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    Storage media inter-track interference cancellation
    3.
    发明授权
    Storage media inter-track interference cancellation 有权
    存储介质轨道间干扰消除

    公开(公告)号：US08830613B2

    公开(公告)日：2014-09-09

    申请号：US13591980

    申请日：2012-08-22

    申请人： Timothy B. Lund ,  Carl E. Forhan ,  Timothy W. Swatosh ,  Erich Franz Haratsch ,  George Mathew ,  Ming Jin ,  Jongseung Park

    发明人： Timothy B. Lund ,  Carl E. Forhan ,  Timothy W. Swatosh ,  Erich Franz Haratsch ,  George Mathew ,  Ming Jin ,  Jongseung Park

    IPC分类号： G11B5/09

    CPC分类号： G11B20/10046 ,  G11B5/012 ,  G11B5/09 ,  G11B19/045 ,  G11B20/10268 ,  G11B20/10398 ,  G11B20/10462 ,  G11B20/1407 ,  G11B2020/183 ,  G11B2220/2516

    摘要： Described embodiments provide a method of cancelling inter-track interference (ITI) from one or more sectors read from a desired track of a storage medium. A read channel reads sectors in a desired track of the storage medium. An iterative decoder of the read channel decodes the read sectors, and if the read sectors are incorrectly recovered from the storage medium, selected sectors of a first adjacent track are read. An ITI canceller of the read channel estimates ITI in the read sectors of the desired track corresponding to the selected sectors of the adjacent track and subtracts the estimated ITI of the adjacent track from the data for the sectors of the desired track, providing updated sector data. The ITI cancelled data is replayed to the iterative decoder, which decodes the ITI cancelled data and provides the decoded ITI cancelled data as output data of the read channel.

    摘要翻译： 所描述的实施例提供了从存储介质的期望轨迹读取的一个或多个扇区消除轨道间干扰（ITI）的方法。 读通道读取存储介质的期望轨道中的扇区。 读通道的迭代解码器解码读扇区，并且如果从存储介质错误地恢复读扇区，则读取第一相邻轨道的选定扇区。 读通道的ITI消除器估计对应于相邻磁道的所选扇区的期望磁道的读扇区中的ITI，并从期望磁道的扇区的数据中减去相邻磁迹的估计ITI，从而提供更新的扇区数据 。 ITI取消的数据被重播到迭代解码器，该解码器对ITI取消的数据进行解码，并将解码的ITI取消的数据作为读取通道的输出数据提供。

    STORAGE MEDIA INTER-TRACK INTERFERENCE CANCELLATION
    4.
    发明申请
    STORAGE MEDIA INTER-TRACK INTERFERENCE CANCELLATION 有权
    存储媒体互联干扰消除

    公开(公告)号：US20130223199A1

    公开(公告)日：2013-08-29

    申请号：US13591980

    申请日：2012-08-22

    申请人： Timothy B. Lund ,  Carl E. Forhan ,  Timothy W. Swatosh ,  Erich Franz Haratsch ,  George Mathew ,  Ming Jin ,  Jongseung Park

    发明人： Timothy B. Lund ,  Carl E. Forhan ,  Timothy W. Swatosh ,  Erich Franz Haratsch ,  George Mathew ,  Ming Jin ,  Jongseung Park

    IPC分类号： G11B20/10

    CPC分类号： G11B20/10046 ,  G11B5/012 ,  G11B5/09 ,  G11B19/045 ,  G11B20/10268 ,  G11B20/10398 ,  G11B20/10462 ,  G11B20/1407 ,  G11B2020/183 ,  G11B2220/2516

    摘要： Described embodiments provide a method of cancelling inter-track interference (ITI) from one or more sectors read from a desired track of a storage medium. A read channel reads sectors in a desired track of the storage medium. An iterative decoder of the read channel decodes the read sectors, and if the read sectors are incorrectly recovered from the storage medium, selected sectors of a first adjacent track are read. An ITI canceller of the read channel estimates ITI in the read sectors of the desired track corresponding to the selected sectors of the adjacent track and subtracts the estimated ITI of the adjacent track from the data for the sectors of the desired track, providing updated sector data. The ITI cancelled data is replayed to the iterative decoder, which decodes the ITI cancelled data and provides the decoded ITI cancelled data as output data of the read channel.

    摘要翻译： 所描述的实施例提供了从存储介质的期望轨迹读取的一个或多个扇区消除轨道间干扰（ITI）的方法。 读通道读取存储介质的期望轨道中的扇区。 读通道的迭代解码器解码读扇区，并且如果从存储介质错误地恢复读扇区，则读取第一相邻轨道的选定扇区。 读通道的ITI消除器估计对应于相邻磁道的所选扇区的期望磁道的读扇区中的ITI，并从期望磁道的扇区的数据中减去相邻磁迹的估计ITI，从而提供更新的扇区数据 。 ITI取消的数据被重播到迭代解码器，该解码器对ITI取消的数据进行解码，并将解码的ITI取消的数据作为读取通道的输出数据提供。

    Disk drive employing method of writing a data block to a data sector following a defective servo sector
    7.
    发明授权
    Disk drive employing method of writing a data block to a data sector following a defective servo sector 失效
    磁盘驱动器采用将数据块写入跟随有缺陷伺服扇区的数据扇区的方法

    公开(公告)号：US6078452A

    公开(公告)日：2000-06-20

    申请号：US102982

    申请日：1998-06-22

    申请人： Greg Kittilson ,  Mark Schibilla ,  Timothy W. Swatosh

    发明人： Greg Kittilson ,  Mark Schibilla ,  Timothy W. Swatosh

    IPC分类号： G11B20/12 ,  G11B20/18 ,  G11B27/36 ,  G11B27/22

    CPC分类号： G11B27/36 ,  G11B20/18

    摘要： A disk drive employs a method for writing a block of data (or multiple blocks of data) to a data region following a defective servo sectors. The disk drive includes a sampled head positioning servo system and a rotating disk with a plurality of data tracks on a surface of the disk. Each data track has multiple spaced-apart sequentially-active servo sectors. Data regions are disposed between the servo sectors. The method includes the step of executing a command to perform a write operation to write a data block to a target data region. A defective servo sector S.sub.n is encountered preceding the target data region during the write operation. The defective servo sector S.sub.n precedes a servo sector S.sub.n+1 and follows a servo sector S.sub.n-1. A timer interval is set to enable a first detection window Dw.sub.n+1 for detecting a field in servo sector S.sub.n+1 . If the field is detected within the detection window Dw.sub.n+1, a field is detected within a detection window Dw.sub.n-1 for the servo sector S.sub.n-1. The data block is written in the target data region following the defective servo sector S.sub.n based on detecting the field within the detection window Dw.sub.n-1 for the servo sector S.sub.n-1 . A timer interval is set to enable a second detection window Dw.sub.n+1 for detecting a field in the servo sector S.sub.n+1 . If the field in the servo sector S.sub.n+1 is detected within the second detection window Dw.sub.n+1, the data block is marked as being successfully written.

    摘要翻译： 磁盘驱动器采用将数据块（或多个数据块）写入跟随有缺陷伺服扇区的数据区域的方法。 磁盘驱动器包括采样磁头定位伺服系统和在盘的表面上具有多个数据磁道的旋转磁盘。 每个数据轨道具有多个间隔开的顺序主动的伺服扇区。 数据区域设置在伺服扇区之间。 该方法包括执行写入操作以将数据块写入目标数据区域的命令的步骤。 在写入操作期间在目标数据区域之前遇到有缺陷的伺服扇区Sn。 伺服扇区Sn先于伺服扇区Sn + 1并跟随伺服扇区Sn-1。 设置定时器间隔以使第一检测窗口Dwn + 1能够检测伺服扇区Sn + 1中的场。 如果在检测窗口Dwn + 1内检测到该场，则在伺服扇区Sn-1的检测窗口Dwn-1内检测到一个场。 基于检测用于伺服扇区Sn-1的检测窗口Dwn-1中的场，数据块被写入跟随有缺陷伺服扇区Sn的目标数据区域中。 设置定时器间隔以使第二检测窗口Dwn + 1用于检测伺服扇区Sn + 1中的场。 如果在第二检测窗口Dwn + 1内检测到伺服扇区Sn + 1中的场，则将数据块标记为成功写入。

    Disk drive with cache employing host pointer jumps during skip-ahead or semi-repeating accesses
    9.
    发明授权
    Disk drive with cache employing host pointer jumps during skip-ahead or semi-repeating accesses 失效
    带有缓存的磁盘驱动器，在跳过或半重复访问期间使用主机指针跳转

    公开(公告)号：US5890212A

    公开(公告)日：1999-03-30

    申请号：US884437

    申请日：1997-06-27

    申请人： Daniel John Sokolov ,  Timothy W. Swatosh

    发明人： Daniel John Sokolov ,  Timothy W. Swatosh

    IPC分类号： G06F3/06 ,  G06F12/08 ,  G06F12/12

    CPC分类号： G06F3/061 ,  G06F12/0862 ,  G06F12/0866 ,  G06F12/0871 ,  G06F12/123 ,  G06F3/0634 ,  G06F3/0676 ,  G06F2212/601 ,  G06F2212/6026

    摘要： A method of managing commands is provided for a disk drive having an intelligent interface for communicating with a host. The drive also has a magnetic disk, host side programs, disk side programs, and a cache wherein the cache is divisible into a number of segments. The cache employs a cache control structure including a cache entry table, a buffer counter, a block count, a host pointer and a disk pointer. The drive receives a first command and a second command with a cache access type. The method of managing commands comprises the steps of: processing the first command to assign the first command to a cache segment having a prefetch area; determining the cache access type of the second command; and if the cache access type of the second command is a skip ahead sequential access then decrementing the buffer counter and incrementing the host pointer to skip leading nonrequested data in the prefetch area for the first command.

    摘要翻译： 为具有用于与主机通信的智能接口的磁盘驱动器提供管理命令的方法。 驱动器还具有磁盘，主机侧程序，磁盘侧程序和高速缓存，其中高速缓存可分为多个段。 高速缓存采用包括缓存条目表，缓冲计数器，块计数，主机指针和磁盘指针的高速缓存控制结构。 驱动器接收具有缓存访问类型的第一命令和第二命令。 管理命令的方法包括以下步骤：处理第一命令以将第一命令分配给具有预取区域的高速缓存段; 确定第二命令的高速缓存访​​问类型; 并且如果第二命令的高速缓存访​​问类型是前进顺序访问，则递减缓冲计数器并递增主指针以跳过第一命令的预取区域中的前导未请求数据。