公开(公告)号：US07126784B2

公开(公告)日：2006-10-24

申请号：US11012460

申请日：2004-12-14

申请人： Tetsuya Tamura ,  Tetsuo Semba ,  Hiroshi Uchida

发明人： Tetsuya Tamura ,  Tetsuo Semba ,  Hiroshi Uchida

IPC分类号： G11B5/596

CPC分类号： G11B5/5547

摘要： In conventional magnetic disk drives where stream data are treated, seek operations are performed at unnecessarily high speeds. This put the magnetic disk drives at a disadvantage in suppressing noise, reducing power consumption, and lowering the costs of actuator components. In one embodiment of the invention, a magnetic disk drive comprises a magnetic disk medium; a magnetic head; a head actuator to move the magnetic head relative to the magnetic disk medium; and a controller configured to control the head actuator to move the magnetic head to record data to and reproduce data from the magnetic disk medium. The controller is configured to control the magnetic head to record stream data on the magnetic disk medium in such a manner that the stream data is recognizable as stream data. The controller is configured to detect a situation in which two or more stream data are to be recorded or reproduced concurrently so as to set a slower seek operation mode.

摘要翻译： 在处理流数据的常规磁盘驱动器中，以不必要的高速执行查找操作。 这使得磁盘驱动器处于抑制噪声，降低功耗和降低致动器部件成本的缺点。 在本发明的一个实施例中，磁盘驱动器包括磁盘介质; 磁头; 头致动器，用于相对于磁盘介质移动磁头; 以及控制器，被配置为控制头致动器以移动磁头以将数据记录到磁盘介质并从其再现数据。 控制器被配置为控制磁头以将流数据识别为流数据的方式在磁盘介质上记录流数据。 控制器被配置为检测要同时记录或再现两个或多个流数据以便设置较慢的寻道操作模式的情况。

公开(公告)号：US07457076B2

公开(公告)日：2008-11-25

申请号：US11335849

申请日：2006-01-18

申请人： Tetsuo Semba ,  Hiroshi Uchida

发明人： Tetsuo Semba ,  Hiroshi Uchida

IPC分类号： G11B5/596

CPC分类号： G11B5/5547 ,  G11B5/5586

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07206162B2

公开(公告)日：2007-04-17

申请号：US11000680

申请日：2004-11-30

申请人： Tetsuo Semba ,  Matthew White ,  Hiroshi Uchida

发明人： Tetsuo Semba ,  Matthew White ,  Hiroshi Uchida

IPC分类号： G11B5/596 ,  G11B5/58 ,  G11B5/55

CPC分类号： G11B5/5547

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20060158773A1

公开(公告)日：2006-07-20

申请号：US11335849

申请日：2006-01-18

申请人： Tetsuo Semba ,  Hiroshi Uchida

发明人： Tetsuo Semba ,  Hiroshi Uchida

IPC分类号： G11B5/596

CPC分类号： G11B5/5547 ,  G11B5/5586

摘要： 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.

摘要翻译： 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，允许致动器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。

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。

公开(公告)号：US07010653B2

公开(公告)日：2006-03-07

申请号：US10405523

申请日：2003-04-02

申请人： Hiroshi Uchida ,  Tetsuo Semba ,  Tomoyuki Oyama

发明人： Hiroshi Uchida ,  Tetsuo Semba ,  Tomoyuki Oyama

IPC分类号： G06F13/14

CPC分类号： G06F3/0659 ,  G06F1/32 ,  G06F3/0625 ,  G06F3/0676 ,  Y02D10/154

摘要： A method and system to provide a command queue re-ordering method that can make the power save and reduction in acoustic noise. The command queue re-ordering method involves calculating the value of an evaluation function, Ev=A×T+(1−A)×Fun(L) (A is any number from 0 to 1, T is a latency required to execute a write command and/or read command, and Fun(L) is an evaluation function with a seek distance L) for the write command and/or read command, and selecting the write command and/or read command having the minimum value as a next command to be execute.

公开(公告)号：US20060114601A1

公开(公告)日：2006-06-01

申请号：US11000680

申请日：2004-11-30

申请人： Tetsuo Semba ,  Matthew White ,  Hiroshi Uchida

发明人： Tetsuo Semba ,  Matthew White ,  Hiroshi Uchida

IPC分类号： G11B5/596

CPC分类号： G11B5/5547

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07787748B2

公开(公告)日：2010-08-31

申请号：US10724913

申请日：2003-12-01

申请人： Takayuki Kinoshita ,  Hiroshi Oshikawa ,  Tetsuya Tamura ,  Hiroshi Uchida

发明人： Takayuki Kinoshita ,  Hiroshi Oshikawa ,  Tetsuya Tamura ,  Hiroshi Uchida

IPC分类号： H04N5/91 ,  H04N5/00

CPC分类号： H04N9/8042 ,  G11B5/5547 ,  G11B21/083 ,  G11B27/105 ,  G11B2220/218 ,  G11B2220/2545 ,  G11B2220/2562 ,  H04N5/781

摘要： A head position estimator estimates the present position of a head relative to a recording medium, an LBA calculator for calculating positions of a data block to be read next and other data blocks existing before and after the data block, and a moving destination determiner for determining a data block at which the time required to move the head is the shortest, as a data block to be read next, on the basis of the present position of the head, which has been estimated by the head position estimator, and the positions of the respective data blocks, which have been calculated by the LBA calculator.

摘要翻译： 头位置估计器估计头相对于记录介质的当前位置，用于计算下一个要读取的数据块的位置的LBA计算器以及数据块之前和之后存在的其他数据块，以及用于确定的移动目的地确定器 基于由头部位置估计器估计的头部的当前位置，移动头部所需的时间最短的数据块作为接下来要读取的数据块，并且位置 已经由LBA计算器计算的各个数据块。

公开(公告)号：US20050141130A1

公开(公告)日：2005-06-30

申请号：US11012460

申请日：2004-12-14

申请人： Tetsuya Tamura ,  Semba Tetsuo ,  Hiroshi Uchida

发明人： Tetsuya Tamura ,  Semba Tetsuo ,  Hiroshi Uchida

IPC分类号： G06F3/06 ,  G11B5/55 ,  G11B5/596 ,  G11B20/10 ,  G11B20/12 ,  G11B21/02 ,  G11B27/10 ,  H04N5/85

CPC分类号： G11B5/5547

摘要： In conventional magnetic disk drives where stream data are treated, seek operations are performed at unnecessarily high speeds. This put the magnetic disk drives at a disadvantage in suppressing noise, reducing power consumption, and lowering the costs of actuator components. In one embodiment of the invention, a magnetic disk drive comprises a magnetic disk medium; a magnetic head; a head actuator to move the magnetic head relative to the magnetic disk medium; and a controller configured to control the head actuator to move the magnetic head to record data to and reproduce data from the magnetic disk medium. The controller is configured to control the magnetic head to record stream data on the magnetic disk medium in such a manner that the stream data is recognizable as stream data. The controller is configured to detect a situation in which two or more stream data are to be recorded or reproduced concurrently so as to set a slower seek operation mode.

摘要翻译： 在处理流数据的常规磁盘驱动器中，以不必要的高速执行查找操作。 这使得磁盘驱动器处于抑制噪声，降低功耗和降低致动器部件成本的缺点。 在本发明的一个实施例中，磁盘驱动器包括磁盘介质; 磁头; 头致动器，用于相对于磁盘介质移动磁头; 以及控制器，被配置为控制头致动器以移动磁头以将数据记录到磁盘介质并从其再现数据。 控制器被配置为控制磁头以将流数据识别为流数据的方式在磁盘介质上记录流数据。 控制器被配置为检测要同时记录或再现两个或多个流数据以便设置较慢的寻道操作模式的情况。

公开(公告)号：US09535169B2

公开(公告)日：2017-01-03

申请号：US13977840

申请日：2011-11-25

申请人： Hiroshi Uchida

发明人： Hiroshi Uchida

IPC分类号： G01T1/20 ,  G01T1/164 ,  G01T1/29

CPC分类号： G01T1/2006 ,  G01T1/1644 ,  G01T1/2985

摘要： Provided is a radiation detector that prevents a decline in detection efficiency as well as having excellent temporal characteristics. The radiation detector 1, which detects a radiation, includes a scintillator array 10 having a plurality of scintillator cells 11, a photodetector array 20 having a plurality of photodetectors 21, and a photodetector array 30 having a plurality of photodetectors 31. The plurality of photodetectors 21 and the plurality of photodetectors 31 are solid-state photodetectors that can transmit a gamma ray G1, G2. The scintillator cell 11 is separated into a plurality of light emitting regions 11a, 11b by a reflecting region 12, and the reflecting region 12 extends between the incident surface 10a side and the back surface 10b side along a surface SP that is inclined with respect to the incident surface 10a and the back surface 10b.

摘要翻译： 提供了防止检测效率下降以及具有优异的时间特性的辐射检测器。 检测辐射的辐射检测器1包括具有多个闪烁体单元11的闪烁体阵列10，具有多个光电检测器21的光电检测器阵列20和具有多个光电检测器31的光电检测器阵列30.多个光电检测器 21，多个光检测器31是能够透射伽马射线G1，G2的固体光电检测器。 闪烁体单元11通过反射区域12分离成多个发光区域11a，11b，反射区域12沿着相对于第二区域的倾斜的表面SP在入射面10a侧和背面10b侧之间延伸 入射面10a和背面10b。