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1.发明授权Disk drive comprising a spindle motor employing anionic/cationic lubricant to reduce disk surface potential 有权磁盘驱动器包括使用阴离子/阳离子润滑剂以减小磁盘表面电位的主轴电动机公开(公告)号：US07180703B1
公开(公告)日：2007-02-20
申请号：US10845863
申请日：2004-05-15
申请人： Jai N. Subrahmanyam , Jack M. Chue
发明人： Jai N. Subrahmanyam , Jack M. Chue
IPC分类号： G11B33/14
CPC分类号： G11B19/022 , G11B25/043
摘要： A disk drive is disclosed comprising a disk, a head actuated over the disk, and a spindle motor for rotating the disk. The spindle motor comprises a rotating component, a stationary component, and a first and second bearing assembly disposed between the rotating component and stationary component for rotating the rotating component about the stationary component, wherein the disk is attached to the rotating component. The bearing assemblies comprise a stationary component surface and a rotating component surface having a lubricant disposed there between. The first bearing assembly employs an anionic lubricant such that a first voltage forms between the stationary component surface and the rotating component surface when the rotating component rotates about the stationary component. The second bearing assembly employs a cationic lubricant such that a second voltage forms between the stationary component surface and the rotating component surface when the rotating component rotates about the stationary component. A polarity of the second voltage being opposite a polarity of the first voltage to thereby reduce the potential at the disk surface.
摘要翻译： 公开了一种磁盘驱动器，其包括盘，在盘上致动的头和用于旋转盘的主轴电机。 主轴电动机包括旋转部件，静止部件以及设置在旋转部件和固定部件之间的第一和第二轴承组件，用于围绕静止部件旋转旋转部件，其中盘附接到旋转部件。 轴承组件包括固定部件表面和具有设置在其间的润滑剂的旋转部件表面。 第一轴承组件采用阴离子润滑剂，使得当旋转部件围绕固定部件旋转时，在固定部件表面和旋转部件表面之间形成第一电压。 第二轴承组件使用阳离子润滑剂，使得当旋转部件围绕固定部件旋转时，在固定部件表面和旋转部件表面之间形成第二电压。 第二电压的极性与第一电压的极性相反，从而减小磁盘表面的电位。
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2.发明授权Servo writing a disk drive by writing discontinuous spiral tracks to prevent overheating 有权通过写入不连续的螺旋轨道来编写磁盘驱动器，以防止过热公开(公告)号：US07330327B1
公开(公告)日：2008-02-12
申请号：US10875637
申请日：2004-06-23
CPC分类号： G11B5/59633 , G11B5/59638 , G11B5/59661 , G11B5/59688
摘要： A method of servo writing a disk for use in a disk drive is disclosed by writing discontinuous spiral tracks on the disk to protect against overheating the head and/or preamp circuitry. A write clock is synchronized to the rotation of the disk, and a plurality of discontinuous spiral tracks are written on the disk. Each discontinuous spiral track is written at a predetermined circular location determined from the write clock, and each discontinuous spiral track comprises a plurality of segments separated by gaps. Each segment comprises a high frequency signal interrupted at a predetermined interval by a sync mark.
摘要翻译： 通过在盘上写入不连续的螺旋轨道来公开用于磁盘驱动器的伺服写入磁盘的方法，以防止头部和/或前置放大器电路过热。 写时钟与盘的旋转同步，并且多个不连续的螺旋轨道被写入盘上。 每个不连续螺旋轨迹被写入从写入时钟确定的预定的圆形位置，并且每个不连续的螺旋轨迹包括由间隙分开的多个段。 每个段包括通过同步标记以预定间隔中断的高频信号。
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3.发明授权Slider with a slider ground pad electrically connected to write head poles and read head shields 有权带滑块接地垫的滑块电连接到写头磁头和读头屏蔽公开(公告)号：US07027264B1
公开(公告)日：2006-04-11
申请号：US10698655
申请日：2003-10-31
IPC分类号： G11B5/60
CPC分类号： G11B5/6005 , G11B5/40 , G11B5/4853
摘要： According to an aspect of the present invention, there is provided a slider for a disk drive. The slider includes a slider body including a slider body outer surface. The slider further includes an inductive write head including main and return poles. The slider further includes a slider ground pad disposed at the slider body outer surface. The slider ground pad is disposed in electrical communication with the main and return poles for electrically grounding the main and return poles.
摘要翻译： 根据本发明的一个方面，提供了一种用于磁盘驱动器的滑块。 滑块包括滑块主体，其包括滑块体外表面。 滑块还包括一个包括主极和返回极的感应写头。 滑块还包括设置在滑块主体外表面处的滑块接地垫。 滑块接地焊盘设置成与主极和返回极电连通，用于使主极和返回极电接地。
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4.发明授权System and method for processing track identifier errors to mitigate head instability in data storage devices 有权用于处理跟踪标识符错误以缓解数据存储设备中的头部不稳定性的系统和方法公开(公告)号：US07184230B1
公开(公告)日：2007-02-27
申请号：US10160954
申请日：2002-06-01
IPC分类号： G11B5/02
CPC分类号： G11B5/59605 , G11B5/5547
摘要： A system and method for processing track identifier errors to mitigate head instability in data storage devices is disclosed. The system and method includes computing a track id differential between an expected track id and a received track id, encoding the expected track id and the received track id, initiating a first action if the track id differential exceeds a pre-determined threshold and the encoded expected track id varies from the encoded received track id by a pre-configured number of bits, and initiating a second action if the track id differential does not exceed the pre-determined threshold or the encoded expected track id does not vary from the encoded received track id by a pre-configured number of bits.
摘要翻译： 公开了一种用于处理磁道标识符错误以减轻数据存储设备中的磁头不稳定性的系统和方法。 该系统和方法包括：计算预期轨迹id和接收轨迹id之间的轨道ID差分，编码预期轨道id和接收轨道id，如果轨道id差异超过预定阈值则启动第一动作， 预期轨迹id与编码的接收轨道id相差预先配置的比特数，并且如果轨道id差异不超过预定阈值或编码的预期轨道id不与编码的接收 轨道ID由预先配置的位数。
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5.发明授权Disk drive having servo sectors that store repeatable runout correction values and related error correction code data 有权具有伺服扇区的磁盘驱动器，其存储可重复的跳动校正值和相关的纠错码数据公开(公告)号：US07027256B1
公开(公告)日：2006-04-11
申请号：US10377078
申请日：2003-02-28
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： A magnetic disk drive having a reduction in repeatable runout (RRO) effects is disclosed. The disk drive has a head disk assembly (HDA) and a sampled servo controller. The HDA includes a rotating magnetic disk, an actuator, and a transducer head. The magnetic disk has a plurality of embedded servo sectors for storing servo information including repeatable runout (RRO) cancellation values and RRO cancellation value error correction code (ECC) data at a servo data rate. The RRO cancellation value ECC data is only for detecting and correcting errors in the RRO cancellation values. In between the embedded servo sectors are data sectors for storing user data at a user data rate that is different from the servo data rate. The actuator positions the transducer head in response to a control effort signal generated by the sampled servo controller based on the servo information.
摘要翻译： 公开了具有减少可重复跳动（RRO）效应的磁盘驱动器。 磁盘驱动器具有头盘组件（HDA）和采样伺服控制器。 HDA包括旋转磁盘，致动器和换能器头。 磁盘具有多个嵌入式伺服扇区，用于以伺服数据速率存储包括可重复跳动（RRO）抵消值和RRO抵消值纠错码（ECC）数据的伺服信息。 RRO抵消值ECC数据仅用于检测和纠正RRO抵消值中的错误。 在嵌入式伺服扇区之间是用于以与伺服数据速率不同的用户数据速率存储用户数据的数据扇区。 执行器响应于由采样的伺服控制器基于伺服信息产生的控制力信号来定位换能器头。
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公开(公告)号：US06801402B1
公开(公告)日：2004-10-05
申请号：US10286170
申请日：2002-10-31
IPC分类号： G11B540
CPC分类号： G11B5/4853 , G11B5/40 , G11B5/484 , G11B5/486 , H05K1/0259 , H05K1/056 , H05K1/167
摘要： A Head Gimbal Assembly (HGA) for use in a disk drive and further includes a head having a read element and a write element; and a Trace Gimbal Assembly (TGA) attached to the head. The TGA includes a conductor array having a first end connected to the read element and the write element and a distal end for connecting the read element and the write element to a signal processing circuit, a conductive substrate supporting the head and the conductor array and a dielectric layer disposed between the conductor array and the conductive substrate. The TGA further includes a shunt connected at the distal end for shunting the read element; and an anti-static coating, covering a substantial portion of the conductor array for neutralizing electrostatic charge accumulation on the conductor array.
摘要翻译： 一种用于磁盘驱动器的磁头万向节组件（HGA），还包括具有读取元件和写入元件的磁头; 和一个跟踪云台组件（TGA）。 TGA包括具有连接到读取元件和写入元件的第一端的导体阵列和用于将读取元件和写入元件连接到信号处理电路的远端，支撑头部和导体阵列的导电基底和 布置在导体阵列和导电基底之间的介电层。 TGA还包括在远端连接用于分流读取元件的分流器; 以及防静电涂层，其覆盖导体阵列的大部分，以中和导体阵列上的静电电荷积聚。
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7.发明授权Head stack assembly including a trace suspension assembly backing layer and a ground trace for grounding a slider 有权头部堆叠组件包括一个跟踪悬挂组件背衬层和用于接地滑块的接地轨迹公开(公告)号：US07099117B1
公开(公告)日：2006-08-29
申请号：US10676537
申请日：2003-09-30
CPC分类号： G11B5/486 , G11B5/4806
摘要： A head stack assembly includes a flex cable assembly. The head stack assembly further includes an actuator arm and a load beam coupled to the actuator arm. The head stack assembly further includes a trace suspension assembly backing layer coupled to the load beam and including a gimbal. The head stack assembly further includes a dielectric layer disposed upon the trace suspension assembly backing layer. The head stack assembly further includes a slider supported by the gimbal. The head stack assembly further includes a ground trace disposed upon the dielectric layer with the dielectric layer between the ground trace and the trace suspension assembly backing layer. The ground trace extends along the actuator arm and is electrically connected to the slider and the flex cable assembly for grounding the slider to the flex cable assembly.
摘要翻译： 磁头堆叠组件包括柔性电缆组件。 头部堆叠组件还包括致动器臂和联接到致动器臂的负载梁。 头部堆叠组件还包括耦合到负载梁并包括万向节的轨迹悬挂组件背衬层。 顶部堆叠组件还包括设置在微量悬浮组件背衬层上的电介质层。 头部堆叠组件还包括由万向节支撑的滑块。 磁头堆叠组件还包括设置在电介质层上的接地轨迹，介电层位于接地轨迹和迹线悬挂组件背衬层之间。 接地迹线沿着致动器臂延伸并且电连接到滑块和柔性电缆组件，用于将滑块接地到柔性电缆组件。
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8.发明授权公开(公告)号：US07099095B1
公开(公告)日：2006-08-29
申请号：US10769143
申请日：2004-01-30
申请人： Jai N. Subrahmanyam , Jack M. Chue
发明人： Jai N. Subrahmanyam , Jack M. Chue
IPC分类号： G11B5/09
CPC分类号： G11B20/18 , G11B5/59616 , H03M5/00 , H03M7/16
摘要： The present invention may be embodied in a disk drive comprising a rotating magnetic media having tracks identified by binary codewords, and in a related method. Each track codeword for a particular track within a contiguous band of tracks differs from a track codeword for an adjacent track within the contiguous band of tracks by a defined number of bits, and differs from a track codeword for a nonadjacent track within the contiguous band of tracks by at least the defined number of bits. The defined number N of bits is greater than four such that at least two bit errors may be corrected when reading a track codeword.
摘要翻译： 本发明可以实现在包括具有由二进制码字标识的轨道的旋转磁性介质的磁盘驱动器中，并且在相关方法中。 用于轨道连续带内的特定轨道的每个轨道码字与轨道的连续频带内的相邻轨道的轨道码字不同，该位置在定义的位数之内，并且不同于在相邻频带内的非相邻轨道的轨道码字 轨道至少定义的位数。 所定义的位数N大于4，使得当读取轨道码字时可以校正至少两个比特错误。
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9.发明授权System and method for processing track identification data in a disk drive 有权用于处理磁盘驱动器中的磁道标识数据的系统和方法公开(公告)号：US07050249B1
公开(公告)日：2006-05-23
申请号：US10329157
申请日：2002-12-24
申请人： Jack M. Chue , Jai N. Subrahmanyam
发明人： Jack M. Chue , Jai N. Subrahmanyam
IPC分类号： G11B5/09
CPC分类号： G11B5/59683 , G11B5/59688
摘要： A system and method for processing track identification data in a disk drive having concentric tracks each having a track identification field (TIF) stored in embedded servo sectors, the TIF includes a band segment identifying a group of tracks, and an index segment identifying a single track of the group of tracks. The system and method include reading a servo sector to obtain the TIF, parsing the TIF to obtain the band segment, comparing the obtained band segment to an expected band segment to obtain a band segment differential (BSD), initiating an action if the BSD exceeds a pre-determined threshold and varies from the expected band segment by a predetermined number of bits, initiating another action if the BSD exceeds the predetermined threshold and does not vary from the expected band segment by the predetermined number of bits. The process is then applied to the index segments of the band segment.
摘要翻译： 一种用于处理磁盘驱动器中的磁道识别数据的系统和方法，所述磁盘驱动器具有各自具有存储在嵌入式伺服扇区中的磁道识别字段（TIF）的同心磁道，所述TIF包括标识一组磁道的带段和标识单个磁道的索引段 轨道组的轨道。 该系统和方法包括读取伺服扇区以获得TIF，解析TIF以获得带段，将获得的频带段与预期频带段进行比较以获得频带段差分（BSD），如果BSD超过 预定的阈值，并且从预期的频带段变化预定的比特数，如果BSD超过预定的阈值，则启动另一个动作，并且不会从预期的频带段改变预定的比特数。 然后将该过程应用于带段的索引段。
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10.发明授权Disk drive having internal data structures for efficiently storing repeatable runout cancellation information 失效具有内部数据结构的磁盘驱动器，用于有效地存储可重复的跳动消除信息公开(公告)号：US06972922B1
公开(公告)日：2005-12-06
申请号：US10360206
申请日：2003-02-07
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： A disk drive includes a sampled servo controller for periodically adjusting a control effort signal during a track-following operation based on embedded distributed position information and repeatable runout (RRO) cancellation values for reducing effects of RRO in the distributed position information during track following. A magnetic disk in the disk drive stores RRO information relating to predetermined RRO cancellation values for a data storage track. The RRO information for the data storage track includes at least one first data structure having a first predetermined number of data bits for representing an initial RRO cancellation value, and includes at least one second data structure having a second predetermined number of data bits associated with a respective subsequent RRO cancellation value. The first predetermined number of data bits is greater than the second predetermined number of data bits.
摘要翻译： 磁盘驱动器包括采样伺服控制器，用于基于嵌入的分布位置信息和可重复跳动（RRO）抵消值周期性地调整跟踪操作期间的控制努力信号，以减少跟踪期间分布位置信息中RRO的影响。 磁盘驱动器中的磁盘存储与用于数据存储轨道的预定RRO取消值相关的RRO信息。 用于数据存储轨道的RRO信息包括至少一个第一数据结构，其具有用于表示初始RRO抵消值的第一预定数量的数据位，并且包括至少一个第二数据结构，其具有第二预定数量的与 各自随后的RRO抵消值。 第一预定数量的数据位大于第二预定数量的数据位。
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