公开(公告)号：US09305595B2

公开(公告)日：2016-04-05

申请号：US14225409

申请日：2014-03-25

Applicant: LSI Corporation

Inventor： Eui Seok Hwang ,  George Mathew

IPC: G11B27/36 ,  G11B21/02 ,  G11B20/12 ,  G11B20/10

CPC classification number: G11B20/1217 ,  G11B20/10009 ,  G11B27/36

Abstract: A method of operating a multi-reader two-dimensional magnetic recording system includes determining a position of a multi-reader head of the multi-reader two-dimensional magnetic recording system, determining an areal density push according to the position of the multi-reader head, and performing an operation to read data from or write data to a magnetic recording medium according to the areal density push.

Abstract translation: 操作多读取器二维磁记录系统的方法包括确定多读取器二维磁记录系统的多读取头的位置，根据多读取器的位置确定面密度推送 并且根据面密度推动执行从磁记录介质读取数据或写入数据的操作。

公开(公告)号：US09214185B1

公开(公告)日：2015-12-15

申请号：US14318666

申请日：2014-06-29

Applicant: LSI Corporation

Inventor： Xiufeng Song ,  George Mathew

IPC: G11B5/035 ,  G11B20/10 ,  H04L25/08 ,  H04B1/12

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：US09129646B2

公开(公告)日：2015-09-08

申请号：US14031990

申请日：2013-09-19

Applicant: LSI Corporation

Inventor： George Mathew ,  Nayak Ratnakar Aravind ,  Suharli Tedja

IPC: G11B5/00 ,  G11B20/10 ,  G11B5/09 ,  G11B5/012

CPC classification number: G11B20/10046 ,  G11B5/012 ,  G11B5/09 ,  G11B20/10009 ,  G11B20/10222 ,  G11B20/10527

Abstract: A magnetic recording system includes an array of analog inputs operable to receive an array of analog signals retrieved from a magnetic storage medium, where one of the array of analog signals corresponds with a reference channel, a timing recovery circuit operable to generate a clock signal based on the analog signal for the reference channel, a number of analog to digital converters each operable to sample one of the array of analog signals based on the clock signal to yield a number of digital channels, and a joint equalizer operable to filter the digital channels to yield an equalized output.

Abstract translation: 磁记录系统包括一组模拟输入，可操作用于接收从磁存储介质检索的模拟信号阵列，其中模拟信号阵列之一对应于参考通道，定时恢复电路可操作以产生基于时钟信号 对于参考通道的模拟信号，多个模数转换器，每个转换器可操作以基于时钟信号对模拟信号阵列中的一个进行采样以产生多个数字通道;以及联合均衡器，可操作以对数字通道进行滤波 以产生均衡的输出。

公开(公告)号：US20150221333A1

公开(公告)日：2015-08-06

申请号：US14225409

申请日：2014-03-25

Applicant: LSI Corporation

Inventor： Eui Seok Hwang ,  George Mathew

IPC: G11B20/10

CPC classification number: G11B20/1217 ,  G11B20/10009 ,  G11B27/36

Abstract: A method of operating a multi-reader two-dimensional magnetic recording system includes determining a position of a multi-reader head of the multi-reader two-dimensional magnetic recording system, determining an areal density push according to the position of the multi-reader head, and performing an operation to read data from or write data to a magnetic recording medium according to the areal density push.

Abstract translation: 操作多读取器二维磁记录系统的方法包括确定多读取器二维磁记录系统的多读取头的位置，根据多读取器的位置确定面密度推送 并且根据面密度推动执行从磁记录介质读取数据或写入数据的操作。

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。

公开(公告)号：US08848308B2

公开(公告)日：2014-09-30

申请号：US13784448

申请日：2013-03-04

Applicant: LSI Corporation

Inventor： Jun Xiao ,  Fan Zhang ,  George Mathew ,  Erich F. Haratsch

IPC: G11B5/035 ,  G11B20/10

CPC classification number: G11B20/10046

Abstract: Various embodiments of the present invention provide systems and methods for mitigating inter-track interference using pre-equalized data samples.

Abstract translation: 本发明的各种实施例提供了使用预均衡数据样本来减轻轨道间干扰的系统和方法。

公开(公告)号：US20140233130A1

公开(公告)日：2014-08-21

申请号：US14259355

申请日：2014-04-23

Applicant: LSI Corporation

Inventor： George Mathew ,  Shaohua Yangca ,  Yuan Xing Li ,  Hongwei Song

IPC: G11B20/10

CPC classification number: G11B20/10046 ,  H04B17/345

Abstract: Various embodiments of the present invention provide systems and methods for estimating noise components in a received signal set. For example, one embodiment of the present invention provides a noise estimation circuit that includes a data detector circuit and a noise component calculation circuit. The data detector circuit receives a series of data samples and provides a detected output, and the noise component calculation circuit provides an electronics noise power output and a media noise power output each calculated based at least in part on the detected output and the series of data samples.

Abstract translation: 本发明的各种实施例提供了用于估计接收信号组中的噪声分量的系统和方法。 例如，本发明的一个实施例提供了一种包括数据检测器电路和噪声分量计算电路的噪声估计电路。 数据检测器电路接收一系列数据样本并提供检测的输出，并且噪声分量计算电路提供电子噪声功率输出和媒体噪声功率输出，每个至少部分地基于所检测的输出和数据系列计算 样品。

公开(公告)号：US08810955B1

公开(公告)日：2014-08-19

申请号：US14179923

申请日：2014-02-13

Applicant: LSI Corporation

Inventor： Xiufeng Song ,  George Mathew

IPC: G11B21/02

CPC classification number: G11B5/6029

Abstract: The disclosure is directed to monitoring changes in fly height for a plurality of read heads. Readback signals based upon a first periodic data sequence and a second periodic data sequence are detected using at least a first read head and a second read head at a first point in time corresponding to a first fly height of each read head and at a second point in time corresponding to a second fly height each read head. The difference between the first fly height and the second fly height of the first read head and the difference between the first fly height and the second fly height of the second read head are determined by comparing the respectively detected readback signals. A summation of the difference values, each having been multiplied by a fusion coefficient, is then used to estimate a global change in fly height.

Abstract translation: 本公开旨在监测多个读取头的飞行高度的变化。 基于第一周期性数据序列和第二周期性数据序列的回读信号使用至少第一读取头和第二读取头，在对应于每个读取头的第一飞行高度的第一时间点和第二点 时间对应于每个读取头的第二飞行高度。 通过比较分别检测的回读信号来确定第一读取头的第一飞行高度和第二飞行高度之间的差异以及第二读取头的第一飞行高度和第二飞行高度之间的差异。 然后使用差分值的总和，每个差值已经乘以融合系数，以估计飞行高度的全局变化。

公开(公告)号：US20140153126A1

公开(公告)日：2014-06-05

申请号：US13705116

申请日：2012-12-04

Applicant: LSI Corporation

Inventor： George Mathew ,  Jongseung Park ,  Erich F. Haratsch ,  Bruce A. Wilson

IPC: G11B20/10

CPC classification number: G11B20/10212 ,  G11B19/045

Abstract: Systems and methods for data processing, and more particularly to estimating or calculating interference between tracks on a storage medium.

Abstract translation: 用于数据处理的系统和方法，更具体地涉及估计或计算存储介质上的轨道之间的干扰。

公开(公告)号：US20140149796A1

公开(公告)日：2014-05-29

申请号：US13686164

申请日：2012-11-27

Applicant: LSI CORPORATION

Inventor： George Mathew ,  Haotian Zhang ,  Haitao Xia ,  Bruce Wilson

IPC: G06F11/08

CPC classification number: G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  H03M13/1105 ,  H03M13/1515 ,  H03M13/3738 ,  H03M13/3753 ,  H03M13/41 ,  H03M13/6331 ,  H03M13/6343

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。