layers made of a soft magnetic material are provided on both sides in the track width direction of the magnetic pole part of the main magnetic pole layer such as to be located more on the leading edge side of the magnetic pole part.
摘要翻译：在垂直磁记录头中，在中间相对表面上露出的主磁极层的磁极部分在前缘侧比后缘侧呈梯形变窄，形成一对局部侧屏蔽层软磁性材料的两侧设置在主磁极层的磁极部的磁道宽度方向上，以便位于磁极部的前缘侧。

5. 发明授权

US07990655B2 Perpendicular magnetic recording head having a bottom shield part magnetically connected to a pair of side shield parts 有权
标题翻译：垂直磁记录头，其具有磁性地连接到一对侧屏蔽部分的底部屏蔽部分
公开(公告)号：US07990655B2
公开(公告)日：2011-08-02
申请号：US12107394
申请日：2008-04-22
申请人： Hisayuki Yazawa , Takahiro Taoka , Hiroshi Kameda
发明人： Hisayuki Yazawa , Takahiro Taoka , Hiroshi Kameda
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278
摘要： In a perpendicular magnetic recording head in which a magnetic pole part of a main magnetic pole layer exposed at a medium-opposing surface exhibits a trapezoidal form narrower at a leading edge than at a trailing edge on the return yoke layer side, a magnetic shield layer having a pair of side shield parts separated at the leading edge so as to oppose both side faces of the magnetic pole part and a bottom shield part magnetically connected to the pair of side shield parts and positioned below the leading edge of the magnetic pole part is provided on the leading edge side in the track width direction of the magnetic pole part of the main magnetic pole layer.
摘要翻译：在垂直磁记录头中，其中在中间相对表面上暴露的主磁极层的磁极部分在前缘处比在返回磁轭层侧的后缘处呈梯形变窄，磁屏蔽层具有一对在前缘分离以与磁极部的两个侧面相对的侧面屏蔽部分和与该一对侧面屏蔽部分磁性连接并位于磁极部分的前缘下方的底部屏蔽部分，设置在主磁极层的磁极部的轨道宽度方向的前缘侧。

6. 发明申请

US20080239569A1 PERPENDICULAR MAGNETIC RECORDING HEAD 有权
标题翻译：全能磁记录头
公开(公告)号：US20080239569A1
公开(公告)日：2008-10-02
申请号：US12038294
申请日：2008-02-27
申请人： Hisayuki Yazawa , Takahiro Taoka , Hiroshi Kameda
发明人： Hisayuki Yazawa , Takahiro Taoka , Hiroshi Kameda
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/1278 , G11B5/3116
摘要： A perpendicular magnetic recording head includes a main magnetic pole layer and an auxiliary yoke layer that overlaps the main magnetic pole layer as viewed in a top view and is magnetically coupled to the main magnetic pole layer. The main magnetic pole layer includes a pole straight part exposed to an opposing surface opposite a recording medium, and a flared part that extends from the pole straight part in a height direction, the flared part broadening in a track width direction as the flared part extends in the height direction. The auxiliary yoke layer includes a flared part that extends from the recording medium-opposing surface, the flared part broadening in the track width direction as the flared part extends in the height direction. The flared part of the auxiliary yoke layer is disposed at a position located closer to the rear side in the height direction than the flared part of the main magnetic pole layer. The flared part of the main magnetic pole layer is formed at a flare angle greater than a flare angle of the auxiliary yoke layer.
摘要翻译：垂直磁记录头包括主磁极层和与主磁极层重叠的辅助磁轭层，如顶视图所示，并且磁耦合到主磁极层。主磁极层包括暴露于与记录介质相对的相对表面的极直部分，以及在高度方向上从极直部分延伸的扩张部分，当扩张部延伸时，扩张部分在轨道宽度方向上变宽在高度方向。辅助轭层包括从记录介质相对表面延伸的扩张部分，当扩张部分在高度方向上延伸时，扩张部分在轨道宽度方向上变宽。辅助磁轭层的扩口部分位于比主磁极层的扩张部分更靠近高度方向后侧的位置。主磁极层的扩口部形成为大于辅助磁轭层的扩口角的喇叭角。

7. 发明授权

US07692896B2 Perpendicular magnetic recording head having return path layer and gap adjusting layer 有权
标题翻译：具有返回路径层和间隙调整层的垂直磁记录头
公开(公告)号：US07692896B2
公开(公告)日：2010-04-06
申请号：US11460922
申请日：2006-07-28
申请人： Hiroshi Kameda , Hisayuki Yazawa
发明人： Hiroshi Kameda , Hisayuki Yazawa
IPC分类号： G11B5/147
CPC分类号： G11B5/1278
摘要： A perpendicular magnetic recording head includes a main pole layer and a return path layer that are exposed from a medium-facing surface of the recording head facing a recording medium and that face each other with a predetermined gap therebetween at the medium-facing surface. A coil layer applies a recording magnetic field to the main pole layer and the return path layer. The return path layer includes a gap adjusting layer and a main layer stacked in that order from a side facing the main pole layer. The gap adjusting layer is positioned so as to face the main pole layer and the recording medium, and is made of a magnetic material having a resistivity lower than resistivities of the main layer and the main pole layer.
摘要翻译：垂直磁记录头包括从面向记录介质的记录头的面向中间的表面露出的主极层和返回路径层，并且在面向介质的表面上以预定的间隙彼此面对。线圈层向主极层和返回路径层施加记录磁场。返回路径层包括从面向主极层的一侧依次层叠的间隙调整层和主层。间隙调整层被定位为面对主极层和记录介质，并且由具有比主层和主极层的电阻率低的电阻率的磁性材料制成。

8. 发明授权

US08085184B2 Radar device and processing method therefor 有权
标题翻译：雷达装置及其处理方法
公开(公告)号：US08085184B2
公开(公告)日：2011-12-27
申请号：US12421926
申请日：2009-04-10
申请人： Yuuki Takabayashi , Hiroshi Kameda
发明人： Yuuki Takabayashi , Hiroshi Kameda
IPC分类号： G01S13/00 , G01S13/08 , G01S13/58
CPC分类号： G01S13/931 , G01S13/343 , G01S13/584 , G01S2013/9325
摘要： According to a conventional method of correlating beat frequencies in a radar device, a detecting state of a target differs at the time of up-chirping and at that of down-chirping, so that, when the number of peaks of beat frequencies does not match with each other, there occurs a situation in which the beat frequencies cannot be accurately correlated.The radar device herein provided includes a transmission unit for transmitting a frequency-modulated continuous wave (FMCW) signal; a reception unit for generating a beat signal from the transmission signal and a reception signal corresponding thereto; a beat-frequency generating unit for obtaining a beat-frequency distribution corresponding to the beat signal; an up-chirp beat-frequency tracking means and a down-chirp beat-frequency tracking means for performing tracking processing on a beat signal; and an up-chirp target-detection means and a down-chirp target-detection means for calculating a range and range-change rate to a target based on a beat signal's frequency distribution.
摘要翻译：根据雷达装置中的拍频相关的常规方法，目标的检测状态在向上啁啾时和在下啁啾时的检测状态不同，使得当拍频的峰值数不匹配时彼此发生拍频不能被精确相关的情况。本文提供的雷达装置包括用于发送调频连续波（FMCW）信号的发送单元; 接收单元，用于从所述发送信号产生拍频信号和与其对应的接收信号; 拍频产生单元，用于获得对应于拍子信号的拍频分布; 用于对拍子信号进行跟踪处理的向上啁啾拍频跟踪装置和下啁啾拍频调频装置; 以及向上啁啾目标检测装置和下行啁啾目标检测装置，用于基于拍子信号的频率分布来计算对目标的范围和范围变化率。

9. 发明授权

US08064164B2 Perpendicular magnetic recording head 有权
标题翻译：垂直磁记录头
公开(公告)号：US08064164B2
公开(公告)日：2011-11-22
申请号：US12124217
申请日：2008-05-21
申请人： Tomohiro Yamashita , Hiroshi Kameda , Katsuhiko Otomo
发明人： Tomohiro Yamashita , Hiroshi Kameda , Katsuhiko Otomo
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/3123 , G11B5/3133
摘要： In a perpendicular magnetic recording head comprising a main magnetic pole layer and a return yoke layer which have respective front end faces exposed at a surface opposing a recording medium and are laminated with a nonmagnetic material layer interposed therebetween on the medium-opposing surface, an end magnetization control layer for generating an exchange-coupling field is provided on the upper or lower side of both end parts in a track width direction of the return yoke layer. The exchange-coupling field fixes magnetization in the end parts to the track width direction.
摘要翻译：在包括主磁极层和返回磁轭层的垂直磁记录头中，其具有在与记录介质相对的表面处暴露的相应的前端面，并且在介质相对表面上层叠有非磁性材料层，用于产生交换耦合场的磁化控制层设置在返回磁轭层的轨道宽度方向上的两个端部的上侧或下侧。交换耦合场将端部中的磁化固定到轨道宽度方向。

10. 发明授权

US07852603B2 Perpendicular magnetic recording head capable of suppressing problem such as erasure of magnetic data 有权
标题翻译：能够抑制磁数据擦除等问题的垂直磁记录头
公开(公告)号：US07852603B2
公开(公告)日：2010-12-14
申请号：US11676113
申请日：2007-02-16
申请人： Kiyoshi Kobayashi , Hiroshi Kameda
发明人： Kiyoshi Kobayashi , Hiroshi Kameda
IPC分类号： G11B5/187
CPC分类号： G11B5/3116 , G11B5/1278
摘要： A perpendicular magnetic recording head is provided. The perpendicular magnetic recording head includes a main magnetic pole layer overlapped with a sub-yoke layer. The sub-yoke layer having a multiple-magnetic domain includes a magnetic domain having dominant track-widthwise component in contact with a front end face of the sub-yoke layer. A main magnetic pole layer 24 is overlapped with the magnetic domain 35b and is affected by the magnetic domain 35b.
摘要翻译：提供垂直磁记录头。垂直磁记录头包括与副轭铁层重叠的主磁极层。具有多磁畴的子轭层包括具有与副轭铁层的前端面接触的主导轨宽分量的磁畴。主磁极层24与磁畴35b重叠，受磁畴35b的影响。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式