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    • 41. 发明专利
    • Slider for disk drive, disk drive, and manufacturing method thereof
    • 用于磁盘驱动器,磁盘驱动器的滑动器及其制造方法
    • JP2010282716A
    • 2010-12-16
    • JP2010127502
    • 2010-06-03
    • Hitachi Global Storage Technologies Netherlands Bvヒタチグローバルストレージテクノロジーズネザーランドビーブイ
    • RUIZ OSCAR J
    • G11B21/21G11B5/60G11B21/10
    • G11B5/6005
    • PROBLEM TO BE SOLVED: To provide a slider air bearing for a disk drive.
      SOLUTION: The slider is designed to reduce fly height sigma in a plurality of fly media is provided. The slider includes an air bearing surface, a front shallow step pad and a rear shallow step pad that are at a first level deeper than the air bearing surface. The slider further includes a first rear side pocket that is at a second level deeper than the air bearing surface, the first side pocket substantially polygon shaped and a second rear non-symmetrical side pocket non-symmetrical with the first rear side pocket that is at the second level deeper than the air bearing surface, the second side pockets substantially polygon shaped wherein the second rear non-symmetrical side pocket comprises a larger volume than the first rear side pocket.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种用于磁盘驱动器的滑块空气轴承。

      解决方案:滑块被设计成减少多个飞行介质中的飞行高度西格玛。 滑块包括位于比空气轴承表面更深的第一水平处的空气轴承表面,前浅阶梯垫和后浅台阶垫。 所述滑块还包括第一后​​侧袋,所述第一后侧袋位于比所述空气支承表面更深的第二水平处,所述第一侧袋基本上为多边形形状,以及第二后侧非对称侧袋与所述第一后侧袋不对称 所述第二水平面比所述空气轴承表面更深,所述第二侧袋基本上是多边形的,其中所述第二后部非对称侧袋包括比所述第一后侧袋更大的体积。 版权所有(C)2011,JPO&INPIT

    • 43. 发明专利
    • Disk apparatus and method for detecting contact between head slider and disk
    • 用于检测头滑块和盘之间的接触的盘装置和方法
    • JP2010250900A
    • 2010-11-04
    • JP2009099444
    • 2009-04-15
    • Hitachi Global Storage Technologies Netherlands Bvヒタチグローバルストレージテクノロジーズネザーランドビーブイ
    • SHIMIZU HIROKIJO KINKOKUKODAIRA HIDEKAZUKUROKI KENJI
    • G11B21/21
    • PROBLEM TO BE SOLVED: To solve the problem that contact between a slider and a disk cannot be detected in a magnetic disk apparatus due to small vibration of the slider generated when a contact occurs.
      SOLUTION: A slider 13 is finely vibrated in a slider flying height direction and/or in an off-track direction to induce resonance of a head gimbal assembly 27. In this state, a contact between the slider 13 and a magnetic disk 2 is detected, to reliably detect a contact between the slider 13 and a lubricant layer 31 applied to a surface of the magnetic disk 2, with high sensitivity. Contact can be detected before start of a solid contact between the slider 13 and the magnetic disk 2, and a vibration in the off-track direction is detected. Therefore, the contact between the slider 13 and the magnetic disk 2 can be detected with high accuracy without impairing the reliability of head-disk interface.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 解决问题:为了解决由于在发生接触时产生的滑块的小振动而在磁盘装置中无法检测到滑块和盘之间的接触的问题。 解决方案:滑块13在滑块飞行高度方向和/或偏离轨道方向上精细振动,以引起磁头万向架组件27的共振。在该状态下,滑块13与磁盘 2,以高灵敏度可靠地检测滑块13和施加到磁​​盘2的表面的润滑剂层31之间的接触。 可以在滑块13和磁盘2之间的固体接触开始之前检测到接触,并且检测出偏离磁道方向的振动。 因此,可以高精度地检测滑块13和磁盘2之间的接触,而不损害磁头 - 磁盘接口的可靠性。 版权所有(C)2011,JPO&INPIT
    • 44. 发明专利
    • Magnetic recording device
    • 磁记录装置
    • JP2010250899A
    • 2010-11-04
    • JP2009099443
    • 2009-04-15
    • Hitachi Global Storage Technologies Netherlands Bvヒタチグローバルストレージテクノロジーズネザーランドビーブイ
    • NISHIYAMA NOBUMASAMARUYAMA YOJIMOCHIZUKI MASABUMI
    • G11B5/31G11B5/02
    • PROBLEM TO BE SOLVED: To provide such a device that since high density and large capacity magnetic recording is performed, influence by a write-in magnetic pole is less, further, a stronger recording assist electromagnetic field is generated.
      SOLUTION: A magnetic head 1 has a magnetic pole 11 generating a recording magnetic field, and a pair of opposite electrodes 10, 12 generating an assist electromagnetic field. An insulation layer exists between two electrodes being a pair of opposite electrodes, and these function as a capacitor. The pair of opposite electrodes generate a high frequency wave electromagnetic field, and assist magnetization direction change by the recording magnetic field generated by the magnetic pole. Inductance elements 64, 65 are arranged on transmission lines 60, 61 transmitting electric power to the pair of opposite electrodes from input terminals 62, 63 of a slider. This inductance element is connected in series to the pair of opposite electrodes. The magnetic disk device generates an assist electromagnetic field by utilizing LC series resonance.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供这样的装置,即由于进行了高密度和大容量的磁记录,所以通过写入磁极的影响较小,此外,产生更强的记录辅助电磁场。 解决方案:磁头1具有产生记录磁场的磁极11和产生辅助电磁场的一对相对电极10,12。 在两个电极之间存在绝缘层,这两个电极是一对相对的电极,并且它们用作电容器。 一对相对电极产生高频电磁场,并且由磁极产生的记录磁场辅助磁化方向改变。 电感元件64,65布置在从滑块的输入端子62,63向一对相对电极传输电力的传输线60,61上。 该电感元件与一对相对电极串联连接。 磁盘装置利用LC串联谐振产生辅助电磁场。 版权所有(C)2011,JPO&INPIT
    • 45. 发明专利
    • Magnetic anisotropy multilayer structure
    • 磁性各向异性多层结构
    • JP2010231880A
    • 2010-10-14
    • JP2010055957
    • 2010-03-12
    • Hitachi Global Storage Technologies Netherlands Bvヒタチグローバルストレージテクノロジーズネザーランドビーブイ
    • HAUET THOMASHELLWIG OLAVSCHABES MANFRED ERNST
    • G11B5/66G11B5/64G11B5/65G11B5/667
    • G11B5/855B82Y10/00G11B5/743G11B5/82
    • PROBLEM TO BE SOLVED: To provide a magnetic anisotropy multilayer structure which controls an inversion mechanism to make inversion magnetic distribution in a bit pattern medium strict. SOLUTION: The magnetic anisotropy multilayer structure where an inversion mechanism is controlled to make inversion magnetic distribution in the bit pattern medium strict, is disclosed. A concept of an exchangeable spring is enlarged to a concept that is a more variable and finer structure. At least three layers having different anisotropies or anisotropy inclinations increase a writable gain so as to exceed a concept of a simple hard/soft double layer exchangeable spring of BPM. This structure includes a highly anisotropic center layer that is thin and very hard and functions as a threshold of propagation of a magnetic domain wall across the entire structure of the medium or as a pining layer. In addition thereto or instead thereof, a low anisotropic center layer that is thin and very soft and arranged between a soft surface layer that is typically used and the hard medium layer enables the magnetic domain wall to initially and rapidly propagate into the center of the medium structure. Use of a further highly anisotropic multilayer stack enables the various characteristics of the medium structure to be adjusted more independently, thereby allowing optimization. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种磁性各向异性多层结构,其控制反转机制以使位图模式介质中的反转磁分布严格。 解决方案:公开了一种反转机制被控制以使位图形介质中的反转磁分布严格的磁各向异性多层结构。 可交换弹簧的概念被扩大到一个更为可变和更精细的结构的概念。 具有不同各向异性或各向异性倾角的至少三层增加了可写增益,以便超过BPM的简单硬/软双层可更换弹簧的概念。 该结构包括高度各向异性的中心层,其薄且非常硬,并且用作磁畴壁跨过介质的整个结构或作为衬层的传播阈值。 除此之外还是替代地,薄的且非常柔软并且布置在通常使用的软表面层和硬介质层之间的低各向异性中心层使得磁畴壁能够初始并快速地传播到介质的中心 结构体。 使用另外的高度各向异性的多层叠层能够更加独立地调节介质结构的各种特性,从而允许优化。 版权所有(C)2011,JPO&INPIT
    • 49. 发明专利
    • Disk drive and control method thereof
    • 磁盘驱动器及其控制方法
    • JP2010146614A
    • 2010-07-01
    • JP2008320330
    • 2008-12-16
    • Hitachi Global Storage Technologies Netherlands Bvヒタチグローバルストレージテクノロジーズネザーランドビーブイ
    • WADA TOSHIAKIRI TOGENSUN XIAOTIANHUANG FU-YING
    • G11B21/10
    • G11B19/042
    • PROBLEM TO BE SOLVED: To reduce the number of components and to improve vibration detection for control in a disk drive for performing control corresponding to vibrations.
      SOLUTION: An HDD has a vibration sensor 25, and uses an output value of the vibration sensor and corrects servo control of head positioning. The HDD monitors an output of a frequency band including an inherent resonance frequency of the vibration sensor, and performs processing corresponding to abnormal vibrations, such as a shock and excessive vibrations. The vibration sensor has a high sensitivity in the resonance frequency. Therefore, an output of the vibration sensor in the resonance frequency even to a small shock becomes large so that an external shock can be detected with high accuracy. The vibration sensor also shows a large output in the resonance frequency to excessive vibrations of a low frequency. Therefore, the vibration sensor can effectively correspond to abnormal vibrations, such as excessive vibrations in a low frequency.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了减少对于振动的控制,减少用于磁盘驱动器中的控制的部件数量和改进振动检测。 解决方案:HDD具有振动传感器25,并且使用振动传感器的输出值,并且校正磁头定位的伺服控制。 HDD监视包括振动传感器的固有谐振频率的频带的输出,并且执行对应于诸如冲击和过度振动的异常振动的处理。 振动传感器在谐振频率上具有高灵敏度。 因此,振动传感器在谐振频率甚至小的冲击中的输出变大,从而可以高精度地检测外部冲击。 振动传感器在谐振频率上也表现出较大的输出,使其频率过低。 因此,振动传感器可以有效地对应于异常振动,例如低频下的过度振动。 版权所有(C)2010,JPO&INPIT