公开(公告)号：US20050185320A1

公开(公告)日：2005-08-25

申请号：US11063487

申请日：2005-02-22

申请人： Tetsuo Ueda ,  Isao Yoneda ,  Hideki Ohzeki ,  Naoyuki Minami

发明人： Tetsuo Ueda ,  Isao Yoneda ,  Hideki Ohzeki ,  Naoyuki Minami

IPC分类号： G11B20/10 ,  G11B5/596 ,  G11B21/08

CPC分类号： G11B5/596

摘要： Embodiments of the invention provide control of a disk data storage device to prevent off-track writing. In one embodiment, the SA acquires the CYLIDs and ADC Values generated from the SERVO SIGNALs acquired previously, and generates DACOUT which defines a driving current of the VCM driver. The SA monitors the DACOUT generated and determines whether the DACOUT is within a predefined range. If the DACOUT is outside the predefined range, data writing is inhibited. By monitoring the DACOUT, it is possible for the VCM driver to detect supply of an overcurrent to the VCM driver 210 beforehand, and off-track writing can thus be prevented.

摘要翻译： 本发明的实施例提供了一种磁盘数据存储设备的控制以防止偏离写入。 在一个实施例中，SA获取从先前获得的SERVO信号产生的CYLID和ADC值，并产生定义VCM驱动器的驱动电流的DACOUT。 SA监视生成的DACOUT，并确定DACOUT是否在预定义的范围内。 如果DACOUT超出预定范围，则禁止数据写入。 通过监视DACOUT，VCM驱动器可以预先检测到VCM驱动器210的过电流供应，从而可以防止偏离写入。

公开(公告)号：US20050185312A1

公开(公告)日：2005-08-25

申请号：US11064698

申请日：2005-02-23

申请人： Tetsuo Ueda ,  Kazuyuki Ishibashi ,  Satoshi Ishii ,  Masaaki Noguchi

发明人： Tetsuo Ueda ,  Kazuyuki Ishibashi ,  Satoshi Ishii ,  Masaaki Noguchi

IPC分类号： G11B21/21 ,  G11B5/60 ,  G11B20/18 ,  G11B21/02 ,  G11B27/36

CPC分类号： G11B5/6005 ,  G11B5/40 ,  G11B5/6029 ,  G11B21/21

摘要： Embodiments of the invention are directed to detecting an abnormality in head flying height. In one embodiment, an AGC controller establishes the gain of the reproduced signal through gain adjustment using the servo AGC of the servo signal. A digital filter performs filtering processing by use of the obtained gain data g and the gain data of previous sectors. A comparative judgment section obtains filtered gain data G from the digital filter and compares the gain data G with a reference value CRITERIA to determine whether the flying height is normal or abnormal. If the gain G is larger than the reference value CRITERIA, then the data write operation is inhibited. The filter parameters of the digital filter are programmable parameters which can be set and changed.

摘要翻译： 本发明的实施例涉及检测头部飞行高度的异常。 在一个实施例中，AGC控制器通过使用伺服信号的伺服AGC的增益调整来建立再生信号的增益。 数字滤波器通过使用获得的增益数据g和先前扇区的增益数据来执行滤波处理。 比较判断部分从数字滤波器获得滤波后的增益数据G，并将增益数据G与参考值CRITERIA进行比较，以确定飞行高度是正常还是异常。 如果增益G大于参考值CRITERIA，则禁止数据写入操作。 数字滤波器的滤波器参数是可设置和更改的可编程参数。

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。

公开(公告)号：US06622206B1

公开(公告)日：2003-09-16

申请号：US09591020

申请日：2000-06-09

申请人： Atsushi Kanamaru ,  Hideo Asano ,  Tetsuo Ueda

发明人： Atsushi Kanamaru ,  Hideo Asano ,  Tetsuo Ueda

IPC分类号： G06F1200

CPC分类号： G06F3/0613 ,  G06F3/0656 ,  G06F3/0676 ,  G06F12/0866

摘要： A method and system are disclosed to prevent significant degradation of a data transfer rate in write cache transfer, thereby keeping the minimum data transfer rate high. The initial value Ti of the virtual buffer full capacity T(tx) is set to F/N (where F is a data capacity of the buffer, and N>1) and it is determined if the amount of write cached data S(tx) reaches the virtual buffer full capacity T(tx) so that write cache transfer is enabled during an S(tx)

摘要翻译： 公开了一种方法和系统，以防止写入高速缓存传送中的数据传输速率的显着劣化，从而保持最小的数据传输速率。 虚拟缓冲器满容量T（tx）的初始值Ti被设置为F / N（其中F是缓冲器的数据容量，N> 1），并且确定写入缓存数据量S（tx ）达到虚拟缓冲器满容量T（tx），使得在S（tx）

公开(公告)号：US06487028B1

公开(公告)日：2002-11-26

申请号：US09275952

申请日：1999-03-25

申请人： S. M. Sri-Jayantha ,  Hien Dang ,  Arun Sharma ,  Kiyoshi Satoh ,  Tetsuo Ueda ,  Hideki Ohzeki ,  Nayouki Kagami ,  Kiochi Takeuchi

发明人： S. M. Sri-Jayantha ,  Hien Dang ,  Arun Sharma ,  Kiyoshi Satoh ,  Tetsuo Ueda ,  Hideki Ohzeki ,  Nayouki Kagami ,  Kiochi Takeuchi

IPC分类号： G11B502

CPC分类号： G11B5/59633

摘要： In order to handle platter flutter in a hard disk operated at high speed (e.g. 10,000 RPM) and maintain tracking of read/write head, peak filters are added to a head tracking servo feedback loop. In some embodiments, several lag-lead type peak filters centered at a plurality of flutter mode frequencies are provided to process a Position Error Signal (PES) read from the read/write head. The several filter are preferably arranged in series (i.e. to operate on the PES sequentially), alternatively the filters can be arranged in parallel. Phase lags and leads caused by the several filters partially cancel at frequencies intermediate center frequencies of the several filters. According to another embodiment two or more, preferably three narrow band filters are used to cover the spectrum of each flutter mode. In a configuration mode, a spectrum of the flutter modes can be obtained and used to set the center frequencies, and bandwidths of filters used to filter out the flutter modes.

摘要翻译： 为了处理以高速（例如10,000RPM）运行的硬盘中的盘片颤动并且保持对读/写头的跟踪，峰值滤波器被添加到磁头跟踪伺服反馈回路中。 在一些实施例中，提供以多个颤振模式频率为中心的几个滞后引线型峰值滤波器来处理从读/写头读取的位置误差信号（PES）。 多个滤波器优选地串联布置（即，顺序地在PES上操作），或者滤波器可以并联布置。 由几个滤波器引起的相位滞后和引线在几个滤波器的中间中心频率处部分地消除。 根据另一个实施例，两个或更多个，优选地三个窄带滤波器用于覆盖每个颤振模式的频谱。 在配置模式下，可以获得颤振模式的频谱，并用于设置中心频率，以及用于滤除颤振模式的滤波器的带宽。

公开(公告)号：US06476997B2

公开(公告)日：2002-11-05

申请号：US09120906

申请日：1998-07-22

申请人： Yukio Fukushima ,  Tetsuo Ueda ,  Toshio Kakihara ,  Hideo Asano

发明人： Yukio Fukushima ,  Tetsuo Ueda ,  Toshio Kakihara ,  Hideo Asano

IPC分类号： G11B5596

CPC分类号： G11B5/59627

摘要： A disk device, track positioning method, and method for generating a position error signal in which the occurrence of a wrong correction operation can be prevented by creating an appropriate PES without using a burst pattern having a defect, and reassign sectors can be decreased by decreasing defective sectors thereby to reduce the performance degradation is disclosed. In the disk device and track positioning method, the defect of a burst pattern read out from a disk is detected, and if a defect is detected in the burst pattern, a data value corresponding to the sum data of the burst pattern pair having the defect detected is obtained by measuring the maximum amplitude value of the burst pattern pairing with the burst pattern having the defect detected, and a PES is created according to the amplitude of the burst pattern having the defect detected and the maximum amplitude value.

摘要翻译： 一种磁盘装置，轨道定位方法以及用于产生位置误差信号的方法，其中可以通过在不使用具有缺陷的脉冲串模式的情况下创建适当的PES来防止出现错误的校正操作，并且可以通过减少重新分配扇区来减少重新分配扇区 缺陷扇区，从而降低性能下降。 在盘装置和轨迹定位方法中，检测从盘读出的脉冲串模式的缺陷，并且如果在脉冲串模式中检测到缺陷，则与具有缺陷的脉冲串模式对的和数据相对应的数据值 通过测量与检测到缺陷的脉冲串模式匹配的脉冲串模式的最大幅度值，并且根据具有检测到的缺陷的脉冲串模式的幅度和最大振幅值来创建PES来获得检测到的。

公开(公告)号：US06456451B1

公开(公告)日：2002-09-24

申请号：US09220419

申请日：1998-12-24

申请人： Hideo Asano ,  Kenji Okada ,  Tetsuo Ueda ,  Koichi Arai ,  Hideki Ohzeki

发明人： Hideo Asano ,  Kenji Okada ,  Tetsuo Ueda ,  Koichi Arai ,  Hideki Ohzeki

IPC分类号： G11B5596

CPC分类号： G11B5/5547

摘要： A disk drive seek control system device to reduce track pitch. When data is recorded, an offset value is added to the position of a read head element along the width of a track corresponding to an offset &Dgr;w between the read head element and a write head element. The value of the offset depends on the yaw angle &thgr; of the head. When data is read, the position of the read head element is chosen to be either the position of the write head element during write operations, or the midpoint between the position of the write head element and the read head element during write operations, or the center of a track.

公开(公告)号：US06216050B1

公开(公告)日：2001-04-10

申请号：US09032218

申请日：1998-02-27

申请人： Hiroyuki Ono ,  Tetsuo Ueda

发明人： Hiroyuki Ono ,  Tetsuo Ueda

IPC分类号： G05B1101

CPC分类号： G11B5/5534

摘要： An actuator control system and a magnetic disk device having a hybrid control system. The actuator control system includes an LPF that can be processed by the hardware architecture of a HDD that does not include a state estimator. The actuator control system includes an actuator 10, a VCM driver circuit 11 for driving the actuator 10, an ADC 12 for converting the position signal from the actuator 10 into a digital position signal, an MPU 13 for generating the control signal to the actuator 10 in response to the digital position signal, a DAC 14 for converting the control signal into an analog control signal, and an LPF 15 coupled between DAC 14 and VCM driver circuit 11. The MPU 13 compensates the phase delay resulting from the LPF 15 by digital control. Additionally, the digital control reconstructs the state model of a plant including the LPF 15 to a state model requiring no state estimator.

摘要翻译： 一种致动器控制系统和具有混合控制系统的磁盘装置。 致动器控制系统包括可以由不包括状态估计器的HDD的硬件架构处理的LPF。 执行器控制系统包括致动器10，用于驱动致动器10的VCM驱动器电路11，用于将来自致动器10的位置信号转换为数字位置信号的ADC 12，用于向致动器10产生控制信号的MPU 13 响应于数字位置信号，将用于将控制信号转换为模拟控制信号的DAC 14以及耦合在DAC 14和VCM驱动电路11之间的LPF 15构成。MPU 13通过数字式补偿由LPF15产生的相位延迟 控制。 此外，数字控制将包括LPF 15的工厂的状态模型重建为不需要状态估计器的状态模型。

公开(公告)号：US4049540A

公开(公告)日：1977-09-20

申请号：US663818

申请日：1976-03-04

申请人： Tetsuo Ueda ,  Shigeo Yoshioka ,  Yoshihiko Shohji ,  Tsunemitsu Tanaka ,  Yukio Kikuchi ,  Nobuo Fujita ,  Norio Kaneko ,  Toshiharu Tanemoto

发明人： Tetsuo Ueda ,  Shigeo Yoshioka ,  Yoshihiko Shohji ,  Tsunemitsu Tanaka ,  Yukio Kikuchi ,  Nobuo Fujita ,  Norio Kaneko ,  Toshiharu Tanemoto

IPC分类号： C10G9/32

CPC分类号： C10G9/32

摘要： A process for the thermal cracking of heavy oils with a fluidized particulate heat carrier is carried out while recovering particles of the heat carrier accompanied by a stream of the reaction product by means of a cyclone and a gravitational separator, returning the particles of the heat carrier recovered by the cyclone directly to the reactor and returning the particles of the heat carrier recovered by the gravitational separator to the reactor in the form of suspension in a cracked oil.

摘要翻译： 在流化颗粒状热载体的热油裂解过程中，通过旋风分离器和重力分离器回收伴随着反应产物流的热载体的颗粒，使热载体的颗粒返回 由旋风分离器直接回收到反应器中，并将由重力分离器回收的热载体的颗粒以悬浮液的形式在裂化油中返回到反应器中。