公开(公告)号：US06639750B1

公开(公告)日：2003-10-28

申请号：US09676273

申请日：2000-09-28

申请人： Masakazu Hirano ,  Nobuyuki Suzuki

发明人： Masakazu Hirano ,  Nobuyuki Suzuki

IPC分类号： G11B2102

CPC分类号： G11B5/54 ,  G11B21/12

摘要： This invention relates to a head loading/unloading method for moving a head that reads storage medium away from that storage medium, and makes optimal unloading operation possible. In a storage device comprising a storage medium 6, head 4, actuator 3 and control circuits 9, when the amount of continuous time when there is no access reaches the unload starting time, the head 4 is moved away from the storage medium 6. This unload starting time is made to be variable and is changed according to the state of the device. Therefore, an optimal unloading operation that corresponds to the state of the device is possible, that also has a balance among device life, access time and resistance to shock.

摘要翻译： 本发明涉及一种用于移动读取存储介质远离该存储介质的磁头的磁头加载/卸载方法，并且使得最佳卸载操作成为可能。 在包括存储介质6，头4，致动器3和控制电路9的存储装置中，当不存在访问的连续时间量达到卸载开始时间时，头4从存储介质6移开。 卸载开始时间是可变的，并且根据设备的状态而改变。 因此，与设备的状态对应的最佳卸载操作是可能的，这也在设备寿命，访问时间和抗冲击性之间具有平衡。

公开(公告)号：US06636374B1

公开(公告)日：2003-10-21

申请号：US09556887

申请日：2000-04-19

申请人： Ban Hok Goh ,  Nan Ling Goh ,  Tze Ming Jimmy Pang ,  Kah Liang Gan ,  LaiKein James Chang

发明人： Ban Hok Goh ,  Nan Ling Goh ,  Tze Ming Jimmy Pang ,  Kah Liang Gan ,  LaiKein James Chang

IPC分类号： G11B2102

CPC分类号： G11B5/54 ,  G11B19/20 ,  G11B21/12

摘要： A system for hardware intelligent speed monitoring and auto-retract is disclosed. The system contains a monitoring device that monitors the TACH (Tachometer) output of motor driver. The device provides a trigger to the signal processor and a retract mechanism to retract the actuator when the spindle motor speed is unexpectedly much higher or lower than normal speed. The system DSP (Digital Signal Processor) is unaware of such occurrence.

摘要翻译： 公开了一种用于硬件智能速度监测和自动缩回的系统。 该系统包含监控电机驱动器的TACH（转速表）输出的监控装置。 当主轴电机速度意外地高于或低于正常速度时，该装置向信号处理器提供触发器和一个缩回机构以使致动器缩回。 系统DSP（数字信号处理器）不知道这种情况。

公开(公告)号：US06633451B1

公开(公告)日：2003-10-14

申请号：US09426435

申请日：1999-10-25

申请人： Timothy J. Chainer ,  Bucknell C. Webb ,  Mark D. Schultz ,  Edward J. Yarmchuk

发明人： Timothy J. Chainer ,  Bucknell C. Webb ,  Mark D. Schultz ,  Edward J. Yarmchuk

IPC分类号： G11B2102

CPC分类号： G11B5/59633

摘要： A method is provided for writing a servo-pattern on a storage medium. According to the method, first timing marks are written at a first radial position of the storage medium, and the head is moved to a second radial position. Time intervals between selected pairs of the first timing marks are measured, and other timing marks are written at the second radial position of the storage medium. The measuring step is performed after the moving step. In one preferred method, the steps of moving, measuring, and writing other timing marks are repeated until the servo-pattern is written on an entire surface of the storage medium. A method is also provided for generating an initial aligned pattern of timing marks for self-servo-writing on a storage medium.

摘要翻译： 提供一种用于将伺服图案写入存储介质的方法。 根据该方法，将第一定时标记写入存储介质的第一径向位置，并且将头移动到第二径向位置。 测量所选择的第一定时标记对之间的时间间隔，并且其他定时标记被写入存储介质的第二径向位置。 测量步骤在移动步骤之后进行。 在一个优选的方法中，重复移动，测量和写入其它定时标记的步骤，直到伺服图案被写入存储介质的整个表面。 还提供了一种用于在存储介质上产生用于自伺服写入的定时标记的初始对准图案的方法。

公开(公告)号：US06631045B1

公开(公告)日：2003-10-07

申请号：US09431303

申请日：1999-10-29

申请人： Giorgio Pedrazzini

发明人： Giorgio Pedrazzini

IPC分类号： G11B2102

CPC分类号： G11B5/6005 ,  G11B5/022 ,  G11B5/54 ,  G11B21/10 ,  G11B21/106 ,  G11B21/22

摘要： A method and apparatus to control application of a drive current to a voice coil in a hard disk drive system modulates a periodic waveform between either a reference level and a signal associated with a stored back electromotive force (BEMF) in the voice coil. The drive current is applied to the voice coil during periods of time when the periodic waveform is modulated by the signal associated with the stored BEMF. The amplitude and duration of the drive current correspondingly decreases as the BEMF in the voice coil decreases. Thus, the voice coil is controlled based on its BEMF and is provided with decreasing power to move a head mechanism to or from a ramp assembly.

摘要翻译： 用于控制对硬盘驱动器系统中的音圈的驱动电流的应用的方法和装置调制参考电平和与音圈中存储的反电动势（BEMF）相关联的信号之间的周期性波形。 在通过与存储的BEMF相关联的信号调制周期波形的时间段期间，驱动电流被施加到音圈。 随着音圈中的BEMF的减小，驱动电流的幅度和持续时间相应地减小。 因此，音圈基于其BEMF被控制，并且具有降低的功率以将头机构移动到斜坡组件或从斜坡组件移动。

公开(公告)号：US06628471B1

公开(公告)日：2003-09-30

申请号：US09798801

申请日：2001-03-02

申请人： ShuangQuan Min ,  Ricky WeiWatt Yeo ,  KianKeong Ooi ,  Xiong Liu ,  BengWee Quak ,  ChiapHeok Ang

发明人： ShuangQuan Min ,  Ricky WeiWatt Yeo ,  KianKeong Ooi ,  Xiong Liu ,  BengWee Quak ,  ChiapHeok Ang

IPC分类号： G11B2102

CPC分类号： G11B5/59627 ,  G11B5/59633

摘要： The magnitude and frequency of runout due to vibration of the cage of the spindle motor is detected. A plurality of servo patterns are written to a reference track having a clock pattern on the disc, and the plurality of servo patterns are then read over a plurality of revolutions of the disc using a clock head. The magnitude of position error of the clock head relative to the reference track is identified for each of the read servo patterns. The magnitude and frequency of runout due to cage vibration is identified from the position errors. Servo patterns are written to user tracks on the disc by identifying periods of low magnitude runout due to cage vibration, and writing the servo patterns to the user track during those periods of low magnitude runout.

摘要翻译： 检测到由主轴电机的保持架振动引起的跳动的幅度和频率。 将多个伺服模式写入到具有盘上的时钟图案的参考轨道，然后使用时钟头在盘的多个转圈上读取多个伺服模式。 为每个读取的伺服模式识别时钟磁头相对于参考磁道的位置误差的大小。 从位置误差中确定由于保持架振动引起的跳动的幅度和频率。 通过识别由于笼振动引起的低幅度跳动的周期，并且在低幅度跳动期间将伺服模式写入用户轨迹，将伺服模式写入盘上的用户轨道。

公开(公告)号：US06621651B1

公开(公告)日：2003-09-16

申请号：US09577896

申请日：2000-05-24

申请人： Ryan T. Ratliff ,  Curtis A. Trammell

发明人： Ryan T. Ratliff ,  Curtis A. Trammell

IPC分类号： G11B2102

CPC分类号： G11B21/12 ,  G11B5/54 ,  G11B5/5569

摘要： A disc drive includes a base and a voice coil magnet attached to the base. The voice coil magnet has a first portion for providing a magnetic field having a first direction and magnitude, and a second portion for providing a magnetic field having a second direction and magnitude. The voice coil magnet also has a transition zone between the first portion and the second portion of the voice coil magnet where the magnetic field from the first portion substantially cancels the magnetic field from the second portion of the voice coil magnet. The disc drive also includes an actuator assembly rotatably attached to base. The actuator assembly includes a yoke, and a voice coil attached to the yoke of the actuator. The voice coil is positioned within the magnetic field of the voice coil magnet such that passing a current through the voice coil generates a second magnetic field to position the actuator assembly. A ferromagnetic material is attached to the actuator assembly. The ferromagnetic material is positioned within the magnetic field of the voice coil magnet to induce a force from the magnetic field of the voice coil magnet to drive the actuator to a park position.

摘要翻译： 磁盘驱动器包括附接到基座的基座和音圈磁体。 音圈磁体具有用于提供具有第一方向和大小的磁场的第一部分和用于提供具有第二方向和大小的磁场的第二部分。 音圈磁体还具有在音圈磁体的第一部分和第二部分之间的过渡区，其中来自第一部分的磁场基本上抵消了来自音圈磁体的第二部分的磁场。 盘驱动器还包括可旋转地附接到基座的致动器组件。 致动器组件包括轭和连接到致动器的轭的音圈。 音圈位于音圈磁体的磁场内，使得通过音圈的电流产生第二磁场以定位致动器组件。 铁磁材料附接到致动器组件。 铁磁材料位于音圈磁体的磁场内，以引起来自音圈磁铁的磁场的力，以将致动器驱动到停放位置。

公开(公告)号：US06611404B1

公开(公告)日：2003-08-26

申请号：US09267746

申请日：1999-03-11

申请人： Hidetoshi Kabasawa

发明人： Hidetoshi Kabasawa

IPC分类号： G11B2102

CPC分类号： G11B5/5521

摘要： A disk apparatus has a head carriage and a head carriage drive mechanism. The head carriage has a signal lead wire and a strip of flexible cable extending laterally from the head carriage in a direction X2. The head carriage drive mechanism has voice coil motors located on each side X2 and side X1 of the head carriage, in which a number of turns N2 in a drive coil of a voice coil motor on the X2 side is greater than a number of turns N1 in a drive coil of a voice coil motor on the opposite X1 side. As a result, the X2-side drive coil motor generates a propulsive force greater than that generated by the X1-side drive coil motor by an amount corresponding to the imbalance in load between the two sides.

摘要翻译： 盘装置具有头托架和头托架驱动机构。 头托架具有信号引线和从头托架沿X2方向横向延伸的柔性缆线。 头托架驱动机构具有位于头托架的每一侧X2和侧X1上的音圈马达，其中X2侧的音圈马达的驱动线圈中的匝数N2大于匝数N1 在相对X1侧的音圈马达的驱动线圈中。 结果，X2侧驱动线圈电动机产生大于由X1侧驱动线圈电动机产生的推进力与对应于两侧之间的负载不平衡的量。

公开(公告)号：US06606213B1

公开(公告)日：2003-08-12

申请号：US09332351

申请日：1999-06-11

申请人： Kian Keong Ooi ,  Jack Ming Teng ,  Soon Wah Leow ,  Ming Zhong Ding

发明人： Kian Keong Ooi ,  Jack Ming Teng ,  Soon Wah Leow ,  Ming Zhong Ding

IPC分类号： G11B2102

CPC分类号： G11B5/59633

摘要： A disc drive system and method of screening an actuator resonance includes a servo controller providing a multi-servo zone architecture. The servo controller partitions the disc into a plurality of servo zones. Each of the servo zones has a corresponding servo gain. When an actuator resonance is detected in one of the servo zones, the servo controller reduces the corresponding servo gain of the detected servo zone such that a drive with very low resonance at a certain zone does not affect the servo bandwidth of the other good zones. Accordingly, a drive with very low resonance is prevented from being scrapped. Further, the screening technique allows a drive to have an adequate servo margin for its normal operation after going through a resonance detection test.

摘要翻译： 盘驱动系统和筛选致动器谐振的方法包括提供多伺服区结构的伺服控制器。 伺服控制器将盘划分成多个伺服区。 每个伺服区具有相应的伺服增益。 当在其中一个伺服区域中检测到致动器谐振时，伺服控制器减小检测到的伺服区域的相应伺服增益，使得在某一区域具有非常低的共振的驱动器不影响其它良好区域的伺服带宽。 因此，防止具有非常低谐振的驱动器被报废。 此外，筛选技术允许驱动器在进行共振检测测试之后具有用于其正常操作的足够的伺服余量。

公开(公告)号：US06603627B1

公开(公告)日：2003-08-05

申请号：US09584302

申请日：2000-05-31

申请人： Timothy Joseph Chainer ,  Mark Delorman Schultz ,  Edward John Yarmchuk

发明人： Timothy Joseph Chainer ,  Mark Delorman Schultz ,  Edward John Yarmchuk

IPC分类号： G11B2102

CPC分类号： G11B5/59633

摘要： A technique for self-servowriting a servopattern on a data storage medium is disclosed. An initial set of servopattern tracks is written by moving an actuator against a compliant structure (e.g., crashstop) with a first force applied thereto to hold the actuator in a first position to write a first track of the servopattern. The force is changed, thereby reaching a second position of the actuator against the compliant structure, at which a second track of the servopattern is written. The process is iterated for additional tracks. The distances (i.e., overlap) between pairs of written tracks are measured using a read element of the actuator, and this measured distance is compared to predetermined, desired distance. If the measured distance is within a specified tolerance, the process is complete; and if not, the tracks are erased and the process is repeated with changed forces applied to the actuator against the crashstop resulting in modified distances between tracks. The present invention overcomes the problem of self-servowriting an initial set of tracks of a servopattern, especially when the read element is separated from the write element in a direction along which the servowriting steps.

摘要翻译： 公开了一种在数据存储介质上自伺服编程伺服模式的技术。 通过使施加到其上的第一力将致动器抵靠顺应结构（例如，止动停止）移动来写入初始的伺服模式轨道集合，以将致动器保持在第一位置以写入伺服模式的第一轨迹。 该力被改变，从而达到致动器的第二位置抵靠柔性结构，伺服模式的第二轨迹被写入该柔性结构。 该过程被迭代用于附加轨道。 使用致动器的读取元件测量成对的写入轨迹之间的距离（即，重叠），并将该测量的距离与预定的期望距离进行比较。 如果测量距离在规定的公差内，则该过程完成; 如果不是，轨道被擦除，并且重复该过程，其中施加到致动器的改变的力抵抗着落停止，导致轨道之间的修改的距离。 本发明克服了对伺服模式的初始轨迹集进行自伺服的问题，特别是当读取元件沿着伺服驱动步骤的方向与写入元件分离时。

公开(公告)号：US06600621B1

公开(公告)日：2003-07-29

申请号：US09583832

申请日：2000-05-31

申请人： Edward John Yarmchuk

发明人： Edward John Yarmchuk

IPC分类号： G11B2102

CPC分类号： G11B5/59655 ,  G11B5/59627

摘要： A technique, including a method and associated system, for multitrack positioning during self-servowriting on a storage medium, and for controlling error growth as the servowriting steps across the storage medium. Readback amplitudes of multiple bursts from previously written tracks are combined using a parabolic interpolation relationship, for positioning when writing bursts on a subsequent track. This technique is especially useful for systems in which the read element is separated from the write element in the direction in which the servowriting steps across the medium. Also disclosed is an associated technique for controlling error growth, in which a reference waveform is derived and stored for use when writing subsequent tracks. The individual reference adjustments resultant from the multitrack positioning signal are combined in a weighted sum which controls error growth when the weights are calculated properly, as disclosed herein.

摘要翻译： 一种包括方法和相关系统的技术，用于在存储介质上的自伺服驱动期间进行多轨定位，并且用于控制作为跨存储介质的伺服驱动步骤的错误增长。 使用抛物线插值关系组合来自先前写入的轨道的多个突发的回读幅度，用于在后续轨道上写入脉冲串时进行定位。 该技术对于其中读取元件沿着跨过介质的伺服驱动步骤的方向与写入元件分离的系统特别有用。 还公开了一种用于控制误差增长的相关技术，其中导出并存储参考波形以便在写入随后的轨道时使用。 由多轨定位信号产生的单独的参考调整以加权和组合，该加权和控制当权重被适当地计算时的误差增长，如本文所公开的。