公开(公告)号：US06829115B2

公开(公告)日：2004-12-07

申请号：US10171133

申请日：2002-06-13

Applicant: Xiong Liu ,  ChoonKiat Lim ,  YongJie Tang ,  Pow-Hing Yong

Inventor： Xiong Liu ,  ChoonKiat Lim ,  YongJie Tang ,  Pow-Hing Yong

IPC: G11B2736

CPC classification number: G11B5/59627 ,  G11B7/0953 ,  G11B19/20 ,  G11B21/106 ,  G11B33/08

Abstract: An apparatus and method of indirectly measuring half frequency whirl in a spindle motor having a rotor adapted to rotate a disc having a track which is followed by a transducer head that is actuated by a control system is provided. Vibration signals produced at the transducer head while the transducer head follows the track are detected. The half frequency whirl is determined as a function of the detected vibration signals.

Abstract translation: 提供了一种间接测量具有转子的主轴电动机中的半频旋转的装置和方法，所述转子适于旋转具有由控制系统致动的传感器头跟随的轨道的盘。 检测在换能器头跟随轨道时在换能器头处产生的振动信号。 根据检测到的振动信号确定半频旋转。

公开(公告)号：US06809893B2

公开(公告)日：2004-10-26

申请号：US09770988

申请日：2001-01-26

Applicant: Takuya Uzumaki ,  Kazumasa Shimoda ,  Hiroto Takeshita ,  Atsushi Tanaka

Inventor： Takuya Uzumaki ,  Kazumasa Shimoda ,  Hiroto Takeshita ,  Atsushi Tanaka

IPC: G11B2736

CPC classification number: G11B27/36 ,  G11B5/02 ,  G11B5/09 ,  G11B20/10009 ,  G11B2005/001 ,  G11B2020/183 ,  G11B2220/20 ,  G11B2220/216

Abstract: A storage system has a storage medium, a head, and a control unit for carrying out refresh processing. A refresh operation extracts data that needs to be refreshed by measuring the read-out output level of target data. Then, data requiring refresh is re-recorded to the storage medium by the head. Because an actual data level is observed, it is possible to accurately detect refresh target data, and because there is no need for a reference area, it is possible to prevent a reduction in storage capacity.

Abstract translation: 存储系统具有用于进行刷新处理的存储介质，头部和控制单元。 刷新操作通过测量目标数据的读出输出级别来提取需要刷新的数据。 然后，需要刷新的数据由头部重新记录到存储介质。 由于观察到实际的数据电平，因此可以精确地检测刷新目标数据，并且由于不需要参考区域，因此可以防止存储容量的降低。

公开(公告)号：US06785073B2

公开(公告)日：2004-08-31

申请号：US09844192

申请日：2001-04-27

Applicant: ShuangQuan Min ,  KianKeon Ooi ,  YangQuan Chen ,  Ricky Wei Watt Yeo ,  WeiSung Lee ,  BengWee Quak

Inventor： ShuangQuan Min ,  KianKeon Ooi ,  YangQuan Chen ,  Ricky Wei Watt Yeo ,  WeiSung Lee ,  BengWee Quak

IPC: G11B2736

CPC classification number: G11B5/5582

Abstract: Written-in runout due to vibration of the cage of a spindle motor of a disc drive is detected by identifying an initial cage frequency value of the motor. A written-in magnitude of successive servo burst closures, D(nc), is read over a plurality of tracks, and a maximum servo burst closure D(ncp) is identified from the plurality of read servo bursts. A magnitude of the cage frequency at a servo sector n0 is calculated based on a difference between the read magnitudes of the servo burst closures at servo sectors nc and nc+1, and a phase of the cage frequency is calculated based on the magnitude of the written-in cage frequency at servo sector n0. The profile, in the form of cage frequency, maximum servo burst closure magnitude, and initial phase, is stored in a memory or table for each of a plurality of radial zones of tracks. The profile is combined with a position error signal and applied to the controller in a feed forward scheme to adjust the position of the head based on the written-in runout.

Abstract translation: 通过识别电动机的初始笼频率来检测由于磁盘驱动器的主轴电机的保持架的振动而产生的写入跳动。 在多个磁道上读取连续的伺服脉冲闭合D（nc）的写入幅度，并且从多个读取的伺服脉冲串中识别最大伺服脉冲串闭合D（ncp）。 基于伺服扇区nc和nc + 1处的伺服脉冲串闭合的读取幅度之间的差来计算伺服扇区n0处的笼频率的大小，并且基于 在伺服扇区n0上写入笼式频率。 笼形频率，最大伺服脉冲串闭合幅度和初始相位的形式的轮廓存储在轨道的多个径向区域中的每一个的存储器或表中。 该配置文件与位置误差信号组合，并以前馈方案应用于控制器，以基于写入跳动来调整头部的位置。

公开(公告)号：US06768708B1

公开(公告)日：2004-07-27

申请号：US09544903

申请日：2000-04-07

Applicant: Hitoshi Ogata ,  Takao Terashima ,  Tomohiro Yamada

Inventor： Hitoshi Ogata ,  Takao Terashima ,  Tomohiro Yamada

IPC: G11B2736

CPC classification number: G11B19/022 ,  G11B19/04 ,  G11B20/10527 ,  G11B27/329 ,  G11B27/34 ,  G11B27/36 ,  G11B33/10 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2525 ,  G11B2220/2529 ,  G11B2220/2545 ,  G11B2220/2562

Abstract: A signal recording apparatus including a battery voltage detecting circuit. The battery voltage detecting circuit detects the voltage value of a battery. When a record button provided on an operation panel is pressed, a syscon detects, for 160 ms, voltage values given from the battery voltage detecting circuit. The detected voltage values are stored to a DRAM. An average calculated of the voltage values of for 160 ms by using the DRAM. The syscon compares the averaged voltage value with a threshold A that makes it possible for recording for one disk. When the averaged voltage value is equal to or higher than the threshold A, the syscon directly starts recording. When the averaged voltage value is lower than the threshold A, an insufficient remaining capacity of the battery is displayed on a liquid crystal panel by a display controller.

Abstract translation: 一种包括电池电压检测电路的信号记录装置。 电池电压检测电路检测电池的电压值。 当按下操作面板上提供的记录按钮时，syscon会从电池电压检测电路检测160ms的电压值。 检测到的电压值被存储到DRAM。 通过使用DRAM计算出160ms的电压值的平均值。 syscon将平均电压值与阈值A进行比较，可以为一个磁盘录制。 当平均电压值等于或高于阈值A时，syscon直接开始录制。 当平均电压值低于阈值A时，通过显示控制器在液晶面板上显示电池的剩余容量不足。

公开(公告)号：US06757119B2

公开(公告)日：2004-06-29

申请号：US09896029

申请日：2001-06-29

Applicant: SoonWah Leow ,  KokSeng Lim ,  TienHiong Lee ,  KokHoe Chia ,  TeckKhoon Lim

Inventor： SoonWah Leow ,  KokSeng Lim ,  TienHiong Lee ,  KokHoe Chia ,  TeckKhoon Lim

IPC: G11B2736

CPC classification number: G11B20/1816 ,  G11B5/012 ,  G11B7/0079 ,  G11B20/1258 ,  G11B27/36 ,  G11B2220/20

Abstract: A recording surface is segmented into a plurality of radial zones each containing a plurality of concentric tracks on which data may be recorded. The recording surface is initially formatted with a data frequency for each zone such that all of the zones have substantially the same data density. The data frequency is reduced for a first zone whose error rate is initially less than the predetermined error rate so that the first zone exhibits an error rate meeting the predetermined error rate. The data frequency for a second zone whose data transfer error factor initially exceeds the predetermined error rate is increased to restore any loss of storage capacity of the recording surface due to the reduced data frequency in the first zone. As a result, the data density in the first zone is substantially less than a nominal data density and the data density in a second zone is substantially greater than the nominal data density. The data storage capacity of the recording surface is at least as great as a minimum data storage capacity.

Abstract translation: 记录表面被分割成多个径向区域，每个径向区域包含可记录数据的多个同心轨道。 记录表面最初被格式化为每个区域的数据频率，使得所有区域具有基本上相同的数据密度。 对于错误率最初小于预定错误率的第一区域，数据频率降低，使得第一区域呈现满足预定错误率的错误率。 其数据传输误差因子最初超过预定误差率的第二区的数据频率增加，以恢复记录表面的存储容量的任何损失，这是由于第一区中的数据频率降低。 结果，第一区域中的数据密度基本上小于标称数据密度，并且第二区域中的数据密度基本上大于标称数据密度。 记录表面的数据存储容量至少与最小数据存储容量一样大。

公开(公告)号：US06738333B1

公开(公告)日：2004-05-18

申请号：US09583448

申请日：2000-05-30

Applicant: Daniel R. Zaharris ,  Lane W. Lee ,  Stanton M. Keeler ,  Michael B. Propps

Inventor： Daniel R. Zaharris ,  Lane W. Lee ,  Stanton M. Keeler ,  Michael B. Propps

IPC: G11B2736

CPC classification number: G11B20/00086 ,  G11B20/1217 ,  G11B20/18

Abstract: A data storage disk includes a writeable area that allows a user to write data, wherein the data files are written from the outside diameter towards the inside diameter of the writeable area, while file system information is written from the inside diameter towards the outside diameter of the writeable area. This optimizes the use of the writeable area, whether a large number of small data files or a small number of large data files are being stored. To further optimize the use of the writeable area, information may be stored in two or more different error correction code (ECC) block sizes. Thus, information, such as the file system attributes and linking sectors, which contains few bytes may be stored in the smaller ECC block size, while the data may be stored in the larger ECC block size. The data storage disk, may also include a mastered content area.

Abstract translation: 数据存储盘包括允许用户写入数据的可写入区域，其中数据文件从外径朝向可写入区域的内径写入，而文件系统信息从内径向外部直径写入 可写区。 这可以优化可写区域的使用，无论是大量的小数据文件还是少量的大数据文件都被存储。 为了进一步优化可写入区域的使用，可以将信息存储在两个或更多个不同的纠错码（ECC）块大小中。 因此，可以以更小的ECC块大小存储包含少量字节的诸如文件系统属性和链接扇区的信息，而数据可以以较大的ECC块大小存储。 数据存储盘还可以包括已掌握的内容区域。

公开(公告)号：US06735027B2

公开(公告)日：2004-05-11

申请号：US09089053

申请日：1998-06-02

Applicant: Dave Helsel ,  James Aralis ,  Dino J. Pollalis

Inventor： Dave Helsel ,  James Aralis ,  Dino J. Pollalis

IPC: G11B2736

CPC classification number: G11B21/21 ,  G11B5/6011 ,  G11B33/10

Abstract: The present invention includes a circuit and method for determining fly height based upon the PW50. A signal is used to provide a measure of PW50 by detecting the peak height and the area of the signal. The ratio of the peak height and area provides an indication of PW50 and correspondingly, the fly height.

Abstract translation: 本发明包括基于PW50确定飞行高度的电路和方法。 信号用于通过检测峰值高度和信号面积来提供PW50的测量值。 峰高和面积的比率提供PW50的指示，并相应地提供飞行高度。

公开(公告)号：US06728050B2

公开(公告)日：2004-04-27

申请号：US09874771

申请日：2001-06-05

Applicant: David Robert Wilson

Inventor： David Robert Wilson

IPC: G11B2736

CPC classification number: G11B19/04 ,  G11B5/012 ,  G11B27/36 ,  G11B2220/20

Abstract: The present invention offers an apparatus and associated method to detect a skip write error occurring during a data storage device write process. The capacitance between the read/write head and the disc surface, called the “parasitic capacitance,” is used to determine whether a skip write error has occurred. The amount of parasitic capacitance is determined by monitoring the frequency change at the input of an oscillator of test circuit. A change in the read/write head fly height causes a change in the parasitic capacitance and a corresponding change in the frequency. The parasitic capacitance is compared to a threshold limit to determine whether a skip write error has occurred. The write operation is suspended when a skip write error is detected and a rewrite procedure is instituted.

Abstract translation: 本发明提供了一种用于检测在数据存储设备写入处理期间发生的跳过写入错误的装置和相关联的方法。 读/写头和盘表面之间的电容称为“寄生电容”，用于确定是否发生了跳过写入错误。 通过监测测试电路的振荡器的输入端的频率变化来确定寄生电容量。 读/写头飞高的变化导致寄生电容的变化和频率的相应变化。 将寄生电容与阈值限制进行比较，以确定是否发生了跳过写入错误。 当检测到跳过写入错误并建立重写过程时，写入操作被暂停。

公开(公告)号：US06717760B2

公开(公告)日：2004-04-06

申请号：US10102651

申请日：2002-03-22

Applicant: Takehiko Hamaguchi ,  Futoshi Tomiyama ,  Hideki Zaitsu ,  Hisashi Takano

Inventor： Takehiko Hamaguchi ,  Futoshi Tomiyama ,  Hideki Zaitsu ,  Hisashi Takano

IPC: G11B2736

CPC classification number: B82Y10/00 ,  B82Y25/00 ,  G11B5/012 ,  G11B5/3909 ,  G11B5/5552 ,  G11B5/59611 ,  G11B2005/001 ,  G11B2005/0016

Abstract: A plurality of patterns are formed beforehand so that each of those patterns is deviated slightly from another in each sector in the track width direction, then the pattern is followed up, thereby obtaining both full-track profile and micro-track profile. A variation of a position signal is detected from this profile, thereby creating a table for correcting the non-linearity error of the position signal. Consequently, the distribution of the write/read-back property is measured, thereby enabling the track density to be improved. Furthermore, a variation of the position signal caused by a property variation of the head read-back element is detected and corrected, thereby enabling a high reliability and a high track density to be realized for the object magnetic recording disk apparatus.

Abstract translation: 预先形成多个图案，使得这些图案中的每一个在轨道宽度方向上在每个扇区中与另一个图案稍微偏离，然后跟踪图案，从而获得全轨道轮廓和微轨道轮廓。 从该轮廓检测位置信号的变化，从而创建用于校正位置信号的非线性误差的表格。因此，测量写入/读回属性的分布，从而使轨道密度为 改进。 此外，检测和校正由头读回元件的特性变化引起的位置信号的变化，从而能够实现对象磁记录盘装置的高可靠性和高轨道密度。

公开(公告)号：US06717758B2

公开(公告)日：2004-04-06

申请号：US09854719

申请日：2001-05-15

Applicant: Chad Adams ,  Eric Ryon Peters ,  Robert L. Short ,  Mark Reimann ,  Daniel D. Rochat

Inventor： Chad Adams ,  Eric Ryon Peters ,  Robert L. Short ,  Mark Reimann ,  Daniel D. Rochat

IPC: G11B2736

CPC classification number: G11B20/1217 ,  G11B2020/1232 ,  G11B2020/1285 ,  G11B2220/2537

Abstract: A disk is manufactured having a reduced capacity based on a quantity of addressable and non-addressable portions. The method of formatting the disk comprises identifying a first quantity of the storage portions; and labeling the first quantity of storage portions as non-addressable storage portions such that the non-addressable storage portions cannot be accessed by a user or a disk drive. The first quantity of storage portions may include addressable portions designated as non-addressable portions.

Abstract translation: 基于可寻址和不可寻址部分的数量，制造具有减小的容量的盘。 格式化盘的方法包括：识别第一数量的存储部分; 以及将第一数量的存储部分标记为不可寻址存储部分，使得不可寻址存储部分不能被用户或磁盘驱动器访问。 第一数量的存储部分可以包括被指定为不可寻址部分的寻址部分。