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1. 发明授权

US06153997A Disk apparatus and method of controlling disk apparatus 有权
标题翻译：盘装置及其控制方法
公开(公告)号：US06153997A
公开(公告)日：2000-11-28
申请号：US229833
申请日：1999-01-13
申请人： Masahito Kobayashi , Iwao Oshimi , Yoshio Soyama , Akio Shioya , Yuji Hata
发明人： Masahito Kobayashi , Iwao Oshimi , Yoshio Soyama , Akio Shioya , Yuji Hata
IPC分类号： G11B5/55 , G11B5/596 , G11B21/08 , G11B21/10 , G11B21/02 , G11B5/56
CPC分类号： G11B5/59644 , G11B21/085 , G11B21/106 , G11B5/5521
摘要： A disk apparatus has a position signal detector for detecting the position of a head with a specified sampling period, a controller operating a manipulated variable to control positioning of the head using a microprocessor and a digital/analogue converter with which the manipulated variable is converted. At least one or more timing registers set the timing of the conversion carried out by the D/A converter and at least one or more manipulated variable registers set a manipulated variable that is converted into digital/analogue form at the set timing. In addition, the controller has advancing means to make a target position trajectory advance towards a specified time, a feedforward controller to receive the output of the advancing means and to calculate a feedforward control variable on the basis of a target trajectory, and a feedback controller to produce a feedback output variable on the basis of a target trajectory that is delayed relative to a target position trajectory by a specified time.
摘要翻译：磁盘装置具有用于以指定的采样周期检测磁头的位置的位置信号检测器，控制器操作操纵变量以使用微处理器来控制磁头的位置，以及数字/模拟转换器与被操纵的变量进行转换。至少一个或多个定时寄存器设置由D / A转换器进行的转换的定时，并且至少一个或多个操纵变量寄存器设置在设定的定时被转换成数字/模拟形式的操纵变量。此外，控制器具有使目标位置轨迹朝向指定时间前进的前进装置，用于接收前进装置的输出并基于目标轨迹计算前馈控制变量的前馈控制器，以及反馈控制器以基于相对于目标位置轨迹延迟指定时间的目标轨迹产生反馈输出变量。

2. 发明授权

US06909575B2 Magnetic disk drive and control method thereof 失效
标题翻译：磁盘驱动器及其控制方法
公开(公告)号：US06909575B2
公开(公告)日：2005-06-21
申请号：US10199233
申请日：2002-07-19
申请人： Yoshio Soyama , Yuji Hata , Katsumoto Onoyama
发明人： Yoshio Soyama , Yuji Hata , Katsumoto Onoyama
IPC分类号： G11B21/02 , G11B5/55 , G11B21/08 , G11B33/14 , G11B5/596
CPC分类号： G11B33/1406 , G11B5/5534 , G11B5/5547 , G11B5/5565
摘要： In a magnetic disk drive that performs the seek operation of a magnetic head by a VCM, a characteristic that is excellent in fault tolerance that will not generate a fault in severe environment, such as a high temperature and the issue of high frequency command without requiring a special device and special operation and without deteriorating access performance.For this purpose, a VCM current and a VCM voltage are measured and VCM back electromotive force is calculated based on both results. At seek operation, position information located on a magnetic disk is sampled and a traveling velocity is detected from the difference of the sampled result. VCM coil temperature is estimated from the difference between the traveling velocity and the VCM back electromotive force. The magnetic disk drive moves low velocity seek mode when the estimated value of this VCM coil temperature exceeded a specified value.
摘要翻译：在通过VCM执行磁头的寻道操作的磁盘驱动器中，具有优异的容错性能的特性，在恶劣的环境（例如高温）和高频命令的问题下不会产生故障，而不需要专用设备和特殊操作，不会恶化访问性能。为此，测量VCM电流和VCM电压，并基于两个结果计算VCM反电动势。在寻道操作中，对位于磁盘上的位置信息进行采样，并根据采样结果的差异来检测行驶速度。 VCM线圈温度由行进速度与VCM反电动势的差值估算。当该VCM线圈温度的估计值超过规定值时，磁盘驱动器移动低速寻道模式。

3. 发明授权

US5606470A Method and apparatus for controlling magnetoresistive effect element head 失效
标题翻译：用于控制磁阻效应元件头的方法和装置
公开(公告)号：US5606470A
公开(公告)日：1997-02-25
申请号：US397522
申请日：1995-03-02
申请人： Akio Shioya , Yuji Hata
发明人： Akio Shioya , Yuji Hata
IPC分类号： G11B5/00 , G11B5/02 , G11B5/40 , G11B5/55 , G11B5/584 , G11B5/596 , G11B19/04 , G11B5/03 , G11B5/127 , G11B5/58
CPC分类号： G11B5/553 , G11B19/04 , G11B5/40 , G11B5/5508 , G11B5/5547 , G11B5/584 , G11B5/59683 , G11B2005/0018
摘要： When a magnetic recording and reproducing apparatus is in a waiting state, feedback control for positioning the carriage is released, and a supply of a sense current to the magnetoresistive effect element of the MR magnetic head is adjusted so as to prolong the life of the MR magnetic head. When the interface and control circuit recognizes that there is no order from the host computer and that the magnetic recording and reproducing apparatus is in a wait state, the servo control circuit releases the feedback control for positioning the head. A mode, etc. selection control circuit controls the recording/reproduction amplifier so as not to supply a sense current to the magnetoresistive effect element of the MR magnetic head. Accordingly, the time for supplying a sense current to the magnetoresistive effect element of the MR magnetic head is reduced in a great measure and, therefore, it is possible to prevent the deterioration of the element characteristics by electro-migration or the like. The result is that the life of the element can be prolonged. Hence, the output of the MR magnetic head can be increased without sacrificing the reliability. Accordingly, it has become possible to improve the performance of a high-output magnetic recording and reproducing apparatus using an MR magnetic head.
摘要翻译：当磁记录和再现装置处于等待状态时，释放用于定位滑架的反馈控制，并且调整向MR磁头的磁阻效应元件提供感测电流以延长MR的寿命磁头。当接口和控制电路识别出没有来自主机的命令并且磁记录和再现装置处于等待状态时，伺服控制电路释放用于定位磁头的反馈控制。模式等选择控制电路控制记录/再现放大器，以便不向MR磁头的磁阻效应元件提供感测电流。因此，为MR磁头的磁阻效应元件提供感应电流的时间大大降低，因此可以通过电迁移等来防止元件特性的劣化。结果是元素的寿命可以延长。因此，可以增加MR磁头的输出而不牺牲可靠性。因此，可以提高使用MR磁头的高输出磁记录和再现装置的性能。

4. 发明授权

US08369040B2 Storage control device and rotation speed control method for storage device 有权
标题翻译：存储设备的存储控制装置和转速控制方法
公开(公告)号：US08369040B2
公开(公告)日：2013-02-05
申请号：US12668638
申请日：2009-11-17
申请人： Yukiyoshi Takamura , Tomohisa Ogasawara , Yuji Hata
发明人： Yukiyoshi Takamura , Tomohisa Ogasawara , Yuji Hata
IPC分类号： G11B19/28
CPC分类号： G11B19/209 , G11B33/128
摘要： To provide a storage control device capable of changing the rotation speed of storage devices.A plurality of hard disk drives 1 is mounted in the device mounting unit 7. The rotation speed control unit 2 detects the mounting location of each hard disk drive 1, and determines the rotation speed in accordance with the location of each hard disk drive 1. The rotation speeds of adjacent hard disk drives 1 are different from each other. The rotation speed control unit 2 changes the rotation speed of each hard disk drive 1 to the determined rotation speed.
摘要翻译：提供能够改变存储装置的转速的存储控制装置。多个硬盘驱动器1安装在装置安装单元7中。转速控制单元2检测每个硬盘驱动器1的安装位置，并根据每个硬盘驱动器1的位置确定转速。相邻硬盘驱动器1的旋转速度彼此不同。转速控制单元2将每个硬盘驱动器1的转速改变到所确定的转速。

5. 发明授权

US5241435A Servo information recording method for a storage apparatus 失效
标题翻译：一种存储装置的伺服信息记录方法
公开(公告)号：US5241435A
公开(公告)日：1993-08-31
申请号：US541724
申请日：1990-06-21
申请人： Shigeyoshi Saito , Yuji Hata , Takuji Ogawa , Jyousei Shimizu , Tsuyoshi Takahashi , Masahiko Sega , Kazuo Ono
发明人： Shigeyoshi Saito , Yuji Hata , Takuji Ogawa , Jyousei Shimizu , Tsuyoshi Takahashi , Masahiko Sega , Kazuo Ono
IPC分类号： G11B5/596
CPC分类号： G11B5/59633
摘要： A method of recording a servo signal on each track of a magnetic disk includes a first signal for demagnetizing the magnetic disk and a second signal for forming the servo signal. The recording width (core width) of the magnetic head is made greater than the width of the track. Parts for recording signals and not recording signals are set in each track. The first and second signals are selected and recorded in the signal recording part, thereby to form the servo signal. Current to be conducted to the magnetic head is cut in the part for not recording signals, and the track is skipped to the next part for recording signals. When the recording of the track has ended, the magnetic head is moved to the next track, and the above steps are repeated.
摘要翻译：在磁盘的每个磁道上记录伺服信号的方法包括用于磁化磁化的第一信号和用于形成伺服信号的第二信号。使磁头的记录宽度（磁心宽度）大于磁道的宽度。在每个轨道中设置用于记录信号而不记录信号的部分。第一和第二信号被选择并记录在信号记录部分中，从而形成伺服信号。要在磁头上传输的电流被切断，不记录信号，并将磁道跳到下一部分进行记录信号。当轨道的记录结束时，磁头被移动到下一个轨道，并重复上述步骤。

6. 发明授权

US5402400A Method and apparatus for eliminating external disturbances in a disk drive device 失效
标题翻译：用于消除磁盘驱动装置中的外部干扰的方法和装置
公开(公告)号：US5402400A
公开(公告)日：1995-03-28
申请号：US109593
申请日：1993-08-20
申请人： Yosuke Hamada , Haruaki Otsuki , Yuji Hata , Shigeyoshi Saito
发明人： Yosuke Hamada , Haruaki Otsuki , Yuji Hata , Shigeyoshi Saito
IPC分类号： G11B21/08 , G11B17/22
CPC分类号： G11B21/083
摘要： A disk storage device comprises a microcomputer for estimating an external disturbance compensation signal and storing it and a first adder for adding the external disturbance compensation signal as a feedforward signal to a positioning compensation signal to a drive circuit. Where a positioning compensator for estimating a velocity signal based on a drive signal is provided, a difference signal between the drive signal and a signal proportional to the external disturbance compensation signal, instead of the drive signal, is applied to velocity estimation unit for correction.
摘要翻译：磁盘存储装置包括用于估计外部干扰补偿信号并存储的微计算机，以及用于将作为前馈信号的外部干扰补偿信号与定位补偿信号相加的驱动电路的第一加法器。在提供用于基于驱动信号估计速度信号的定位补偿器的情况下，驱动信号和与外部干扰补偿信号成比例的信号（而不是驱动信号）之间的差分信号被施加到用于校正的速度估计单元。

7. 发明申请

US20120127600A1 STORAGE CONTROL DEVICE AND ROTATION SPEED CONTROL METHOD FOR STORAGE DEVICE 有权
标题翻译：存储设备的存储控制设备和转速控制方法
公开(公告)号：US20120127600A1
公开(公告)日：2012-05-24
申请号：US12668638
申请日：2009-11-17
申请人： Yukiyoshi Takamura , Tomohisa Ogasawara , Yuji Hata
发明人： Yukiyoshi Takamura , Tomohisa Ogasawara , Yuji Hata
IPC分类号： G11B15/48
CPC分类号： G11B19/209 , G11B33/128
摘要： To provide a storage control device capable of changing the rotation speed of storage devices.A plurality of hard disk drives 1 is mounted in the device mounting unit 7. The rotation speed control unit 2 detects the mounting location of each hard disk drive 1, and determines the rotation speed in accordance with the location of each hard disk drive 1. The rotation speeds of adjacent hard disk drives 1 are different from each other. The rotation speed control unit 2 changes the rotation speed of each hard disk drive 1 to the determined rotation speed.
摘要翻译：提供能够改变存储装置的转速的存储控制装置。多个硬盘驱动器1安装在装置安装单元7中。转速控制单元2检测每个硬盘驱动器1的安装位置，并根据每个硬盘驱动器1的位置确定转速。相邻硬盘驱动器1的旋转速度彼此不同。转速控制单元2将每个硬盘驱动器1的转速改变到所确定的转速。

8. 发明授权

US06940684B2 Disk device and seek control method 失效
标题翻译：磁盘设备和查找控制方式
公开(公告)号：US06940684B2
公开(公告)日：2005-09-06
申请号：US10370579
申请日：2003-02-24
申请人： Masaki Yoshioka , Kenichi Masuda , Yuji Hata , Takeshi Nakazawa , Takayuki Umemoto
发明人： Masaki Yoshioka , Kenichi Masuda , Yuji Hata , Takeshi Nakazawa , Takayuki Umemoto
IPC分类号： G11B21/08 , G11B5/00 , G11B5/40 , G11B5/55 , G11B27/36 , G11B5/596
CPC分类号： G11B27/36 , G11B5/40 , G11B5/5547 , G11B2005/001 , G11B2005/0016 , G11B2220/20
摘要： When a head passes over a track with a projected item in a seek operation, the CPU delays a seek start time to conduct the seek by changing a period of time from a seek start position to a position of the track with a projected item. Or, the CPU conducts seek control by changing a speed table. Or, the CPU changes a sequence of items of a tag queue to obtain a seek locus not passing the projected item. By the control operation, a seek error due to thermal asperity is prevented and the head is not damaged. This also prevents appearance of a new projected item produced by contact between the magneto-resistive head and the projected item on the recording medium.
摘要翻译：当在搜索操作中头部经过预定项目的轨道时，CPU通过将具有预测项目的从搜索开始位置到轨道的位置的时间段改变来延迟搜索开始时间以进行搜索。或者，CPU通过更改速度表来进行搜索控制。或者，CPU更改标签队列的一系列项目以获得未通过投影项目的搜索轨迹。通过控制操作，防止由于热凹凸而产生的寻道误差，并且头部不被损坏。这也防止了通过磁阻头与记录介质上的投影物体之间的接触产生的新的投影物品的外观。

9. 发明授权

US06744591B2 Positioning control method 失效
标题翻译：定位控制方法
公开(公告)号：US06744591B2
公开(公告)日：2004-06-01
申请号：US09742058
申请日：2000-12-22
申请人： Shinsuke Nakagawa , Yuji Hata , Hiromoto Takeda , Kiyotada Ito , Takashi Yamaguchi
发明人： Shinsuke Nakagawa , Yuji Hata , Hiromoto Takeda , Kiyotada Ito , Takashi Yamaguchi
IPC分类号： G11B5596
CPC分类号： G11B5/59627
摘要： A positioning control method of a magnetic disc apparatus is provided which can permit fast and stable settling to a target position without overshoot or undershoot in connection with a moving distance of one track seek to about 16-track seek for which positioning must be determined within a moving time corresponding to a resonance frequency of a mechanical system. Such a method can also generate a position/velocity orbit for reducing power at a specified frequency, provide acceleration feed-forward compensation which can permit a head to accurately reach the target position even when the feedback system does not function under a condition that external disturbance does not act and generate a position orbit corrected by a controlled object model accurately modeling resonance oscillation up to a moving frequency band are used in combination.
摘要翻译：提供了一种磁盘装置的定位控制方法，其可以允许对目标位置的快速和稳定的稳定，而无需过冲或下冲，与一个轨道寻道的移动距离相关联到大约16轨道寻道，其中必须在移动时间对应于机械系统的共振频率。这种方法还可以产生用于降低指定频率的功率的位置/速度轨道，提供加速前馈补偿，即使当反馈系统在外部干扰的条件下不起作用时，其能够准确地达到目标位置不会起作用并产生通过受控对象模型校正的位置轨道，将共振振荡精确地建模到移动频带。

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