专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US07457075B2 System and method for reducing ZAP time and track squeeze in a data storage device 有权
标题翻译：用于减少ZAP时间并跟踪数据存储设备中的挤压的系统和方法
公开(公告)号：US07457075B2
公开(公告)日：2008-11-25
申请号：US10785628
申请日：2004-02-24
申请人： Xiong Liu , Qiang Bi , TzeMing Jimmy Pang , ChoonKiat Lim
发明人： Xiong Liu , Qiang Bi , TzeMing Jimmy Pang , ChoonKiat Lim
IPC分类号： G11B5/596
CPC分类号： G11B5/59605 , G11B19/045
摘要： A method and apparatus for compensating for errors in servo systems. An improved zero acceleration path (ZAP) correction technique is provided, wherein selected tracks of a data storage device are used for ZAP processing in order to reduce the overall time required to perform error compensation for a storage device. For a given selected track to be ZAPed, track profiles of adjoining tracks are used in addition to the track profile of the selected track as part of the ZAP correction determination for the selected track. Using adjacent track profiles as part of the ZAP correction determination assists in mitigating AC track squeeze issues that would otherwise occur when performing selective track ZAPing.
摘要翻译：一种补偿伺服系统误差的方法和装置。提供了一种改进的零加速路径（ZAP）校正技术，其中数据存储设备的选定轨道用于ZAP处理，以便减少对存储设备进行错误补偿所需的总体时间。对于给定的所选轨道要ZAPed，除了所选轨道的轨道轮廓之外，还使用相邻轨道的轨道轮廓，作为所选轨道的ZAP校正确定的一部分。使用相邻轨道配置文件作为ZAP校正确定的一部分有助于减轻执行选择性跟踪ZAPing时会发生的AC轨道挤压问题。

12. 发明授权

US07423825B2 Disk unit and manufacturing method thereof 失效
标题翻译：磁盘单元及其制造方法
公开(公告)号：US07423825B2
公开(公告)日：2008-09-09
申请号：US11172199
申请日：2005-06-29
申请人： Naoki Shimamura , Osama Takazawa , Kaoru Umemura , Kazuhiko Washizu
发明人： Naoki Shimamura , Osama Takazawa , Kaoru Umemura , Kazuhiko Washizu
IPC分类号： G11B27/36
CPC分类号： G11B5/59605 , G11B5/56 , G11B27/36 , G11B2220/20
摘要： A disk unit is capable of detecting a track, the track width of which deviates from a normal value, with high accuracy at high speed. A HDD includes a read head, a disk and defective-track detecting part. The disk has servo data including bursts A, B written thereon. The servo data is used to position the read head to a track center. The defective-track detecting part detects a defective track as below. The sum of the amplitude of bursts A and B, which have been read by the read head by one read operation, is divided by the amplitude of a burst C or D to obtain a compared value. If the compared value deviates from a criterion by a specified percentage or more, it is judged that the track width of a track is abnormal. Since bursts A through D are written without trimming, the size of bursts A through D in the track width direction are kept constant regardless of the track width. Accordingly, a gap G fluctuating in accordance with the track width is formed in the radial direction between bursts A and B. Bursts A and B are read at a position including gap G, and the above-mentioned compared value is determined, and thereby a defective track is detected.
摘要翻译：磁盘单元能够以高速度高精度地检测轨道宽度偏离正常值的轨道。 HDD包括读取头，盘和缺陷轨迹检测部。磁盘具有写入其上的脉冲串A，B的伺服数据。伺服数据用于将读取头定位到轨道中心。缺陷轨迹检测部分检测如下的缺陷轨迹。由读取头通过一次读取操作读取的脉冲串A和B的幅度之和除以突发C或D的幅度以获得比较值。如果比较值与标准偏差达指定百分比以上，则判断轨道的轨迹宽度异常。由于脉冲串A至D在不进行调整的情况下被写入，所以在轨道宽度方向上的脉冲串A至D的大小与轨道宽度无关。因此，在突发A和B之间沿径向方向形成根据磁道宽度波动的间隙G.在包括间隙G的位置处读取突发A和B，并且确定上述比较值，由此检测到有缺陷的轨迹。

13. 再颁专利

USRE40413E1 Method and apparatus for developing a dynamic servo signal from data 有权
标题翻译：用于从数据开发动态伺服信号的方法和装置
公开(公告)号：USRE40413E1
公开(公告)日：2008-07-01
申请号：US11067616
申请日：2005-02-25
申请人： Alvin M. Despain , R. Stockton Gaines
发明人： Alvin M. Despain , R. Stockton Gaines
IPC分类号： G11B5/596 , G11B5/09
CPC分类号： G11B5/5534 , G11B5/59605 , G11B5/59683 , G11B19/04 , G11B20/18 , G11B27/36
摘要： Apparatus using information about the extent of errors in sensed data for performing as a control function at least one of adjusting the position of a magnetic head to improve alignment relative to a track and selecting from two or more data signals a data signal having the least amount of errors is shown. The apparatus uses information about the extent of errors to perform a control function for reproducing the data stored in predetermined storage locations in a storage media. The apparatus positions a transducer for sensing from predetermined storage locations stored data containing at least one constraint. The transducer generates a first signal representative of the data containing at least one constraint stored in the sensed data and any errors introduced into the sensed data during the sensing. An input device, preferably in the form of a detector is responsive to the first signal for generating a control signal containing information about the extent of errors in the sensed data and for extracting a data signal. The control signal is used for performing the above control functions. A method for using information about the extent of errors for a control function to improve the extracted data stored at the predetermined storage locations is also shown.
摘要翻译：使用关于感测数据中的错误程度的信息的装置，用于执行作为控制功能的至少一个，调整磁头的位置以改善相对于轨道的对准，并从两个或更多个数据信号中选择具有最小量的数据信号显示错误。该装置使用关于错误程度的信息来执行用于再现存储在存储介质中的预定存储位置中的数据的控制功能。该装置将用于感测的换能器从预定的存储位置定位存储包含至少一个约束的数据。换能器产生代表包含存储在感测数据中的至少一个约束的数据的第一信号和在感测期间引入到感测数据中的任何误差。优选地以检测器的形式的输入设备响应于第一信号以产生包含关于感测数据中的错误程度的信息并提取数据信号的控制信号。控制信号用于执行上述控制功能。还示出了使用关于控制功能的错误程度的信息来改进存储在预定存储位置处的提取数据的方法。

14. 发明授权

US07358696B2 Method and apparatus for PWM drive 有权
标题翻译： PWM驱动方法和装置
公开(公告)号：US07358696B2
公开(公告)日：2008-04-15
申请号：US11504037
申请日：2006-08-15
申请人： Ayako Iwanaga , Tomokazu Furuno
发明人： Ayako Iwanaga , Tomokazu Furuno
IPC分类号： H02P7/29
CPC分类号： G11B5/59605 , H02P25/034
摘要： During PWM control in which an actuator (9) is connected between the output terminals of a bridge circuit made up of switching elements (121, 122, 221, 222) and power is applied to the actuator (9) with signals G1U, G1L, G2U and G2L, driving timing signals are generated with a time interval (dead time) during which the switching elements (121, 122) and the switching elements (221, 222) are simultaneously turned off, and the actuator (9) is driven so as to have no overlapping dead time between a pair of half-bridge circuits, achieving response even with a differential input PWM signal (S51-S52) having a small time difference.
摘要翻译：在PWM控制期间，致动器（9）连接在由开关元件（121,122,221,222）构成的桥接电路的输出端子之间，并且用信号G 1 U向致动器（9）供电， G 1 L，G 2 U和G 2 L，在开关元件（121,122）和开关元件（221,222）同时断开的时间间隔（死区时间）产生驱动定时信号，以及致动器（9）被驱动以在一对半桥电路之间不具有重叠的死区时间，甚至在具有小时差的差分输入PWM信号（S 51 -S 52）的情况下也实现响应。

15. 发明授权

US07298578B2 Magnetic recording medium and magnetic recording/reproducing apparatus 失效
公开(公告)号：US07298578B2
公开(公告)日：2007-11-20
申请号：US11759556
申请日：2007-06-07
申请人： Makoto Asakura , Hideo Sado
发明人： Makoto Asakura , Hideo Sado
IPC分类号： G11B5/596
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/59605 , G11B5/59616 , G11B5/59633 , G11B5/59655 , G11B5/743 , G11B20/1217 , G11B20/1403 , G11B2020/1232 , G11B2020/1248 , G11B2020/1267 , G11B2020/1284 , G11B2220/2516
摘要： A magnetic recording medium includes a servo area where servo data used for detecting a position of a magnetic head on a magnetic recording medium is recorded; and a writable data area, arranged side by side with the servo area in a track direction, on which user data is written by the magnetic head. The servo area includes a preamble area where a preamble recording pattern that represents data used for providing a clock synchronization of the servo data is formed by a plurality of magnetic sections; and a burst area where data used for detecting a relative position of the magnetic head with respect to a track center position of the servo data is recorded and on which a single burst recording pattern which is a layout pattern that tilts to the preamble recording pattern with a predetermined tilt angle is formed by a plurality of magnetic sections.

16. 发明授权

US07286318B1 Optimization of position mode seeking of a disk drive head based on measured open loop actuator response 有权
标题翻译：基于测量的开环执行器响应优化寻找磁盘驱动器头的位置模式
公开(公告)号：US07286318B1
公开(公告)日：2007-10-23
申请号：US11454526
申请日：2006-06-16
申请人： Jihao Luo
发明人： Jihao Luo
IPC分类号： G11B5/596
CPC分类号： G11B5/59605
摘要： A disk drive and related methods are provided for tuning the control of an actuator for position mode seeking of a head between tracks on a disk based on a measured open loop response of the actuator. The disk drive includes a rotatable data storage disk, a head, an actuator, and a servo controller. The actuator positions the head relative to the disk responsive to a current command signal. The servo controller carries out a position mode seek of the head between tracks on the disk by generating the current command signal which is varied in response to a current feedforward signal that defines a head position profile during the seek, varied in response to a position response signal that defines an expected actuator movement response of the head to the current feedforward signal, and varied in response to a current feedback signal. The servo controller measures an open loop response of the actuator to an open loop test current signal, and uses the measured position mode seek performance to vary contributions of the current feedforward signal and the position response signal to the current command signal to improve the position mode seek performance.
摘要翻译：提供了一种磁盘驱动器和相关方法，用于基于所测量的致动器的开环响应来调谐执行器的位置模式寻找磁头在盘上磁道之间的控制。磁盘驱动器包括可旋转数据存储盘，磁头，致动器和伺服控制器。致动器响应于电流指令信号相对于盘定位头部。伺服控制器通过产生电流指令信号来执行磁头上的磁头的位置模式寻找，该电流指令信号响应于在搜索期间限定磁头位置分布的当前前馈信号而变化，响应于位置响应而变化信号，其将头部预期的致动器运动响应定义为当前前馈信号，并且响应于电流反馈信号而变化。伺服控制器测量致动器对开环测试电流信号的开环响应，并且使用测量的位置模式寻找性能来改变当前前馈信号和位置响应信号对当前指令信号的贡献，以改善位置模式寻求表演。

17. 发明授权

US07262932B2 Magnetic recording medium and magnetic recording/reproducing apparatus 失效
公开(公告)号：US07262932B2
公开(公告)日：2007-08-28
申请号：US11329599
申请日：2006-01-11
申请人： Makoto Asakura , Hideo Sado
发明人： Makoto Asakura , Hideo Sado
IPC分类号： G11B5/596
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/59605 , G11B5/59616 , G11B5/59633 , G11B5/59655 , G11B5/743 , G11B20/1217 , G11B20/1403 , G11B2020/1232 , G11B2020/1248 , G11B2020/1267 , G11B2020/1284 , G11B2220/2516
摘要： A magnetic recording medium includes a servo area where servo data used for detecting a position of a magnetic head on a magnetic recording medium is recorded; and a writable data area, arranged side by side with the servo area in a track direction, on which user data is written by the magnetic head. The servo area includes a preamble area where a preamble recording pattern that represents data used for providing a clock synchronization of the servo data is formed by a plurality of magnetic sections; and a burst area where data used for detecting a relative position of the magnetic head with respect to a track center position of the servo data is recorded and on which a single burst recording pattern which is a layout pattern that tilts to the preamble recording pattern with a predetermined tilt angle is formed by a plurality of magnetic sections.

18. 发明授权

US07253987B1 Disturbance signal reduction in servo systems 有权
标题翻译：伺服系统中的干扰信号减少
公开(公告)号：US07253987B1
公开(公告)日：2007-08-07
申请号：US10617479
申请日：2003-07-10
申请人： David Hyunchul Shim , Jong-Min Lin , Lin Guo
发明人： David Hyunchul Shim , Jong-Min Lin , Lin Guo
IPC分类号： G11B5/596
CPC分类号： G11B5/596 , G11B5/5552 , G11B5/5582 , G11B5/59605
摘要： A servo system includes a first member and a second member that is positionable relative to the first member. A position error signal causes the second member to be positioned at a desired location relative to the first member. The position error signal includes a position error due to a disturbance in the servo system, and the position error is reduced by attenuation of a disturbance signal as a non-linear function of the amplitude of the disturbance signal.
摘要翻译：伺服系统包括可相对于第一构件定位的第一构件和第二构件。位置误差信号使得第二构件相对于第一构件定位在期望的位置。位置误差信号包括由于伺服系统中的干扰引起的位置误差，并且通过干扰信号的衰减作为干扰信号幅度的非线性函数来减小位置误差。

19. 发明授权

US07209321B1 Disk drive pulse width modulating a voice coil motor using model reference current feedback 有权
标题翻译：磁盘驱动器使用模型参考电流反馈来调制音圈电机
公开(公告)号：US07209321B1
公开(公告)日：2007-04-24
申请号：US10633095
申请日：2003-07-31
申请人： George J. Bennett
发明人： George J. Bennett
IPC分类号： G11B5/596
CPC分类号： G11B5/59605 , G11B5/5547
摘要： A disk drive is disclosed comprising a voice coil motor (VCM) driven in a PWM mode using model reference current feedback. The PWM circuitry and VCM form a plant transfer function which varies with changes to the plant characteristics, such as the resistance of the voice coil fluctuating with temperature drift. A plant model having a model transfer function generates an estimated state of the VCM in response to a detected current flowing through the voice coil. A correction block, responsive to the detected current, adjusts PWM timing signals so that the plant transfer function substantially matches the model transfer function.
摘要翻译：公开了一种磁盘驱动器，其包括使用模型参考电流反馈以PWM模式驱动的音圈电机（VCM）。 PWM电路和VCM形成植物传递函数，随着植物特性的变化而变化，例如音调随着温度漂移而波动的电阻。具有模型传递函数的植物模型响应于流过音圈的检测电流产生VCM的估计状态。响应于检测到的电流的校正块调整PWM定时信号，使得植物传递函数基本上符合模型传递函数。

20. 发明申请

US20060291089A1 Write control method of hard disk drive, hard disk drive adapting the method and recording medium thereof 失效
标题翻译：硬盘驱动器的写入控制方法，适配方法的硬盘驱动器及其记录介质
公开(公告)号：US20060291089A1
公开(公告)日：2006-12-28
申请号：US11452898
申请日：2006-06-15
申请人： Cheol-hoon Park , Sang-hoon Chu
发明人： Cheol-hoon Park , Sang-hoon Chu
IPC分类号： G11B5/596
CPC分类号： G11B5/59605 , G11B5/59633
摘要： The present invention relates to a write control method of a hard disk drive, a hard disk drive adapting the method, and a recording medium storing a program for executing the method. The write control method of a hard disk drive having a disk where servo bursts are written radially comprises: generating a primary position error signals (PESs) with respect to a target offtrack based on a difference between servo burst signals read from two adjacent servo bursts; generating a secondary PES with respect to the target offtrack based on a sum of the primary PESs or a difference there between; determining whether both the primary PESs and the secondary PES are within a predetermined write bump limit; and performing a write operation at the target offtrack if both the primary PESs and the secondary PES are within the predetermined write bump limit, otherwise prohibiting the write operation.
摘要翻译：本发明涉及硬盘驱动器的写入控制方法，适应该方法的硬盘驱动器以及存储用于执行该方法的程序的记录介质。具有径向写入伺服脉冲串的盘的硬盘驱动器的写入控制方法包括：基于从两个相邻伺服脉冲串读取的伺服脉冲串信号之间的差异，产生相对于目标轨迹的主要位置误差信号（PES）; 基于主PES的总和或其之间的差异，相对于目标跟踪产生次要PES; 确定主PES和辅助PES两者是否在预定的写突发极限内; 以及如果主PES和辅助PES两者都在预定的写入凸起限度内，则在目标跟踪处执行写入操作，否则禁止写入操作。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式