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1. 发明授权

US08559123B2 Magnetic recording device, magnetic recording method and magnetic recording medium for shingle write scheme 失效
标题翻译：磁记录装置，磁记录方法和瓦片写入方案的磁记录介质
公开(公告)号：US08559123B2
公开(公告)日：2013-10-15
申请号：US12801540
申请日：2010-06-14
申请人： Kei Hirata , Norikazu Ota , Noboru Yamanaka
发明人： Kei Hirata , Norikazu Ota , Noboru Yamanaka
IPC分类号： G11B5/09
CPC分类号： G11B5/1278 , B82Y10/00 , G11B5/743
摘要： This magnetic recording device is provided with a magnetic write head having a magnetic pole, and a magnetic recording medium having a plurality of data recording blocks. Each of the data recording blocks is formed with a plurality of write tracks, and separated, in a write track width direction, from neighboring one of the data recording blocks with a writing exudation suppression section in between. With this configuration, a magnetic mutual interference of the adjacent data recording blocks at the time of a data rewriting process is avoided even when a mutual interval of the data recording blocks is narrowed, and a good recording state is maintained in each of the data recording blocks. Therefore, it is possible to achieve an improvement in a recording density, while realizing the good and brief data rewriting process for each of the data recording blocks.
摘要翻译：该磁记录装置设置有具有磁极的磁写头和具有多个数据记录块的磁记录介质。每个数据记录块形成有多个写入磁道，并且在写入磁道宽度方向上与相邻的一个数据记录块之间具有写入渗出抑制部分。利用这种配置，即使当数据记录块的相互间隔变窄时也避免了在数据重写处理时相邻的数据记录块的磁互相干扰，并且在每个数据记录中保持良好的记录状态块。因此，可以实现对每个数据记录块的良好且简短的数据重写处理的记录密度的提高。

2. 发明授权

US08085491B2 Method of determining flying height of magnetic head 有权
公开(公告)号：US08085491B2
公开(公告)日：2011-12-27
申请号：US12659129
申请日：2010-02-26
申请人： Yosuke Antoku , Noboru Yamanaka , Masashi Sano , Kosuke Tanaka , Man Tse , Eric Cheuk Wing Leung , Luke Hung Leung Chung
发明人： Yosuke Antoku , Noboru Yamanaka , Masashi Sano , Kosuke Tanaka , Man Tse , Eric Cheuk Wing Leung , Luke Hung Leung Chung
IPC分类号： G11B2/21
CPC分类号： G11B5/6005 , G11B5/6064
摘要： For obtaining a flying height of a magnetic head from a magnetic disk, the magnetic head being placed in a slider arranged at an interval with the magnetic disk, an initial setting process and a flying height detecting process are performed. In the initial setting process, driving power to a heater is increased gradually, from a state where the heater arranged at a position in proximity to the magnetic head in the slider is not driven, until the magnetic head makes contact with the magnetic disk. Then, in each stage, an electrical resistance value of the sensor arranged at a position in proximity to the magnetic head in the slider, which is increased due to the heat from heater, and either an approach distance of the magnetic head toward the magnetic disk or the flying height of the magnetic head from the magnetic disk are acquired. Then, basic data is prepared by obtaining the relationship between a variation of the electrical resistance value of the sensor and the flying height of the magnetic head from the magnetic disk, which is obtained in each stage or which calculated from the approach distance in each stage. In the flying height detecting process, an electrical resistance value of the sensor is determined, and a variation of the electrical resistance value is calculated from the determined values. Then, the flying height of the magnetic head from the magnetic disk in the state where the electrical resistance value was determined is obtained based on the basic data obtained in the initial setting process, using the calculated variation of the electrical resistance value.

3. 发明授权

US08027110B1 Apparatus for measuring magnetic field of microwave-assisted head 有权
标题翻译：用于测量微波辅助头磁场的装置
公开(公告)号：US08027110B1
公开(公告)日：2011-09-27
申请号：US12844348
申请日：2010-07-27
申请人： Noboru Yamanaka , Tomoyuki Sasaki , Takuya Adachi , Isamu Sato , Hiroshi Ikeda
发明人： Noboru Yamanaka , Tomoyuki Sasaki , Takuya Adachi , Isamu Sato , Hiroshi Ikeda
IPC分类号： G11B27/36
CPC分类号： G01R33/091 , G11B5/314 , G11B2005/0024
摘要： A measurement circuit system of a magnetic field measurement apparatus of the present invention includes an amplifier, a mixer circuit and a band-pass filter that are connected in order on an output end side of a microstrip line or a coplanar wave guide, which is an in-plane high frequency magnetic field intensity measurement element, a frequency immediately before being inputted in the band-pass filter is down-converted by the mixer circuit to a frequency so that a band width of the band-pass filter can be used, the band-pass filter uses a narrow band of ±0.5-±10 KHz (1 KHz-20 KHz as a bandwidth) centering a fundamental frequency selected from 5-20 MHz that is down-converted by the mixer circuit as a center peak passing frequency, and the measurement circuit system is configured to obtain 3 dB or greater of a signal-to-noise ratio (SNR) that is a ratio of S with N; where S represents the reproduction voltage (reproduction output) of the high frequency reproduction signal induced by the in-plane high frequency magnetic field intensity measurement element, and N represents a total noise voltage of a circuit noise including a noise generated by the in-plane high frequency magnetic field intensity measurement element. Therefore, the in-plane high frequency magnetic field that a microwave-assisted magnetic head generates can be measured with high reliability and precision.
摘要翻译：本发明的磁场测量装置的测量电路系统包括在微带线或共面波导的输出端侧依次连接的放大器，混频器电路和带通滤波器，它是在平面内的高频磁场强度测量元件中，紧接在带通滤波器中输入的频率由混频器电路下变频到频率，使得可以使用带通滤波器的带宽，带通滤波器采用±0.5〜10KHz（1KHz-20KHz作为带宽）的中心峰值通过频率，该频带以选择5-20MHz的基频为中心，由频率调制器电路进行下变频并且测量电路系统被配置为获得S与N的比率的3dB或更大的信噪比（SNR）; 其中S表示由面内高频磁场强度测量元件感应的高频再现信号的再现电压（再现输出），N表示包括由平面内高频磁场强度测量元件产生的噪声的电路噪声的总噪声电压高频磁场强度测量元件。因此，可以高可靠性和精度地测量微波辅助磁头产生的平面内高频磁场。

4. 发明申请

US20110211275A1 Method of determining flying height of magnetic head 有权
标题翻译：确定磁头飞行高度的方法
公开(公告)号：US20110211275A1
公开(公告)日：2011-09-01
申请号：US12659129
申请日：2010-02-26
申请人： Yosuke Antoku , Noboru Yamanaka , Masashi Sano , Kosuke Tanaka , Man Tse , Eric Cheuk Wing Leung , Luke Hung Leung Chung
发明人： Yosuke Antoku , Noboru Yamanaka , Masashi Sano , Kosuke Tanaka , Man Tse , Eric Cheuk Wing Leung , Luke Hung Leung Chung
IPC分类号： G11B21/02
CPC分类号： G11B5/6005 , G11B5/6064
摘要： For obtaining a flying height of a magnetic head from a magnetic disk, the magnetic head being placed in a slider arranged at an interval with the magnetic disk, an initial setting process and a flying height detecting process are performed. In the initial setting process, driving power to a heater is increased gradually, from a state where the heater arranged at a position in proximity to the magnetic head in the slider is not driven, until the magnetic head makes contact with the magnetic disk. Then, in each stage, an electrical resistance value of the sensor arranged at a position in proximity to the magnetic head in the slider, which is increased due to the heat from heater, and either an approach distance of the magnetic head toward the magnetic disk or the flying height of the magnetic head from the magnetic disk are acquired. Then, basic data is prepared by obtaining the relationship between a variation of the electrical resistance value of the sensor and the flying height of the magnetic head from the magnetic disk, which is obtained in each stage or which calculated from the approach distance in each stage. In the flying height detecting process, an electrical resistance value of the sensor is determined, and a variation of the electrical resistance value is calculated from the determined values. Then, the flying height of the magnetic head from the magnetic disk in the state where the electrical resistance value was determined is obtained based on the basic data obtained in the initial setting process, using the calculated variation of the electrical resistance value.
摘要翻译：为了从磁盘获得磁头的飞行高度，磁头被放置在与磁盘间隔设置的滑块中，执行初始设定处理和飞行高度检测处理。在初始设定处理中，从布置在滑动件附近的磁头的位置的加热器未被驱动的状态直到磁头与磁盘接触的状态逐渐增加到加热器的驱动电力。然后，在各阶段，布置在靠近滑块的磁头的位置处的传感器的电阻值由于来自加热器的热而增加，并且磁头朝向磁盘的接近距离或者从磁盘获取磁头的飞行高度。然后，通过获得传感器的电阻值的变化与来自磁盘的磁头的飞行高度之间的关系来准备基本数据，该关系是在每个阶段中获得的，或者由每个阶段中的接近距离计算。在飞行高度检测处理中，确定传感器的电阻值，并根据确定的值计算电阻值的变化。然后，使用计算出的电阻值的变化，基于在初始设定处理中获得的基本数据，求出在确定了电阻值的状态下磁头从磁盘的飞行高度。

5. 发明申请

US20080049352A1 MAGNETIC REPRODUCING METHOD FOR SUPPRESSING LOW TEMPERATURE NOISE 失效
标题翻译：用于抑制低温噪声的磁化重现方法
公开(公告)号：US20080049352A1
公开(公告)日：2008-02-28
申请号：US11835927
申请日：2007-08-08
申请人： Noboru YAMANAKA , Susumu NAGATSUKA , Yoshihiro KUDO , Eric Cheuk Wing LEUNG , Chris Chiu Ming LEUNG , Leo Wai Kay LAU , Charles Kin Chiu WONG
发明人： Noboru YAMANAKA , Susumu NAGATSUKA , Yoshihiro KUDO , Eric Cheuk Wing LEUNG , Chris Chiu Ming LEUNG , Leo Wai Kay LAU , Charles Kin Chiu WONG
IPC分类号： G11B5/02
CPC分类号： G11B5/40 , G11B5/02 , G11B5/3967 , G11B5/6064 , G11B5/607 , G11B2005/0005
摘要： Provided is a magnetic reproducing method that enables a thin-film magnetic head including a head element for reading data signals which has a noise in its output due to a low temperature to bring out an excellent read characteristic in which the noise is suppressed even under the use environment with the low temperature. The magnetic reproducing method comprises the steps of: heating a head element for reading data signals which has a noise in its output due to a low temperature; and performing a read operation by using the head element for reading data signals under condition that the head element is increased in temperature.
摘要翻译：提供了一种磁性再现方法，其能够实现包括用于读取由于低温而在其输出中具有噪声的数据信号的头元件的薄膜磁头，以产生甚至在使用环境温度低。磁再现方法包括以下步骤：加热用于读取由于低温而在其输出中具有噪声的数据信号的头元件; 并且在头元件温度升高的条件下，通过使用用于读取数据信号的头元件执行读取操作。

6. 发明授权

US6031696A Thin-film magnetic head having conductive material contacting sides of the upper pole layer and an upper surface of the lower pole layer 失效
标题翻译：具有导电材料构件的薄膜磁头与上极层的侧面和下极层的上表面接触
公开(公告)号：US6031696A
公开(公告)日：2000-02-29
申请号：US92873
申请日：1998-06-08
申请人： Noboru Yamanaka
发明人： Noboru Yamanaka
IPC分类号： G11B5/31 , G11B5/39 , G11B5/147 , G11B5/187
CPC分类号： G11B5/3967 , G11B5/3109 , G11B5/3143 , G11B5/312
摘要： A thin-film magnetic head includes a recording gap layer, lower and upper magnetic pole layers deposited to sandwich the recording gap layer, the upper magnetic pole layer having side surfaces facing toward a track width direction, and non-magnetic conductive material members being in contact with at least a part of the respective side surfaces of the upper magnetic pole layer and in contact with the lower magnetic pole layer.
摘要翻译：薄膜磁头包括记录间隙层，沉积以夹持记录间隙层的下磁极层和上磁极层，上磁极层具有面向轨道宽度方向的侧表面，并且非磁性导电材料构件位于与上磁极层的相应侧表面的至少一部分接触并与下磁极层接触。

7. 发明授权

US5995329A Hard magnetic disc unit having head gimbal assemblies 失效
标题翻译：具有头万向节组件的硬盘单元
公开(公告)号：US5995329A
公开(公告)日：1999-11-30
申请号：US70981
申请日：1998-05-01
申请人： Masashi Shiraishi , Noboru Yamanaka
发明人： Masashi Shiraishi , Noboru Yamanaka
IPC分类号： G11B5/60 , G11B5/48 , G11B5/56 , G11B21/21 , H05K1/02 , H05K1/05
CPC分类号： H05K1/0253 , G11B5/4826 , G11B5/4853 , H05K1/0224 , H05K1/0272 , H05K1/056 , H05K2201/09681 , H05K2201/0969
摘要： A hard magnetic disc unit having a plurality of head gimbal assemblies. Each head gimbal assembly has a magnetic head slider, a metal suspension for supporting the magnetic head slider, and insulating material layer formed on the metal suspension, and a conductive pattern of lead lines electrically connected with the magnetic head. The conductive pattern is formed on the insulating material layer. There are arm portions for supporting the respective head gimbal assemblies and an actuator for moving the arm portions to position the magnetic head sliders. There are also a plurality of resistors having a high resistance value for discharging electrostatic charge. The head gimbal assemblies are electrically insulated from a ground, and the resistors are connected between the head gimbal assemblies and the ground, respectively.
摘要翻译：具有多个头部万向节组件的硬磁盘单元。每个头万向架组件具有磁头滑块，用于支撑磁头滑块的金属悬架和形成在金属悬架上的绝缘材料层，以及与磁头电连接的导线的导电图案。导电图案形成在绝缘材料层上。存在用于支撑相应的头万向架组件的臂部分和用于移动臂部分以定位磁头滑块的致动器。还有多个电阻器具有用于放电静电电荷的高电阻值。头万向架组件与地面电绝缘，电阻分别连接在头部万向架组件和地面之间。

8. 发明授权

US08107352B1 Microwave assisted magnetic head 有权
标题翻译：微波辅助磁头
公开(公告)号：US08107352B1
公开(公告)日：2012-01-31
申请号：US12852775
申请日：2010-08-09
申请人： Noboru Yamanaka , Takuya Adachi , Isamu Sato , Hiroshi Ikeda
发明人： Noboru Yamanaka , Takuya Adachi , Isamu Sato , Hiroshi Ikeda
IPC分类号： G11B7/00 , G11B5/147
CPC分类号： G11B5/314 , G11B5/1278 , G11B2005/0024
摘要： A microwave assisted magnetic head is formed to include a main pole magnetic layer including a main pole; a shielded magnetic layer including a shielded pole; a recording coil that is formed to generate a writing magnetic field from a tip of the main pole; and a microwave radiation waveguide made of a conductive nonmagnetic material that is disposed in a recording gap, the recording gap being a gap between the main pole and the shielded pole. The main pole magnetic layer and the shielded magnetic layer have an intermediate connection part that connects the layers at a depth-side, and an electrical insulation magnetic film is disposed in the intermediate connection part, and the main pole and the shielded pole are electrically connected with the microwave radiation waveguide that is disposed in the recording gap, which is the gap between the main pole and the shielded pole so that a simple configuration, with a relatively easy and efficient manufacturing process, is realized that overlaps AC magnetic fields in an in-plane direction of a microwave band, which is the same as, or close to, a ferromagnetic resonant frequency of a medium recording layer.
摘要翻译：微波辅助磁头形成为包括主极的主极磁性层; 包括屏蔽极的屏蔽磁性层; 形成为从主极的尖端产生书写磁场的记录线圈; 以及设置在记录间隙中的由导电非磁性材料制成的微波辐射波导，记录间隙是主极和屏蔽极之间的间隙。主极磁性层和屏蔽磁性层具有在深度侧连接层的中间连接部，并且在中间连接部中设置电绝缘性的磁性膜，并且主极和屏蔽极电气连接利用布置在作为主极和屏蔽极之间的间隙的记录间隙中的微波辐射波导，从而实现了具有相对简单和有效的制造工艺的简单配置，其与交流磁场重叠，与介质记录层的铁磁谐振频率相同或接近的微波频带的平面方向。

9. 发明授权

US07187521B2 Thin-film magnetic head, head gimbal assembly, and hard disk drive 有权
公开(公告)号：US07187521B2
公开(公告)日：2007-03-06
申请号：US10778228
申请日：2004-02-17
申请人： Noboru Yamanaka , Norikazu Ota
发明人： Noboru Yamanaka , Norikazu Ota
IPC分类号： G11B5/31
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/10 , G11B5/105 , G11B5/11 , G11B5/3103 , G11B5/3967 , G11B5/40 , G11B5/4886 , G11B2005/3996
摘要： A thin-film magnetic head comprises at least one of a magnetoresistive device for reading and an electromagnetic transducer device for writing, and a heating element provided in the head body part. The heating element has an up portion meandering between an origin and a halfway point and a down portion meandering along the up portion from the halfway point to an end positioned in the vicinity of the origin, and adapted to generate heat when energized.

10. 发明授权

US06965496B2 Thin film magnetic head, magnetic head device and magnetic recording/reproducing device 失效
标题翻译：薄膜磁头，磁头装置和磁记录/再现装置
公开(公告)号：US06965496B2
公开(公告)日：2005-11-15
申请号：US10667337
申请日：2003-09-23
申请人： Noboru Yamanaka
发明人： Noboru Yamanaka
IPC分类号： G11B5/31 , G11B5/39 , G11B5/147
CPC分类号： G11B5/3967 , G11B5/3116 , G11B5/313 , G11B5/3133 , G11B5/3166 , G11B5/3903
摘要： In a first magnetic film, two notches are formed separately by a given distance, and a first pole piece is located between the notches. The first pole piece includes a uniform width portion. A second magnetic film includes a second pole piece. In the first pole piece, if the height of the uniform width portion is defined by “TH1”, and the depth of the uniform width portion to a top surface from a base plane of the first magnetic film is defined by “ND1”, and the thickness of said gap film is defined by “WG”, the relations of TH1≧4WG and ND1≧4WG are satisfied.
摘要翻译：在第一磁性膜中，两个凹口分开形成给定距离，第一极片位于凹口之间。第一极片包括均匀的宽度部分。第二磁性膜包括第二极片。在第一极片中，如果均匀宽度部分的高度由“TH1”定义，并且从第一磁性膜的基面到顶表面的均匀宽度部分的深度由“ND1”定义，并且所述间隙膜的厚度由“WG”定义，满足TH1> = 4WG和ND1> = 4WG的关系。

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