公开(公告)号：WO1998022940A1

公开(公告)日：1998-05-28

申请号：PCT/US1997007388

申请日：1997-05-02

Applicant: SWAN INSTRUMENTS

Inventor： SWAN INSTRUMENTS ,  KO, Lawrence, K., C. ,  ZHU, Fei, Hong

IPC: G11B05/596

CPC classification number: G11B21/10 ,  G11B5/5526 ,  G11B5/5534 ,  G11B5/59627 ,  G11B5/825 ,  G11B21/085

Abstract: An ultra-high capacity removable media diskette data storage system includes a floppy-type disk drive (10) having a flexible media disk (40) rotatable at a controlled angular velocity which includes a pre-recorded pattern of a plurality of repeating servo bursts (A, B, C, D), each burst having a predetermined integral fraction radial offset relative to the other bursts. A read/write head (34) is positionable relative to data tracks (42) in response to information derived from the servo bursts (A, B, C, D). The data storage system further includes a plurality of calibration tracks (-1, 0, +1), each track including a first series of head-positioning servo sectors interspersed with a second series of calibration servo sectors. The calibration servo sectors include full amplitude servo bursts (A and B) which are read and processed by an electronic circuit (72) which defines a magnitude and polarity signal representing the electronic offset introduced by the circuitry.

Abstract translation: 超高容量可移动介质盘数据存储系统包括软盘式磁盘驱动器（10），其具有以受控角速度旋转的柔性介质盘（40），所述柔性介质盘包括多个重复伺服脉冲串的预先记录的模式（ A，B，C，D），每个突发具有相对于其他突发的预定的积分分数径向偏移。 响应于从伺服脉冲串（A，B，C，D）导出的信息，读/写头（34）可相对于数据轨道（42）定位。 数据存储系统还包括多个校准轨道（-1,0，+1），每个轨道包括散布有第二系列校准伺服扇区的头部定位伺服扇区的第一系列。 校准伺服扇区包括由幅度和极性信号表示由电路引入的电子偏移的电子电路（72）读取和处理的全幅度伺服脉冲串（A和B）。

公开(公告)号：WO1997045833A1

公开(公告)日：1997-12-04

申请号：PCT/US1997008638

申请日：1997-05-21

Applicant: SYQUEST TECHNOLOGY, INC.

Inventor： SYQUEST TECHNOLOGY, INC. ,  PHAM, Ich ,  DROUIN, David ,  HOWARD, Evelyn

IPC: G11B05/596

CPC classification number: G11B21/106 ,  G11B5/5534 ,  G11B5/5547 ,  G11B5/59627 ,  G11B21/083

Abstract: A method for applying an optimal seeking technique to a disk file with excessive repeatable runout includes a method of modifying a control signal (ue(k)) provided by a controller (16) for controlling a rotary actuator arm (12) of a disk drive. The control signal (ue(k)) is modified during track seeking by adding a runout state (xa(k)) that is calculated each time a servo sector of a target data track on a surface of a disk is sampled by read/write heads carried by the actuator arm by a runout compensator (18). The modified control signal (up(k)) is provided to the actuator (12) for positioning the head to a desired track. A calibration algorithm can be used during track following to determine runout magnitude and runout phase at various preselected calibration tracks on the surface of the disk. A seeking algorithm can be implemented to compensate for the relative runout magnitude and phase variation between calibration and target tracks.

Abstract translation: 一种对具有过多可重复跳动的盘文件应用最佳寻找技术的方法包括一种修改由控制器（16）提供的用于控制盘驱动器的旋转致动器臂（12）的控制信号（ue（k））的方法， 。 通过添加每次通过读/写采样盘表面上的目标数据轨道的伺服扇区时计算出的跳动状态（xa（k）），在轨迹寻找期间修改控制信号（ue（k）） 由致动器臂由跳动补偿器（18）承载的头部。 修改的控制信号（up（k））被提供给致动器（12），用于将头部定位到期望的轨道。 轨道跟踪期间可以使用校准算法来确定磁盘表面上各种预选校准轨迹的跳动幅度和跳动相位。 可以实现搜索算法来补偿校准和目标轨道之间的相对跳动幅度和相位变化。

公开(公告)号：WO1997032301A1

公开(公告)日：1997-09-04

申请号：PCT/US1997002910

申请日：1997-02-18

Applicant: QUANTUM CORPORATION

Inventor： QUANTUM CORPORATION ,  SHEPHERD, Stanley, H. ,  EHRLICH, Richard, M. ,  WISEMAN, James, V. ,  CURRAN, Richard, T. ,  AKIN, William, R., Jr.

IPC: G11B05/596

CPC classification number: G11B5/59627 ,  G11B5/59638 ,  G11B5/59655

Abstract: Embedded servo sectors (SS) within a data track of a hard disk drive including a rotating data storage disk (12) and a closed loop rotary actuator structure (20) for positioning a data transducer head (22) relative to the data track are written by a method including the steps of positioning the rotary actuator structure relative to the data track with a laser-interferometer-based servo writer and writing a pattern of circumferentially, sequential, radially offset fine position bursts within each servo sector with the data transducer head, this step including writing-in undetermined position errors within each pattern being written, moving the disk drive to a self scan environment away from the servo writer, operating the rotary actuator structure (20) in closed loop for following the data track by reference to the servo burst pattern, extracting the undetermined position error from each pattern thereby to iteratively determine written-in position errors, generating burst correction values from the determined written-in position errors, and writing the burst correction values to the data track for later use by the closed loop rotary structure (20) during following of the data track to remove the written-in position errors.

Abstract translation: 在包括用于相对于数据轨道定位数据换能器头（22）的旋转数据存储盘（12）和闭环旋转致动器结构（20）的硬盘驱动器的数据轨道内的嵌入式伺服扇区（SS）被写入 通过一种方法包括以下步骤：利用基于激光干涉仪的伺服写入器将旋转致动器结构相对于数据轨道定位，并用数据转换头在每个伺服扇区内写入周向上，顺序的，径向偏移的精细位置脉冲串的模式， 该步骤包括写入每个模式内的写入不确定的位置错误，将磁盘驱动器移动到远离伺服写入器的自扫描环境，以闭环方式操作旋转致动器结构（20），以便通过参考数据轨迹跟随数据轨道 伺服突发模式，从每个模式提取未定位置误差，从而迭代确定写入位置误差，产生突发校正值 并且将所述突发校正值写入所述数据轨道，以供所述闭环旋转结构（20）在所述数据轨道的后续操作期间使用以消除所述写入位置误差。

公开(公告)号：WO1993006595A1

公开(公告)日：1993-04-01

申请号：PCT/US1992007909

申请日：1992-09-24

Applicant: INTEGRAL PERIPHERALS, INC.

Inventor： INTEGRAL PERIPHERALS, INC. ,  ANDREWS, Thomas, L. ,  COUNTS, Gary, E.

IPC: G11B05/596

CPC classification number: G11B5/59627

Abstract: A secondary servo compensator (400) provides on-line real-time compensation for disk runout that occurs during operation of the miniature disk drive (300). The servo system includes a servo compensator (410) that generates an actuator position signal for positioning the read/write head (302) over the track. The secondary servo compensator (400) generates a runout compensation signal (401) during operation of the disk drive (300). A actuator signal generator (420) combines the actuator adjustment signal (411) that is generated using the position error signal (399) from sector "i" and the runout compensation signal (401) that is generated using the position error signal (399) for sector "i-1" to create a runout compensated actuator signal (421) for sector "i". The servo system, using the information from the servo compensator (410) and the secondary servo compensator (400), continuously maintains the read/write head (302) over the desired track centerline.

Abstract translation: 辅助伺服补偿器（400）提供在微型盘驱动器（300）的操作期间发生的盘跳动的在线实时补偿。 伺服系统包括伺服补偿器（410），其产生用于将读/写头（302）定位在轨道上的致动器位置信号。 次级伺服补偿器（400）在盘驱动器（300）的操作期间产生跳动补偿信号（401）。 致动器信号发生器（420）将使用位置误差信号（399）产生的致动器调节信号（411）与扇区“i”和使用位置误差信号（399）产生的跳动补偿信号（401） 对于扇区“i-1”，为扇区“i”创建跳动补偿致动器信号（421）。 使用来自伺服补偿器（410）和辅助伺服补偿器（400）的信息的伺服系统将读/写头（302）连续地保持在期望的轨道中心线上。

公开(公告)号：WO1993000677A1

公开(公告)日：1993-01-07

申请号：PCT/US1992005345

申请日：1992-06-24

Applicant: MAXTOR

Inventor： MAXTOR ,  WILSON, Rosser, S. ,  BUTLER, Peter

IPC: G11B05/596

CPC classification number: G11B5/59611 ,  G11B5/5534 ,  G11B5/5543 ,  G11B5/59627 ,  G11B5/59644 ,  G11B5/59655 ,  G11B11/10576 ,  G11B19/04 ,  G11B21/083 ,  G11B21/106

Abstract: Apparatus for dectecting data track misregistration is described. The present invention involves the interaction of a microprocessor (6B) with a demodulator (5). Microcode within the microprocessor (6B) initiates a misregistration scan of all data tracks at specific intervals to generate a calibration offset table that is used to direct the heads during the subsequent interval. A demodulator (5) obtains the peak values of calibration servo bursts, (401, 402), displaced one-half of the track width to either side of a track, and outputs a timing pulse proportional to their respective peaks voltage values. A timer (6C) within the microprocessor (6B) extracts the time values, and the misregistration displacement is calculated by the comparison of the inner burst and outer burst time values. The calculated displacement is used in the offset table for subsequent disk references.

公开(公告)号：WO1993000676A2

公开(公告)日：1993-01-07

申请号：PCT/US1992005262

申请日：1992-06-23

Applicant: SYQUEST TECHNOLOGY, INC.

Inventor： SYQUEST TECHNOLOGY, INC. ,  RICE, Mark, S. ,  BROWN, Rick, D.

IPC: G11B05/596

CPC classification number: G11B5/5965

公开(公告)号：WO1992007354A1

公开(公告)日：1992-04-30

申请号：PCT/US1991007104

申请日：1991-09-27

Applicant: SERVO TRACK WRITER CORPORATION

Inventor： SERVO TRACK WRITER CORPORATION ,  MICHELSON, Gajus ,  VALLIANT, Willian, W. ,  LEWIS, Martyn, A. ,  HAZEL, Robert, Lawrence

IPC: G11B05/596

CPC classification number: G11B27/34 ,  G11B21/083 ,  G11B27/36 ,  G11B33/10

Abstract: A system and method for controlling and analyzing data storage systems, and more particularly, to systems and methods for controlling and analizing performance and physical attributes of a sealed disk drive unit using an externally accessible but internally integral positioning system. A disk drive having a sealed housing utilizes a reflective planar mirror on the rotary actuator controlling the head drive assembly. A narrow beam directed through a window on the side wall of the housing onto the mirror is reflected off at angle dependent on the actuator position to a beam sensitive detector. A translator system driven by a positioner disposed at a distance from the rotary actuator axis which is substantially greater than the distance between the actuator axis and the head assembly, is used to vary the relationship between the directed and reflected beams. This system incorporates the rotary actuator in a closed loop servo that positions the actuator precisely at different locations relative to the recording medium, so that the data may be written and analyzed at off-track track position increments. The invention further provides, at an early or later manufacturing stage, means for calculating bias torque and friction without the need for prerecorded embedded servo information.

Abstract translation: 一种用于控制和分析数据存储系统的系统和方法，更具体地说，涉及使用外部可访问但内部整合的定位系统来控制和分析密封盘驱动单元的性能和物理属性的系统和方法。 具有密封壳体的盘驱动器利用控制头驱动组件的旋转致动器上的反射平面镜。 通过壳体侧壁上的窗口引导到镜子上的窄光束以取决于致动器位置的角度被反射到光束敏感探测器。 由定位器驱动的转换器系统被用于改变定向反射光束与反射光束之间的关系，该定位器设置在远离旋转致动器轴线的位置，其大致大于致动器轴线和头部组件之间的距离。 该系统将旋转致动器结合在闭环伺服中，其将致动器精确地定位在相对于记录介质的不同位置处，使得数据可以在离轨轨道位置增量处被写入和分析。 本发明还在早期或后期的制造阶段提供用于计算偏置扭矩和摩擦而不需要预先记录的嵌入式伺服信息的装置。

公开(公告)号：WO1991002351A1

公开(公告)日：1991-02-21

申请号：PCT/US1990004209

申请日：1990-07-26

Applicant: LITERAL CORPORATION

Inventor： LITERAL CORPORATION ,  RICHGELS, Jerome, Francis

IPC: G11B05/596

CPC classification number: G11B21/085

Abstract: A random access information storage disk drive system of the optical or magneto-optical type with the read/write head (11) mounted between parallel flexures (20, 21) for suspension in a linear actuator motor (25). Dynamic spring force compensation is provided incrementally as the head (11) is moved radially inward and outward of the at-rest position of the flexures (20, 21) to compensation for the increasing restoring force exerted by the flexures (20, 21) as the head (11) is moved towards the extremes of its tracking path.

公开(公告)号：WO1985002933A1

公开(公告)日：1985-07-04

申请号：PCT/US1984002085

申请日：1984-12-19

Applicant: NCR CORPORATION

Inventor： NCR CORPORATION ,  BARNES, Ronald, Leigh

IPC: G11B05/596

CPC classification number: G11B13/04 ,  G11B5/59677 ,  G11B23/42

Abstract: An apparatus and method for selectively positioning a read/write head (14) adjacent a record medium (10) on which optical guidelines (20) have been recorded for magnetically reading or writing data on one of a plurality of data tracks thereon. Each data track is associated with one of the optical guidelines (20) and may include an identification optically coded therein. The apparatus includes a light source (26) for illuminating the record medium (10) adjacent the read/write head (14), and a light detector system (28) for detecting light reflected (46) from one of the optical guidelines (20). A servo mechanism (60) adjusts the position of the read/write head (14) responsive to reflected light (46) detected by the light detector system (28). Since the track information is recorded optically on the record medium (10), this allows for optical sensing which is most accurate and does not interfere with the magnetic reading/writing function of the head (14), and the medium is capable of carrying more magnetically recorded data information than conventional media of the same size.

Abstract translation: 一种用于选择性地定位与记录介质相邻的读/写头（14）的装置和方法，其上已经记录有光学准则（20），用于在其上的多个数据轨道之一上磁读取或写入数据。 每个数据轨道与光学准则（20）中的一个相关联，并且可以包括在其中光学编码的标识。 该装置包括用于照亮与读/写头（14）相邻的记录介质（10）的光源（26），以及用于从光学准则（20）中的一个检测反射光（46）的光检测器系统（28） ）。 伺服机构（60）响应于由光检测器系统（28）检测到的反射光（46）来调节读/写头（14）的位置。 由于轨道信息被光学地记录在记录介质（10）上，所以这允许最准确并且不干扰头部（14）的磁读/写功能的光学感测，并且介质能够承载更多 与相同尺寸的传统介质磁记录数据信息。

公开(公告)号：WO1998016922A1

公开(公告)日：1998-04-23

申请号：PCT/US1997018325

申请日：1997-10-10

Applicant: SEAGATE TECHNOLOGY, INC.

Inventor： SEAGATE TECHNOLOGY, INC. ,  MEYER, Dallas, W. ,  NAGARAJAN, Subrahmanyan

IPC: G11B05/596

CPC classification number: G11B5/012 ,  G11B5/5526 ,  G11B5/59627 ,  G11B5/59633 ,  G11B5/59683 ,  G11B5/82 ,  G11B2005/0021

Abstract: A magnetic disc drive has a magnetoresistive element (26) for reading user data from concentric tracks of a rotatable magnetic recording disc (32). The magnetoresistive element has a resistance based on a magnetic field derived from user data and based on temperature of the magnetoresistive element. Heat generated by the bias current through the head is in part dissipated through the disc, the amount of heat dissipated being representative of disc/head spacing. The surface of the recording disc has contour elements (50, 52, 54) arranged in a pattern representing servo data, the contour elements having a height such that the spacing between the magnetoresistive element and the contour elements is different from the spacing between the magnetoresistive element and a nominal surface of the recording disc. As a result, a modulated signal (66) from the head contains a component representative of user data and a component representative of servo data.

Abstract translation: 磁盘驱动器具有用于从可旋转磁记录盘（32）的同心轨道读取用户数据的磁阻元件（26）。 磁阻元件具有基于从用户数据导出的磁场和基于磁阻元件的温度的电阻。 通过头部的偏置电流产生的热量部分地通过光盘消散，散热量代表光盘/磁头间距。 记录盘的表面具有以表示伺服数据的图案布置的轮廓元素（50,52,54），轮廓元件具有使得磁阻元件和轮廓元件之间的间隔不同于磁阻之间的间隔的高度 元件和记录盘的标称表面。 结果，来自头部的调制信号（66）包含表示用户数据的部件和表示伺服数据的部件。