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1. 发明授权

US06351343B1 Arrangement structure of the printed circuit board and the interface cable connector of a magnetic disk drive 失效
标题翻译：印刷电路板的布置结构和磁盘驱动器的接口电缆连接器
公开(公告)号：US06351343B1
公开(公告)日：2002-02-26
申请号：US08798443
申请日：1997-02-10
申请人： Yuzo Nakagawa , Kiyoshi Satoh , Hiroki Kitahori , Naoyuki Kagami
发明人： Yuzo Nakagawa , Kiyoshi Satoh , Hiroki Kitahori , Naoyuki Kagami
IPC分类号： G11B3312
CPC分类号： G11B25/043 , G11B33/122
摘要： An arrangement structure of the printed circuit board and the interface cable connector of a magnetic disk drive for increasing the degree of freedom of the arrangement of a spindle motor, and for minimizing the size of a printed circuit board. An interface cable connector is disposed on the side opposite to the spindle motor, and the printed circuit board is sized so as not to contact with the spindle motor in the height direction. This allows the degree of freedom of the arrangement of the spindle motor to increase. Further, the distance between the interface cable connector and the preamplifier connector on the printed circuit board is short. Thus, the size of the printed circuit board can be made as small as possible.
摘要翻译：印刷电路板和磁盘驱动器的接口电缆连接器的布置结构，用于增加主轴电动机布置的自由度，并使印刷电路板的尺寸最小化。接口电缆连接器设置在与主轴电动机相对的一侧，并且印刷电路板的尺寸设计成不在高度方向上与主轴电动机接触。这允许主轴电动机的布置的自由度增加。此外，接口电缆连接器和印刷电路板上的前置放大器连接器之间的距离很短。因此，可以使印刷电路板的尺寸尽可能小。

2. 发明授权

US6122139A Disk drive rotary actuator system including synchronous counter torque generator 失效
标题翻译：磁盘驱动旋转执行器系统包括同步反转矩发生器
公开(公告)号：US6122139A
公开(公告)日：2000-09-19
申请号：US119184
申请日：1998-07-20
申请人： Sri Muthuthamby Sri-Jayantha , Arun Sharma , Hien Phu Dang , Vijayeshwar Khanna , Gerard McVicker , Kiyoshi Satoh , Yuzo Nakagawa , Naoyuki Kagami
发明人： Sri Muthuthamby Sri-Jayantha , Arun Sharma , Hien Phu Dang , Vijayeshwar Khanna , Gerard McVicker , Kiyoshi Satoh , Yuzo Nakagawa , Naoyuki Kagami
IPC分类号： G11B25/04 , G11B33/08 , G11B33/12 , G11B33/14
CPC分类号： G11B25/043 , G11B33/08 , G11B33/121
摘要： A disk drive system, includes an arm for mounting a head, and at least one component, coupled to the arm, for being synchronized to maintain a zero net angular momentum of the arm and the at least one component. Another disk drive system including a read/write head, includes a torque counter-generating member for being synchronized to maintain a zero net angular momentum of the head.
摘要翻译：磁盘驱动系统包括用于安装头部的臂和耦合到臂的至少一个部件，用于同步以保持臂和至少一个部件的零净角动量。包括读/写头的另一个磁盘驱动器系统包括用于同步以保持磁头的零净角度动量的扭矩计数器生成构件。

3. 发明授权

US06549349B2 Adaptive vibration control for servo systems in data storage devices 失效
标题翻译：数据存储设备伺服系统的自适应振动控制
公开(公告)号：US06549349B2
公开(公告)日：2003-04-15
申请号：US09955391
申请日：2001-09-18
申请人： Sri Muthuthamby Sri-Jayantha , Arun Sharma , Hien Phu Dang , Naoyuki Kagami , Yuzo Nakagawa , Akira Tokizono , Isao Yoneda
发明人： Sri Muthuthamby Sri-Jayantha , Arun Sharma , Hien Phu Dang , Naoyuki Kagami , Yuzo Nakagawa , Akira Tokizono , Isao Yoneda
IPC分类号： G11B2736
CPC分类号： G11B21/106 , G11B5/59611
摘要： Methods and systems for detecting and correcting for undesirable vibrations impacting the servo systems in data storage devices. A detection technique is provided wherein a detection filter is configured to scan a position signal of the servo system across a range of frequencies, and, at each respective scanned frequency, record an amplitude associated therewith. The recorded amplitudes are examined to determine whether any exceed a threshold, thereby locating a peak frequency of the vibration. Using the detected peak frequency of the vibration, a corrective filter is configured to operate about the peak frequency of vibration, thereby reducing its impact on the position signal in the servo system. Optimum detection and correction filter structures are disclosed, as are techniques for addressing filter state vectors as initial conditions as the corrective filters are repeatedly engaged during successive settle-out and track follow cycles (between seeks), as are continuous adaptation techniques for changing vibration environments.
摘要翻译：用于检测和校正影响数据存储设备中的伺服系统的不期望的振动的方法和系统。提供了一种检测技术，其中检测滤波器被配置为扫描频率范围内的伺服系统的位置信号，并且在每个相应的扫描频率处记录与之相关联的振幅。检查记录的振幅以确定是否有超过阈值，从而定位振动的峰值频率。使用检测到的振动峰值频率，校正滤波器被配置为围绕振动的峰值频率运行，从而减小其对伺服系统中位置信号的影响。公开了最佳检测和校正滤波器结构，作为用于将滤波器状态向量寻址作为初始条件的技术，校正滤波器在连续的稳定和跟踪周期（寻找之间）期间重复接合），以及用于改变振动环境的连续自适应技术。

4. 发明授权

US5872677A Magnetic head position detecting method and magnetic disk apparatus 失效
标题翻译：磁头位置检测方法和磁盘装置
公开(公告)号：US5872677A
公开(公告)日：1999-02-16
申请号：US735689
申请日：1996-10-23
申请人： Naoyuki Kagami , Akira Tokizono , Yuzo Nakagawa
发明人： Naoyuki Kagami , Akira Tokizono , Yuzo Nakagawa
IPC分类号： G11B5/596
CPC分类号： G11B5/596
摘要： A magnetic head position detecting method is provided in which a first and a second position detection signal representative of a particular position of a magnetic head with respect to a magnetic disk is obtained. The first and the second position detection signal preferably is obtained by utilizing a burst pattern formed on the magnetic disk. Subsequently, a third position detection signal is generated by multiplying the first and the second position detection signals by a predetermined gain so that the third position detection signal changes linearly. The particular position of the magnetic head is detected by using the third position detection signal. In addition, a magnetic disk apparatus implementing the magnetic head position detecting method is provided.
摘要翻译：提供一种磁头位置检测方法，其中获得表示磁头相对于磁盘的特定位置的第一和第二位置检测信号。优选地，通过利用形成在磁盘上的脉冲串图形来获得第一和第二位置检测信号。随后，通过将第一和第二位置检测信号乘以预定的增益使得第三位置检测信号线性地变化来产生第三位置检测信号。通过使用第三位置检测信号来检测磁头的特定位置。另外，提供了实现磁头位置检测方法的磁盘装置。

5. 发明授权

US06678109B2 Disk drive, servo control unit, and control unit 有权
标题翻译：磁盘驱动器，伺服控制单元和控制单元
公开(公告)号：US06678109B2
公开(公告)日：2004-01-13
申请号：US09133464
申请日：1998-08-13
申请人： Naoyuki Kagami , Masayuki Murakami , Yuzo Nakagawa , Tatsuya Sakai
发明人： Naoyuki Kagami , Masayuki Murakami , Yuzo Nakagawa , Tatsuya Sakai
IPC分类号： G11B5596
CPC分类号： G11B5/59611
摘要： A disk drive, a servo controller, and a controller which have realized high-degree control by lightening processing load to a microprocessor unit (MPU) without increasing cost is disclosed. An analog/digital (AD) converter (ADC) performs the AD conversions of the regenerated levels A, B, C, and D of burst patterns supplied from a channel and retains the converted levels in an ADC register. A servo assist (SA) computes parameters, such as the position error of a head, independently of an MPU, based on the regenerated levels of the burst patterns retained in the ADC register and an instruction from the MPU retained in a SRAM. Based on the computed parameters, the SA computes servo data (DACOUT) for driving a voice coil motor and supplies the servo data to the DAC section of a VCM driver section through a SIO.
摘要翻译：公开了一种磁盘驱动器，伺服控制器和控制器，其通过将处理负载减轻到微处理器单元（MPU）而不增加成本而实现了高度的控制。模拟/数字（AD）转换器（ADC）执行从通道提供的脉冲串模式的再生电平A，B，C和D的AD转换，并将转换后的电平保持在ADC寄存器中。伺服辅助（SA）基于保留在ADC寄存器中的脉冲串模式的再生电平和来自保留在SRAM中的MPU的指令，而独立于MPU来计算头部的位置误差等参数。基于计算出的参数，SA计算用于驱动音圈电机的伺服数据（DACOUT），并通过SIO将伺服数据提供给VCM驱动器部分的DAC部分。

6. 发明授权

US06831809B2 Rotary recording apparatus and method of controlling the apparatus 失效
标题翻译：旋转记录装置及其控制方法
公开(公告)号：US06831809B2
公开(公告)日：2004-12-14
申请号：US10086204
申请日：2002-02-27
申请人： Naoyuki Kagami , Kenji Okada , Tetsuo Semba , Akira Tokizono , Hiroshi Uchida , Akinori Yuba
发明人： Naoyuki Kagami , Kenji Okada , Tetsuo Semba , Akira Tokizono , Hiroshi Uchida , Akinori Yuba
IPC分类号： G11B5596
CPC分类号： G11B5/59622
摘要： A control arrangement having a feedforward system and a feedback system, a control model for generating reference position data from a feedforward control signal is separated into an original control model and a compensation filter. Gain of the feedforward control signal is compensated by a gain compensation circuit to form a feedforward control signal after compensation. The reference position data is input to a feedback controller, and a feedback control signal and feedforward control signal are input to a control object. Coefficients of the compensation filter and the gain compensation circuit are compensated on the basis of a head position trajectory obtained by actual seek operation.
摘要翻译：具有前馈系统和反馈系统的控制装置，用于从前馈控制信号产生参考位置数据的控制模型被分离成原始控制模型和补偿滤波器。前馈控制信号的增益由增益补偿电路补偿，以在补偿后形成前馈控制信号。参考位置数据被输入到反馈控制器，反馈控制信号和前馈控制信号被输入到控制对象。补偿滤波器和增益补偿电路的系数基于通过实际寻道操作获得的磁头位置轨迹进行补偿。

7. 发明授权

US06707634B2 Control method and apparatus for reducing the effects of hard disk contamination 失效
标题翻译：减少硬盘污染影响的控制方法和装置
公开(公告)号：US06707634B2
公开(公告)日：2004-03-16
申请号：US09950465
申请日：2001-09-10
申请人： Naoyuki Kagami , Masayuki Kanamaru , Shunichiroh Ohta , Akira Tokizono , Toshihiko Tsunokawa
发明人： Naoyuki Kagami , Masayuki Kanamaru , Shunichiroh Ohta , Akira Tokizono , Toshihiko Tsunokawa
IPC分类号： G11B3314
CPC分类号： G11B5/012 , G11B5/41 , G11B5/54 , G11B21/22 , G11B33/14 , G11B33/1446
摘要： A method and apparatus for use with a rotating storage device. The rotating storage device includes a storage medium driven to rotate, a head for reading and writing information on the storage medium and a ramped loading mechanism in which the head is stored. In accordance with the method of the present invention, the head is loaded from the ramped loading mechanism onto the storage medium. Next, location information stored in the storage medium via the head is read. A location of the head is then retained for a predetermined period above a track of a region other than a valid storage region of the storage medium after successfully reading the location information.
摘要翻译：一种与旋转存储装置一起使用的方法和装置。旋转存储装置包括被驱动旋转的存储介质，用于在存储介质上读取和写入信息的磁头以及其中存储磁头的倾斜加载机构。根据本发明的方法，将头从斜坡加载机构装载到存储介质上。接下来，读取通过头部存储在存储介质中的位置信息。在成功读取位置信息之后，头部的位置被保持在存储介质的有效存储区域以外的区域的轨道上方的预定时段。

8. 发明授权

US06263462B1 Testing method and tester 失效
标题翻译：测试方法和测试仪
公开(公告)号：US06263462B1
公开(公告)日：2001-07-17
申请号：US09122223
申请日：1998-07-24
申请人： Akiro Hatano , Naoyuki Kagami , Nobuya Matsubara
发明人： Akiro Hatano , Naoyuki Kagami , Nobuya Matsubara
IPC分类号： G11C2900
CPC分类号： G06F11/2221 , G11B20/1816
摘要： The present invention relates to a testing method and tester which reliably flags errors in disk drives, thereby reducing disk failures. In the testing method and tester, a random error due to noise occurs anywhere in a sector (read)/cylinder (write), whereas a repeatable error occurs in a specific area on a disk. If a plurality of random errors occur in the same sector or cylinder, no flagging is performed if the occurrence positions are distant from each other.
摘要翻译：本发明涉及可靠地标记磁盘驱动器中的错误的测试方法和测试器，从而减少磁盘故障。在测试方法和测试仪中，在扇区（读取）/圆柱（写）中的任何地方发生由于噪声引起的随机误差，而在盘上的特定区域中发生可重复的错误。如果多个随机错误发生在相同的扇区或圆柱体中，则如果发生位置彼此相距，则不执行标记。

9. 发明授权

US5255253A Apparatus and method for controlling the velocity of a disk storage head 失效
标题翻译：用于控制盘存储头的速度的装置和方法
公开(公告)号：US5255253A
公开(公告)日：1993-10-19
申请号：US772725
申请日：1991-10-07
申请人： Naoyuki Kagami , Hiroaki Kubo , Keiichi Okada , Makoto Takekoshi
发明人： Naoyuki Kagami , Hiroaki Kubo , Keiichi Okada , Makoto Takekoshi
IPC分类号： G11B7/085 , G11B21/08 , G11B7/00
CPC分类号： G11B7/08517 , G11B21/083 , G11B7/08535
摘要： In this invention, a driving circuit for moving a head in the radial direction on the recording surface of a disk is coupled to a velocity detecting circuit for detecting the velocity at which the head moves. A velocity profile is provided for storing information on the target velocity of the head. A driving signal generating circuit is coupled to the velocity profile and the velocity detecting circuit for comparing a signal from the velocity detecting circuit with a signal from the velocity profile. The driving signal generating circuit outputs a driving signal to the driving circuit based on the result of the comparison. A controller is coupled to the driving circuit for measuring a time required for moving the head a predetermined distance at a predetermined reference value, and modifying the driving signal based on the result of the comparison. Scatter in feedback quantities or fluctuation in the driving signal during velocity control is thereby corrected.

10. 发明授权

US5249168A Method and apparatus for initializing optical disk drive apparatus 失效
标题翻译：用于初始化光盘驱动装置的方法和装置
公开(公告)号：US5249168A
公开(公告)日：1993-09-28
申请号：US755953
申请日：1991-09-06
申请人： Naoyuki Kagami , Hiroaki Kubo , Hideo Ueno
发明人： Naoyuki Kagami , Hiroaki Kubo , Hideo Ueno
IPC分类号： G11B21/08 , G11B7/085 , G11B7/09
CPC分类号： G11B7/0945 , G11B7/08529 , G11B7/08541
摘要： A method and apparatus for initializing disk drive apparatus wherein a pickup head is positioned near the mid-range of tracks on a disk by moving the head at power-on to an innermost track and thereafter moving the head outwardly. As outward movement begins, a tracking error signal is sensed to indicate a track crossing, and the number of tracks crossed are counted until the head is at the mid-range of tracks. A velocity profile is used to speed movement of the head to its destination.

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