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    • 74. 发明授权
    • Head seek control method suppressing vibrations and rotatary recorder/reproducer
    • 抑制振动的头部寻道控制方法和旋转录像机/再现器
    • US07457076B2
    • 2008-11-25
    • US11335849
    • 2006-01-18
    • Tetsuo SembaHiroshi Uchida
    • Tetsuo SembaHiroshi Uchida
    • G11B5/596
    • G11B5/5547G11B5/5586
    • In seek control for a head of a rotary recorder/reproducer, the seek time is reduced with noise reduced while utilizing a driving force of an actuator effectively. In one embodiment, when a microprocessor generates a control signal for a drive current given to an actuator for head seek, a signal generator generates a prespecified acceleration allowing for the allowable maximum acceleration when the actuator is accelerated, a prespecified deceleration signal allowing for the allowable maximum deceleration when the actuator is decelerated, and a zero level signal when the actuator is settled. Switching from deceleration to settling is performed at a point of time computed by the microprocessor as a time point when settling is to be started so that the head may reach a target position within the shortest period of time.
    • 在用于旋转记录器/再现器的头部的寻道控制中,在有效地利用致动器的驱动力的同时,寻求时间减少,噪声降低。 在一个实施例中,当微处理器产生用于头部寻道的致动器的驱动电流的控制信号时,信号发生器产生预先指定的加速度,允许执行器被加速时允许的最大加速度,预定的减速信号允许允许 执行器减速时的最大减速度,执行机构稳定时为零电平信号。 从减速到稳定的切换是在由微处理器计算的时间点作为开始建立的时间点执行的,以便头部可以在最短时间内到达目标位置。
    • 75. 发明申请
    • Magnetic disk drive and method of controlling the same
    • 磁盘驱动器及其控制方法
    • US20080285170A1
    • 2008-11-20
    • US12152756
    • 2008-05-16
    • Hiroshi UchidaGaku Ikedo
    • Hiroshi UchidaGaku Ikedo
    • G11B21/02
    • G11B5/5582G01H1/003G11B19/042
    • Embodiments of the present invention provide a magnetic disk drive, in which a disturbance component contained in an output signal from a rotational vibration detector, can be appropriately suppressed irrespective of frequency of the component, and a method of controlling the drive. According to one embodiment, in a magnetic disk drive having a rotational vibration detector for detecting rotational vibration of a drive housing, a main control circuit performs a head moving step of driving a voice coil motor to move a magnetic head on a magnetic disk, a frequency estimation step of estimating a frequency of each disturbance component contained in an output signal from the rotational vibration detector after moving the magnetic head, and a suppressor setting step of setting a notch filter for suppressing the disturbance component based on the estimated frequency.
    • 本发明的实施例提供了一种磁盘驱动器,其中可以适当地抑制来自旋转振动检测器的输出信号中包含的干扰分量,而不考虑部件的频率,以及控制驱动的方法。 根据一个实施例,在具有用于检测驱动器壳体的旋转振动的旋转振动检测器的磁盘驱动器中,主控制电路执行驱动音圈电机以使磁头移动到磁盘上的磁头移动步骤, 频率估计步骤,用于在移动磁头之后估计来自旋转振动检测器的输出信号中包含的每个扰动分量的频率;以及抑制器设置步骤,基于估计的频率设置用于抑制干扰分量的陷波滤波器。
    • 76. 发明授权
    • Data storage device and data storage device control
    • 数据存储设备和数据存储设备控制
    • US07436614B2
    • 2008-10-14
    • US11143511
    • 2005-06-01
    • Hiroshi Uchida
    • Hiroshi Uchida
    • G11B15/14
    • G11B19/04G11B5/40G11B5/5526G11B27/034G11B27/322G11B2220/2516
    • Embodiments of the invention provide a data storage device and its control method that are capable of minimizing the possibility of head deterioration while maintaining the minimum required sustained data rate. In one embodiment, each track is divided into three areas (A, B, and C). When a ⅓ track is accessed, the head is changed to access a ⅓ track on the next recording surface. In this instance, LBAs are assigned to disks so that heads Hd0 through Hd4, which access both surfaces of disks 0 and 1, are selected for accessing purposes in the Hd0, Hd1, Hd2, Hd3, Hd0, and Hd1 order while an area selection is made in the area A, area B, and area C order.
    • 本发明的实施例提供一种数据存储装置及其控制方法,其能够在保持最小所需持续数据速率的同时最大限度地降低磁头劣化的可能性。 在一个实施例中,每个轨道被分成三个区域(A,B和C)。 当访问1/3轨道时,头部被更改为访问下一个记录表面上的1/3轨道。 在这种情况下,将LBA分配给磁盘,使得访问磁盘0和1的两个表面的磁头Hd 0至Hd 4被选择用于Hd 0,Hd 1,Hd 2,Hd 3,Hd 0, 并在区域A,区域B和区域C顺序中进行区域选择。
    • 77. 发明申请
    • Magnetic disk drive
    • 磁盘驱动器
    • US20070253100A1
    • 2007-11-01
    • US11796228
    • 2007-04-26
    • Hiroshi UchidaIsao YonedaHideki Ohzeki
    • Hiroshi UchidaIsao YonedaHideki Ohzeki
    • G11B5/596
    • G11B5/5526
    • Embodiments in accordance with the present invention provide a magnetic disk drive with reduced noise during seek operation without causing any delay in control response. According to one embodiment of the present invention, a control circuit of a magnetic disk drive controls the drive power supplied to a voice coil motor during a seek operation adapted to move a magnetic head over a target track formed on a magnetic disk so as to bring the travel speed of the magnetic head close to a predetermined target speed. The control circuit determines a provisional current according to the difference between the predetermined target speed and an actual travel speed in an acceleration zone adapted to accelerate the magnetic head to the predetermined target speed. If the provisional current exceeds a limit specified in relation to an elapsed time from the start of acceleration, the control circuit sets the limit as the current of the drive power supplied to the voice coil motor to control the motor.
    • 根据本发明的实施例提供一种在寻道操作期间具有降低的噪声的磁盘驱动器,而不会导致控制响应的任何延迟。 根据本发明的一个实施例,磁盘驱动器的控制电路在搜索操作期间控制提供给音圈电机的驱动电力,以便将磁头移动到形成在磁盘上的目标磁道上,以便带动 磁头的行进速度接近预定的目标速度。 控制电路根据预定目标速度与适于将磁头加速到预定目标速度的加速区域中的实际行驶速度之间的差异来确定临时电流。 如果临时电流超过关于从加速开始起的经过时间规定的限制,则控制电路将限制设定为作为提供给音圈电动机的驱动电力的电流以控制电动机。
    • 78. 发明申请
    • Magnetic recording apparatus
    • 磁记录装置
    • US20070230025A1
    • 2007-10-04
    • US11725038
    • 2007-03-15
    • Hiroshi UchidaMirei HosonoHideki OhzekiTetsuo Ueda
    • Hiroshi UchidaMirei HosonoHideki OhzekiTetsuo Ueda
    • G11B5/596
    • G11B5/59627
    • Embodiments of the present invention provide a magnetic recording apparatus capable of generating RRO compensation information that can expand the disturbance frequency range in which to compensate for RRO. Embodiments of the present invention describe a magnetic recording apparatus that uses a plurality of repetitive control systems to detect repeatable runout during the rotation of a magnetic recording medium for a frequency characteristic of each of the repetitive control systems. The magnetic recording apparatus further generates compensation information to compensate for each of the detected repeatable runout. The magnetic recording apparatus still further writes the compensation information generated for each of the repetitive control systems to a servo signal, thus suppressing and controlling the repeatable runout.
    • 本发明的实施例提供一种磁记录装置,其能够产生可以扩大其中补偿RRO的干扰频率范围的RRO补偿信息。 本发明的实施例描述了一种磁记录装置,其使用多个重复控制系统来检测用于每个重复控制系统的频率特性的磁记录介质旋转期间的可重复跳动。 磁记录装置进一步产生补偿信息以补偿每个检测到的可重复跳动。 磁记录装置还将针对每个重复控制系统生成的补偿信息写入伺服信号,从而抑制和控制可重复的跳动。
    • 80. 发明授权
    • Seek trajectory generation using adaptive filtering
    • 使用自适应滤波寻找轨迹生成
    • US07206162B2
    • 2007-04-17
    • US11000680
    • 2004-11-30
    • Tetsuo SembaMatthew WhiteHiroshi Uchida
    • Tetsuo SembaMatthew WhiteHiroshi Uchida
    • G11B5/596G11B5/58G11B5/55
    • G11B5/5547
    • Embodiments of the present invention provide a method and a system for generating optimal feedforward signal for the seek control to suppress the RTV (Random Transient Vibrations) and the seek acoustic noise. One aspect is directed to a method of providing a revised feedforward signal using an adaptive filter in a feedforward control system for controlling an actuator to move a head to seek a track and settle on the track of a disk in a disk drive apparatus. The method comprises performing a seek operation of the head using an initial feedforward signal; obtaining an error signal at settling after performing the seek operation; determining filter characteristics of the adaptive filter to minimize the error signal; and implementing the adaptive filter having the determined filter characteristics in the feedforward control system to produce a revised feedforward signal for controlling the actuator for moving the head in the disk drive apparatus.
    • 本发明的实施例提供了一种用于产生用于搜索控制以抑制RTV(随机瞬态振荡)和寻呼声学噪声的最佳前馈信号的方法和系统。 一个方面涉及一种在前馈控制系统中使用自适应滤波器来提供修正的前馈信号的方法,用于控制致动器移动磁头以寻找磁道并将其稳定在盘驱动装置中的盘的轨道上。 该方法包括使用初始前馈信号来执行头的寻道操作; 在执行寻道操作之后获得沉降中的误差信号; 确定自适应滤波器的滤波器特性以最小化误差信号; 并且在前馈控制系统中实现具有确定的滤波器特性的自适应滤波器,以产生用于控制用于在盘驱动装置中移动磁头的致动器的修正前馈信号。