Method and apparatus for data storage in a disk drive
    1.
    发明授权
    Method and apparatus for data storage in a disk drive 有权
    数据存储在磁盘驱动器中的方法和装置

    公开(公告)号:US06924952B1

    公开(公告)日:2005-08-02

    申请号:US09923910

    申请日:2001-08-06

    摘要: A method and apparatus for increasing formatting efficiency of a disk drive is disclosed. In one embodiment, a method for storing data in a disk drive is provided. The disk drive is coupled to a computer via an interface. The method includes the steps of storing data on a disk surface in a disk block having a predetermined length; and, presenting data from the disk drive to the interface as a host block having a predetermined length, wherein the predetermined length of the disk block is equal to N times the predetermined length of the host block, where N is a natural number greater than 1. In one embodiment, a read/modify/write procedure is provided to ensure that data is not lost when a power failure occurs during a write operation when the number of host blocks being written is not a multiple of N.

    摘要翻译: 公开了一种用于提高磁盘驱动器的格式化效率的方法和装置。 在一个实施例中,提供了一种用于将数据存储在磁盘驱动器中的方法。 磁盘驱动器经由接口耦合到计算机。 该方法包括以下步骤:将数据存储在具有预定长度的盘块中的盘表面上; 并且将来自磁盘驱动器的数据呈现为具有预定长度的主机块的接口,其中盘块的预定长度等于主机块的预定长度的N倍,其中N是大于1的自然数 在一个实施例中,提供读/修改/写入过程以确保在写入操作期间发生电源故障时数据不会丢失,当正在写入的主机块的数量不是N的倍数时。

    Dynamic shock detection in disk drive using accumulated average position error
    3.
    发明授权
    Dynamic shock detection in disk drive using accumulated average position error 失效
    磁盘驱动器中的动态震动检测使用累积的平均位置误差

    公开(公告)号:US07154690B1

    公开(公告)日:2006-12-26

    申请号:US11110097

    申请日:2005-04-19

    IPC分类号: G11B19/04

    摘要: Dynamically detecting off-track errors in a disk drive by adjusting transducer head position control parameters in response to shock events. In an embodiment, shock events with large magnitude trigger a severe shock timer which lengthens the write fault before write operations resume. In another embodiment, a lower shock threshold is used following an initial shock event. In yet another embodiment, a lower shock threshold is used if an accumulated average position error of the transducer head is large.

    摘要翻译: 通过根据冲击事件调整换能器头部位置控制参数来动态地检测磁盘驱动器中的偏离磁道错误。 在一个实施例中,具有大幅度的冲击事件触发严重的冲击计时器,其在写入操作恢复之前延长写入故障。 在另一个实施例中,在初始冲击事件之后使用较低的冲击阈值。 在另一个实施例中,如果换能器头的累积的平均位置误差较大,则使用较低的冲击阈值。

    Method and apparatus for partial self-servo writing using servo wedge propagation
    4.
    发明授权
    Method and apparatus for partial self-servo writing using servo wedge propagation 有权
    使用伺服楔形传播的部分自伺服写入的方法和装置

    公开(公告)号:US07050260B1

    公开(公告)日:2006-05-23

    申请号:US10293904

    申请日:2002-11-12

    IPC分类号: G11B21/02

    CPC分类号: G11B5/59633 G11B5/59666

    摘要: A method and apparatus for partial self-servo writing a disk surface in a disk drive using servo wedge propagation is provided. In one embodiment, servo information is written by a servo track writer near an outer diameter of the disk surface. The servo information is grouped into a 1× set of servo information and a 2× set of servo information. The disk drive's read head is used to read the 1× set of servo information in order to position the disk drive's write head to write servo information which is radially-aligned with the 2× set of servo information. Then, the disk drive's read head is used to read the 2× set of servo information in order to position the disk drive's write head to write servo information which is radially-aligned with the 1× set of servo information. The process is repeated on a track-by-track basis until servo information is written from the outer diameter of the disk surface to the inner diameter of the disk surface, as if it was entirely written by a servo track writer.

    摘要翻译: 提供了一种使用伺服楔形传播将部分自伺服写入盘驱动器中的盘表面的方法和装置。 在一个实施例中,伺服信息由靠近盘表面的外径的伺服轨迹写入器写入。 伺服信息分为1组伺服信息和2组伺服信息。 磁盘驱动器的读取头用于读取1x组伺服信息,以便将磁盘驱动器的写入头定位成与2组伺服信息径向对齐的伺服信息。 然后,磁盘驱动器的读取头用于读取2组伺服信息,以便将磁盘驱动器的写入头定位成写入与1组伺服信息径向对齐的伺服信息。 在逐个轨道的基础上重复该过程,直到从盘表面的外径到盘表面的内径写入伺服信息为止,就好像完全由伺服记录器写入。

    Method and apparatus for providing a variable rate oversampling digital filter for resonance compensation in disk drive servo control systems
    5.
    发明授权
    Method and apparatus for providing a variable rate oversampling digital filter for resonance compensation in disk drive servo control systems 有权
    用于在盘驱动器伺服控制系统中提供用于共振补偿的可变速率过采样数字滤波器的方法和装置

    公开(公告)号:US06785080B1

    公开(公告)日:2004-08-31

    申请号:US09974454

    申请日:2001-10-09

    IPC分类号: G11B2102

    CPC分类号: G11B5/59622

    摘要: A method and apparatus for controlling the position of a disk drive transducer head relative to a target track are provided. An oversampled control output allows frequencies that are higher than the Nyquist frequency of the servo control system to be filtered. The system initiates a plurality of control outputs during a single sampling period, allowing the use of a single processor interrupt for each sampling period. The outputs initiated during a single sampling period may be of unequal length. In addition, the outputs may be proportioned so that the total control energy provided to the actuator is equal to the control energy that would be provided by control outputs initiated every one-half sampling period.

    摘要翻译: 提供了一种用于控制盘驱动器换能器头相对于目标轨道的位置的方法和装置。 过采样控制输出允许高于伺服控制系统的奈奎斯特频率的频率进行滤波。 系统在单个采样周期内启动多个控制输出,允许在每个采样周期使用单个处理器中断。 在单个采样周期期间发起的输出可能具有不相等的长度。 此外,输出可以成比例,使得提供给致动器的总控制能量等于由每半个采样周期启动的控制输出将提供的控制能量。

    Partial servo write fill in
    6.
    发明授权
    Partial servo write fill in 有权
    部分伺服写入

    公开(公告)号:US06714376B1

    公开(公告)日:2004-03-30

    申请号:US09905564

    申请日:2001-07-13

    IPC分类号: G11B2102

    CPC分类号: G11B5/59633

    摘要: A method and apparatus for writing servo information to disks within a disk drive is disclosed. A servo track writer is used to write first servo information to the disks. The disk drive is then sealed, and the read/write heads within the disk drive are used to fill in second servo information. The first servo information includes digital information and A, B, C, and D servo bursts for a first number of tracks on the disks. The first servo information also includes digital information and A and B servo bursts for the remaining tracks on the disks. After the disk drive is sealed in the manufacturing process, the read/write heads within the disk drive fill in the second servo information, which includes C and D servo bursts for the remaining tracks. The read head reads the first servo information in the first number of tracks, and the position of the write head is adjusted based on the first servo information. The write head is then used to write the second servo information to a first remaining track, resulting in complete servo information for the first remaining track. The read head then reads the complete servo information in the first remaining track, and writes the second servo information for a second remaining track. This continues until the complete servo information is propagated to all of the remaining tracks.

    摘要翻译: 公开了一种将伺服信息写入盘驱动器内的盘的方法和装置。 伺服记录器用于将第一伺服信息写入磁盘。 然后将磁盘驱动器密封,并且使用盘驱动器内的读/写磁头来填充第二伺服信息。 第一伺服信息包括磁盘上的第一数目磁道的数字信息和A,B,C和D伺服脉冲串。 第一伺服信息还包括用于磁盘上剩余磁道的数字信息和A和B伺服脉冲串。 在制造过程中密封磁盘驱动器之后,磁盘驱动器内的读/写磁头填充第二伺服信息,其中包括用于剩余磁道的C和D伺服脉冲串。 读取头读取第一数量的磁道中的第一伺服信息,并且基于第一伺服信息来调整写入头的位置。 然后使用写头将第二伺服信息写入第一剩余磁道,从而产生用于第一剩余磁道的完整伺服信息。 然后,读取头读取第一剩余轨道中的完整伺服信息,并写入第二剩余轨道的第二伺服信息。 这将继续,直到完整的伺服信息传播到所有剩余的轨道。

    Method for providing variable gain, iterative embedded runout correction in a disk drive
    10.
    发明授权
    Method for providing variable gain, iterative embedded runout correction in a disk drive 有权
    在磁盘驱动器中提供可变增益,迭代嵌入的跳动校正的方法

    公开(公告)号:US07167336B1

    公开(公告)日:2007-01-23

    申请号:US10410576

    申请日:2003-04-08

    IPC分类号: G11B5/596

    CPC分类号: G11B5/59627

    摘要: A method for determining embedded runout correction (ERC) values using iteration and variable gain in a disk drive. A disk has a track written thereon, an ERC value is determined for a servo sector on the track using variable gain, and the variable gain decreases based on the number of revolutions of the disk.

    摘要翻译: 一种使用磁盘驱动器中的迭代和可变增益来确定嵌入式跳动校正(ERC)值的方法。 磁盘具有写入的轨道,使用可变增益确定轨道上的伺服扇区的ERC值,并且可变增益基于盘的转数而减小。