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1. 发明专利

JP2013120608A Head tester and head testing method 审中-公开
标题翻译：头部测试和头部测试方法
公开(公告)号：JP2013120608A
公开(公告)日：2013-06-17
申请号：JP2011266508
申请日：2011-12-06
申请人： Hitachi High-Technologies Corp , 株式会社日立ハイテクノロジーズ
发明人： YAMAMOTO YUKIO , SAKURAI YOSHIHIRO
IPC分类号： G11B5/455 , G11B5/00 , G11B5/012
摘要： PROBLEM TO BE SOLVED: To discriminate a proper combination for a magnetic head among magnetic disks of a plurality of patterns.SOLUTION: A head tester 10 evaluates a magnetic head 60 for performing signal recording/reproduction to/from a BPM type disk 40 with a servo area pattern or a data area pattern formed. The head tester 10 includes a spindle 14, actuators 12 and 13 capable of moving the magnetic head 60, an evaluation section 25 for evaluating a magnetic recording characteristic of the magnetic head 60, a display section 26 for displaying the magnetic recording characteristic of the magnetic head 60, and a control section 24 for controlling the actuators 12 and 13, the evaluation section 25 and the display section 26. When the BPM type disk 40 is mounted onto the spindle 14, the control section 14 moves the magnetic head 60 to a prescribed test area included in any test zone to evaluate the magnetic recording characteristic of the magnetic head 60, makes the display section 26 display an evaluation result, and makes a storage section 30 store the evaluation result.
摘要翻译：要解决的问题：为了区分多个图案的磁盘中的磁头的适当组合。解决方案：磁头测试器10评估磁头60，用于执行具有伺服区域图案或形成的数据区域图案的来自BPM型磁盘40的信号记录/再现。头部测试器10包括主轴14，能够移动磁头60的致动器12和13，用于评估磁头60的磁记录特性的评估部分25，用于显示磁头60的磁记录特性的显示部分26 头60，以及用于控制致动器12和13，评估部分25和显示部分26的控制部分24.当BPM型盘40安装到主轴14上时，控制部分14将磁头60移动到包含在任何测试区域中的规定测试区域以评估磁头60的磁记录特性，使显示部分26显示评估结果，并使存储部分30存储评估结果。版权所有（C）2013，JPO＆INPIT

2. 发明专利

JP2009277313A Head position control method, head position control unit, and magnetic recording evaluation device 有权
标题翻译：头位置控制方法，头位置控制单元和磁记录评估装置
公开(公告)号：JP2009277313A
公开(公告)日：2009-11-26
申请号：JP2008129331
申请日：2008-05-16
申请人： Hitachi High-Technologies Corp , 株式会社日立ハイテクノロジーズ
发明人： YAMAMOTO YUKIO , SAKURAI YOSHIHIRO , HIGA KUNIHITO
IPC分类号： G11B21/10
CPC分类号： G11B19/048 , G11B5/455 , G11B5/5582 , G11B5/59627
摘要： PROBLEM TO BE SOLVED: To provide a head position control method which accurately detects eccentricity correction by simple processing and can control a magnetic head to follow the track of a DTM type disk.
SOLUTION: This magnetic recording evaluation device includes: a step for detecting by an angle detecting section 7 an angle θ1 at which relative displacement between the magnetic head 3 and a track 13 of the DTM type disk 1 reaches a peak without adding vibration data; a step for calculating by a vibration data calculating section 8 a first vibration data with which the angle θ2 is shifted from the θ1 by a predetermined value with an amplitude Pv1; a step for detecting by the angle detecting section 7 an angle θ3 with which the relative displacement reaches a peak by adding the first vibration data; a step for calculating by a correction data correcting section 9 correction data to the eccentricity of the track 13 from the detected angle θ1 and θ3, the vibration amplitude Pv1, and the angle θ2; and a step for correcting the magnetic head 3 position by the correction data.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种头位置控制方法，其通过简单的处理精确地检测偏心校正，并且可以控制磁头跟随DTM型盘的轨道。该磁记录评估装置包括：用角度检测部分7检测在磁头3和DTM型盘1的轨道13之间的相对位移达到峰值而不增加振动的角度θ1的步骤数据; 通过振动数据计算部8计算出角度θ2从θ1偏移了具有振幅Pv1的规定值的第一振动数据的步骤; 通过加上第一振动数据，由角度检测部7检测相对位移达到峰值的角度θ3的步骤; 通过校正数据校正部9根据检测角度θ1和θ3，振动振幅Pv1和角度θ2来校正轨迹13的偏心度的步骤; 以及通过校正数据校正磁头3位置的步骤。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2014123411A Magnetic disk inspection device and magnetic head inspection device 有权
标题翻译：磁性磁盘检查装置和磁头检测装置
公开(公告)号：JP2014123411A
公开(公告)日：2014-07-03
申请号：JP2012278485
申请日：2012-12-20
申请人： Hitachi High-Technologies Corp , 株式会社日立ハイテクノロジーズ
发明人： YAMAMOTO YUKIO , SUGIYAMA TOSHINORI , SAKURAI YOSHIHIRO
IPC分类号： G11B33/14 , G11B25/04
摘要： PROBLEM TO BE SOLVED: To provide magnetic disk and magnetic head inspection devices that prevent increase in test time and decrease in precision in positioning a magnetic head during test and that can cool a heat generating part.SOLUTION: A magnetic disk inspection device includes one or more cooling mechanisms 12-1 to 13-5 for cooling a heat generating part, a cooling mechanism control unit 14 for controlling operation of the cooling mechanisms individually, and a device control unit 11 for controlling operation of each part of the device. The device control unit individually determines operation states of the cooling mechanisms according to an operation condition of each part of the device and individually controls operation of the cooling mechanisms through the cooling mechanism control unit.
摘要翻译：要解决的问题：提供磁盘和磁头检查装置，其防止测试时间的增加和测试期间磁头定位的精度降低，并且可以冷却发热部件。解决方案：磁盘检查装置包括一个或用于冷却发热部件的更多的冷却机构12-1〜13-5，用于分别控制冷却机构的运转的冷却机构控制部14，以及用于控制装置的各部分的运转的装置控制部11。设备控制单元根据设备的每个部件的操作状态单独地确定冷却机构的操作状态，并通过冷却机构控制单元分别控制冷却机构的操作。

4. 发明专利

JP2010218675A Head positioning method for eccentric track and head positioning control device 有权
标题翻译：用于偏心跟踪和头部定位控制装置的头部定位方法
公开(公告)号：JP2010218675A
公开(公告)日：2010-09-30
申请号：JP2010031351
申请日：2010-02-16
申请人： Hitachi High-Technologies Corp , 株式会社日立ハイテクノロジーズ
发明人： HIGA KUNIHITO , SAKURAI YOSHIHIRO , YAMAMOTO YUKIO
IPC分类号： G11B21/10
CPC分类号： G11B5/59627
摘要： PROBLEM TO BE SOLVED: To perform head positioning for a target track that rotates eccentrically with a high degree of precision without making position correction for the rotation center of a disk for a spindle corresponding to track eccentricity beforehand.
SOLUTION: Drive waveforms with which extension and contraction characteristics of an actuator corresponding to a number of track eccentricity amounts are tabulated and stored as data. By reading servo information written in the disk, a head position detection signal is obtained as a signal indicating a head displacement amount from a track. An amplitude corresponding to a shift amount of the head position and a rotation angle of maximum eccentricity are obtained, and drive waveforms optimal in driving the actuator are read from the memory. Then, the head is moved in a direction in which the track is displaced by driving the actuator with a drive waveform matched with the rotation angle at which the eccentricity is maximum.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：对于预先对应于磁道偏心的用于主轴的盘的旋转中心进行位置校正，执行用于高精度地偏心旋转的目标轨道的头部定位。解决方案：将与多个磁道偏心量相对应的执行机构的延伸和收缩特性列入并作为数据存储的驱动波形。通过读取写在盘中的伺服信息，获得头部位置检测信号作为指示来自轨道的头部位移量的信号。获得对应于头位置的偏移量和最大偏心的旋转角度的幅度，并且从存储器读取驱动致动器最佳的驱动波形。然后，通过用与偏心率最大的旋转角匹配的驱动波形来驱动致动器，使磁头沿着轨道移位的方向移动。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2009266358A Method for measuring write width and/or read width of composite magnetic head and measuring device 有权
标题翻译：用于测量写入宽度和/或读取复合磁头和测量装置的宽度的方法
公开(公告)号：JP2009266358A
公开(公告)日：2009-11-12
申请号：JP2009056170
申请日：2009-03-10
申请人： Hitachi High-Technologies Corp , 株式会社日立ハイテクノロジーズ
发明人： MOCHIZUKI HIDEKI , SAKURAI YOSHIHIRO , SUZUKI TOSHIAKI , YAMAMOTO YUKIO
IPC分类号： G11B5/455 , G11B5/00 , G11B5/39 , G11B5/65
CPC分类号： G11B5/455 , G11B5/59627
摘要： PROBLEM TO BE SOLVED: To provide a method for measuring a write width/a read width of a composite magnetic head for easily measuring a write sensitive width of a write head and/or a read sensitive width of a read head by reading and writing data with respect to a DTM, etc., having a track width narrower than a write sensitive width of a write head and to provide a measuring device using the method.
SOLUTION: In the method for measuring a write width and/or a read width of a composite magnetic head, a read characteristics profile having a peak as a read voltage characteristics for a moving distance is obtained by writing a test data in a designated track of eccentric tracks of such as a DTM by the composite magnetic head (write head) in a prescribed track, reading the test data from the designated track by moving the composite magnetic head (read head) in a radial direction of a disk and crossing the designated track and a write sensitive width or a read sensitive width is calculated on the basis of the read characteristics profile.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于测量复合磁头的写入宽度/读取宽度的方法，用于通过读取来容易地测量读取头的写入敏感宽度和/或读取敏感宽度并且相对于DTM等写入具有比写入头的写入敏感宽度窄的轨道宽度的数据，并且使用该方法提供测量装置。解决方案：在用于测量复合磁头的写入宽度和/或读取宽度的方法中，具有作为移动距离的读取电压特性的峰值的读取特性曲线通过将测试数据写入到通过复合磁头（写入头）在规定的轨迹中指定诸如DTM的偏心轨道的轨迹，通过沿着盘的径向方向移动复合磁头（读取头）从指定轨道读取测试数据，以及基于读取特性曲线来计算穿过指定轨道并写入敏感宽度或读取敏感宽度。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2012212489A Inspection device for magnetic disk or magnetic head, and inspection method for the same 审中-公开
标题翻译：用于磁盘或磁头的检查装置及其检测方法
公开(公告)号：JP2012212489A
公开(公告)日：2012-11-01
申请号：JP2011076646
申请日：2011-03-30
申请人： Hitachi High-Technologies Corp , 株式会社日立ハイテクノロジーズ
发明人： SAKURAI YOSHIHIRO , HIGA KUNIHITO , YAMAMOTO YUKIO
IPC分类号： G11B21/10
CPC分类号： G11B5/59627 , G11B20/10222 , G11B2220/2516
摘要： PROBLEM TO BE SOLVED: To achieve reduction in erroneous demodulation of positional information and improvement in detection accuracy of a position signal, with respect to eccentricity of a magnetic disk, and enable quick eccentric-clock correction, with respect to an arbitrary frequency.SOLUTION: An inspection device for a magnetic disk or a magnetic head comprises: a servo demodulation part for demodulating servo information retrieved from a magnetic disk; a PLL clock generation part 19 for generating a reference clock 72 corresponding to a frequency of the servo information retrieved from the magnetic disk, and supplying the generated reference clock to the servo demodulation part; and a tester control part for controlling operation of the inspection device. The PLL clock generation part 19 includes an eccentricity correction circuit 19b for correcting a frequency of the reference clock in accordance with an eccentricity amount of the magnetic disk. The tester control part generates correction data 75 for correcting the frequency of the reference clock, multiplies the correction data by a reciprocal of a transfer function of the PLL clock generation part 19, and supplies the correction data after multiplication to the eccentricity correction circuit 19b.
摘要翻译：要解决的问题为了减少位置信息的错误解调和提高位置信号的检测精度，相对于磁盘的偏心度，并且能够进行快速偏心时钟校正，相对于任意频率。解决方案：用于磁盘或磁头的检查装置包括：伺服解调部分，用于解调从磁盘检索的伺服信息; PLL时钟产生部分19，用于产生对应于从磁盘检索的伺服信息的频率的参考时钟72，并将产生的参考时钟提供给伺服解调部分; 以及用于控制检查装置的操作的测试器控制部。 PLL时钟产生部分19包括用于根据磁盘的偏心量来校正参考时钟的频率的偏心校正电路19b。测试器控制部分产生用于校正参考时钟的频率的校正数据75，将校正数据乘以PLL时钟产生部分19的传递函数的倒数，并将校正数据乘以偏心校正电路19b之后提供。版权所有（C）2013，JPO＆INPIT

7. 发明专利

JP2009080923A Servo information writing method, and magnetic head tester and magnetic disk tester which use the method 有权
标题翻译：伺服信息写入方法和使用方法的磁头测试仪和磁盘测试仪
公开(公告)号：JP2009080923A
公开(公告)日：2009-04-16
申请号：JP2008224916
申请日：2008-09-02
申请人： Hitachi High-Technologies Corp , 株式会社日立ハイテクノロジーズ
发明人： SAKURAI YOSHIHIRO , OTANI HITOSHI , HIGA KUNIHITO , YAMAMOTO YUKIO
IPC分类号： G11B21/10 , G11B5/455 , G11B20/10 , G11B20/18
CPC分类号： G11B19/048 , G11B5/5552 , G11B5/59633 , G11B5/59666
摘要： PROBLEM TO BE SOLVED: To provide a servo information writing method which does not write servo information to a magnetic disk every time a magnetic head assembly is exchanged, and also provide a magnetic head tester or a magnetic disk tester which each use the method. SOLUTION: Mark information is recorded in an area which is on a circumference of a magnetic disk corresponding to a last track in which a servo information write is ended or a track, which is one or two in front of the last track in which servo information is not written and the mark information is detected by returning a magnetic head in a radial direction of the magnetic disk by a fine movement stage after the magnetic head is moved to a next aimed track by a coarse movement stage. The servo information write position is detected by the magnetic head and the servo information is written in a servo information write position of a next track by positioning the magnetic head therein by using the fine movement stage. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种在每次更换磁头组件时不向磁盘写入伺服信息的伺服信息写入方法，并且还提供磁头测试器或磁盘测试器，每个磁头测试器使用方法。解决方案：标记信息被记录在与伺服信息写入的最后一个轨道相对应的磁盘的圆周上的区域中，或者在最后一个轨道的前面一个或两个的轨道在通过粗动阶段将磁头移动到下一个目标轨道之后，通过微动载档在磁盘的径向方向上返回磁头来检测标记信息。通过磁头检测伺服信息写入位置，并且通过使用微动载台将磁头定位在其中，将伺服信息写入下一轨道的伺服信息写入位置。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2013114702A Magnetic head inspection device and magnetic head inspection method 审中-公开
标题翻译：磁头检测装置及磁头检测方法
公开(公告)号：JP2013114702A
公开(公告)日：2013-06-10
申请号：JP2011257630
申请日：2011-11-25
申请人： Hitachi High-Technologies Corp , 株式会社日立ハイテクノロジーズ
发明人： HIGA KUNIHITO , SAKURAI YOSHIHIRO , YAMAMOTO YUKIO
IPC分类号： G11B5/455 , G11B21/10
CPC分类号： G11B21/106 , G11B5/5552 , G11B5/5556 , G11B5/596
摘要： PROBLEM TO BE SOLVED: To achieve stable servo control by avoiding the influences of a thermal drift and thermal expansion in inspection of a magnetic head including a fine movement actuator.SOLUTION: A magnetic head inspection device 10 includes a fine movement stage 7 for positioning a magnetic head 4 at a desired position on a magnetic disk 1, a data processing circuit 15 for measuring a movement characteristic of a fine movement actuator, and a servo control circuit 11 for making the magnetic head 4 track a servo track on the magnetic disk 1 on the basis of a measurement result of the data processing circuit 15. When the amount of travel of the fine movement actuator exceeds an allowable range, the servo control circuit 11 drives the fine movement stage 7 to move the magnetic head 4 to control the amount of travel of the fine movement actuator so as to fall within the allowable range.
摘要翻译：要解决的问题：通过避免在包括精细运动致动器的磁头的检查中的热漂移和热膨胀的影响来实现稳定的伺服控制。解决方案：磁头检查装置10包括用于将磁头4定位在磁盘1上的期望位置的精细移动台7，用于测量精细运动致动器的运动特性的数据处理电路15，以及伺服控制电路11，用于根据数据处理电路15的测量结果使磁头4跟踪磁盘1上的伺服磁道。当微动作致动器的移动量超过允许范围时，伺服控制电路11驱动微动载物台7使磁头4移动，以控制精细运动致动器的行进量，使其落入容许范围内。版权所有（C）2013，JPO＆INPIT

9. 发明专利

JP2011090728A Head position control device, magnetic recording evaluation device, and head position control method 有权
标题翻译：头位置控制装置，磁记录评估装置和头位置控制方法
公开(公告)号：JP2011090728A
公开(公告)日：2011-05-06
申请号：JP2009242094
申请日：2009-10-21
申请人： Hitachi High-Technologies Corp , 株式会社日立ハイテクノロジーズ
发明人： YAMAMOTO YUKIO , MATSUDA YASUHIRO , SUGIYAMA TOSHINORI , SAKURAI YOSHIHIRO , HIGA KUNIHITO
IPC分类号： G11B21/10
CPC分类号： G11B5/59627
摘要： PROBLEM TO BE SOLVED: To provide a magnetic head position control device which controls a magnetic head to follow on track with a high degree of accuracy by avoiding an influence of characteristics fluctuation of a piezo-actuator by heat generation, and making a stable feed forward control. SOLUTION: In a start point of feed forward control learning, a rotation synchronous positioning error is detected by a rotation synchronous positioning error operation part 9-1 in a state where servo driving is not carried out, and a driving pattern and driving period for idling are determined by a feedforward data operation part 9-2 based on the value of the rotation synchronous positioning error. The driving pattern is stored in a feedforward data memory 9-3, and idling of a micro motion actuator 5 is performed by outputting the driving pattern as feedforward data in synchronization with rotation of a spindle. Control start sequence is resumed after idling end, and feed forward control learning is implemented. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种磁头位置控制装置，其通过避免压电致动器的发热的特性波动的影响来以高精度控制磁头跟随轨迹，并且使稳定的前馈控制。解决方案：在前馈控制学习的起始点，在不进行伺服驱动的状态下，由旋转同步定位误差运算部9-1检测旋转同步定位误差，驱动模式和驱动基于旋转同步定位误差的值，由前馈数据运算部9-2决定空转时间。驱动模式存储在前馈数据存储器9-3中，通过与主轴的旋转同步地输出作为前馈数据的驱动模式来执行微动作致动器5的空转。空转结束后恢复控制启动顺序，实现前馈控制学习。版权所有（C）2011，JPO＆INPIT

10. 发明专利

JP2010080017A Magnetic head positioning controller, magnetic head inspection device, and magnetic disk inspection device 有权
标题翻译：磁头定位控制器，磁头检测装置及磁盘检测装置
公开(公告)号：JP2010080017A
公开(公告)日：2010-04-08
申请号：JP2008249462
申请日：2008-09-29
申请人： Hitachi High-Technologies Corp , 株式会社日立ハイテクノロジーズ
发明人： NAKAMURA SHIGEO , SUDO KIMIHIKO , SUGIYAMA TOSHINORI , MATSUDA YASUHIRO , YAMAMOTO YUKIO , SAKURAI YOSHIHIRO
IPC分类号： G11B21/10 , G11B5/455
CPC分类号： G11B19/048 , G11B5/455 , G11B5/4555 , G11B5/5552 , G11B5/59627
摘要： PROBLEM TO BE SOLVED: To provide a magnetic head positioning controller for highly precisely inspecting a magnetic disk, in which tracks are previously written.
SOLUTION: In the magnetic head positioning controller including two slight movement actuators, a second slight movement actuator to which a magnetic head is attached is provided on a first slight movement actuator, a stroke of the second slight movement actuator is greater than that of the first slight movement actuator and eccentricity of the tracks of the magnetic disk is made to be followed by the second slight movement actuator. Positioning precision can be enhanced.
COPYRIGHT: (C)2010,JPO&INPIT

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