公开(公告)号：US08009376B2

公开(公告)日：2011-08-30

申请号：US12283731

申请日：2008-09-12

申请人： Takahiro Saito ,  Kazunari Tsuchimoto ,  Atsushi Kanamaru

发明人： Takahiro Saito ,  Kazunari Tsuchimoto ,  Atsushi Kanamaru

IPC分类号： G11B5/09

CPC分类号： G11B20/1258 ,  G11B5/59644 ,  G11B20/22 ,  G11B2020/10916 ,  G11B2020/1238 ,  G11B2020/1244 ,  G11B2020/1292 ,  G11B2020/1294 ,  G11B2220/2516

摘要： Embodiments of the present invention help to improve the capacity and the performance of a disk drive device. According to one embodiment, a data track pitch is set to each recording surface. The recording surfaces are divided into bands. A hard disk drive (HDD) sequentially moves a head to an adjacent data track in a band and performs a head switch at the band end in its data accessing. On a recording surface, the number of data tracks in each band is variable; and each band is constituted by different number of data tracks as necessary. The number of data tracks in each band is set so that the radial position of the band end comes close to the radial position of the corresponding band end on another recording surface. Accordingly, even if the recording surfaces have different variation rates of the data track pitch in the radial direction, increase in process time due to head switches can be suppressed.

摘要翻译： 本发明的实施例有助于提高磁盘驱动装置的容量和性能。 根据一个实施例，将数据轨道间距设置到每个记录表面。 记录表面被分成带。 硬盘驱动器（HDD）顺序地将磁头移动到频带中的相邻数据磁道，并在其数据访问中在频带端执行磁头切换。 在记录表面上，每个频带中的数据轨迹数是可变的; 并且每个频带由必要的不同数量的数据轨道构成。 每个带中的数据轨道的数量被设置为使得带端的径向位置接近另一个记录表面上相应带端的径向位置。 因此，即使记录面在径向方向上具有不同的数据磁道间距的变化率，也可以抑制由磁头开关引起的处理时间的增加。

公开(公告)号：US20090080100A1

公开(公告)日：2009-03-26

申请号：US12283731

申请日：2008-09-12

申请人： Takahiro Saito ,  Kazunari Tsuchimoto ,  Atsushi Kanamaru

发明人： Takahiro Saito ,  Kazunari Tsuchimoto ,  Atsushi Kanamaru

IPC分类号： G11B5/09

CPC分类号： G11B20/1258 ,  G11B5/59644 ,  G11B20/22 ,  G11B2020/10916 ,  G11B2020/1238 ,  G11B2020/1244 ,  G11B2020/1292 ,  G11B2020/1294 ,  G11B2220/2516

摘要： Embodiments of the present invention help to improve the capacity and the performance of a disk drive device. According to one embodiment, a data track pitch is set to each recording surface. The recording surfaces are divided into bands. A hard disk drive (HDD) sequentially moves a head to an adjacent data track in a band and performs a head switch at the band end in its data accessing. On a recording surface, the number of data tracks in each band is variable; and each band is constituted by different number of data tracks as necessary. The number of data tracks in each band is set so that the radial position of the band end comes close to the radial position of the corresponding band end on another recording surface. Accordingly, even if the recording surfaces have different variation rates of the data track pitch in the radial direction, increase in process time due to head switches can be suppressed.

摘要翻译： 本发明的实施例有助于提高磁盘驱动装置的容量和性能。 根据一个实施例，将数据轨道间距设置到每个记录表面。 记录表面被分成带。 硬盘驱动器（HDD）顺序地将磁头移动到频带中的相邻数据磁道，并在其数据访问中在频带端执行磁头切换。 在记录表面上，每个频带中的数据轨迹数是可变的; 并且每个频带由必要的不同数量的数据轨道构成。 每个带中的数据轨道的数量被设置为使得带端的径向位置接近另一个记录表面上相应带端的径向位置。 因此，即使记录面在径向方向上具有不同的数据磁道间距的变化率，也可以抑制由磁头开关引起的处理时间的增加。

公开(公告)号：US20090128943A1

公开(公告)日：2009-05-21

申请号：US12290321

申请日：2008-10-28

申请人： Kazuyuki Ishibashi ,  Kazunari Tsuchimoto ,  Takahiro Saito ,  Osamu Takazawa

发明人： Kazuyuki Ishibashi ,  Kazunari Tsuchimoto ,  Takahiro Saito ,  Osamu Takazawa

IPC分类号： G11B27/36

CPC分类号： G11B19/048 ,  G11B5/455 ,  G11B20/182 ,  G11B2220/2516

摘要： Embodiments of the present invention help to improve test processes for hard disk drives (HDDs) and increase the manufacturing efficiency of HDDs. According to one embodiment, a test process performs a test on an HDD with respect to a plurality of items and stores one or a plurality of test results. Moreover, it determines the optimum specification category to which the HDD is to belong based on the stored test results. One factor of the specifications—storage capacity—has been determined before the test process or is determined during the test process. The test process classifies HDDs with the same storage capacity into different specification categories, and this classification may be performed in a single test process. This achieves efficient manufacture of HDDs with different specifications corresponding to the diversified usage of HDDs.

摘要翻译： 本发明的实施例有助于改进硬盘驱动器（HDD）的测试过程并提高HDD的制造效率。 根据一个实施例，测试过程相对于多个项目对HDD进行测试，并存储一个或多个测试结果。 此外，它根据存储的测试结果确定HDD所属的最佳规范类别。 规格存储容量的一个因素是在测试过程之前确定或在测试过程中确定的。 测试过程将具有相同存储容量的HDD分类为不同的规格类别，并且该分类可以在单个测试过程中执行。 这实现了与HDD的多样化使用相对应的不同规格的HDD的有效制造。

公开(公告)号：US20070058280A1

公开(公告)日：2007-03-15

申请号：US11521737

申请日：2006-09-14

申请人： Toshiaki Wada ,  Kazuyuki Ishibashi ,  Kazunari Tsuchimoto ,  Hideki Ohzeki

发明人： Toshiaki Wada ,  Kazuyuki Ishibashi ,  Kazunari Tsuchimoto ,  Hideki Ohzeki

IPC分类号： G11B21/02

CPC分类号： G11B5/54 ,  G11B5/6005 ,  G11B5/6064

摘要： Embodiments of the invention allow a heater to reduce the clearance between a head element section and the magnetic section while reducing the risk of collision between the head element section and the magnetic disk during load/unload. In one embodiment, an HDD judges whether a heater is ON or OFF after the load process is started. If the heater is found set to ON, the HDD sets the heater to OFF. With the heater kept OFF, the HDD starts the actuator pivoting. If the heater is found set to OFF, the HDD moves the actuator from the parking position to the magnetic disk with the heater kept OFF. Upon completion of the load process, the HDD goes to the subsequent process. Since the heater is OFF during load, the risk of collision between the head element section and the magnetic disk is reduced.

摘要翻译： 本发明的实施例允许加热器减小头元件部分和磁性部分之间的间隙，同时减少在装载/卸载期间头元件部分和磁盘之间的碰撞的风险。 在一个实施例中，HDD在加载处理开始之后判断加热器是ON还是OFF。 如果发现加热器设置为ON，则HDD将加热器设置为OFF。 当加热器关闭时，HDD启动执行机构的转动。 如果发现加热器设置为OFF，则HDD将致动器从停车位置移动到磁盘，加热器保持关闭状态。 在完成加载过程后，HDD进入后续处理。 由于在加载期间加热器为OFF，所以头元件部分和磁盘之间的碰撞风险降低。

公开(公告)号：US20060132954A1

公开(公告)日：2006-06-22

申请号：US11303771

申请日：2005-12-15

申请人： Toshiaki Wada ,  Kazunari Tsuchimoto ,  Kaoru Umemura

发明人： Toshiaki Wada ,  Kazunari Tsuchimoto ,  Kaoru Umemura

IPC分类号： G11B5/09

CPC分类号： G11B5/02 ,  G11B19/04 ,  G11B20/1217 ,  G11B20/1883 ,  G11B27/3027 ,  G11B27/322 ,  G11B2020/1298 ,  G11B2220/20 ,  G11B2220/2516

摘要： Embodiments of the invention prevent data loss due to very frequent writing onto adjacent data tracks. In one embodiment, an alternate zone made up of multiple adjacent data tracks is formed by setting data tracks whose usage is to be prohibited for every other data track. The data updated very frequently and data not updated too frequently are recorded in the alternate zone. Data tracks for recording the data updated very frequently, and data tracks for recording data not updated too frequently, each have one cylinder of spacing. Data loss due to leakage fluxes can thus be prevented.

摘要翻译： 本发明的实施例防止由于非常频繁地写入相邻数据轨道而导致的数据丢失。 在一个实施例中，由多个相邻数据磁道构成的交替区域是通过设置每隔一个数据磁道禁止其使用的数据磁道来形成的。 非常频繁地更新数据，并且不太频繁地更新数据被记录在备用区域中。 用于记录数据的数据轨道非常频繁地更新，并且用于记录数据的数据轨道不被更新太频繁，每个具有一个间隔的气缸。 因此可以防止由漏磁通引起的数据损失。

公开(公告)号：US07706096B2

公开(公告)日：2010-04-27

申请号：US12283479

申请日：2008-09-11

申请人： Hideaki Ito ,  Kazuyuki Ishibashi ,  Kazunari Tsuchimoto ,  Osamu Takazawa

发明人： Hideaki Ito ,  Kazuyuki Ishibashi ,  Kazunari Tsuchimoto ,  Osamu Takazawa

IPC分类号： G11B21/02

CPC分类号： G11B20/1816 ,  G11B20/10009 ,  G11B20/10481 ,  G11B2220/2516

摘要： Embodiments of the present invention help to increase the capacity and the reliability of a disk drive device to improve the manufacturing yield thereof. An embodiment of the present invention sets a data track pitch for each head slider (recording surface) in accordance with head characteristics. This method for specifying the data track pitch is based on the distance between erase band ends (EBEs) of the both adjacent data tracks. The erase band of a data track is a band defined as the area where the already written data are erased in writing the data track. The distance between the erase band ends of the both adjacent data tracks corresponds to the width SW of the area which is not erased by the adjacent data tracks. Specifying the data track pitch based on this leads to increase in the data capacity of each recording surface and secure prevention of occurrence of a squeeze error.

摘要翻译： 本发明的实施例有助于提高盘驱动装置的容量和可靠性，以提高其制造成品率。 本发明的一个实施例根据头部特性为每个磁头滑动器（记录表面）设置数据磁道间距。 用于指定数据轨道间距的该方法基于两个相邻数据轨道的擦除频带结束（EBE）之间的距离。 数据磁道的擦除频带是定义为在写入数据磁道时已经写入的数据被擦除的区域的频带。 两个相邻数据磁道的擦除带端之间的距离对应于相邻数据磁道未被擦除的区域的宽度SW。 基于此指定数据轨道间距导致每个记录表面的数据容量增加并且确保防止发生挤压误差。

公开(公告)号：US07385777B2

公开(公告)日：2008-06-10

申请号：US11514871

申请日：2006-09-01

申请人： Noriaki Satoh ,  Toyomi Ohsawa ,  Masaharu Kawamura ,  Hideki Ohzeki ,  Kazunari Tsuchimoto

发明人： Noriaki Satoh ,  Toyomi Ohsawa ,  Masaharu Kawamura ,  Hideki Ohzeki ,  Kazunari Tsuchimoto

IPC分类号： G11B21/02 ,  G11B5/596

CPC分类号： G11B5/3136 ,  G11B5/5547 ,  G11B5/6005 ,  G11B5/6064 ,  G11B5/607

摘要： Embodiments of the invention reduce a possibility that a head will collide with a medium when the clearance between the head and the medium is adjusted by using a medium, and sufficiently reduce the clearance even at an initial stage of accessing a data area. In one embodiment, a hard disk drive (HDD) keeps a heater in an OFF state for a period of time from the start of seek operation until the specified timing after a following mode starts. This prevents a head element from colliding with a magnetic disk, and also prevents flying properties from changing due to the deformation of the ABS. In the above specified timing, the heater is switched from OFF to ON. Specifically, for example, on completion of seek operation, in the timing in which a head arrives at a target track, or in the timing in which an HDC/MPU enters the following mode, the heater is turned ON.

摘要翻译： 本发明的实施例减少了当通过使用介质来调整头部和介质之间的间隙时头部将与介质碰撞的可能性，并且即使在访问数据区域的初始阶段也足够地减小间隙。 在一个实施例中，硬盘驱动器（HDD）将加热器保持在关闭状态，持续一段时间，从搜索操作开始直到在后续模式开始之后的指定定时。 这样可防止头元件与磁盘碰撞，并且还防止由于ABS的变形引起的飞行性能的变化。 在上述指定的时间，加热器从OFF切换到ON。 具体地，例如，在寻道操作完成时，在头到达目标轨道的时刻，或者在HDC / MPU进入后续模式的定时中，加热器被接通。

公开(公告)号：US06470412B1

公开(公告)日：2002-10-22

申请号：US09169549

申请日：1998-10-09

申请人： Masashi Kisaka ,  Yutaka Ozawa ,  Kazunari Tsuchimoto

发明人： Masashi Kisaka ,  Yutaka Ozawa ,  Kazunari Tsuchimoto

IPC分类号： G06F1200

CPC分类号： G11B5/5547 ,  G11B21/083

摘要： A disk drive and a disk drive control method is described which reduces the number of one track seeks a drive performs. The one track seeks can operate the actuator bearing in a non-linear mode or can increase in the friction of the actuator bearing which leads to servo positioning inaccuracies. In the disk drive the logical block address (LBA) assignments are made so that when sequential addresses are allocated to two different tracks, the tracks are physically non-adjacent. Thus, when a sequential LBAs are read across a track boundary, the actuator is moved farther than would be required if the LBAs were assigned the adjacent tracks.

摘要翻译： 描述了磁盘驱动器和磁盘驱动器控制方法，其减少了驱动器执行的一个磁道的数量。 单轨追求可以以非线性模式操作致动器轴承，或者可以增加致动器轴承的摩擦，这导致伺服定位不准确。 在磁盘驱动器中，进行逻辑块地址（LBA）分配，使得当将顺序地址分配给两个不同的轨道时，轨道物理上不相邻。 因此，当沿着轨道边界读取顺序的LBA时，如果LBA被分配相邻的轨道，则致动器被移动得比所需的更远。

公开(公告)号：US06336202B1

公开(公告)日：2002-01-01

申请号：US09149535

申请日：1998-09-08

申请人： Kazunari Tsuchimoto ,  Kayo Takahashi ,  Yuji Yokoe ,  Shigemi Suganuma

发明人： Kazunari Tsuchimoto ,  Kayo Takahashi ,  Yuji Yokoe ,  Shigemi Suganuma

IPC分类号： G11C2900

CPC分类号： G11B20/1883 ,  G11B2220/20

摘要： A data storage system, a storage medium and a method of controlling a data storage system are described, which allow defects on a storage medium to be handled with a memory region of a reduced size. In one embodiment defective sectors are determined on a magnetic disk and recorded in a defect map as a starting address and a number (length) of consecutive defective sectors to more efficiently record defective sector bursts than in the prior art. Optionally a mixed format defect map may record defective sector bursts as above and single sector defects as an address without a number of consecutive defective sectors.

摘要翻译： 描述了数据存储系统，存储介质和控制数据存储系统的方法，其允许以较小尺寸的存储区域处理存储介质上的缺陷。 在一个实施例中，在磁盘上确定缺陷扇区，并将其记录在缺陷图中，作为起始地址和连续缺陷扇区的数量（长度），以便比现有技术更有效地记录缺陷扇区突发。 可选地，混合格式缺陷图可以如上记录缺陷扇区脉冲串和单扇区缺陷作为没有多个连续缺陷扇区的地址。

公开(公告)号：US07595955B2

公开(公告)日：2009-09-29

申请号：US12069311

申请日：2008-02-07

申请人： Mirei Hosono ,  Kazunari Tsuchimoto ,  Hideki Ohzeki ,  Tetsuo Ueda ,  Isao Yoneda ,  Kazuyuki Ishibashi ,  Hiroshi Uchida

发明人： Mirei Hosono ,  Kazunari Tsuchimoto ,  Hideki Ohzeki ,  Tetsuo Ueda ,  Isao Yoneda ,  Kazuyuki Ishibashi ,  Hiroshi Uchida

IPC分类号： G11B5/596 ,  G11B20/20

CPC分类号： G11B5/59688 ,  G11B5/59627

摘要： Embodiments of the present invention help to achieve a read error recovery, and suppress decreases in the capacity of the disk drive device and degradation in performance. In one embodiment, a hard disk drive (HDD) performs following control without use of repeatable run-out (RRO) compensation information on a magnetic disk in a normal reading process. When an error occurs in a normal reading process, the HDD moves a read element to a position different from a target position of the normal reading process. At the position where the read element has been moved, the read element reads out the RRO compensation information. In a recovery procedure for the reading process where the error has occurred, the HDD performs following control with compensation by the servo compensation information read out by the read element.

摘要翻译： 本发明的实施例有助于实现读错误恢复，并且抑制磁盘驱动装置的容量的降低和性能的降低。 在一个实施例中，硬盘驱动器（HDD）在正常读取过程中不使用磁盘上的可重复的耗尽（RRO）补偿信息执行以下控制。 当在正常读取过程中发生错误时，HDD将读取元件移动到与正常读取处理的目标位置不同的位置。 在读取元素移动的位置，读取元件读出RRO补偿信息。 在发生错误的读取处理的恢复过程中，HDD通过由读取元素读出的伺服补偿信息进行补偿来执行以下控制。