公开(公告)号：US09245579B2

公开(公告)日：2016-01-26

申请号：US14180329

申请日：2014-02-13

Applicant: LSI Corporation

Inventor： Xiufeng Song ,  Eui Seok Hwang ,  George Mathew

IPC: G11B20/10

CPC classification number: G11B20/10046 ,  G11B20/10037 ,  G11B20/10388

Abstract: A method for enhancing read performance in a multi-reader two-dimensional magnetic recording system comprising first and second readers includes: receiving first and second analog read signals from the first and second readers, respectively; sampling the first and second analog read signals to generate first and second sampled signals, respectively, each of the first and second sampled signals comprising an integer component, indicative of a value of a corresponding one of the first and second analog read signals, respectively, at an integer multiple of a corresponding sampling period associated therewith, and/or a fractional component, indicative of a value of the corresponding one of the first and second analog read signals, respectively, at an arbitrary point in time between integer multiples of the corresponding sampling period; and combining the integer and/or fractional components of the respective first and second sampled signals to thereby generate a reader offset estimation signal.

Abstract translation: 一种用于在包括第一和第二读取器的多读取器二维磁记录系统中提高读取性能的方法，包括：分别从第一和第二读取器接收第一和第二模拟读取信号; 对第一和​​第二模拟读取信号进行采样以分别产生第一和第二采样信号，第一和第二采样信号中的每一个分别包括表示第一和第二模拟读取信号中对应的一个的值的整数分量， 在与其相关联的相应采样周期的整数倍和/或分数分量中，分别表示在对应的第一和第二模拟读取信号的整数倍之间的任意时间点的相应一个的值 抽样期 以及组合相应的第一和第二采样信号的整数和/或分数分量，从而产生读取器偏移估计信号。

公开(公告)号：US20150380047A1

公开(公告)日：2015-12-31

申请号：US14318666

申请日：2014-06-29

Applicant: LSI Corporation

Inventor： Xiufeng Song ,  George Mathew

IPC: G11B20/10 ,  H04B1/12 ,  H04L25/08

CPC classification number: G11B20/10046 ,  H04B1/123 ,  H04L25/08

Abstract: A data processing system includes an adaptive notch filter operable to estimate an interference frequency in data samples, a convergence detector operable to determine whether the interference frequency converges on a value, indicating that the data samples contain interference, and an interference removal circuit operable to remove interference detected by the adaptive notch filter from the data samples.

Abstract translation: 数据处理系统包括可用于估计数据样本中的干扰频率的自适应陷波滤波器，可收敛检测器，其可操作以确定干扰频率是否收敛于指示数据样本包含干扰的值，以及干扰去除电路，其可操作以去除 干扰由数据采样自适应陷波滤波器检测。

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。

公开(公告)号：US20150160869A1

公开(公告)日：2015-06-11

申请号：US14109570

申请日：2013-12-17

Applicant: LSI Corporation

Inventor： Jun Xiao ,  Shu Li ,  Fan Zhang ,  George Mathew

IPC: G06F3/06 ,  G11B20/10

CPC classification number: G11B20/10046

Abstract: Systems, methods, devices, circuits for data processing, and more particularly to data processing including operational marginalization capability.

Abstract translation: 用于数据处理的系统，方法，设备，电路，更具体地涉及包括操作边缘化能力的数据处理。

公开(公告)号：US08976477B1

公开(公告)日：2015-03-10

申请号：US14198830

申请日：2014-03-06

Applicant: LSI Corporation

Inventor： Eui Seok Hwang ,  George Mathew ,  Xiufeng Song

IPC: G11B5/09

CPC classification number: G11B20/1403 ,  G11B5/59616 ,  G11B5/59644 ,  G11B20/10222 ,  G11B2020/1476

Abstract: The disclosure is directed to a system and method of generating soft-orthogonal syncmarks for at least a first set of tracks and a second set of tracks. Random pairs of sync patterns are searched to identify one or more pairs where the sync patterns of each pair exhibit delta-like autocorrelation and small cross-correlation with each other and with preamble portions of the tracks. Then a pair of sync patterns is selected from the one or more identified pairs, where the selected pair includes sync patterns that are distinguishable from the user data portions of the tracks at least partially based upon a data characteristic of the user data portions of the tracks. The selected pair of sync patterns is then used to generate a first syncmark for the first set of tracks and a second syncmark for the second set of tracks.

Abstract translation: 本公开涉及一种用于为至少第一组轨道和第二组轨道生成软正交同步标记的系统和方法。 搜索随机对同步模式以识别一对或多个对，其中每对的同步模式表现出类似三角形的自相关和彼此之间的小互相关以及轨道的前导码部分。 然后从一个或多个识别的对中选择一对同步模式，其中所选择的对包括至少部分地基于轨道的用户数据部分的数据特征可区分于轨道的用户数据部分的同步模式 。 所选择的一对同步模式然后用于为第一组轨道生成第一同步标记，并为第二组轨道生成第二同步标记。

公开(公告)号：US08902536B1

公开(公告)日：2014-12-02

申请号：US14252652

申请日：2014-04-14

Applicant: LSI Corporation

Inventor： Eui Seok Hwang ,  George Mathew

IPC: G11B21/02

CPC classification number: G11B5/59627 ,  G11B5/4886 ,  G11B5/5539

Abstract: A method for enhancing read performance in an ARMR system includes: obtaining a first reader offset profile corresponding to a first reader of a multi-reader array head in the ARMR system; obtaining at least a second reader offset profile corresponding to at least a second reader of the multi-reader array head in the ARMR system; combining the first and second reader offset profiles to generate a combined reader offset profile; and controlling a location of the multi-reader array head in the ARMR system relative to at least one target track associated with a magnetic storage medium to be read as a function of a peak amplitude of the combined reader offset profile.

Abstract translation: 一种用于增强ARMR系统中的读取性能的方法包括：获得与ARMR系统中的多读取器阵列头的第一读取器相对应的第一读取器偏移曲线; 获得与ARMR系统中的多读取器阵列头的至少第二读取器对应的至少第二读取器偏移轮廓; 组合第一和第二读取器偏移曲线以生成组合的读取器偏移轮廓; 以及控制所述多读取器阵列头在所述ARMR系统中相对于与要被读取的磁存储介质相关联的至少一个目标轨道的位置，作为所述组合的读取器偏移轮廓的峰值幅度的函数。

公开(公告)号：US20140286385A1

公开(公告)日：2014-09-25

申请号：US13853695

申请日：2013-03-29

Applicant: LSI CORPORATION

Inventor： Bruce Wilson ,  George Mathew ,  Jongseung Park

IPC: H04L27/01

CPC classification number: G11B20/10046 ,  H04L25/03038

Abstract: Embodiments are related to systems and methods for data processing, and more particularly to systems and methods for equalizing a data signal.

Abstract translation: 实施例涉及用于数据处理的系统和方法，更具体地涉及用于均衡数据信号的系统和方法。

公开(公告)号：US20160035384A1

公开(公告)日：2016-02-04

申请号：US14446012

申请日：2014-07-29

Applicant: LSI Corporation

Inventor： Eui Seok Hwang ,  George Mathew

IPC: G11B20/10 ,  G11B5/56

CPC classification number: G11B20/10388 ,  G11B5/3958 ,  G11B5/3964 ,  G11B5/56 ,  G11B20/10037 ,  G11B20/10046

Abstract: A method for enhancing read performance in an ARMR system includes: obtaining CTS information for a plurality of readers in a multi-reader head of the ARMR system, the CTS information defining a relationship between skew angle and CTS between respective combinations of subsets of the readers; determining, as a function of the CTS information, a subset of the readers which provides enhanced read performance among the readers for each of a plurality of skew angles; assigning a weight value to each of a plurality of read signals generated by a corresponding one of the readers for each of the skew angles, the weight value being indicative of a performance of the corresponding one of the readers relative to one another; and decoding information read from at least one target track of a magnetic storage medium being read as a function of the read signals and corresponding weight values.

Abstract translation: 一种用于增强ARMR系统中的读取性能的方法包括：在ARMR系统的多读取器头部中获得多个读取器的CTS信息，CTS信息定义倾斜角度与读取器子集的各组合之间的CTS之间的关系 ; 根据所述CTS信息确定所述读取器的子集，其为所述读取器中的多个倾斜角中的每一个提供增强的读取性能; 为每个所述倾斜角度的每个所述读取器生成的多个读取信号中的每一个分配权重值，所述权重值指示所述相应读取器之一相对于彼此的性能; 以及根据读取的信号和对应的权重值来读取从磁性存储介质的至少一个目标轨道读取的解码信息。

公开(公告)号：US09129650B2

公开(公告)日：2015-09-08

申请号：US14021811

申请日：2013-09-09

Applicant: LSI Corporation

Inventor： George Mathew ,  Bruce Wilson ,  Suharli Tedja ,  Eui Seok Hwang

IPC: G11B20/06 ,  G11B5/09 ,  G11B5/035 ,  G11B5/02 ,  G11B20/10

CPC classification number: G11B20/10268 ,  G11B20/10009 ,  G11B20/10046

Abstract: A magnetic recording system includes an array of analog inputs operable to receive analog signals retrieved from a magnetic storage medium, a modulator operable to combine the analog signals to yield a frequency division multiplexed signal, a demodulator operable to yield a plurality of demodulated signals from the frequency division multiplexed signal corresponding to each channel of the array, and a joint equalizer operable to filter the plurality of demodulated signals to yield an equalized output.

Abstract translation: 磁记录系统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，可操作以组合模拟信号以产生频分多路复用信号的调制器，解调器，可操作以产生来自 对应于阵列的每个通道的频分多路复用信号，以及联合均衡器，可操作以对多个解调信号进行滤波以产生均衡的输出。

公开(公告)号：US20150029608A1

公开(公告)日：2015-01-29

申请号：US14021811

申请日：2013-09-09

Applicant: LSI Corporation

Inventor： George Mathew ,  Bruce Wilson ,  Suharli Tedja ,  Eui Seok Hwang

IPC: G11B20/10

CPC classification number: G11B20/10268 ,  G11B20/10009 ,  G11B20/10046

Abstract: A magnetic recording system includes an array of analog inputs operable to receive analog signals retrieved from a magnetic storage medium, a modulator operable to combine the analog signals to yield a frequency division multiplexed signal, a demodulator operable to yield a plurality of demodulated signals from the frequency division multiplexed signal corresponding to each channel of the array, and a joint equalizer operable to filter the plurality of demodulated signals to yield an equalized output.

Abstract translation: 磁记录系统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，可操作以组合模拟信号以产生频分多路复用信号的调制器，解调器，可操作以产生来自 对应于阵列的每个通道的频分多路复用信号，以及联合均衡器，可操作以对多个解调信号进行滤波以产生均衡的输出。