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    Disk drive apparatus and head switching method in a disk drive apparatus
    1.
    发明授权
    Disk drive apparatus and head switching method in a disk drive apparatus 失效
    磁盘驱动装置中的磁盘驱动装置和磁头切换方法

    公开(公告)号：US5969895A

    公开(公告)日：1999-10-19

    申请号：US824423

    申请日：1997-03-26

    申请人： Tetsuo Ueda ,  Atsushi Tobari ,  Yoshihiro Nakagawa ,  Kazushige Okutsu

    发明人： Tetsuo Ueda ,  Atsushi Tobari ,  Yoshihiro Nakagawa ,  Kazushige Okutsu

    IPC分类号： G11B5/55 ,  G11B21/08

    CPC分类号： G11B21/083 ,  G11B5/5547

    摘要： The present invention provides a method and apparatus to efficiently switch heads in a disk drive. A disk drive comprises a plurality of recording surfaces and a plurality of heads and each head is opposed to a recording surface. The heads are used for reading data from or writing data to the plurality of recording surfaces. An offset quantity table stores an offset quantity for each of the plurality of heads. The offset quantity is a value representative of the distance of a head with respect to a reference head. A head sequence table stores a predetermined head switching sequence. Head switching operations use the head switching sequence stored in the head sequence table.

    摘要翻译： 本发明提供一种有效地切换磁盘驱动器中的磁头的方法和装置。 磁盘驱动器包括多个记录表面和多个磁头，并且每个磁头与记录表面相对。 头用于从多个记录表面读取数据或向其写入数据。 偏移量表存储多个头中的每一个的偏移量。 偏移量是表示头部相对于基准头部的距离的值。 头序列表存储预定的头切换序列。 头切换操作使用头序列表中存储的头切换序列。

    Disk drive device and a method for controlling the same
    2.
    发明授权
    Disk drive device and a method for controlling the same 失效
    磁盘驱动装置及其控制方法

    公开(公告)号：US06289416B1

    公开(公告)日：2001-09-11

    申请号：US09139933

    申请日：1998-08-26

    申请人： Yukio Fukushima ,  Toshio Kakihara ,  Kazushige Okutsu ,  Tetsuo Ueda

    发明人： Yukio Fukushima ,  Toshio Kakihara ,  Kazushige Okutsu ,  Tetsuo Ueda

    IPC分类号： G06F1208

    CPC分类号： G06F3/0607 ,  G06F3/0659 ,  G06F3/0676 ,  G06F12/0866

    摘要： The present invention provides a disk drive device containing a cache memory having K queue entries (K is an integer) to operate in a write cache mode and a method for controlling the disk drive device. The number of the queue entries to be used in the write cache mode can be gradually decreased from the number K to a decreased number by a predetermined number, and the number of the queue entries to be used in the write cache mode can be gradually increased from the decreased number towards the number K by a predetermined number, in response to values of parameters, such as an error rate and Non Repeatable Run Out or Repeatable Run Out of the rotating data recording disk at writing of data from the cache memory to a rotating data recording disk.

    摘要翻译： 本发明提供了一种包含具有以写入高速缓存模式操作的K个队列条目（K为整数）的高速缓冲存储器的磁盘驱动器装置以及用于控制磁盘驱动器件的方法。 在写入高速缓存模式中要使用的队列条目的数量可以从数量K逐渐减少到减少的数量预定的数量，并且可以逐渐增加在写入高速缓存模式中使用的队列条目的数量 响应于数据从高速缓冲存储器写入到旋转数据记录盘的参数值，例如错误率和不可重复运行或可重复运行的数据从数量减少预定数量 旋转数据记录盘。

    Data storage unit and method for starting data storage unit
    4.
    发明授权
    Data storage unit and method for starting data storage unit 失效
    用于启动数据存储单元的数据存储单元和方法

    公开(公告)号：US06721844B1

    公开(公告)日：2004-04-13

    申请号：US09114584

    申请日：1998-07-13

    申请人： Kazushige Okutsu ,  Tetsuo Ueda ,  Yukio Fukushima ,  Toshio Kakihara

    发明人： Kazushige Okutsu ,  Tetsuo Ueda ,  Yukio Fukushima ,  Toshio Kakihara

    IPC分类号： G06F1200

    CPC分类号： G11B19/20 ,  G11B19/2054

    摘要： To provide a method of starting a data storage unit which allows a computer system to be used as early as possible. The present invention relates to a method for starting up a computer system having a data storage unit equipped with an actuator arm which supports a flexible cable. The method allows a command from the host computer to be processed before generation of corrected tension data for the flexible cable. The method includes the steps of turning on power; executing a start operation, excluding generation of corrected tension data of the flexible cable; causing an access command from a host computer to be in an executable state, following the step of executing a start operation; and executing generation of corrected tension data of the flexible cable, following the step of causing an access command from a host computer to be in an executable state.

    摘要翻译： 提供启动能够尽可能早地使用计算机系统的数据存储单元的方法。 本发明涉及一种用于启动具有数据存储单元的计算机系统的方法，所述数据存储单元配备有支撑柔性电缆的致动器臂。 该方法允许在生成用于柔性电缆的校正张力数据之前处理来自主计算机的命令。 该方法包括打开电源的步骤; 执行开始操作，不包括产生柔性电缆的校正张力数据; 在执行开始操作的步骤之后，使来自主计算机的访问命令处于可执行状态; 以及执行所述柔性电缆的校正张力数据的产生，其中所述步骤是使来自主计算机的访问命令处于可执行状态。

    Magnetic disk drive and method for seek operations with reduced noise
    6.
    发明授权
    Magnetic disk drive and method for seek operations with reduced noise 有权
    磁盘驱动器和噪声减小的寻道操作方法

    公开(公告)号：US07271976B2

    公开(公告)日：2007-09-18

    申请号：US11265004

    申请日：2005-11-01

    申请人： Satoshi Ishii ,  Tetsuo Ueda ,  Isao Yoneda

    发明人： Satoshi Ishii ,  Tetsuo Ueda ,  Isao Yoneda

    IPC分类号： G11B21/02

    CPC分类号： G11B5/5547

    摘要： Embodiments of the invention reduce the noise occurring when the lubricating layer on the magnetic disk is smoothed. In one embodiment, a magnetic disk drive has a read/write mode parameter table for generating an electric current to be supplied to a voice coil motor when the magnetic head performs data read/write operations on the magnetic disk. The magnetic disk drive also has a smoothing mode parameter table for generating another electric current to be supplied to the voice coil motor when neither a data read nor a write operation is performed on the magnetic disk. The CPU refers to either the read/write mode parameter table or the smoothing mode parameter table and controls the electric current to be supplied to the voice coil motor. When a lubricating-layer smoothing event occurs, the CPU refers to the smoothing mode parameter table and after generating the associated electric current to be supplied to the voice coil motor, moves the magnetic head to seek between the outermost and innermost tracks on the surface of the magnetic disk to perform a smoothing process for the lubricating layer.

    摘要翻译： 本发明的实施例减少了当磁盘上的润滑层平滑时产生的噪声。 在一个实施例中，当磁头对磁盘执行数据读/写操作时，磁盘驱动器具有用于产生要提供给音圈电机的电流的读/写模式参数表。 磁盘驱动器还具有平滑模式参数表，用于当不对磁盘执行数据读取或写入操作时，产生要提供给音圈电机的另一电流。 CPU指的是读/写模式参数表或平滑模式参数表，并控制提供给音圈电机的电流。 当发生润滑层平滑事件时，CPU参考平滑模式参数表，并且在产生要提供给音圈电机的相关联的电流之后，移动磁头以在表面上的最外侧和最内侧的轨道之间寻找 该磁盘对润滑层进行平滑处理。

    Semiconductor laser
    7.
    发明授权
    Semiconductor laser 有权
    半导体激光器

    公开(公告)号：US07142576B2

    公开(公告)日：2006-11-28

    申请号：US11198089

    申请日：2005-08-05

    申请人： Tetsuo Ueda ,  Keiji Yamane ,  Isao Kidoguchi ,  Shoji Fujimori

    发明人： Tetsuo Ueda ,  Keiji Yamane ,  Isao Kidoguchi ,  Shoji Fujimori

    IPC分类号： H01S5/00

    CPC分类号： H01S5/028

    摘要： A semiconductor laser includes an active layer formed on a substrate and a pair of cladding layers sandwiching the active layer. On at least one of resonator end faces of the semiconductor laser, a first dielectric film with hydrogen added therein is provided. Between the first dielectric film and the resonator end face, a second dielectric film for suppressing the diffusion of hydrogen is provided. Even when a semiconductor laser with an end face coating film including a hydrogen-added film is exposed to high temperatures, peeling of the end face coating film and deterioration of the end face coating film can be suppressed.

    摘要翻译： 半导体激光器包括形成在基板上的有源层和夹着有源层的一对包覆层。 在半导体激光器的至少一个谐振器端面上，提供了其中添加有氢的第一电介质膜。 在第一电介质膜和谐振器端面之间，提供了用于抑制氢的扩散的第二电介质膜。 即使当具有包含加氢膜的端面涂膜的半导体激光器暴露于高温时，也可以抑制端面涂膜的剥离和端面涂膜的劣化。

    Magnetic disk drive and method for executing seek operation
    8.
    发明申请
    Magnetic disk drive and method for executing seek operation 有权
    磁盘驱动器和执行寻道操作的方法

    公开(公告)号：US20060092549A1

    公开(公告)日：2006-05-04

    申请号：US11265004

    申请日：2005-11-01

    申请人： Satoshi Ishii ,  Tetsuo Ueda ,  Isao Yoneda

    发明人： Satoshi Ishii ,  Tetsuo Ueda ,  Isao Yoneda

    IPC分类号： G11B21/02

    CPC分类号： G11B5/5547

    摘要： Embodiments of the invention reduce the noise occurring when the lubricating layer on the magnetic disk is smoothed. In one embodiment, a magnetic disk drive has a read/write mode parameter table for generating an electric current to be supplied to a voice coil motor when the magnetic head performs data read/write operations on the magnetic disk. The magnetic disk drive also has a smoothing mode parameter table for generating another electric current to be supplied to the voice coil motor when neither a data read nor a write operation is performed on the magnetic disk. The CPU refers to either the read/write mode parameter table or the smoothing mode parameter table and controls the electric current to be supplied to the voice coil motor. When a lubricating-layer smoothing event occurs, the CPU refers to the smoothing mode parameter table and after generating the associated electric current to be supplied to the voice coil motor, moves the magnetic head to seek between the outermost and innermost tracks on the surface of the magnetic disk to perform a smoothing process for the lubricating layer.

    摘要翻译： 本发明的实施例减少了当磁盘上的润滑层平滑时产生的噪声。 在一个实施例中，当磁头对磁盘执行数据读/写操作时，磁盘驱动器具有用于产生要提供给音圈电机的电流的读/写模式参数表。 磁盘驱动器还具有平滑模式参数表，用于当不对磁盘执行数据读取或写入操作时，产生要提供给音圈电机的另一电流。 CPU指的是读/写模式参数表或平滑模式参数表，并控制提供给音圈电机的电流。 当发生润滑层平滑事件时，CPU参考平滑模式参数表，并且在产生要提供给音圈电机的相关联的电流之后，移动磁头以在表面上的最外侧和最内侧轨迹之间寻找 该磁盘对润滑层进行平滑处理。