公开(公告)号：US07365927B2

公开(公告)日：2008-04-29

申请号：US10784666

申请日：2004-02-23

申请人： Kohei Takamatsu ,  Yoshiyuki Kagami ,  Shuichi Hashimoto

发明人： Kohei Takamatsu ,  Yoshiyuki Kagami ,  Shuichi Hashimoto

IPC分类号： G11B5/09

CPC分类号： G11B5/10 ,  G11B5/00813 ,  G11B5/02 ,  G11B5/024 ,  G11B5/4893 ,  G11B5/59627 ,  G11B2005/001

摘要： An eccentricity correction data recording method, a disk-shaped recording medium, a head position control method and an information recording and reproducing apparatus are disclosed for effective eccentricity correction on cylinders of a disk-shaped recording medium. The eccentricity correction data recording method is for position control over a recording and reproducing head on a disk-shaped recording medium having at least one user data recording area to record user data, the method including the step of recording the eccentricity correction data in a user data recording area.

摘要翻译： 公开了一种偏心校正数据记录方法，盘形记录介质，磁头位置控制方法和信息记录和再现装置，用于在盘形记录介质的气缸上进行有效的偏心校正。 偏心校正数据记录方法是用于在具有至少一个用户数据记录区域的盘形记录介质上对记录和再现头进行位置控制以记录用户数据，该方法包括在用户中记录偏心校正数据的步骤 数据记录区。

公开(公告)号：US07164261B2

公开(公告)日：2007-01-16

申请号：US10824896

申请日：2004-04-15

申请人： Shuichi Hashimoto ,  Ryuki Kubohara ,  Tatsuhiko Kosugi ,  Takeyori Hara ,  Yoshiyuki Kagami

发明人： Shuichi Hashimoto ,  Ryuki Kubohara ,  Tatsuhiko Kosugi ,  Takeyori Hara ,  Yoshiyuki Kagami

IPC分类号： G01R23/167 ,  G01R23/00

CPC分类号： G11B21/10

摘要： A resonance-frequency measuring method is used for measuring a resonance frequency of an information recording/reproducing device reproducing information recorded on a medium by driving a mechanism unit. The resonance-frequency measuring method includes the measuring step of applying sine-wave oscillations at different frequencies one by one to the mechanism unit, and counting the number of times information reproduced upon application of each of the sine-wave oscillations differs from information indicating an aimed location, and the resonance-frequency determining step of determining the resonance frequency according to the number of times counted in the measuring step.

摘要翻译： 谐振频率测量方法用于通过驱动机构单元来测量记录在介质上的信息记录/再现装置再现信息的共振频率。 谐振频率测量方法包括测量步骤，将不同频率的正弦波振荡逐个地施加到机构单元，并且对施加每个正弦波振荡时再现的信息的计数不同于指示 以及谐振频率确定步骤，用于根据在测量步骤中计数的次数来确定谐振频率。

公开(公告)号：US20050041322A1

公开(公告)日：2005-02-24

申请号：US10920746

申请日：2004-08-18

申请人： Yoshiyuki Kagami ,  Isamu Tomita ,  Shuichi Hashimoto

发明人： Yoshiyuki Kagami ,  Isamu Tomita ,  Shuichi Hashimoto

IPC分类号： G11B20/10 ,  G11B5/55 ,  G11B5/596 ,  G11B21/08 ,  G11B21/10 ,  G11B21/02

CPC分类号： G11B5/5547 ,  G11B5/59633 ,  G11B21/083

摘要： There is provided a head control method controlling move of a head on a discoidal recording medium including the steps of: partitioning the discoidal recording medium which has position information recorded thereon at radially equal spacing into a plurality of zones; and demodulating the position information using a coefficient set for each of the zones.

摘要翻译： 提供了一种控制盘在盘形记录介质上的头的移动的头控制方法，包括以下步骤：将其上记录有位置信息的盘状记录介质以径向相等的间隔划分成多个区; 以及使用针对每个区域设置的系数来解调位置信息。

公开(公告)号：US5995318A

公开(公告)日：1999-11-30

申请号：US821165

申请日：1997-03-20

申请人： Susumu Hasegawa ,  Yukihiro Uematsu ,  Keiji Aruga ,  Shuichi Hashimoto ,  Kazuhiko Takaishi

发明人： Susumu Hasegawa ,  Yukihiro Uematsu ,  Keiji Aruga ,  Shuichi Hashimoto ,  Kazuhiko Takaishi

IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B21/08 ,  G11B21/10

CPC分类号： G11B5/59627 ,  G11B21/085 ,  G11B5/5547

摘要： Disclosed is a head positioning control system for disk drives which enables fast access even when eccentricities of tracks defined with servo control information relative to the center of rotation are different among disks assembled after the servo control information is externally written on the respective disks. The head positioning control system is adapted to a disk drive comprising a plurality of disks each having a record surface on which servo control information indicating positions in a radial direction on a disk is recorded, and heads associated with the plurality of disk record surfaces and designed to detect information stored on the plurality of disk record surfaces. The servo control information includes position information in the radial direction on each disk record surface and defines servo-control circular trajectories. In addition to known components, the head positioning control system includes an eccentric information memory for storing eccentric information concerning eccentricities of servo-control circular trajectories on disk record surfaces relative to the center of rotation, and an optimal processing unit that when object disk record surfaces are changed according to an instructed target address, executes processing, which requires the shortest time for accessing a target address, on the basis of eccentric information.

摘要翻译： 公开了一种用于盘驱动器的头定位控制系统，即使在伺服控制信息被外部写在各个盘上之后组装的盘之间，即使在由相对于旋转中心的伺服控制信息定义的轨道的偏心量不同的情况下也能够快速进入。 磁头定位控制系统适用于磁盘驱动器，磁盘驱动器包括多个磁盘，每个磁盘具有记录表面，伺服控制信息指示在盘上的径向方向上的位置，并且与多个磁盘记录表面相关联的磁头被设计 以检测存储在多个盘记录表面上的信息。 伺服控制信息包括每个磁盘记录表面上的径向位置信息，并且定义伺服控制圆形轨迹。 除了已知的部件之外，头部定位控制系统还包括偏心信息存储器，用于存储与磁盘记录表面相对于旋转中心的伺服控制圆形轨迹偏心的偏心信息，以及最佳处理单元，当对象盘记录表面 根据指示的目标地址而改变，基于偏心信息执行需要最短时间访问目标地址的处理。

公开(公告)号：US5903404A

公开(公告)日：1999-05-11

申请号：US753444

申请日：1996-11-25

申请人： Hiroshi Tsurumi ,  Shuichi Hashimoto

发明人： Hiroshi Tsurumi ,  Shuichi Hashimoto

IPC分类号： G11B5/012 ,  G11B5/39 ,  G11B5/48 ,  G11B5/55 ,  G11B5/596 ,  G11B20/12 ,  G11B20/18 ,  G11B21/08 ,  G11B21/10 ,  G11B27/28 ,  G11B27/30 ,  B07B1/28

CPC分类号： G11B20/10055 ,  G11B20/1258 ,  G11B27/3027 ,  G11B5/012 ,  G11B5/09 ,  G11B5/5526 ,  G11B5/59655 ,  G11B20/1866 ,  G11B2020/1234

摘要： A high-density disk unit and disk medium are disclosed. Track ID information is not placed in a servo area, or if some track ID information is placed therein, a necessary minimum is placed. The servo area is thus reduced in order to improve formatting efficiency.A data side of a disk medium is divided into a servo area and a data area in units of a sector. A track ID area in which track information is recorded is defined at the start position of the data area immediately following the servo area. A formatter circuit allows a write data modulation circuit to write track information in the track ID area during track formatting. For writing in the data area, the formatter circuit allows a read data demodulation circuit to read data from the track ID area. Track information is thus detected, and writing tracking is assured.

摘要翻译： 公开了一种高密度盘单元和盘介质。 轨道ID信息不被放置在伺服区域中，或者如果放置了一些轨迹ID信息，则放置必要的最小值。 因此减小伺服区域以提高格式化效率。 磁盘介质的数据侧以扇区为单位划分为伺服区域和数据区域。 记录跟踪信息的轨道ID区域被定义在跟随伺服区域的数据区域的起始位置。 格式化电路允许写入数据调制电路在轨道格式化期间在轨道ID区域中写入轨道信息。 为了在数据区域中写入，格式器电路允许读取数据解调电路从轨道ID区域读取数据。 因此检测到跟踪信息，并且确保写入跟踪。

公开(公告)号：US5831787A

公开(公告)日：1998-11-03

申请号：US714408

申请日：1996-09-13

申请人： Susumu Yoshida ,  Shuichi Hashimoto

发明人： Susumu Yoshida ,  Shuichi Hashimoto

IPC分类号： G11B21/10

CPC分类号： G11B5/5547

摘要： A method of demodulating head position in a disk apparatus in which a head is moved toward a target cylinder using a position detection signal that has been recorded on a disk medium. This method includes the steps of: predicting, at a current sampling point, the position of the head at the next sampling point; moving the head by instructing a current for a motor based upon the predicted position; obtaining a position deviation which indicates deviation from the predicted position to the head position at the next sampling point by reading the position detection signal that has been recorded on the disk medium; demodulating the head position at the next sampling point using the position deviation signal and the predicted position; predicting position of the head at an immediately following sampling point using a value obtained by outputting the difference (traveling velocity) between predicted positions at neighboring sampling points via a first-order low-pass filter, the predicted position, a difference between the predicted position and the head position and the value of the current instructed for the motor, and instructing a current for the motor based upon the predicted position.

摘要翻译： 使用已经记录在盘介质上的位置检测信号来解调头部朝向目标柱体移动的盘装置中的头部位置的方法。 该方法包括以下步骤：在当前采样点预测头在下一采样点的位置; 通过基于预测位置指示电动机的电流来移动头部; 通过读取已经记录在盘介质上的位置检测信号来获得指示在下一个采样点处从预测位置偏移到头部位置的位置偏差; 使用位置偏差信号和预测位置解调在下一个采样点处的头部位置; 使用通过经由一次低通滤波器输出相邻采样点的预测位置之间的差（行进速度）而获得的值，预测位于紧随其后采样点的头的位置，预测位置，预测位置 以及针对电动机指示的电流的位置和电流的值，并且基于预测位置来指示电动机的电流。

公开(公告)号：US5625505A

公开(公告)日：1997-04-29

申请号：US379866

申请日：1995-01-27

申请人： Hideki Ohmori ,  Shuichi Hashimoto

发明人： Hideki Ohmori ,  Shuichi Hashimoto

IPC分类号： G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  H03H15/00 ,  H03H17/00 ,  H03H21/00 ,  H03M13/23 ,  H04B3/04 ,  H04L25/497 ,  G11B5/09 ,  G11B5/035

CPC分类号： G11B20/10009 ,  G11B20/1813 ,  G11B2020/10916

摘要： Disclosed are a partial-response record signal regenerating method of and an apparatus for regenerating a record signal of a data area which is read from a storage disc by use of an equalizing circuit after training a circuit constant of said equalizing circuit with a training signal of the record signal read from the storage disc. The record signal regenerating method comprises: a Viterbi decode step of Viterbi-decoding an output into which the record signal is equalized by the equalizing circuit; a decode step of converting an m-bit output which is Viterbi-decoded into n-bits (m>n); and a synchronism detecting step of detecting the training signal from the m-bit output which is Viterbi-decoded and indicating a start of decoding the record signal of the data area. The record signal regenerating apparatus comprises: an equalizing circuit for equalizing the record signal by use of its circuit constant trained by a training signal recorded in front of a data area on the storage disc; a Viterbi decode circuit for Viterbi-decoding an output of the equalizing circuit; a decoder for converting an m-bit output which is Viterbi-decoded into n-bits (m>n); and a synchronism detecting circuit for indicating a start of decoding of the decoder by detecting the training signal from the Viterbi-decoded m-bit output.

摘要翻译： 本发明公开了一种部分响应记录信号再生方法及其再生装置，用于通过使用均衡电路在从存储盘读出的记录信号的再生信号之后，使用均衡电路在训练了所述均衡电路的电路常数之后， 记录信号从存储盘读取。 记录信号再生方法包括：维特比解码步骤，通过均衡电路对记录信号进行均衡的输出进行维特比解码; 将维特比解码的m位输出转换成n位（m> n）的解码步骤; 以及同步检测步骤，检测来自维特比解码的m位输出的训练信号，并指示开始对数据区的记录信号进行解码。 记录信号再现装置包括：均衡电路，用于通过使用由记录在存储盘上的数据区前面的训练信号训练的其电路常数对记录信号进行均衡; 维特比解码电路，用于对均衡电路的输出进行维特比解码; 用于将维特比解码的m位输出转换成n位（m> n）的解码器; 以及同步检测电路，用于通过检测来自维特比解码的m位输出的训练信号来指示解码器的开始开始。

公开(公告)号：US5204932A

公开(公告)日：1993-04-20

申请号：US460651

申请日：1990-01-03

申请人： Tohru Shinohara ,  Shuichi Hashimoto

发明人： Tohru Shinohara ,  Shuichi Hashimoto

IPC分类号： G11B5/55 ,  G11B21/08

CPC分类号： G11B21/085 ,  G11B5/5547

摘要： A servo circuit for a magnetic disk apparatus includes a target speed generating circuit which generates a target speed in accordance with an amount of movement. A speed signal producing circuit produces a real speed from a position signal from a servo object. A speed error generating circuit controls the speed of the servo object based on an error between the target speed and the real speed. Acceleration and deceleration control are performed to position the servo object at the target position. An acceleration detection circuit detects acceleration and outputs an acceleration-in-progress detection signal for changing a cut-off frequency of the speed error generating circuit between acceleration and deceleration. The servo circuit has a servo loop which supplies a seek current based on an error signal between a target speed and real speed to a voice coil motor and performs speed control on a head carriage. An addition circuit adds a predetermined addition value to the error signal during acceleration after the speed control starts. An amplifier determines the frequency characteristics of the servo loop. A gain switching circuit switches a preset gain to a larger gain between the start of a seek operation and the completion of acceleration. A speed signal generating circuit generates the real speed of the servo object based on a position signal of the servo object. A band changing circuit changes the band of a speed signal producing circuit in accordance with a seek difference.

摘要翻译： 用于磁盘装置的伺服电路包括目标速度产生电路，其根据移动量产生目标速度。 速度信号产生电路根据来自伺服对象的位置信号产生实际速度。 速度误差发生电路根据目标速度和实际速度之间的误差来控制伺服对象的速度。 执行加速和减速控制以将伺服对象定位在目标位置。 加速度检测电路检测加速度并输出用于改变加速和减速之间的速度误差产生电路的截止频率的加速进行中检测信号。 伺服电路具有伺服回路，其基于目标速度和实际速度之间的误差信号向音圈马达提供寻道电流，并对头托架进行速度控制。 加法电路在速度控制开始后的加速期间向误差信号添加预定的相加值。 放大器确定伺服环路的频率特性。 增益切换电路在寻找操作开始和加速完成之间将预设增益切换到更大的增益。 速度信号发生电路根据伺服对象的位置信号产生伺服对象的实际速度。 频带改变电路根据寻道差改变速度信号产生电路的频带。

公开(公告)号：US5194788A

公开(公告)日：1993-03-16

申请号：US460525

申请日：1990-01-03

申请人： Shuichi Hashimoto

发明人： Shuichi Hashimoto

IPC分类号： G05D3/12 ,  G11B5/55 ,  G11B21/08 ,  H02P25/06

CPC分类号： G11B5/5547 ,  G11B21/085

摘要： A servo circuit having a speed detection circuit for detecting a real speed from a position signal from an object under servo control. A speed error detection circuit generates an error between a target speed and the real speed. A position error detection circuit generates a position error signal from the position signal. A switching unit switches connection of the servo object to the speed error detection circuit and the position error detection circuit. A main processing unit controls the switching of the switching unit. Near the target position, speed control by the speed error detection circuit is switched to position control by the position error detection circuit. A speed detection gain adjustment unit is provided in the speed detection circuit. The main processing unit measures the intervals between the position signals and, based on the measured value, changes the detection gain of the speed detection gain adjustment unit.

摘要翻译： 一种伺服电路，具有速度检测电路，用于根据伺服控制下的物体的位置信号检测实际速度。 速度误差检测电路产生目标速度与实际速度之间的误差。 位置误差检测电路根据位置信号产生位置误差信号。 切换单元切换伺服对象与速度误差检测电路和位置误差检测电路的连接。 主处理单元控制切换单元的切换。 在目标位置附近，速度误差检测电路的速度控制由位置误差检测电路切换到位置控制。 速度检测增益调整单元设置在速度检测电路中。 主处理单元测量位置信号之间的间隔，并且基于测量值改变速度检测增益调节单元的检测增益。

公开(公告)号：US5095598A

公开(公告)日：1992-03-17

申请号：US504902

申请日：1990-04-04

申请人： Kojima Hiroshi ,  Keikichi Sakata ,  Seigo Watanabe ,  Yukio Mitsukuchi ,  Shuichi Hashimoto ,  Choji Kato ,  Mikiro Teshigawara ,  Ryoichi Furuhashi ,  Shoji Momoi ,  Toshihiko Inoue ,  Kazuki Uemura ,  Katsushi Oshima

发明人： Kojima Hiroshi ,  Keikichi Sakata ,  Seigo Watanabe ,  Yukio Mitsukuchi ,  Shuichi Hashimoto ,  Choji Kato ,  Mikiro Teshigawara ,  Ryoichi Furuhashi ,  Shoji Momoi ,  Toshihiko Inoue ,  Kazuki Uemura ,  Katsushi Oshima

IPC分类号： B23B3/06 ,  B23B3/16 ,  B23B3/30 ,  B23Q1/01 ,  B23Q7/04 ,  B23Q39/04 ,  G05B19/18

CPC分类号： B23Q39/048 ,  B23B3/06 ,  B23B3/167 ,  B23B3/30 ,  B23Q1/01 ,  B23Q7/04 ,  G05B19/182 ,  G05B2219/31407 ,  G05B2219/33263 ,  G05B2219/36338 ,  G05B2219/42104 ,  G05B2219/45125 ,  G05B2219/49143 ,  G05B2219/50001 ,  G05B2219/50003 ,  G05B2219/50004 ,  G05B2219/50219 ,  G05B2219/50235 ,  G05B2219/50382 ,  G05B2219/50387 ,  Y10T29/5109 ,  Y10T29/5114 ,  Y10T82/2504 ,  Y10T82/2524 ,  Y10T82/2587

摘要： A complex machine tool has a single frame having a chip, collecting space at a center portion thereof, first and second spindle stocks on the frame, relatively free to move and drive in a Z axis direction and holding the chip collecting space therebetween, workpiece spindles on the spindle stocks free to rotate and drive and facing each other, and tool rests. The tool rests have turrets and can assume various kinds of movement. Complicated and varied types of machining can be performed combining the rotation control of the workpiece spindles and the spindle stocks.

摘要翻译： 复合机床具有单个框架，其具有芯片，其中心部分处的收集空间，框架上的第一和第二主轴库存，相对自由地沿Z轴方向移动和驱动，并在其间保持芯片收集空间，工件主轴 主轴库存自由旋转和驱动并相互面对，并且刀具支架。 刀具具有炮塔，可以承担各种运动。 可以结合工件主轴的旋转控制和主轴库存进行复杂多样的加工。