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1. 发明授权

US06774615B2 Resonance-frequency measuring method determining a resonance frequency by counting the number of off-track occurrences 失效
标题翻译：谐振频率测量方法通过对偏离轨迹发生次数进行计数来确定谐振频率
公开(公告)号：US06774615B2
公开(公告)日：2004-08-10
申请号：US10056865
申请日：2002-01-25
申请人： Susumu Yoshida , Shuichi Hashimoto , Ryuki Kubohara , Tatsuhiko Kosugi , Takeyori Hara , Yoshiyuki Kagami
发明人： Susumu Yoshida , Shuichi Hashimoto , Ryuki Kubohara , Tatsuhiko Kosugi , Takeyori Hara , Yoshiyuki Kagami
IPC分类号： G06M110
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 comprises 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，并且计数在应用每个正弦波振荡时再现的信息的数量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。

2. 发明授权

US5831787A Head position demodulating method 失效
标题翻译：头位解调方式
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。

3. 发明授权

US07002769B2 Head control method and recording apparatus 有权
标题翻译：头控制方法和记录装置
公开(公告)号：US07002769B2
公开(公告)日：2006-02-21
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： G11B5/596 , 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。

4. 发明授权

US5173647A Servo positioning circuit 失效
标题翻译：伺服定位电路
公开(公告)号：US5173647A
公开(公告)日：1992-12-22
申请号：US460519
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 positioning circuit having a speed detection circuit for detecting a real speed from a position signal from a servo object; a speed error detection circuit for generating an error between a target speed and the real speed; a position error detection circuit for generating a position error signal from the position signal; a switching unit for switching connection of the servo object to the speed error detection circuit or the position error detection circuit; and a main processing unit for generating a target speed in accordance with the position signal and controlling the switching of the switching unit. When the servo object nears a target position, speed control by the speed error detection circuit switches to position control by the position error detection circuit. Further, a speed detection gain adjustment unit is included in the speed detection circuit, and the main processing unit changes the speed detection gain of an speed detection gain adjustment unit in accordance with the amount of difference.

5. 发明授权

US5097575A Complex machining machine tool 失效
标题翻译：复杂加工机床
公开(公告)号：US5097575A
公开(公告)日：1992-03-24
申请号：US491850
申请日：1990-03-12
申请人： Yukio Mitsukuchi , Shuichi Hashimoto , Shoji Momoi
发明人： Yukio Mitsukuchi , Shuichi Hashimoto , Shoji Momoi
IPC分类号： B23B3/06 , B23B3/16 , B23B3/30 , B23Q1/01 , B23Q7/04 , B23Q39/04 , G05B19/18 , B23B9/08
CPC分类号： G05B19/182 , B23B3/06 , B23B3/167 , B23B3/30 , B23Q1/01 , B23Q39/048 , B23Q7/04 , 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 , Y10T29/5114 , Y10T82/2502
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：复杂的机床具有在其中心部分具有芯片收集空间的单个框架，框架上的第一和第二主轴架，相对自由地沿Z轴方向移动和驱动，并且在其间保持芯片收集空间，工件主轴在主轴库存自由旋转并相互驱动并相互对置，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。

6. 发明授权

US5063454A Automatic adjustment method and system for servo motor circuit of a magnetic disk apparatus 失效
标题翻译：磁悬浮装置伺服电机电路的自动调整方法及系统
公开(公告)号：US5063454A
公开(公告)日：1991-11-05
申请号：US460657
申请日：1990-01-03
申请人： Shuichi Hashimoto
发明人： Shuichi Hashimoto
IPC分类号： G11B5/55 , G11B21/08
CPC分类号： G11B21/085 , G11B5/5547
摘要： An automatic adjustment system for a servo circuit of a magnetic disk apparatus having a magnetic head, a position signal preparing circuit, a speed control unit, and a position control unit. An automatic adjustment method includes monitoring a core width adjustment of the position signal while engaged in a uniform speed seek operation and adjusting a detection sensitivity of the position signal preparing circuit so that an angle of slope of the position signal becomes a predetermined value, measuring a forward/reverse seek operation time of the time between a forward seek operation and a reverse seek operation and adjusting a speed detecting offset of the speed control unit so that a difference between the forward seek operation time and the reverse seek operation time becomes minimal. A position control offset adjustment step is provided for measuring an integration value of the position signal during position control in a seek operation and adjusting the offset of the position control unit so that the integration value becomes minimal. The steps of counting a seek operation time and positioning adjustment of the seek operation time, adjusting a differentiation gain of the speed control unit so that the seek operation time becomes minimal, integrating the position signal, and adjusting a control current detection gain of the speed control unit so that the integration value becomes minimal, are also performed.

7. 发明申请

US20050057837A1 Eccentricity correction data recording method and recording medium having eccentricity correction data 失效
标题翻译：偏心校正数据记录方法和具有偏心校正数据的记录介质
公开(公告)号：US20050057837A1
公开(公告)日：2005-03-17
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： G11B21/10 , G11B5/00 , G11B5/008 , G11B5/02 , G11B5/024 , G11B5/10 , G11B5/48 , G11B5/596 , 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。

8. 发明授权

US5844744A Head positioning control apparatus of disk drive and method of controlling the same apparatus 失效
标题翻译：磁盘驱动器的头部定位控制装置和控制相同装置的方法
公开(公告)号：US5844744A
公开(公告)日：1998-12-01
申请号：US820637
申请日：1992-01-24
申请人： Nobuyuki Suzuki , Shuichi Hashimoto , Toshio Negoro
发明人： Nobuyuki Suzuki , Shuichi Hashimoto , Toshio Negoro
IPC分类号： G11B5/55 , G11B21/08 , G11B21/18
CPC分类号： G11B5/553 , G11B21/083 , G11B21/085 , G11B21/18
摘要： A head positioning apparatus and method for a disk drive system. During each computing time of a plurality of sequential computing times: (a) a position of a servo head on a disk is computed, (b) an actual position of the servo head in the present computing time is computed, based on the computed position of the servo head and an estimated position of the servo head computed in the preceding computing time, (c) a moving distance of the servo head is computed, based on the actual positions of the servo head computed in the present computing time and in the preceding computing time, (d) an estimated position of the servo head in the present computing time, indicating an estimated position reached by the servo head at the succeeding computing time, is computed from the actual position of the servo head computed in the present computing time to the moving distance of the servo head, (e) a moving velocity of the servo head is computed based on the actual position of the servo head computed in the present computing time and the actual position of the servo head computed in the preceding computing time, (f) a remaining number of tracks up to a target track is computed, based on the actual position of the servo head computed in the present computing time, and (g) an object velocity of the servo head is obtained, based on the remaining number of tracks.
摘要翻译： PCT No.PCT / JP91 / 00870 Sec。 371日期：1993年10月18日 102（e）日期1993年10月18日PCT提交1990年6月27日PCT公布。出版物WO92 / 11636 日本1992年7月9日磁头驱动系统的头部定位装置及方法。在多个顺序计算时间的每个计算时间期间：（a）计算一个伺服磁头在磁盘上的位置，（b）基于计算出的位置计算当前计算时间内的伺服磁头的实际位置伺服头的计算位置和前一计算时间中计算的伺服头的估计位置，（c）基于当前计算时间内计算出的伺服头的实际位置，计算伺服头的移动距离，（d）当前计算时间内的伺服头的估计位置，表示在随后的计算时刻由伺服头达到的估计位置，根据本计算中计算的伺服头的实际位置计算时间到伺服头的移动距离，（e）伺服头的移动速度是根据在当前计算时间内计算的伺服头的实际位置和伺服头的实际位置来计算的（f）基于在当前计算时间中计算的伺服头的实际位置，计算直到目标轨道的剩余轨道数，以及（g）目标轨迹的目标速度，基于剩余的轨道数获得伺服头。

9. 发明授权

US5523900A Head position detecting method and apparatus 失效
标题翻译：头位置检测方法和装置
公开(公告)号：US5523900A
公开(公告)日：1996-06-04
申请号：US194663
申请日：1994-02-08
申请人： Tatsuhiko Kosugi , Shuichi Hashimoto , Toru Shinohara
发明人： Tatsuhiko Kosugi , Shuichi Hashimoto , Toru Shinohara
IPC分类号： G11B19/28 , G11B5/596 , G11B20/14 , G11B20/18 , G11B21/10
CPC分类号： G11B21/106 , G11B5/59616
摘要： A head position detecting method and apparatus for detecting a phase difference from servo data on a recording medium to detect the position of a head. This head position detecting method and apparatus detect the phase differences between the read pulse of the servo data read by the head and reference clocks, and average the phase differences to detect the head position. A training area having a timing signal recorded therein is provided before the servo data on the recording medium. A phase-lock loop circuit for generating reference clocks is synchronized with the timing signal to accurately detect the phase differences. An integrator is used to average the phase differences. This design ensures accurate detection of the head position even under fast seek. Further, a phase difference signal around a target cylinder is obtained by selecting the phase of the reference clock in accordance with the position of the target cylinder.
摘要翻译：一种头位置检测方法和装置，用于检测与记录介质上的伺服数据的相位差以检测头的位置。这种头部位置检测方法和装置检测由头部和参考时钟读取的伺服数据的读取脉冲之间的相位差，并且平均相位差以检测头部位置。在记录介质上的伺服数据之前提供其中记录有定时信号的训练区域。用于产生参考时钟的锁相环电路与定时信号同步，以准确地检测相位差。积分器用于平均相位差。这种设计确保即使在快速寻找下也能准确检测头部位置。此外，通过根据目标气缸的位置选择参考时钟的相位来获得目标气缸周围的相位差信号。

10. 发明授权

US5311379A Method and system for positioning head on target cylinder of disk 失效
标题翻译：将磁头定位在磁盘目标磁盘上的方法和系统
公开(公告)号：US5311379A
公开(公告)日：1994-05-10
申请号：US766399
申请日：1991-09-27
申请人： Tohru Shinohara , Shuichi Hashimoto
发明人： Tohru Shinohara , Shuichi Hashimoto
IPC分类号： G11B21/10 , G11B5/55 , G11B5/596
CPC分类号： G11B5/5547
摘要： A method of positioning a magnetic head on a target cylinder of a magnetic disk uses a position signal derived from a servo signal which is read from a magnetic disk using a magnetic head. The servo signal includes at least first and second servo signal components on even cylinders of the magnetic disk and includes at least third and fourth servo signal components on odd cylinders of the magnetic disk. The position signal is used for moving the magnetic head to a desired cylinder. The method comprises the steps of obtaining a first position signal for positioning the magnetic head to an odd cylinder on the magnetic disk based on a difference between peak values of the first and second servo signal components, obtaining a second position signal for positioning the magnetic head to an even cylinder on the magnetic disk based on a difference between peak values of the third and fourth servo signal components, and using only one of the first and second position signals to position the magnetic head to the target cylinder depending on a cylinder address of the target cylinder.
摘要翻译：将磁头定位在磁盘的目标气缸上的方法使用从使用磁头从磁盘读取的伺服信号导出的位置信号。伺服信号在磁盘的偶数圆柱上至少包括第一和第二伺服信号分量，并且在磁盘的奇数圆柱上包括至少第三和第四伺服信号分量。位置信号用于将磁头移动到所需的气缸。该方法包括以下步骤：基于第一和第二伺服信号分量的峰值之间的差，获得用于将磁头定位到磁盘上的奇数圆柱的第一位置信号，获得用于定位磁头的第二位置信号基于第三和第四伺服信号分量的峰值之间的差异，并且仅使用第一和第二位置信号中的一个将磁头定位到目标圆柱体，根据圆柱体地址目标气缸。

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