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1. 发明申请

US20040264028A1 Magnetic disk drive and method for controlling the same 失效
标题翻译：磁盘驱动器及其控制方法
公开(公告)号：US20040264028A1
公开(公告)日：2004-12-30
申请号：US10838520
申请日：2004-05-03
申请人： Hitachi Global Storage Technologies Japan, Ltd.
发明人： Nobuyuki Ishii , Kazuhisa Murakami , Sadahiro Nishida , Takashi Takenaka
IPC分类号： G11B019/02 , G11B021/02
CPC分类号： G11B19/04 , G11B25/043 , G11B33/144
摘要： A magnetic disk drive has an external environment monitoring function. Data is stored on available disk media while the magnetic disk drive is in an unfavorable environment. Under favorable conditions, the data is then moved to a write-restricted area of the media, which was unavailable while the magnetic disk drive was in the unfavorable environment. The magnetic disk drive uses a temperature sensor/atmospheric pressure sensor as a monitoring device and exercises a function, for example, for reading a reference signal stored in a predetermined area of the medium at predefined intervals. When the external environment is favorable for the magnetic disk drive, the present invention can increase the information storage capacity determined appropriate under the current operating conditions.
摘要翻译：磁盘驱动器具有外部环境监控功能。数据存储在可用的磁盘介质上，而磁盘驱动器处于不利的环境中。在有利的条件下，数据然后移动到介质的写入限制区域，当磁盘驱动器处于不利的环境中时，该区域不可用。磁盘驱动器使用温度传感器/大气压力传感器作为监视装置，并且执行例如以预定间隔读取存储在介质的预定区域中的参考信号的功能。当外部环境有利于磁盘驱动器时，本发明可以增加在当前操作条件下适当确定的信息存储容量。

2. 发明申请

US20040246619A1 Repeatable runout estimation in a noisy position error signal environment 有权
标题翻译：在嘈杂的位置误差信号环境中可重复的跳动估计
公开(公告)号：US20040246619A1
公开(公告)日：2004-12-09
申请号：US10455029
申请日：2003-06-05
发明人： Tao Zhang
IPC分类号： G11B005/596 , G11B021/02
CPC分类号： G11B21/106 , G11B5/59627
摘要： A system and method for estimating repeatable runout in a servo control system, such as a disc drive servo loop, is provided. The system includes a Kalman filter that is configured to receive position error signals from the servo control system and to estimate the repeatable runout in the position error signals.
摘要翻译：提供了一种用于估计诸如盘驱动器伺服环路的伺服控制系统中的可重复跳动的系统和方法。该系统包括卡尔曼滤波器，其被配置为从伺服控制系统接收位置误差信号并估计位置误差信号中的可重复跳动。

3. 发明申请

US20040228025A1 Method for obtaining head positions in magnetic data writing apparatus 有权
标题翻译：用于在磁数据写入装置中获得磁头位置的方法
公开(公告)号：US20040228025A1
公开(公告)日：2004-11-18
申请号：US10790237
申请日：2004-03-02
发明人： Takuya Ono , Kiminori Sato
IPC分类号： G11B021/02 , G11B015/12
CPC分类号： G11B5/59633 , G11B5/4976 , G11B5/5578
摘要： A method for obtaining relative positional relationships between a read-only head for reading data from an original disk and servo heads on each surface of magnetic disks (copy disks), in a magnetic data writing apparatus (disk servo writer) that stacks copy disks and an original disk to rotate the disks unitarily. The apparatus includes a rotary positioner on the periphery of the copy disks and a read-only disk, stacking the read-only head and servo heads rotatably. The apparatus causes the servo heads simultaneously to write servo data to respective assigned track ranges. The method includes stacking calibration disks storing servo data in place of the copy disks in a coaxial relation with the read-only head, in advance of writing magnetic data to the copy disks. Using the calibration disks, relative positional relationships are obtained as between the address that the read-only head reads out from the original disk and the addresses that servo heads read out from calibration disks at the same time that the read-only head reads out the address thereof.
摘要翻译：一种在堆叠复制盘的磁数据写入装置（磁盘伺服写入器）中获得用于从原盘读取数据的只读头与磁盘（复制盘）的每个表面上的伺服磁头之间的相对位置关系的方法，一个原始磁盘，以一体旋转磁盘。该装置包括在复制盘周边的旋转定位器和只读盘，可旋转地堆叠只读磁头和伺服磁头。该装置使伺服头同时将伺服数据写入相应的分配的轨道范围。该方法包括在将磁数据写入到复制盘之前，将存储伺服数据的校准盘堆叠在与只读磁头同轴的关系中。使用校准盘，可以在只读头从原盘读出的地址和伺服头从校准盘读出的地址之间获得相对的位置关系，同时只读头读出地址。

4. 发明申请

US20040223251A1 Disk drive system and method for operating same 有权
标题翻译：磁盘驱动器系统及其操作方法
公开(公告)号：US20040223251A1
公开(公告)日：2004-11-11
申请号：US10431336
申请日：2003-05-07
发明人： Gianluca Ventura , Alberto Salina , Alessandra Schenone , Fabio Ramaioli , Luca Anostini
IPC分类号： G11B021/02 , G11B015/46
CPC分类号： G11B5/012 , G11B5/54 , G11B5/553 , G11B21/12 , G11B2005/001
摘要： A disk drive system is described which includes a disk having a magnetic surface and a motor for rotating said disk, a magnetic head being movable relative to said magnetic surface. The motor generates a back electromotive force voltage having different phases and the system comprising a plurality of switches for switching said back electromotive force voltage, a control circuit to control said plurality of switches to supply said back electromotive force voltage to direct said head to a parking position. The system also comprises a comparator adapted to compare a single phase of the back electromotive force voltage with the sum of the other phases of said back electromotive force voltage. The comparator generates an output signal representative of the comparation and the system comprises a logic block controlled by the output signal of the comparator. The logic block is adapted to determine time periods and a control sequence of the switches which is associated to said time periods. The control sequence is supplied to the control circuit so that the last generates control signals to control said plurality of switches.
摘要翻译：描述了一种磁盘驱动器系统，其包括具有磁性表面的盘和用于旋转所述盘的电动机，磁头可相对于所述磁性表面移动。电动机产生具有不同相位的反电动势电压，并且该系统包括用于切换所述反电动势电压的多个开关，控制电路以控制所述多个开关以提供所述反电动势电压以将所述头引导到停车位置。该系统还包括比较器，用于将反电动势电压的单相与所述反电动势电压的其它相位之和进行比较。比较器产生表示比较的输出信号，并且系统包括由比较器的输出信号控制的逻辑块。逻辑块适于确定与所述时间周期相关联的开关的时间段和控制序列。控制序列被提供给控制电路，使得最后一个产生控制信号以控制所述多个开关。

5. 发明申请

US20040218303A1 Magnetic disk device 有权
标题翻译：磁盘装置
公开(公告)号：US20040218303A1
公开(公告)日：2004-11-04
申请号：US10859226
申请日：2004-06-03
发明人： Mikio Tokuyama , Ryoichi Ichikawa , Shigeo Nakamura , Toshihiko Shimizu , Hiromitsu Masuda , Hiromitsu Tokisue
IPC分类号： G11B021/02 , G11B005/02
CPC分类号： G11B5/486 , G11B5/012 , G11B19/02 , G11B19/04 , G11B33/121 , G11B33/14
摘要： A magnetic disk device having a magnetic disk for recording information, a rotary mechanism for rotating the magnetic disk, a magnetic head unit for recording information on the rotating magnetic disk, a slider having mounted thereon the magnetic head unit and flying over the rotating magnetic disk, a magnetic head supporting mechanism for supporting the slider, and a positioning mechanism for setting the magnetic head unit at a predetermined radial position. The magnetic head supporting mechanism has mounted thereon an integrated circuit (IC) for amplifying an information write/read signal of the magnetic head unit, and a control circuit is connected to the IC. A record frequency is controlled according to the radial position of the IC on the magnetic disk by the control circuit.

6. 发明申请

US20040179292A1 Method for constrained implementation of variable data TPI 有权
标题翻译：可变数据TPI的约束实现方法
公开(公告)号：US20040179292A1
公开(公告)日：2004-09-16
申请号：US10387789
申请日：2003-03-13
发明人： Fernando A. Zayas , Patrick Allen Hery
IPC分类号： G11B005/596 , G11B021/02
CPC分类号： G11B5/59611 , G11B5/59633
摘要： The present invention comprises an implementation of a variable data TPI hard drive system. In one embodiment, the system is implemented by configuring a group of servo tracks in a radial direction for a hard drive media. The group is comprised of an integral number of servo tracks that is constant throughout the drive device. The number of data tracks in a group is also an integer but will vary for each surface according to the head used for R/W operations for each media surface. Group boundaries coincide with media surface R/W zone boundaries. The groups are accessed in hard drives having multiple surfaces in a serpentine manner. Data tracks per group are reduced from what is achievable to produce desired target capacities.
摘要翻译：本发明包括可变数据TPI硬盘驱动器系统的实现。在一个实施例中，通过在硬盘驱动器介质的径向方向上配置一组伺服磁道来实现该系统。该组由整个驱动装置中恒定的整体数量的伺服磁道组成。组中的数据轨道数量也是整数，但根据用于每个介质表面的R / W操作的磁头，每个表面将会有所不同。组边界与介质表面R / W区域边界重合。在具有蛇形方式的多个表面的硬盘驱动器中访问这些组。每组的数据轨迹从实现可产生所需目标容量的数据轨迹减少。

7. 发明申请

US20040160696A1 Self-servo writing using recording head micropositioner 有权
标题翻译：使用记录头微定位器进行自伺服写入
公开(公告)号：US20040160696A1
公开(公告)日：2004-08-19
申请号：US10728561
申请日：2003-12-05
发明人： Dallas W. Meyer
IPC分类号： G11B005/596 , G11B021/02
CPC分类号： G11B5/59633 , G11B5/5552
摘要： Servo tracks are written onto different disk surfaces using multiple recording heads within a disk drive without requiring a servo writing machine or clean room conditions. Microactuators in the reference heads in the disk drive are capable of independent motion with respect to one another, which allows the servo tracks to be written to the disk surfaces. The process begins as the recording heads are biased against a crash stop, and then moved to an adjacent track. One of the heads writes a reference track at this adjacent track position when a microactuator of the head is centered. This reference head then follows the reference track with its microactuator centered, while the other recording heads move in the radial direction to write servo information on their respective tracks. Reference tracks are then successively used to write the servo information as the recording heads move in a direction away from the crash stop.
摘要翻译：使用磁盘驱动器内的多个记录头将伺服磁道写入不同的磁盘表面，无需伺服写入机或洁净室条件。磁盘驱动器中的参考磁头中的微致动器能够相对于彼此独立运动，这允许将伺服磁道写入磁盘表面。该过程开始于记录头偏向碰撞停止，然后移动到相邻轨道。当头部的微型致动器居中时，其中一个头在该相邻轨道位置处写入参考轨迹。该参考头然后以其微致动器居中的方式跟随参考轨道，而其他记录头沿径向移动，以在它们各自的轨道上写入伺服信息。随着记录头在远离紧急停止的方向移动时，依次使用参考轨迹来写入伺服信息。

8. 发明申请

US20040160693A1 Method of calibrating magnetic storage medium bi-directional recording head 有权
标题翻译：校准磁存储介质双向记录头的方法
公开(公告)号：US20040160693A1
公开(公告)日：2004-08-19
申请号：US10775406
申请日：2004-02-09
发明人： Dallas W. Meyer
IPC分类号： G11B027/36 , G11B021/02
CPC分类号： G11B5/6005 , G11B5/596 , G11B27/36
摘要： Methods for calibrating and positioning a recording head having a bi-directional transducer for use with a magnetic storage device is disclosed. The bi-directional transducer of the recording head is positioned within the recording head to enable vertical fly height motion and lateral track-to-track motion of the transducer to occur with respect to the surface of a magnetic storage medium within the storage device. Calibration of the bi-directional transducer in the fly height and track-to-track directions enables the transducer to align itself with more precision with the magnetic medium surface, thereby improving data read and write operations for the storage device. Calibration algorithms for fly height and track-to-track adjustment are presented, and possible motion of the bi-directional transducer is resolved into multi-function equations to account for various variables relating to transducer motion.
摘要翻译：公开了用于校准和定位具有用于磁存储装置的双向换能器的记录头的方法。记录头的双向换能器位于记录头内，以使得垂直飞行高度运动和换能器的横向轨迹到轨道运动相对于存储装置内的磁性存储介质的表面发生。双向传感器在飞行高度和轨道到轨道方向上的校准使传感器能够使其与磁性介质表面更精确地对准，从而改善存储设备的数据读取和写入操作。提出了用于飞行高度和轨道到轨道调整的校准算法，双向换能器的可能运动被分解为多功能方程，以解决与换能器运动有关的各种变量。

9. 发明申请

US20040130817A1 Servo data writing device 失效
标题翻译：伺服数据写入装置
公开(公告)号：US20040130817A1
公开(公告)日：2004-07-08
申请号：US10740286
申请日：2003-12-18
申请人： Fujitsu Limited
发明人： Masanori Fukushi , Masaru Ishijima
IPC分类号： G11B005/09 , G11B021/02 , G11B005/596
CPC分类号： G11B5/59638
摘要： The servo data writing device has a simple system and small structure. The servo data writing device, to which a magnetic disk drive unit, which includes: a magnetic disk attached to a spindle; a magnetic head for writing data onto and reading data from the magnetic disk; and an inner actuator for moving an arm holding the magnetic head in the radial direction of the magnetic disk, is attached and which writes servo data in each track of the magnetic disk with the magnetic head, comprises a non-contact position sensor for detecting a position of the arm from outside of the magnetic disk drive unit without contact. The servo data writing device detects the position of the arm by the non-contact position sensor and controls an inner actuator control circuit, which is assembled in the magnetic disk drive unit, so as to position the magnetic head.
摘要翻译：伺服数据写入装置系统简单，结构小巧。伺服数据写入装置，磁盘驱动单元，其包括：附接到主轴的磁盘; 用于将数据写入并从其读取数据的磁头; 以及用于使在磁盘的径向上保持磁头的臂移动的内部致动器，并且在磁盘的每个轨道中用磁头写入伺服数据包括用于检测磁头的非接触位置传感器臂的位置从磁盘驱动单元的外部无接触。伺服数据写入装置通过非接触位置传感器检测臂的位置，并控制组装在磁盘驱动单元中的内部致动器控制电路，以便定位磁头。

10. 发明申请

US20040125494A1 Magnetic disk apparatus and method for monitoring high-frequency oscillation components 失效
标题翻译：用于监测高频振荡元件的磁盘装置及方法
公开(公告)号：US20040125494A1
公开(公告)日：2004-07-01
申请号：US10694535
申请日：2003-10-27
申请人： FUJITSU LIMITED
发明人： Takeshi Hara , Mitsuo Kamimura , Yukio Abe , Yoshinari Higashino , Kunihiro Shimada , Kiyoshi Sakuma , Atsushi Suzuki , Kentaroh Katoh
IPC分类号： G11B021/02 , G11B027/36 , G11B005/596 , G11B005/09
CPC分类号： G11B5/5521 , G11B5/59605 , G11B5/59627 , G11B5/59633
摘要： A magnetic disk apparatus includes a magnetic disk with normal and double servo sectors arranged alternately. If a servo interruption period corresponding to adjacent first servo sectors is a first servo interruption period, then a second servo interruption period that is a servo interruption period corresponding to adjacent first servo sector and second servo sector is equal to or less than half of the first servo interruption period.
摘要翻译：磁盘装置包括具有交替布置的正常和双重伺服扇区的磁盘。如果对应于相邻的第一伺服扇区的伺服中断周期为第一伺服中断周期，则作为与相邻的第一伺服扇区和第二伺服扇区对应的伺服中断周期的第二伺服中断周期等于或小于第一伺服扇区伺服中断周期。

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