公开(公告)号：US20090195914A1

公开(公告)日：2009-08-06

申请号：US12364664

申请日：2009-02-03

申请人： Sang-min SUH ,  Kwang-jo JUNG ,  Jeong-heon HAN

发明人： Sang-min SUH ,  Kwang-jo JUNG ,  Jeong-heon HAN

IPC分类号： G11B21/02

CPC分类号： G11B5/5565 ,  G11B5/596

摘要： A hard disk drive is provided. The hard disk drive comprises a plant configured to drive the hard disk drive, a main controller configured to control the plant, and an additional controller connected in parallel with the main controller. A response function in consideration of the plant and the main controller is referred to as a main response function, and a response function in consideration of the plant and the additional controller is referred to as a first response function. The first response function cancels a function value corresponding to a section of the main response function that is associated with disturbance. The response function of the additional controller may be designed using the first response function. The hard disk drive removes a portion of the main response function to minimize the influence of the disturbance.

摘要翻译： 提供了一个硬盘驱动器。 硬盘驱动器包括被配置为驱动硬盘驱动器的设备，被配置为控制工厂的主控制器以及与主控制器并联连接的附加控制器。 考虑到工厂和主控制器的响应功能被称为主要响应功能，并且考虑到工厂和附加控制器的响应功能被称为第一响应功能。 第一响应函数取消与干扰相关联的主响应函数的一部分相对应的函数值。 可以使用第一响应函数来设计附加控制器的响应函数。 硬盘驱动器删除主要响应功能的一部分，以最小化扰动的影响。

公开(公告)号：US07277250B2

公开(公告)日：2007-10-02

申请号：US11019667

申请日：2004-12-23

申请人： Seung-chul Park ,  Kwang-jo Jung

发明人： Seung-chul Park ,  Kwang-jo Jung

IPC分类号： G11B21/02 ,  G11B5/596 ,  G06F12/00

CPC分类号： G11B5/58 ,  G11B5/5526

摘要： An optimal track zero determination method used in a hard disk drive and a hard disk drive using the method. The method has the operations: (a) performing a sequential seek operation on target tracks of a disk, in units of predetermined numbers of tracks, outwardly, from a track separate from a physical track zero position obtained in a servo track write operation, by a predetermined distance toward the physical track zero position; (b) determining whether the target tracks belong to a region where a track-following operation is normally performed, and determining whether an actuator arm connected to a transducer is in contact with a mechanical buffering unit during the sequential seek operation of operation (a); and (c) selecting as a logical track zero, the target track belonging to the region where the track following operation is normally performed and the actuator arm is not in contact with the mechanical buffering unit.

摘要翻译： 使用该方法在硬盘驱动器和硬盘驱动器中使用的最佳轨迹零确定方法。 该方法具有以下操作：（a）以预定数量的磁道为单位，以与伺服磁道写入操作中获得的物理磁道零位置分开的轨道向外，以磁盘的目标磁道执行顺序搜索操作，通过 距离物理轨道零位置的预定距离; （b）确定目标轨道是否属于通常执行跟踪操作的区域，并且在操作（a）的顺序搜索操作期间确定连接到换能器的致动器臂是否与机械缓冲单元接触， ; 以及（c）选择属于正常执行跟踪操作的区域的目标轨道和致动器臂不与机械缓冲单元接触的逻辑轨道零点。

公开(公告)号：US20060158772A1

公开(公告)日：2006-07-20

申请号：US11263801

申请日：2005-11-02

申请人： Jung-ho Lee ,  Kwang-jo Jung

发明人： Jung-ho Lee ,  Kwang-jo Jung

IPC分类号： G11B5/596

CPC分类号： G11B5/5547

摘要： A disk drive control method and apparatus. In particular, a torque constant correction method and apparatus in a disk drive using a multiple sinusoidal seek servo scheme. The torque constant correction method includes: performing a test seek routine for torque constant correction by using a multiple sinusoidal seek scheme; storing a seek driving current trajectory value for driving a voice coil motor, the seek driving current trajectory value being generated from the test seek routine; calculating a primary harmonic sinusoidal coefficient by performing a discrete Fourier transformation on the driving current trajectory value; calculating a primary harmonic sinusoidal coefficient from a multiple-sinusoidal-seek design current trajectory applied to the test seek; and defining a torque constant correction value as a ratio of the primary harmonic sinusoidal coefficient calculated by performing the discrete Fourier transformation to the primary harmonic sinusoidal coefficient calculated from a multiple-sinusoidal-seek design current trajectory.

摘要翻译： 磁盘驱动器控制方法和装置。 特别地，使用多重正弦寻找伺服方案的磁盘驱动器中的转矩常数校正方法和装置。 扭矩常数校正方法包括：通过使用多重正弦寻找方案来执行用于转矩恒定校正的测试寻道程序; 存储用于驱动音圈电机的寻道驱动电流轨迹值，所述寻道驱动电流轨迹值是从所述测试寻道程序产生的; 通过对驱动电流轨迹值进行离散傅里叶变换来计算一次谐波正弦系数; 从应用于测试寻道的多次正弦搜索设计当前轨迹计算一次谐波正弦系数; 并且将扭矩常数校正值定义为通过执行离散傅里叶变换计算的一次谐波正弦系数与从多次正弦寻找设计当前轨迹计算出的一次谐波正弦系数的比率。

公开(公告)号：US07057842B2

公开(公告)日：2006-06-06

申请号：US10984746

申请日：2004-11-10

申请人： Da-woon Chung ,  Kwang-jo Jung

发明人： Da-woon Chung ,  Kwang-jo Jung

IPC分类号： G11B21/02

CPC分类号： G11B5/59633

摘要： An offline self servo writing method capable of improving servo writing accuracy and reducing copying time by designing a servo pattern of a reference disk to have the same resolution as a final servo pattern, and a disk drive using the method. The offline self servo writing method includes a servo information writing process performed after a reference disk, where a reference servo pattern having the same resolution as a final servo pattern, is written and one or more blank disks are assembled in the disk drive, wherein the servo information writing process is performed by simultaneously writing identical final servo information on all disks including the reference disk by using the reference servo pattern while following tracks of the reference disk.

摘要翻译： 一种离线自伺服写入方法，其能够通过设计参考盘的伺服模式来提高伺服写入精度并缩短复印时间，以使其具有与最终伺服模式相同的分辨率，以及使用该方法的磁盘驱动器。 离线自伺服写入方法包括在参考盘之后执行的伺服信息写入处理，其中写入具有与最终伺服模式相同的分辨率的参考伺服模式，并且将一个或多个空白盘组装在盘驱动器中，其中 伺服信息写入处理通过在跟踪参考盘的轨道的同时使用参考伺服模式同时在包括参考盘的所有盘上写入相同的最终伺服信息来执行。

公开(公告)号：US20050117245A1

公开(公告)日：2005-06-02

申请号：US10986581

申请日：2004-11-12

申请人： Cheol-Hoon Park ,  Kwang-Jo Jung ,  Sang-Hoon Chu ,  Yong-Gwon Lee ,  Chul Park

发明人： Cheol-Hoon Park ,  Kwang-Jo Jung ,  Sang-Hoon Chu ,  Yong-Gwon Lee ,  Chul Park

IPC分类号： G11B21/12 ,  G11B5/54 ,  G11B21/02 ,  G11B5/596

CPC分类号： G11B5/54 ,  G11B21/12

摘要： For unlatching a head within a data storage device, such as a HDD (hard disc drive), a VCM (voice coil motor) amplifier with a switch is used for applying at least one cycle of an acceleration current pulse to a voice coil motor (VCM) for unlatching the head during an acceleration time zone. An analog to digital converter samples a characteristic of the VCM for indicating a speed of the head during the acceleration time zone. An unlatch controller terminates the acceleration time zone when the speed of the head is higher than a threshold speed, for more stable operation of the head but with guarantee of unlatching, regardless of the latch force within the HDD.

摘要翻译： 为了解锁诸如HDD（硬盘驱动器）的数据存储设备内的磁头，具有开关的VCM（音圈电机）放大器用于将至少一个加速电流脉冲的周期施加到音圈电机（ VCM），用于在加速时区内解锁头。 模数转换器对VCM的特性进行采样，以在加速时间段期间指示磁头的速度。 当头部的速度高于阈值速度时，解锁控制器终止加速时间段，以便头部的更稳定的操作，但是保证不解锁，而与HDD内的锁定力无关。

公开(公告)号：US08035914B2

公开(公告)日：2011-10-11

申请号：US12364664

申请日：2009-02-03

申请人： Sang-min Suh ,  Kwang-jo Jung ,  Jeong-heon Han

发明人： Sang-min Suh ,  Kwang-jo Jung ,  Jeong-heon Han

IPC分类号： G11B5/596

CPC分类号： G11B5/5565 ,  G11B5/596

摘要： A hard disk drive is provided. The hard disk drive comprises a plant configured to drive the hard disk drive, a main controller configured to control the plant, and an additional controller connected in parallel with the main controller. A response function in consideration of the plant and the main controller is referred to as a main response function, and a response function in consideration of the plant and the additional controller is referred to as a first response function. The first response function cancels a function value corresponding to a section of the main response function that is associated with disturbance. The response function of the additional controller may be designed using the first response function. The hard disk drive removes a portion of the main response function to minimize the influence of the disturbance.

摘要翻译： 提供了一个硬盘驱动器。 硬盘驱动器包括被配置为驱动硬盘驱动器的设备，被配置为控制工厂的主控制器以及与主控制器并联连接的附加控制器。 考虑到工厂和主控制器的响应功能被称为主要响应功能，并且考虑到工厂和附加控制器的响应功能被称为第一响应功能。 第一响应函数取消与干扰相关联的主响应函数的一部分相对应的函数值。 可以使用第一响应函数来设计附加控制器的响应函数。 硬盘驱动器删除主要响应功能的一部分，以最小化扰动的影响。

公开(公告)号：US08004787B2

公开(公告)日：2011-08-23

申请号：US12354866

申请日：2009-01-16

申请人： Kyu Nam Cho ,  Kwang Jo Jung ,  Jong Ryul Kim ,  Myoung Joo Na

发明人： Kyu Nam Cho ,  Kwang Jo Jung ,  Jong Ryul Kim ,  Myoung Joo Na

IPC分类号： G11B21/12

CPC分类号： G11B5/59688 ,  G11B5/59638 ,  G11B20/1217 ,  G11B20/1816 ,  G11B2020/1238 ,  G11B2020/1281 ,  G11B2220/2516

摘要： A servo track writing method and a servo track write system of a hard disk drive (HDD) using the servo track write method. The servo track writing method includes performing a reference check (R/C) on a first servo pattern which is pre-written on a first surface of a disk, and if the R/C determines that a quality of the first servo pattern is not good, erasing a specific area of the first servo pattern and writing a second servo pattern on a second surface of the disk. Therefore, process time delay factors of a series of rework processes of writing servo patterns on a disk are removed to shorten a process time of the rework processes. In addition, productivity of a HDD is improved.

摘要翻译： 伺服磁道写入方法以及使用伺服磁道写入方式的硬盘驱动器（HDD）的伺服磁道写入系统。 伺服磁道写入方法包括对预先写在磁盘的第一表面上的第一伺服模式执行参考检查（R / C），并且如果R / C确定第一伺服模式的质量不是 良好地擦除第一伺服模式的特定区域并将第二伺服模式写入盘的第二表面上。 因此，删除了在盘上写入伺服模式的一系列返工过程的处理时间延迟因子，以缩短返工过程的处理时间。 另外，提高了HDD的生产率。

公开(公告)号：US20100033864A1

公开(公告)日：2010-02-11

申请号：US12535898

申请日：2009-08-05

申请人： Sang-Hyun PARK ,  Kwang Jo JUNG ,  Da Woon CHUNG ,  Yoon Chul CHO

发明人： Sang-Hyun PARK ,  Kwang Jo JUNG ,  Da Woon CHUNG ,  Yoon Chul CHO

IPC分类号： G11B5/02

CPC分类号： G11B5/865 ,  B82Y10/00 ,  G11B5/59644 ,  G11B5/743 ,  G11B5/82

摘要： A method of forming a servo track on a recording medium includes; forming a magnetic layer, defining a first servo track region having a plurality of first magnetic segments and a second servo track region having a second plurality of magnetic segments in the magnetic layer, applying a first magnetic field to induce a first magnetization direction in the first and second pluralities of magnetic segments, forming first magnetic patterns, each having a first width, and second magnetic patterns, each having a second width different from the first width, on a first side of a substrate, disposing the substrate on the recording medium, such that the first magnetic patterns are aligned in correspondence with the plurality of first magnetic segments and the second magnetic patterns are aligned in correspondence with the plurality of second magnetic segments, and applying a second magnetic field to the recording medium to selectively induce a second magnetization direction into first selected ones of the first plurality of magnetic segments and second selected ones of the second plurality of magnetic segments.

摘要翻译： 在记录介质上形成伺服轨迹的方法包括： 形成磁性层，限定具有多个第一磁性段的第一伺服磁道区域和在磁性层中具有第二多个磁段的第二伺服磁道区域，施加第一磁场以在第一磁体区域中引入第一磁化方向 和第二多个磁段，在基板的第一面上形成每个具有第一宽度的第一磁性图案和分别具有不同于第一宽度的第二宽度的第二磁性图案，将基板设置在记录介质上， 使得第一磁图案对应于多个第一磁性段，并且第二磁性图案对应于多个第二磁性段，并且向记录介质施加第二磁场以选择性地引起第二磁化 方向进入第一多个磁段和第二选择器中的第一选定的磁极段 d个第二多个磁段。

公开(公告)号：US07531983B2

公开(公告)日：2009-05-12

申请号：US11248161

申请日：2005-10-13

申请人： Jun Jeong ,  Kwang-jo Jung ,  Da-woon Chung

发明人： Jun Jeong ,  Kwang-jo Jung ,  Da-woon Chung

IPC分类号： H02P1/16 ,  H02H7/08 ,  H02H7/00

CPC分类号： G11B19/20

摘要： Provided is a method and apparatus for controlling a motor of a disk drive. The method is used to stably control the startup current of a motor by considering a voltage drop and the disk drive uses the method. The method includes managing power-on reset retry information generated during the startup of the motor and determining the startup current of the motor that corresponds to a power-on reset retry count included in the power-on reset retry information.

摘要翻译： 提供了一种用于控制磁盘驱动器的电动机的方法和装置。 该方法用于通过考虑电压降来稳定地控制电动机的启动电流，并且磁盘驱动器使用该方法。 该方法包括管理在电动机起动期间产生的上电复位重试信息，并确定对应于包含在上电复位重试信息中的上电复位重试计数的电动机的启动电流。

公开(公告)号：US07471480B2

公开(公告)日：2008-12-30

申请号：US11282670

申请日：2005-11-21

申请人： Da-woon Chung ,  Kwang-jo Jung ,  Jun Jeong

发明人： Da-woon Chung ,  Kwang-jo Jung ,  Jun Jeong

IPC分类号： G11B21/02 ,  G11B5/584

CPC分类号： G11B5/59666 ,  G11B5/59633

摘要： Provided is a self servo writing method of writing a final servo signal based on a reference servo signal in a hard disk drive, and more particularly, a method of writing a uniform final self servo signal by compensating for a non-uniform width of tracks where a reference servo signal is written, a hard disk drive using the method, and recording medium storing the method. The self servo writing method includes measuring the width of a target track based on the reference servo information, calculating the deviation between the measured width and a target width, and writing the final servo information while following the target track based on the center position of the target track calculated using the reference servo information and the calculated deviation of track width. According to the self servo writing method, the final servo information is written on tracks having a uniform width, even if the reference servo information is written on tracks having a non-uniform width.

摘要翻译： 提供了一种在硬盘驱动器中基于参考伺服信号写入最终伺服信号的自动伺服写入方法，更具体地，涉及一种通过补偿轨迹的不均匀宽度来写入统一的最终自伺服信号的方法， 写入参考伺服信号，使用该方法的硬盘驱动器和存储该方法的记录介质。 自伺服写入方法包括基于参考伺服信息测量目标轨道的宽度，计算测量宽度和目标宽度之间的偏差，并且基于目标轨迹的中心位置跟踪目标轨迹之后写入最终伺服信息 使用参考伺服信息计算的目标轨迹和轨道宽度的计算偏差。 根据自伺服写入方式，即使将参考伺服信息写入具有不均匀宽度的轨道上，最终的伺服信息被写入具有均匀宽度的轨道上。