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1. 发明授权

US08228628B2 Data storage disk having variable location signal and disk drive using the data storage disk 失效
标题翻译：具有可变位置信号的数据存储盘和使用数据存储盘的磁盘驱动器
公开(公告)号：US08228628B2
公开(公告)日：2012-07-24
申请号：US12429243
申请日：2009-04-24
申请人： Kum-Jung Song , Sang Hoon Chu
发明人： Kum-Jung Song , Sang Hoon Chu
IPC分类号： G11B15/18
CPC分类号： G11B5/59655 , G11B5/59688 , G11B20/1217 , G11B27/322 , G11B2020/1284 , G11B2220/2516
摘要： A hard disk drive includes a magnetic head, at least one disk and a controller. A location signal is recorded on the at least one disk for determining a location of the magnetic head in relation to the at least one disk. The controller controls the location of the magnetic head based on the location signal decoded through the magnetic head. At least one of frequency and amplitude of the location signal is variable.
摘要翻译：硬盘驱动器包括磁头，至少一个磁盘和控制器。位置信号被记录在至少一个盘上，用于确定磁头相对于至少一个盘的位置。控制器基于通过磁头解码的位置信号来控制磁头的位置。位置信号的频率和幅度中的至少一个是可变的。

2. 发明授权

US07715140B2 Method of determining size of error and write control method for hard disc drive, hard disc drive using the write control method, and media storing computer programs for executing the methods 有权
标题翻译：使用写控制方法确定硬盘驱动器的错误大小和写入控制方法的方法，以及存储用于执行方法的计算机程序的介质
公开(公告)号：US07715140B2
公开(公告)日：2010-05-11
申请号：US11442239
申请日：2006-05-30
申请人： Sang-hoon Chu , Cheol-hoon Park
发明人： Sang-hoon Chu , Cheol-hoon Park
IPC分类号： G11B5/09
CPC分类号： G11B5/59688 , G11B20/18 , G11B20/1879 , G11B2020/1281 , G11B2020/183 , G11B2220/2516
摘要： A method of determining a size of an error generated in a servo sector, a write control method of controlling whether to write data to data sectors successive to a servo sector according to the size of the error generated in the servo sector therein, a HDD using the write control method, and a recording media storing computer programs for executing the methods. A method of determining a size of an error generated in a servo sector of a HDD includes: reading servo information from the servo sector in which the error was generated; and determining the size of the error by the number of corresponding bits that differ from each other between the read servo information and a normal servo information.
摘要翻译：一种确定在伺服扇区中产生的误差大小的方法，一种写入控制方法，用于根据在其中的伺服扇区中产生的误差大小来控制是否向与伺服扇区连续的数据扇区写入数据;使用写入控制方法和存储用于执行方法的计算机程序的记录介质。一种确定HDD的伺服扇区中产生的误差大小的方法包括：从产生错误的伺服扇区读取伺服信息; 以及通过读取伺服信息和正常伺服信息之间彼此不同的对应位数确定误差的大小。

3. 发明申请

US20100053799A1 METHOD FOR ESTIMATING POSITION ERROR GAIN FOR HARD DISK DRIVES 失效
标题翻译：用于估计硬盘驱动器的位置误差增益的方法
公开(公告)号：US20100053799A1
公开(公告)日：2010-03-04
申请号：US12203855
申请日：2008-09-03
申请人： Chang Ik Kang , Sang Hoon Chu
发明人： Chang Ik Kang , Sang Hoon Chu
IPC分类号： G11B5/596
CPC分类号： G11B5/59622 , G11B5/59688
摘要： A hard disk drive with a controller that determines a position error signal gain. The position error signal gain is determined from a total servo loop gain and a function that is defined by a slope of a line of A and B servo bits measured at N off-track positions. The function determines an actual plant gain and thus provides a more accurate position error signal gain.
摘要翻译：具有控制器的硬盘驱动器，用于确定位置误差信号增益。位置误差信号增益由总伺服环路增益和由在N个非轨道位置测量的A和B伺服位的行的斜率确定的函数确定。该功能确定实际的工厂增益，从而提供更准确的位置误差信号增益。

4. 发明授权

US07342739B2 Method, medium, and apparatus compensating for torque variations based on temperature 失效
标题翻译：方法，介质和装置补偿基于温度的转矩变化
公开(公告)号：US07342739B2
公开(公告)日：2008-03-11
申请号：US11186756
申请日：2005-07-22
申请人： Cheol-hoon Park , Nam-guk Kim , Sang-hoon Chu
发明人： Cheol-hoon Park , Nam-guk Kim , Sang-hoon Chu
IPC分类号： G11B5/596 , G11B21/02
CPC分类号： G11B5/5565 , G11B5/5534
摘要： A method, medium, and apparatus controlling a hard disk drive, and particularly, embodiments include methods, media, and apparatuses compensating for torque variations with respect to temperature variations in a seek servo operation, compensating for differences between modeling torque constants, used for servo designing, and actual torque constants. The method includes controlling gain of a seek control loop to vary depending on a torque constant temperature compensation value corresponding to a measured temperature of the hard disk drive, the seek control loop generating a seek driving current to be applied to a voice coil in the seek mode.
摘要翻译：一种控制硬盘驱动器的方法，介质和装置，特别地，实施例包括方法，介质和补偿相对于寻道伺服操作中的温度变化的扭矩变化的装置，补偿用于伺服的建模转矩常数之间的差异设计和实际扭矩常数。该方法包括根据与硬盘驱动器的测量温度相对应的转矩恒定温度补偿值来控制寻道控制环路的增益，寻道控制环路产生要在寻道中施加到音圈的寻道驱动电流模式。

5. 发明申请

US20060007591A1 Method, medium, and apparatus compensating for torque variations based on temperature 失效
标题翻译：方法，介质和装置补偿基于温度的转矩变化
公开(公告)号：US20060007591A1
公开(公告)日：2006-01-12
申请号：US11186756
申请日：2005-07-22
申请人： Cheol-hoon Park , Nam-guk Kim , Sang-hoon Chu
发明人： Cheol-hoon Park , Nam-guk Kim , Sang-hoon Chu
IPC分类号： G11B5/596 , G11B21/02
CPC分类号： G11B5/5565 , G11B5/5534
摘要： A method, medium, and apparatus controlling a hard disk drive, and particularly, embodiments include methods, media, and apparatuses compensating for torque variations with respect to temperature variations in a seek servo operation, compensating for differences between modeling torque constants, used for servo designing, and actual torque constants. The method includes controlling gain of a seek control loop to vary depending on a torque constant temperature compensation value corresponding to a measured temperature of the hard disk drive, the seek control loop generating a seek driving current to be applied to a voice coil in the seek mode.
摘要翻译：一种控制硬盘驱动器的方法，介质和装置，特别地，实施例包括方法，介质和补偿相对于寻道伺服操作中的温度变化的扭矩变化的装置，补偿用于伺服的建模转矩常数之间的差异设计和实际扭矩常数。该方法包括根据与硬盘驱动器的测量温度相对应的转矩恒定温度补偿值来控制寻道控制环路的增益，寻道控制环路产生要在寻道中施加到音圈的寻道驱动电流模式。

6. 发明授权

US06967809B2 Method and apparatus providing spiral servo control for skewless read/writes in a hard disk drive 失效
标题翻译：为硬盘驱动器中的无偏差读/写提供螺旋伺服控制的方法和装置
公开(公告)号：US06967809B2
公开(公告)日：2005-11-22
申请号：US10202780
申请日：2002-07-24
申请人： Gyu Taek Kim , YoungDug Jung , Yeong Kyun (John) Lee , Sang Hoon Chu
发明人： Gyu Taek Kim , YoungDug Jung , Yeong Kyun (John) Lee , Sang Hoon Chu
IPC分类号： G11B21/10 , G11B5/596
CPC分类号： G11B5/59605 , G11B5/59633
摘要： The invention provides magnetic disks with the ability for consecutive tracks to be read or written continuously, removing the traversal of the gap between tracks which degrades bandwidth delivery performance. The invention includes a disk surface formatted with tracks, and sectors within these tracks, which vary in radius. The ending radius of a sector differs significantly from its starting radius. The ending radius of the last sector of one track is very close to the starting radius of its successor track, providing a spiral arrangement of tracks, each possessing a fixed number of sectors, and supporting continuous accessing of successive tracks.
摘要翻译：本发明提供具有能够连续读取或写入连续轨道的能力的磁盘，从而消除磁道之间的间隙的遍历，这降低了带宽传送性能。本发明包括用轨道格式化的盘表面，以及这些轨道内的扇区，半径不同。扇区的结束半径与起始半径有显着差异。一个轨道的最后一个扇区的结束半径非常接近其后续轨道的起始半径，提供一个螺旋排列的轨道，每个轨道具有固定数量的扇区，并支持连续轨道的连续访问。

7. 发明申请

US20050117245A1 Apparatus and method for unlatching a head within a data storage device 失效
标题翻译：用于在数据存储设备内解锁头的装置和方法
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。

8. 发明授权

US06744590B2 Seek trajectory adaptation in sinusoidal seek servo hard disk drives 失效
标题翻译：寻求正弦寻求伺服硬盘驱动器中的轨迹适应
公开(公告)号：US06744590B2
公开(公告)日：2004-06-01
申请号：US09859836
申请日：2001-05-16
申请人： Sang Hoon Chu , Ju Il Lee , Jun Seok Shim , Won Goo Kim
发明人： Sang Hoon Chu , Ju Il Lee , Jun Seok Shim , Won Goo Kim
IPC分类号： G11B5596
CPC分类号： G11B5/5547
摘要： A method, apparatus, and computer program product for a hard disk drive servomechanism. In one embodiment, the apparatus comprises a disk which has a surface, a spindle motor that rotates the disk, a transducer which can write information onto the disk and read information from the disk, and an actuator arm that can move the transducer across the surface of the disk. The apparatus further includes a controller. The controller can determine a seek length from a first track to a second track, determine a seek time based on the seek length, scale the seek time in response to a velocity error between a calculated velocity and a design velocity for the seek length, and control the actuator arm to move the transducer across the disk surface from the first track to the second track using an acceleration trajectory.
摘要翻译：一种用于硬盘驱动器伺服机构的方法，装置和计算机程序产品。在一个实施例中，该装置包括具有表面的盘，旋转盘的主轴电机，可以将信息写入盘并从盘读取信息的换能器以及能够使换能器穿过表面移动的致动器臂的磁盘。该装置还包括控制器。控制器可以确定从第一轨道到第二轨道的寻道长度，基于寻道长度确定寻道时间，响应于搜索长度的计算速度和设计速度之间的速度误差来缩放搜索时间;以及控制致动器臂以使用加速轨迹将换能器从第一轨道移动到盘表面。

9. 发明授权

US07813076B2 Method for estimating position error gain for hard disk drives 失效
标题翻译：估计硬盘驱动器位置误差增益的方法
公开(公告)号：US07813076B2
公开(公告)日：2010-10-12
申请号：US12203855
申请日：2008-09-03
申请人： Chang Ik Kang , Sang Hoon Chu
发明人： Chang Ik Kang , Sang Hoon Chu
IPC分类号： G11B5/596
CPC分类号： G11B5/59622 , G11B5/59688
摘要： A hard disk drive with a controller that determines a position error signal gain. The position error signal gain is determined from a total servo loop gain and a function that is defined by a slope of a line of A and B servo bits measured at N off-track positions. The function determines an actual plant gain and thus provides a more accurate position error signal gain.
摘要翻译：具有控制器的硬盘驱动器，用于确定位置误差信号增益。位置误差信号增益由总伺服环路增益和由在N个非轨道位置测量的A和B伺服位的行的斜率确定的函数确定。该功能确定实际的工厂增益，从而提供更准确的位置误差信号增益。

10. 发明授权

US07777982B2 Disturbance compensation determination apparatus, a related method, a computer-readable medium storing a computer program related to the method, and a disk drive comprising the apparatus 有权
标题翻译：干扰补偿确定装置，相关方法，存储与该方法相关的计算机程序的计算机可读介质和包括该装置的盘驱动器
公开(公告)号：US07777982B2
公开(公告)日：2010-08-17
申请号：US11772959
申请日：2007-07-03
申请人： Nam-guk Kim , Sung-won Park , Sang-hoon Chu
发明人： Nam-guk Kim , Sung-won Park , Sang-hoon Chu
IPC分类号： G11B5/596
CPC分类号： G11B19/042 , G11B5/5582 , G11B5/596
摘要： A disturbance compensation determination apparatus, a related method, a computer readable medium storing a computer program related to the method, and a disk drive comprising the apparatus are provided. The disturbance compensation determination apparatus includes a disturbance observer (DOB) receiving a control input signal and a servo output signal of a plant, wherein the DOB calculates and outputs a current estimated disturbance value. The apparatus also includes a disturbance evaluation unit selectively changing a current disturbance compensation (DC) mode, wherein selectively changing the current DC mode comprises evaluating an accumulated estimated disturbance value in accordance with a condition corresponding to the current DC mode. In addition, the apparatus includes a switching unit selectively providing the current estimated disturbance value to a control loop of the plant in accordance with the current DC mode as selectively changed by the disturbance evaluation unit.
摘要翻译：提供了一种干扰补偿确定装置，相关方法，存储与该方法相关的计算机程序的计算机可读介质和包括该装置的盘驱动器。干扰补偿确定装置包括接收工厂的控制输入信号和伺服输出信号的干扰观测器（DOB），其中DOB计算并输出当前估计的扰动值。该装置还包括选择性地改变电流干扰补偿（DC）模式的干扰评估单元，其中选择性地改变当前DC模式包括根据对应于当前DC模式的条件来评估累积的估计干扰值。此外，该装置包括切换单元，其根据由干扰评估单元选择性地改变的当前DC模式，选择性地将电流估计干扰值提供给设备的控制回路。

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