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33 条记录 (耗时 0.024 秒)

    Method for error correction and circuit for realizing same
    13.
    发明授权
    Method for error correction and circuit for realizing same 失效
    误差校正方法及其实现方法

    公开(公告)号：US5325364A

    公开(公告)日：1994-06-28

    申请号：US412514

    申请日：1989-09-26

    申请人： Yasuhide Ouchi ,  Hajime Aoi ,  Yoshihisa Kamo ,  Yosuke Seo ,  Hitoshi Kakuta

    发明人： Yasuhide Ouchi ,  Hajime Aoi ,  Yoshihisa Kamo ,  Yosuke Seo ,  Hitoshi Kakuta

    IPC分类号： G06F11/10 ,  G06F11/14 ,  H03M13/00 ,  G06F11/00

    CPC分类号： G06F11/1076 ,  G06F11/1008 ,  G06F11/1443

    摘要： An error correction circuit which includes a specification circuit for specifying erroneous portions in a first data set reproduced from a recording medium, a register for storing the reproduced first data set including the erroneous portions thus specified and a reproducing circuit responsive to the reproduced first data set for reproducing again the first data set from the recording medium to obtain retry data, when there exist erroneous portions in the reproduced first data set stored in the register. The correction circuit also includes a data replace circuit, connected to receive the retry data, for replacing information at the specified erroneous portions in the reproduced first data set stored in the register by information at corresponding portions in the retry data.

    摘要翻译： 一种误差校正电路，包括用于指定从记录介质再现的第一数据组中的错误部分的指定电路，用于存储包括如此指定的错误部分的再现的第一数据组的寄存器和响应于再现的第一数据集的再现电路 当存储在寄存器中的再现的第一数据组中存在错误部分时，再次从记录介质再现第一数据组以获得重试数据。 校正电路还包括连接以接收重试数据的数据替换电路，用于通过重试数据中的相应部分处的信息替换存储在寄存器中的再现的第一数据集中的指定错误部分处的信息。

    High speed seek sector servo magnetic disk drive unit
    14.
    发明授权
    High speed seek sector servo magnetic disk drive unit 失效
    高速搜索扇区伺服磁盘驱动单元

    公开(公告)号：US5132854A

    公开(公告)日：1992-07-21

    申请号：US408197

    申请日：1989-09-15

    申请人： Toshiaki Tsuyoshi ,  Yosuke Seo ,  Hajime Aoi

    发明人： Toshiaki Tsuyoshi ,  Yosuke Seo ,  Hajime Aoi

    IPC分类号： G11B21/08 ,  G11B5/55

    CPC分类号： G11B5/5547 ,  G11B5/5565

    摘要： A disk drive unit is disclosed, which comprises a recording medium having more than two disk-shaped recording faces disposed on each other with an interval; information tracks disposed along the periphery on the more than two recording faces and servo signal fields on the recording faces, in the peripheral direction for different recording faces; more than two heads reading out servo information from the servo signal fields on the more than two recording faces; head moving means for moving the heads in the radial direction of the recording faces, linked with each other; means for obtaining position signals on the recording faces at different points of time for different heads on the basis of the servo signals; means for obtaining information on the relative velocity of the heads to the recording faces from the position signals at different points of time for different recording faces, and control means for effecting the velocity control by means of the head moving means on the basis of the information on the relative velocity.

    摘要翻译： 公开了一种磁盘驱动单元，其包括具有多于两个盘形记录面的记录介质，所述记录介质以间隔彼此配置; 信息轨道沿着周边设置在记录面上的两个以上记录面和伺服信号场，沿着不同记录面的周边方向; 两个以上的磁头从两个以上的记录面的伺服信号场读出伺服信息; 头部移动装置，用于使记录面的径向移动头部; 用于根据所述伺服信号在不同的时刻针对记录面获取位置信号的装置; 用于从针对不同记录面的不同时间点的位置信号获得关于头到记录面的相对速度的信息的装置，以及用于通过头部移动装置基于信息进行速度控制的控制装置 相对速度。

    Read channel for magnetic recording
    16.
    发明授权
    Read channel for magnetic recording 失效
    读取磁记录通道

    公开(公告)号：US4774601A

    公开(公告)日：1988-09-27

    申请号：US940494

    申请日：1986-12-10

    申请人： Yasuhide Ouchi ,  Hajime Aoi ,  Takashi Tamura ,  Nobumasa Nishiyama

    发明人： Yasuhide Ouchi ,  Hajime Aoi ,  Takashi Tamura ,  Nobumasa Nishiyama

    IPC分类号： G11B5/09 ,  G11B20/10

    CPC分类号： G11B20/10009 ,  G11B20/10

    摘要： In a read channel for magnetic recording used to reproduce information recorded on a magnetic recording medium, a signal reproduced from a magnetic head and a differentiated signal of the reproduction signal are ORed together to produce a gate signal. By using the gate signal, the information can be reproduced correctly.

    摘要翻译： 在用于再现记录在磁记录介质上的信息的用于磁记录的读取通道中，从磁头再现的信号和再现信号的微分信号被或者并联在一起以产生一个门信号。 通过使用门信号，可以正确地再现信息。

    Magnetic thin film and method for forming the film, and magnetic thin film-applied device
    17.
    发明授权
    Magnetic thin film and method for forming the film, and magnetic thin film-applied device 有权
    磁性薄膜和薄膜形成方法以及磁性薄膜施加装置

    公开(公告)号：US08076012B2

    公开(公告)日：2011-12-13

    申请号：US12510878

    申请日：2009-07-28

    申请人： Takehito Shimatsu ,  Hideo Sato ,  Osamu Kitakami ,  Satoshi Okamoto ,  Hajime Aoi ,  Hiroyasu Kataoka

    发明人： Takehito Shimatsu ,  Hideo Sato ,  Osamu Kitakami ,  Satoshi Okamoto ,  Hajime Aoi ,  Hiroyasu Kataoka

    IPC分类号： G11B5/65

    CPC分类号： G11B5/656 ,  B82Y25/00 ,  G11B5/65 ,  G11B5/82 ,  H01F10/16 ,  H01F10/3254 ,  H01F10/3286 ,  H01F41/18 ,  H01L43/08 ,  H01L43/10 ,  H01L43/12 ,  Y10T428/115 ,  Y10T428/32

    摘要： Disclosed are a magnetic thin film capable of providing a high uniaxial magnetic anisotropy, Ku, while suppressing the saturation magnetization Ms thereof, and a method for forming the film; and also disclosed are various devices to which the magnetic thin film is applied. The magnetic thin film comprises a Co-M-Pt alloy having an L11-type ordered structure (wherein M represents one or more metal elements except Co and Pt). For example, the Co-M-Pt alloy is a Co—Ni—Pt alloy of which the composition comprises from 10 to 35 at. % of Co, from 20 to 55 at. % of Ni and a balance of Pt. The magnetic thin film is applicable to perpendicular magnetic recording media, tunnel magneto-resistance (TMR) devices, magnetoresistive random access memories (MRAM), microelectromechanical system (MEMS) devices, etc.

    摘要翻译： 公开了能够提供高的单轴磁各向异性Ku的磁性薄膜，同时抑制其饱和磁化强度Ms，以及形成膜的方法; 并且还公开了施加磁性薄膜的各种装置。 磁性薄膜包括具有L11型有序结构的Co-M-Pt合金（其中M表示除了Co和Pt之外的一种或多种金属元素）。 例如，Co-M-Pt合金是Co-Ni-Pt合金，其组成包含10至35at。 Co的百分比，从20到55。 Ni的百分比和Pt的余量。 磁性薄膜适用于垂直磁记录介质，隧道磁阻（TMR）器件，磁阻随机存取存储器（MRAM），微机电系统（MEMS）器件等。

    Magnetic disk apparatus of constant-density recording type, magnetic disk used therefor and servo-writing device for patterning on the magnetic disk
    19.
    发明授权
    Magnetic disk apparatus of constant-density recording type, magnetic disk used therefor and servo-writing device for patterning on the magnetic disk 失效
    恒定密度记录型磁盘装置，用于其的磁盘和用于在磁盘上图形化的伺服写入装置

    公开(公告)号：US5193034A

    公开(公告)日：1993-03-09

    申请号：US551808

    申请日：1990-07-12

    申请人： Toshiaki Tsuyoshi ,  Yosuke Seo ,  Hajime Aoi ,  Makoto Saito

    发明人： Toshiaki Tsuyoshi ,  Yosuke Seo ,  Hajime Aoi ,  Makoto Saito

    IPC分类号： G11B5/596 ,  G11B20/12 ,  G11B27/30

    CPC分类号： G11B5/59633 ,  G11B20/1217 ,  G11B20/1258 ,  G11B27/3027 ,  G11B2020/1282 ,  G11B2220/20 ,  G11B5/59655

    摘要： A constant-density type of magnetic disk apparatus is made up of a plurality of magnetic disks, wherein at least one of the surfaces of the magnetic disks is a servo face divided into a plurality of zones in the radial direction of the disks. A magnetic disk used in this apparatus and a servo-writing device for making this magnetic disk are also disclosed. In the magnetic disk apparatus and the magnetic disk, servo information regions and clock information regions are alternately provided on the servo face in the circumferential direction of the disks. The servo information regions are arranged radially with respect to the rotation center of the disks and each of the clock information regions includes a plurality of magnetic transitions representative of clocks, the number of which is different for each of the divided zones. A servo PLL circuit is provided to generate a servo clock signal on the basis of the signal reproduced from each of the servo information regions, and a write PLL is also provided to generate a write clock signal on the basis of the signal reproduced from each of the clock information regions. Also disclosed is a disk for use in a constant density-recording type magnetic disk apparatus, wherein a dummy track is provided along a zone boundary on the data face embedded with servo patterns of the disk.

    摘要翻译： 恒定密度型的磁盘装置由多个磁盘构成，其中磁盘的至少一个表面是在盘的径向方向上分成多个区域的伺服面。 本发明还公开了一种用于本装置的磁盘和用于制造该磁盘的伺服写入装置。 在磁盘装置和磁盘中，伺服信息区域和时钟信息区域在盘的圆周方向上的伺服面上交替地设置。 伺服信息区域相对于盘的旋转中心径向地布置，并且每个时钟信息区域包括表示每个分割区域的数量不同的多个时钟的磁跃迁。 提供伺服PLL电路以根据从每个伺服信息区再现的信号产生伺服时钟信号，并且还提供写入PLL以根据从每个伺服信息区再现的信号来产生写入时钟信号 时钟信息区。 还公开了一种在恒定密度记录型磁盘装置中使用的盘，其中沿着镶嵌有盘的伺服图案的数据面上的区域边界设置虚拟轨道。