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    Multiple Track Detection
    1.
    发明申请
    Multiple Track Detection 有权
    多轨检测

    公开(公告)号：US20150199991A1

    公开(公告)日：2015-07-16

    申请号：US14158739

    申请日：2014-01-17

    Applicant: LSI Corporation

    Inventor： George Mathew ,  Bruce A. Wilson ,  Jongseung Park

    IPC: G11B20/10

    CPC classification number: G11B20/10046 ,  G11B5/09 ,  G11B20/10055 ,  G11B20/10222 ,  G11B20/10268

    Abstract: An apparatus for reading data includes an array of analog inputs operable to receive analog signals retrieved from a magnetic storage medium, wherein the analog inputs correspond to multiple data tracks on the magnetic storage medium, and wherein the number of analog inputs in the array of analog inputs is greater than the number of data tracks being read, at least one joint equalizer operable to filter the analog inputs to yield an equalized output for each of the data tracks being read, and at least one data detector operable to apply a detection algorithm to the equalized output from the joint equalizer to yield detected values for each of the data tracks being read.

    Abstract translation: 一种用于读取数据的装置包括可操作以接收从磁存储介质检索的模拟信号的模拟输入阵列，其中所述模拟输入对应于所述磁存储介质上的多个数据磁道，并且其中所述模拟输入阵列中的模拟输入的数量 至少一个联合均衡器可操作以对模拟输入进行滤波，以产生正被读取的每个数据轨道的均衡输出，以及至少一个数据检测器，可操作以将检测算法应用于 来自联合均衡器的均衡输出，以产生正被读取的每个数据轨道的检测值。

    Storage Media Inter-Track interference Cancellation
    4.
    发明申请
    Storage Media Inter-Track interference Cancellation 审中-公开
    存储介质间跟踪干扰消除

    公开(公告)号：US20150015984A1

    公开(公告)日：2015-01-15

    申请号：US14500226

    申请日：2014-09-29

    Applicant: LSI Corporation

    Inventor： Ming Jin ,  Erich F. Haratsch ,  George Mathew ,  Jongseung Park ,  Timothy W. Swatosh ,  Timothy B. Lund ,  Carl E. Forham

    IPC: G11B5/09 ,  G11B20/10

    CPC classification number: G11B5/09 ,  G11B5/012 ,  G11B19/045 ,  G11B20/10046 ,  G11B20/10212 ,  G11B20/10462 ,  G11B20/1217 ,  G11B20/1423 ,  G11B2020/10759 ,  G11B2020/1232 ,  G11B2020/1298 ,  G11B2020/183 ,  G11B2020/185 ,  G11B2020/1856 ,  G11B2220/2516

    Abstract: 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. A 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 and a second 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 each adjacent track and subtracts the estimated ITI of each adjacent track from the data for the sectors of the desired track, providing updated sector data. The ITI cancelled data is replayed to the decoder, Which decodes the ITT cancelled data and provides the decoded ITI cancelled data as output of the read channel.

    Abstract translation: 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。 读通道的解码器解码读扇区，并且如果从存储介质中错误地恢复读扇区，则读取第一相邻轨道和第二相邻轨道的选定扇区。 读通道的ITI消除器估计对应于每个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每个相邻磁道的估计ITI，从而提供更新的扇区数据 。 ITI取消的数据被重播到解码器，解码器解码ITT取消的数据，并将解码的ITI取消的数据作为读取通道的输出。

    Inter-track interference mitigation in magnetic recording systems using averaged values
    9.
    发明授权
    Inter-track interference mitigation in magnetic recording systems using averaged values 有权
    磁记录系统中使用平均值的轨道间干扰减轻

    公开(公告)号：US08902524B2

    公开(公告)日：2014-12-02

    申请号：US13834648

    申请日：2013-03-15

    Applicant: LSI Corporation

    Inventor： Erich F. Haratsch ,  Ming Jin ,  George Mathew ,  Jongseung Park ,  Kurt J. Worrell

    IPC: G11B5/09 ,  G11B20/22 ,  G11B5/012 ,  G11B19/04 ,  G11B20/10

    CPC classification number: G11B20/22 ,  G11B5/012 ,  G11B5/09 ,  G11B19/045 ,  G11B20/10009

    Abstract: Hardware-based methods and apparatus are provided for inter-track interference mitigation in magnetic recording systems using averaged values. Inter-track interference (ITI) is mitigated in a magnetic recording system by obtaining ITI cancellation data; and providing the ITI cancellation data for ITI mitigation, wherein the ITI mitigation is performed in combination with an averaging procedure for one or more of ITI mitigation of averaged data and averaging of ITI mitigated data. The sector is optionally decoded using the ITI mitigated samples. Samples for one or more side track sectors can also be averaged. The averaged side track samples can be provided as ITI cancellation data for ITI mitigation. The averaging procedure optionally applies a scaling factor to each read value.

    Abstract translation: 提供基于硬件的方法和装置，用于使用平均值的磁记录系统中的轨道间干扰减轻。 通过获取ITI取消数据，在磁记录系统中减轻了轨道间干扰（ITI）。 以及提供用于ITI缓解的ITI抵消数据，其中ITI缓解与对平均数据的ITI缓解和ITI缓解数据的平均中的一个或多个的平均过程相结合执行。 可选地使用ITI缓解样本来解码扇区。 也可以对一个或多个侧轨道扇区的采样进行平均。 可以将平均的侧轨样本作为ITI缓解的ITI取消数据提供。 平均过程可选地对每个读取值应用缩放因子。

    TRACK MISREGISTRATION SENSITIVE INITIALIZATION OF JOINT EQUALIZER
    10.
    发明申请
    TRACK MISREGISTRATION SENSITIVE INITIALIZATION OF JOINT EQUALIZER 有权
    跟踪均衡器的敏感初始化

    公开(公告)号：US20150255101A1

    公开(公告)日：2015-09-10

    申请号：US14263562

    申请日：2014-04-28

    Applicant: LSI Corporation

    Inventor： George Mathew ,  Jongseung Park ,  Eui Seok Hwang

    IPC: G11B5/596 ,  G06F3/06 ,  G11B20/10

    CPC classification number: G11B5/59627 ,  G06F3/0608 ,  G06F3/0644 ,  G06F3/0689 ,  G11B5/012 ,  G11B5/4886 ,  G11B5/58 ,  G11B20/10009 ,  G11B20/10046 ,  G11B2005/0013

    Abstract: A method of mitigating an effect of track misregistration on read performance in a system comprising an array-reader includes determining an estimated off-track condition, selecting translation coefficients based on the estimated off-track condition, determining updated equalizer coefficients by applying the translation coefficients to native equalizer coefficients, and applying the updated equalizer coefficients to signals received from the array-reader to output a read signal.

    Abstract translation: 一种减轻跟踪配准对包括阵列读取器的系统中的读取性能的影响的方法包括：确定估计的偏离轨迹条件，基于估计的偏离轨迹条件选择转换系数，通过应用平移系数来确定更新的均衡器系数 到原始均衡器系数，以及将更新的均衡器系数应用于从阵列读取器接收的信号，以输出读取信号。

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