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1. 发明申请

US20080186629A1 Method of producing a magnetic disk device with servo data recorded on magnetic disk, head amplifier for magnetic disk device and disk device 审中-公开
标题翻译：制造具有记录在磁盘上的伺服数据的磁盘装置的方法，用于磁盘装置的磁头放大器和磁盘装置
公开(公告)号：US20080186629A1
公开(公告)日：2008-08-07
申请号：US12009215
申请日：2008-01-16
申请人： Takehiko Hamaguchi , Yukiya Shimizu , Satoshi Ohki , Hideaki Maeda
发明人： Takehiko Hamaguchi , Yukiya Shimizu , Satoshi Ohki , Hideaki Maeda
IPC分类号： G11B5/33
CPC分类号： G11B5/59633 , G11B5/59666
摘要： Embodiments of the present invention provide a method of producing a magnetic disk device in which a plurality of heads can appropriately record servo data on a magnetic disk. The method of producing the magnetic disk device according to one embodiment includes the steps of: attaching a magnetic disk, a plurality of heads and head amplifier circuit to the magnetic disk device; and recording the servo data input through the head amplifier circuit with the plurality of heads on the magnetic disk all at once; wherein the head amplifier circuit includes a plurality of amplifiers provided corresponding to the plurality of heads respectively and a plurality of registers which is provided corresponding to the plurality of amplifiers respectively and holds set values determining the amplification of the amplifiers, and the step of recording the servo data is conducted with the plurality of registers included in the head amplifier circuit individually set.
摘要翻译：本发明的实施例提供一种制造磁盘装置的方法，其中多个磁头可以将伺服数据适当地记录在磁盘上。根据一个实施例的制造磁盘装置的方法包括以下步骤：将磁盘，多个磁头和磁头放大器电路连接到磁盘装置; 并且通过头放大器电路输入的伺服数据与多个磁头一起记录在磁盘上; 其中所述头放大器电路包括分别与所述多个磁头相对应地设置的多个放大器和分别对应于所述多个放大器设置的多个寄存器，并且保持确定放大器的放大的设定值，以及记录伺服数据与包括在头放大器电路中的多个寄存器分别设置一起进行。

2. 发明申请

US20080186609A1 Data recording device and control method of same 有权
标题翻译：数据记录装置及其控制方法相同
公开(公告)号：US20080186609A1
公开(公告)日：2008-08-07
申请号：US12006641
申请日：2008-01-04
申请人： Kazuhiko Akiba
发明人： Kazuhiko Akiba
IPC分类号： G11B27/36
CPC分类号： G11B27/36 , G06F3/0614 , G06F3/0656 , G06F3/0674 , G11B2220/2516 , G11B2220/40
摘要： Embodiments of the present invention provide a data recording device that allows swift data access even under the state that data access is difficult, and a control method for the device. According to one embodiment, when receiving a data reading command from an external host in the state that a reading-difficult state is being detected, a Microprocessing Unit/Hard Disk Controller (MPU/HDC) of a magnetic disk device reads data related to the reading command from a magnetic disk for transmission to an external host and recording into a memory. Thereafter, when receiving another reading command from the external host for the same data, the data is read from the memory for transmission to the external host.
摘要翻译：本发明的实施例提供了即使在难以进行数据访问的状态下也允许快速数据访问的数据记录装置以及该装置的控制方法。根据一个实施例，当在检测到读取难度状态的状态下从外部主机接收到数据读取命令时，磁盘装置的微处理单元/硬盘控制器（MPU / HDC）读取与从磁盘读取命令以传输到外部主机并记录到存储器中。此后，当从外部主机接收到相同数据的另一读取命令时，从存储器读取数据以传送到外部主机。

3. 发明申请

US20080112299A1 Magnetic disk drive 审中-公开
标题翻译：磁盘驱动器
公开(公告)号：US20080112299A1
公开(公告)日：2008-05-15
申请号：US11985123
申请日：2007-11-13
申请人： Toshihiko Shimizu , Keiko Watanabe
发明人： Toshihiko Shimizu , Keiko Watanabe
IPC分类号： G11B33/02
CPC分类号： G11B33/1466 , G11B33/1433
摘要： Embodiments of present invention help to realize a highly reliable magnetic disk drive by preventing a positional displacement between a magnetic head and a target track by decreasing restricting forces that a cover exerts on a base when the temperature is increased. According to one embodiment, a base is formed by aluminum die casting, has a concave, rectangular parallelepiped shape, and is formed with step portions at the four corners. A cover is a flat plate of stainless steel or iron. Four corner portions of the cover are bent to form step portions. The cover is fixed to the base at the four corners with bolts at two side positions (six positions in total). A gasket is inserted at that time to enhance the sealing performance. Since the gasket is a member like a rubber packing, it is necessary to press the gasket with the flat portions of the base and the cover To this end, the gasket is placed on top of the base step portions and the connection between the cover and the base at the four corners is made under the base step portions.
摘要翻译：本发明的实施例有助于通过在温度升高时通过减小盖施加在基座上的限制力来防止磁头和目标轨道之间的位置偏移来实现高度可靠的磁盘驱动。根据一个实施例，基座由铝压铸形成，具有凹形的长方体形状，并且在四个角部形成有台阶部分。盖是不锈钢或铁的平板。盖的四个角部弯曲以形成台阶部。盖子通过两个侧面位置的螺栓（总共六个位置）固定在四个角落的基座上。此时插入垫圈以增强密封性能。由于垫圈是像橡胶垫片的构件，因此需要用基座和盖子的平坦部分按压垫圈。为此，垫圈被放置在基座台阶部分的顶部，盖子和在四个角落处的基部形成在基底台阶部下方。

4. 发明申请

US20070253100A1 Magnetic disk drive 失效
标题翻译：磁盘驱动器
公开(公告)号：US20070253100A1
公开(公告)日：2007-11-01
申请号：US11796228
申请日：2007-04-26
申请人： Hiroshi Uchida , Isao Yoneda , Hideki Ohzeki
发明人： Hiroshi Uchida , Isao Yoneda , Hideki Ohzeki
IPC分类号： G11B5/596
CPC分类号： G11B5/5526
摘要： Embodiments in accordance with the present invention provide a magnetic disk drive with reduced noise during seek operation without causing any delay in control response. According to one embodiment of the present invention, a control circuit of a magnetic disk drive controls the drive power supplied to a voice coil motor during a seek operation adapted to move a magnetic head over a target track formed on a magnetic disk so as to bring the travel speed of the magnetic head close to a predetermined target speed. The control circuit determines a provisional current according to the difference between the predetermined target speed and an actual travel speed in an acceleration zone adapted to accelerate the magnetic head to the predetermined target speed. If the provisional current exceeds a limit specified in relation to an elapsed time from the start of acceleration, the control circuit sets the limit as the current of the drive power supplied to the voice coil motor to control the motor.
摘要翻译：根据本发明的实施例提供一种在寻道操作期间具有降低的噪声的磁盘驱动器，而不会导致控制响应的任何延迟。根据本发明的一个实施例，磁盘驱动器的控制电路在搜索操作期间控制提供给音圈电机的驱动电力，以便将磁头移动到形成在磁盘上的目标磁道上，以便带动磁头的行进速度接近预定的目标速度。控制电路根据预定目标速度与适于将磁头加速到预定目标速度的加速区域中的实际行驶速度之间的差异来确定临时电流。如果临时电流超过关于从加速开始起的经过时间规定的限制，则控制电路将限制设定为作为提供给音圈电动机的驱动电力的电流以控制电动机。

5. 发明申请

US20070253095A1 Pattern write method and demagnetization state determination method 审中-公开
标题翻译：图案写入方法和去磁状态确定方法
公开(公告)号：US20070253095A1
公开(公告)日：2007-11-01
申请号：US11796516
申请日：2007-04-26
申请人： Kazuhiko Washizu , Atsushi Takeichi , Masashi Murayama , Takaaki Ogita
发明人： Kazuhiko Washizu , Atsushi Takeichi , Masashi Murayama , Takaaki Ogita
IPC分类号： G11B5/596 , G11B5/03 , G11B21/02
CPC分类号： G11B5/024 , G11B5/59666
摘要： Embodiments in accordance with the present invention control pitch variations that are not observed in self servo write (SSW). According to one embodiment of the present invention, an outer radius side area of a magnetic disk is erased using an external magnetic field, and an inner radius side area is subjected to self erase using a head. The magnetization state in the base of the inner radius side area is different from that of the outer radius side area before pattern writing. Therefore, in the inner radius side area and the outer radius side area, even if a radial pattern of the same pitch is read, the different APCs are measured. With SSW of this embodiment, a reference APC used in the inner radius side area is different from that used in the outer radius side area. In this manner, the pitch variation is prevented.
摘要翻译：根据本发明的实施例控制在自伺服写入（SSW）中未观察到的音调变化。根据本发明的一个实施例，使用外部磁场擦除磁盘的外半径侧区域，并且使用磁头对内半径侧区域进行自擦除。在内部半径侧区域的基部中的磁化状态与图案写入之前的外半径侧区域的磁化状态不同。因此，在内半径侧区域和外半径侧区域中，即使读取了相同节距的径向图案，也测量不同的APC。在本实施方式的SSW中，内径侧区域使用的基准APC与外径侧区域不同。以这种方式，可以防止间距变化。

6. 发明申请

US20050024790A1 Current perpendicular to the planes (CPP) sensor with a highly conductive cap structure 有权
标题翻译：电流垂直于具有高导电帽结构的平面（CPP）传感器
公开(公告)号：US20050024790A1
公开(公告)日：2005-02-03
申请号：US10630817
申请日：2003-07-29
申请人： Mustafa Pinarbasi
发明人： Mustafa Pinarbasi
IPC分类号： G11B5/127 , G11B5/33
CPC分类号： G11B5/127
摘要： A magnetic read head has a current perpendicular to the planes (CPP) sensor with a top cap layer that is ruthenium (Ru) or rhodium (Rh) or a top cap layer structure which includes a first layer of tantulum (Ta) only, a second layer of ruthenium (Ru), rhodium (Rh) or gold (Au) with the first layer being located between a spacer layer and the second layer.
摘要翻译：磁读头具有垂直于平面（CPP）传感器的电流，其顶盖层为钌（Ru）或铑（Rh）或顶盖层结构，其仅包括第一层（Ta），第第二层钌（Ru），铑（Rh）或金（Au），其中第一层位于间隔层和第二层之间。

7. 发明申请

US20050017314A1 Spin valve transistor with self-pinned antiparallel pinned layer structure 失效
标题翻译：具有自固定反平行钉扎层结构的自旋阀晶体管
公开(公告)号：US20050017314A1
公开(公告)日：2005-01-27
申请号：US10627293
申请日：2003-07-25
申请人： Hardayal Gill
发明人： Hardayal Gill
IPC分类号： G11B5/39 , H01F10/32 , H01L29/66 , H01L43/08 , H01L29/82
CPC分类号： B82Y10/00 , G11B5/3906 , H01F10/3272 , H01F10/3286 , H01F10/329 , H01L29/66984 , H01L43/08
摘要： A spin valve transistor includes an emitter, a collector, a base between the emitter and the collector, a spin valve which includes a free layer structure, a self-pinned antiparallel (AP) pinned layer structure and a nonmagnetic spacer layer between the free layer structure and the AP pinned layer structure wherein the base includes at least the free layer structure.
摘要翻译：自旋阀晶体管包括发射极，集电极，发射极和集电极之间的基极，包括自由层结构的自旋阀，自固定反平行（AP）钉扎层结构和自由层之间的非磁性间隔层结构和AP钉扎层结构，其中基部至少包括自由层结构。

8. 发明申请

US20090196488A1 DENSITY MULTIPLICATION AND IMPROVED LITHOGRAPHY BY DIRECTED BLOCK COPOLYMER ASSEMBLY 有权
标题翻译：通过方向块式共聚物组件的密度乘法和改进的光刻
公开(公告)号：US20090196488A1
公开(公告)日：2009-08-06
申请号：US12329484
申请日：2008-12-05
申请人： Paul Franklin NEALEY , Huiman Kang , Francois Detcheverry , Juan J. De Pablo , Ricardo Ruiz , Thomas Albrecht
发明人： Paul Franklin NEALEY , Huiman Kang , Francois Detcheverry , Juan J. De Pablo , Ricardo Ruiz , Thomas Albrecht
IPC分类号： G06K9/00
CPC分类号： G11B5/84 , B81C1/00031 , B81C2201/0149 , B82Y10/00 , B82Y30/00 , B82Y40/00 , G03F7/0002 , G11B5/743 , G11B5/746 , G11B5/82 , G11B5/855
摘要： Methods to pattern substrates with dense periodic nanostructures that combine top-down lithographic tools and self-assembling block copolymer materials are provided. According to various embodiments, the methods involve chemically patterning a substrate, depositing a block copolymer film on the chemically patterned imaging layer, and allowing the block copolymer to self-assemble in the presence of the chemically patterned substrate, thereby producing a pattern in the block copolymer film that is improved over the substrate pattern in terms feature size, shape, and uniformity, as well as regular spacing between arrays of features and between the features within each array compared to the substrate pattern. In certain embodiments, the density and total number of pattern features in the block copolymer film is also increased. High density and quality nanoimprint templates and other nanopatterned structures are also provided.
摘要翻译：提供了结合自上而下的平版印刷工具和自组装嵌段共聚物材料的致密的周期性纳米结构的衬底图案化方法。根据各种实施方案，所述方法包括对基材进行化学图案化，在化学图案化的成像层上沉积嵌段共聚物膜，并且允许嵌段共聚物在化学图案化的基底存在下自组装，从而在嵌段中产生图案共聚物膜的特征尺寸，形状和均匀性以及特征阵列之间的规则间隔以及与衬底图案相比的每个阵列之间的特征之间的衬底图案的改进。在某些实施方案中，嵌段共聚物膜中的图案特征的密度和总数也增加。还提供了高密度和高质量的纳米压印模板和其他纳米图案结构。

9. 发明申请

US20080113225A1 Perpendicular magnetic recording medium and method for manufacturing the same 审中-公开
标题翻译：垂直磁记录介质及其制造方法
公开(公告)号：US20080113225A1
公开(公告)日：2008-05-15
申请号：US11983576
申请日：2007-11-09
申请人： Kiwamu Tanahashi , Yoshibumi Matsuda , Mineaki Kodama , Koji Sakamoto , Tomoo Yamamoto , Joe Inagaki
发明人： Kiwamu Tanahashi , Yoshibumi Matsuda , Mineaki Kodama , Koji Sakamoto , Tomoo Yamamoto , Joe Inagaki
IPC分类号： G11B5/66 , G11B5/84
CPC分类号： G11B5/66 , G11B5/65 , G11B5/851
摘要： Fluctuation of read/write characteristics during mass production is suppressed for a perpendicular magnetic recording medium having a perpendicular recording layer of a bi-layered structure, in which a first Co—Cr—Pt alloy magnetic layer containing an oxide and a second Co—Cr—Pt magnetic layer are formed successively. According to one embodiment, in a perpendicular magnetic recording medium, an adhesion layer, a soft magnetic underlayer, a seed layer, an intermediate layer, a perpendicular recording layer, a protective layer, and a lubricating layer are successively formed on a substrate. The perpendicular recording layer has a bi-layered structure in which a first Co—Cr—Pt alloy magnetic layer containing an oxide and a second Co—Cr—Pt alloy magnetic layer containing a marker element for measurement of a thickness selected from Mo, Mn, and V are successively formed, and the content of the marker element for measurement of thickness is about 1.5 at % or more and about 5 at % or less.
摘要翻译：对于具有双层结构的垂直记录层的垂直磁记录介质，抑制了批量生产期间读/写特性的波动，其中含有氧化物的第一Co-Cr-Pt合金磁性层和第二Co-Cr - 磁层依次形成。根据一个实施例，在垂直磁记录介质中，在基板上依次形成粘合层，软磁性底层，种子层，中间层，垂直记录层，保护层和润滑层。垂直记录层具有双层结构，其中含有氧化物的第一Co-Cr-Pt合金磁性层和含有用于测量选自Mo，Mn的标记元素的第二Co-Cr-Pt合金磁性层，V依次形成，厚度测定用标记要素的含量为1.5at％以上约5at％以下。

10. 发明申请

US20070253117A1 Magnetic head and method for fabricating the same 有权
标题翻译：磁头及其制造方法
公开(公告)号：US20070253117A1
公开(公告)日：2007-11-01
申请号：US11788038
申请日：2007-04-17
申请人： Hisako Takei , Nobuo Yoshida , Hiroyuki Hoshiya , Taku Shintani
发明人： Hisako Takei , Nobuo Yoshida , Hiroyuki Hoshiya , Taku Shintani
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G01R33/093 , B82Y25/00 , G11B5/3163 , G11B5/398 , Y10T29/49021
摘要： Embodiments in accordance with the present invention provide a sensor to produce high output with a small track width. Particular embodiments include forming a magnetoresistive sensor of a read head to be substantially vertical in its upper portion and gently upwardly convexly curved in its lower portion.
摘要翻译：根据本发明的实施例提供一种用于产生具有小轨道宽度的高输出的传感器。具体实施例包括形成读头的磁阻传感器在其上部基本垂直并且在其下部中轻轻地向上凸起地弯曲。

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