公开(公告)号：US6061805A

公开(公告)日：2000-05-09

申请号：US969204

申请日：1997-11-12

申请人： Hiroaki Suzuki ,  Hideo Asano ,  Atsushi Tobari ,  Satoshi Nishino ,  Shuji Yamada ,  Haruo Andoh ,  Tsuguaki Kowa

发明人： Hiroaki Suzuki ,  Hideo Asano ,  Atsushi Tobari ,  Satoshi Nishino ,  Shuji Yamada ,  Haruo Andoh ,  Tsuguaki Kowa

IPC分类号： G06F3/06 ,  G06F11/00 ,  G11B19/00 ,  G11B19/04 ,  G11B20/00 ,  G11B20/10 ,  G11B20/18

CPC分类号： G11B19/041

摘要： An error recovery procedure (ERP) in a storage device such as a rotating magnetic hard disk drive is executed to the last step regardless of the established time-out period for an instruction, thereby more reliably recovering from errors. In accordance with one embodiment of the invention, when a disk drive receives a reset instruction from a host during the execution of an ERP, it executes the ERP until the error is recovered, or to the last step without interrupting the ERP. Further, in accordance with another embodiment of the invention, when a disk drive receives a reset instruction during the execution of an ERP, it stops execution of the ERP and holds the number K of the step which was completed immediately before stopping, and when receiving a retry instruction after that, sequentially executes the ERP from the K+1-th error recovery step.

摘要翻译： 执行诸如旋转磁盘驱动器的存储装置中的错误恢复过程（ERP）到最后步骤，而不管建立的指令的超时周期，从而更可靠地从错误中恢复。 根据本发明的一个实施例，当磁盘驱动器在执行ERP期间从主机接收到重置指令时，它执行ERP直到错误被恢复，或者直到最后一步而不中断ERP。 此外，根据本发明的另一实施例，当磁盘驱动器在执行ERP期间接收到重置指令时，它停止执行ERP并保持在停止之前立即完成的步骤的数量K，并且当接收到 之后的重试指令，从第K + 1错误恢复步骤顺序地执行ERP。

公开(公告)号：US06345366B1

公开(公告)日：2002-02-05

申请号：US09555035

申请日：2000-07-17

申请人： Hideo Asano ,  Hiroaki Suzuki ,  Tatsuya Endo ,  Isao Yoneda ,  Kazuyuki Kobayashi ,  Haruo Andoh

发明人： Hideo Asano ,  Hiroaki Suzuki ,  Tatsuya Endo ,  Isao Yoneda ,  Kazuyuki Kobayashi ,  Haruo Andoh

IPC分类号： G06F1100

CPC分类号： G11B20/1816 ,  G11B20/1879 ,  G11B2020/183

摘要： An Error Recover Procedure (ERP) is disclosed which, during execution of the ERP, while self-diagnosing the cause of error, dynamically changes the error recovery steps of the ERP. An appropriate ERP is selected and executed according to the detected error status.

摘要翻译： 公开了一种错误恢复过程（ERP），在ERP的执行过程中，在自我诊断错误原因的同时，动态地更改ERP的错误恢复步骤。 根据检测到的错误状态选择并执行适当的ERP。

公开(公告)号：US4364988A

公开(公告)日：1982-12-21

申请号：US61253

申请日：1979-07-27

申请人： Haruo Andoh ,  Susumu Kitaoka ,  Toshinobu Sueyoshi ,  Hikaru Ishida ,  Akira Kato

发明人： Haruo Andoh ,  Susumu Kitaoka ,  Toshinobu Sueyoshi ,  Hikaru Ishida ,  Akira Kato

IPC分类号： G11B5/706 ,  G11B5/70

CPC分类号： G11B5/70642 ,  G11B5/70673 ,  Y10S428/90 ,  Y10T428/24942 ,  Y10T428/257

摘要： An improved magnetic recording medium is disclosed, particularly a magnetic tape suitable for sound recording and video recording, which comprises as a recording element a mixture of cobalt-containing iron oxide magnetic particles consisting essentially of ferromagnetic iron oxide particles containing cobalt and optionally a divalent iron in the most outer layer thereof, and .gamma.-ferric oxide particles in the ratio of 10:90 to 50:50 by weight, said mixture of cobalt-containing iron oxide magnetic particles and .gamma.-ferric oxide particles being applied to a substrate (e.g. a polyester film) with a binding agent. The magnetic recording medium has excellent electromagnetic transducing properties and improved charging properties and is useful for conventional magnetic recording apparatus used at normal position with high sensitivity in wide range of frequency.

摘要翻译： 公开了一种改进的磁记录介质，特别是适用于录音和视频记录的磁带，其包括作为记录元件的含钴氧化铁磁性颗粒的混合物，其主要由含有钴的铁磁性氧化铁颗粒和任选的二价铁组成 在其最外层和按重量比例为10:90至50:50的γ-氧化铁颗粒，将所述含钴氧化铁磁性颗粒和γ-氧化铁颗粒的混合物施加到基底（例如， 聚酯薄膜）。 磁记录介质具有优异的电磁感应特性和改善的充电特性，对于在宽频率范围内具有高灵敏度的正常位置使用的常规磁记录装置是有用的。

公开(公告)号：US6088818A

公开(公告)日：2000-07-11

申请号：US009143

申请日：1998-01-20

申请人： Haruo Andoh ,  Keiji Kobayashi ,  Kazunari Tsuchimoto

发明人： Haruo Andoh ,  Keiji Kobayashi ,  Kazunari Tsuchimoto

IPC分类号： G06F11/00 ,  G11B20/18

CPC分类号： G11B20/18 ,  G06F11/00

摘要： To decrease the number of read errors of a storage device due to bus noise when data is transferred between a host apparatus and the storage device. When a read error due to bus noise is detected, transfer of data to a host apparatus is temporarily stopped when executing rereading to eliminate bus noise which is a cause of the read error. In a preferred embodiment bus noise errors are distinguished by looking at the frequency of errors and the retry count for the previous error. The error is detected as a bus noise error if the frequency is above a threshold and the retry count is below a threshold. Data transfer can be restarted when a buffer becomes full or when the reading of the data is successfully completed.

摘要翻译： 当在主机设备和存储设备之间传送数据时，减少由于总线噪声引起的存储设备读取错误的数量。 当检测到由总线噪声引起的读取错误时，在执行重新读取时暂时停止向主机设备传送数据，以消除作为读取错误的原因的总线噪声。 在优选实施例中，通过查看错误的频率和先前错误的重试计数来区分总线噪声误差。 如果频率高于阈值并且重试次数低于阈值，则该错误被检测为总线噪声误差。 当缓冲区已满或数据读取成功完成时，可重新启动数据传输。

公开(公告)号：US4857417A

公开(公告)日：1989-08-15

申请号：US141073

申请日：1988-01-05

申请人： Susumu Kitaoka ,  Haruo Andoh ,  Junichi Hirata

发明人： Susumu Kitaoka ,  Haruo Andoh ,  Junichi Hirata

IPC分类号： G11B5/706

CPC分类号： G11B5/70694 ,  Y10S428/90 ,  Y10T428/2991

摘要： Cobalt-containing iron oxide magnetic particles having a high coercive force and a small surface electrical resistance which are useful as a recording element for a magnetic recording medium, and a method for the preparation of the same comprising reducing acicular .gamma.-Fe.sub.2 O.sub.3 particles in a reducing gas or liquid until the iron oxide reaches an intermediate oxidation state between .gamma.-Fe.sub.2 O.sub.3 and Fe.sub.3 O.sub.4, dispersing the resulting iron oxide particles into an aqueous solution containing a cobalt salt and optionally a ferrous salt and an alkali of one equivalent or more to the metal salt(s), and heating the mixture at a temperature of higher than room temperature up to a boiling point of the mixture under an atmospheric condition such that the divalent iron is substantially not oxidized. The cobalt is thereby predominantly incorporated into the most outer layer of the acicular iron oxide particles.

摘要翻译： 可用作磁记录介质的记录元件的具有高矫顽力和小表面电阻的含钴氧化铁磁性颗粒及其制备方法包括还原针状γ-Fe2O3颗粒的还原性 气体或液体，直到氧化铁在γ-Fe 2 O 3与Fe 3 O 4之间达到中间氧化态，将得到的氧化铁颗粒分散到含有钴盐和任选的亚铁盐和一当量或更多的碱金属盐的水溶液中 并在大气条件下在高于室温的温度下将该混合物加热到混合物的沸点，使得二价铁基本上不被氧化。 因此，钴主要并入针状氧化铁颗粒的最外层。

公开(公告)号：US4624883A

公开(公告)日：1986-11-25

申请号：US590796

申请日：1984-03-19

申请人： Satoru Yamaguchi ,  Kozaburoh Satoh ,  Jozo Shimizu ,  Haruo Andoh

发明人： Satoru Yamaguchi ,  Kozaburoh Satoh ,  Jozo Shimizu ,  Haruo Andoh

IPC分类号： C09D5/23 ,  C09D7/12 ,  G11B5/716 ,  G11B5/70

CPC分类号： G11B5/716 ,  Y10S428/90 ,  Y10T428/24942 ,  Y10T428/24975 ,  Y10T428/256 ,  Y10T428/257

摘要： A magnetic recording medium which comprises a first magnetic layer on a base and a second magnetic layer over the first magnetic layer, the second magnetic layer containing magnetic particles having an average particle length (long axis diameter) of not more than 0.35.mu. , with a coercive force of from 660 to 760 oersteds, and the ratio of the coercive force of the upper or second magnetic layer to that of the lower or first magnetic layer being 1.1/1 to 1.6/1. The resulting magnetic recording medium has excellent sensitivity and frequency characteristics over the entire frequency bands with less noise.

摘要翻译： 一种磁记录介质，包括基底上的第一磁性层和第一磁性层上的第二磁性层，所述第二磁性层含有平均粒径（长轴直径）不大于0.35μm的磁性颗粒，其中 660〜760奥斯特的矫顽力，上层或第二层的矫顽力与下层或第一层的矫顽力的比值为1.1 / 1〜1.6 / 1。 所得到的磁记录介质在噪声较小的整个频带上具有优异的灵敏度和频率特性。

公开(公告)号：US4299882A

公开(公告)日：1981-11-10

申请号：US154015

申请日：1980-05-28

申请人： Fumio Togawa ,  Haruo Andoh ,  Toshihiko Tanabe

发明人： Fumio Togawa ,  Haruo Andoh ,  Toshihiko Tanabe

IPC分类号： G11B5/70 ,  B32B5/16

CPC分类号： G11B5/7013 ,  Y10S428/90 ,  Y10T428/257 ,  Y10T428/258

摘要： A magnetic recording medium which comprises a base and a magnetic layer of a magnetic coating composition comprising magnetic particles and a binder provided on said base, characterized in that the magnetic coating composition further comprises a dialkylsulfosuccinate.

摘要翻译： 一种磁记录介质，其特征在于，磁性涂料组合物还包含二烷基磺基琥珀酸盐，该磁性涂层组合物包含磁性涂料组合物，该磁性涂料组合物包含磁性颗粒和粘合剂。

公开(公告)号：US20070174564A1

公开(公告)日：2007-07-26

申请号：US11654045

申请日：2007-01-16

申请人： Haruo Andoh

发明人： Haruo Andoh

IPC分类号： G06F12/00 ,  G06F13/00

CPC分类号： G11B20/1879 ,  G11B20/18 ,  G11B20/1883 ,  G11B2020/1826 ,  G11B2220/20

摘要： A hard disk drive (HDD) according to an embodiment of the present invention uses three primary defect map (PDM) formats: a single-sector entry format; a multi-sector entry format; and a two-dimensional sector entry format. Methods of registering defective sectors in each such format are illustrated. Defects can be appropriately registered in a limited RAM capacity by selecting an appropriate format according to states of the defects on a magnetic disk.

摘要翻译： 根据本发明的实施例的硬盘驱动器（HDD）使用三个主要缺陷映射（PDM）格式：单扇区输入格式; 多扇区录入格式; 和二维扇区输入格式。 示出了以各种格式记录缺陷扇区的方法。 通过根据磁盘上的缺陷的状态选择适当的格式，可以在有限的RAM容量中适当地登记缺陷。

公开(公告)号：US20060132959A1

公开(公告)日：2006-06-22

申请号：US11288685

申请日：2005-11-28

申请人： Haruo Andoh

发明人： Haruo Andoh

IPC分类号： G11B17/00

CPC分类号： G11B5/5547

摘要： Embodiments of the invention provide a disk drive capable of preventing the deterioration of performance. In one embodiment, a disk drive includes a disk medium; a head capable of performing a read/write operation for accessing the disk medium to read information from and to write information to the disk medium; a head controller for controlling the position of the head so that the head describes a substantially spiral trajectory relative to the disk medium; and a controller capable of controlling the head controller, of performing a read/write operation for reading or writing information with reference to an identifier table associating sector identifiers identifying sectors on a specified track with logical block addresses, and of creating an identifier table for a track to be accessed next during the read/write operation.

摘要翻译： 本发明的实施例提供一种能够防止性能下降的磁盘驱动器。 在一个实施例中，磁盘驱动器包括磁盘介质; 能够执行用于访问盘介质的读/写操作以从盘介质读取信息并向盘介质写入信息的头; 头部控制器，用于控制头部的位置，使得头部相对于盘介质描述基本上螺旋的轨迹; 以及能够控制头控制器的控制器，参考将识别指定轨道上的扇区的扇区标识符与逻辑块地址相关联的标识符表执行用于读取或写入信息的读/写操作，以及创建用于 在读/写操作期间接下来要访问的轨道。

公开(公告)号：US06850379B2

公开(公告)日：2005-02-01

申请号：US10075928

申请日：2002-02-14

申请人： Haruo Andoh ,  Takashi Kuroda ,  Yuhji Yokoe ,  Toshiaki Satoh

发明人： Haruo Andoh ,  Takashi Kuroda ,  Yuhji Yokoe ,  Toshiaki Satoh

IPC分类号： G06F12/16 ,  G06F3/06 ,  G11B5/00 ,  G11B5/012 ,  G11B5/55 ,  G11B5/596 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18

CPC分类号： G11B20/1883 ,  G11B5/012 ,  G11B5/5526 ,  G11B5/59633 ,  G11B2005/001 ,  G11B2220/20

摘要： A method for registering a defect map within a hard disk drive is disclosed. A hard disk drive includes a recording disk, a head assembly, and a controller. Multiple sectors are formed on the recording disk, and the head assembly includes a head for reading/writing data from/to the recording disk. The controller, which controls the head assembly to read/write data from/to the recording disk, includes a defect sector positional information holding device and a sector identification device. The defect sector positional information holding device holds positional information of a defect sector disabled to read/write data therefrom/thereto the recording disk. The positional information includes the number of the defect sectors continued in a circumferential direction and in a radial direction of the recording disk. The sector identification device refers to the positional information of the defect sector so as to identify a target sector from/in which data is to be read/written when a read/write command is received from a host computer.

摘要翻译： 公开了一种在硬盘驱动器内注册缺陷图的方法。 硬盘驱动器包括记录盘，头组件和控制器。 在记录盘上形成多个扇区，并且头部组件包括用于从记录盘读取/写入数据的头部。 控制头部组件从记录盘读取/写入数据的控制器包括缺陷扇区位置信息保持装置和扇区识别装置。 缺陷扇区位置信息保持装置保持将记录盘从其读/写数据禁止的缺陷扇区的位置信息。 位置信息包括在记录盘的圆周方向和径向方向上连续的缺陷扇区的数量。 扇区识别装置参考缺陷扇区的位置信息，以便当从主计算机接收到读/写命令时，识别/写入数据的目标扇区。