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    Iterative decoding using adaptive feedback
    33.
    发明授权
    Iterative decoding using adaptive feedback 有权
    使用自适应反馈的迭代解码

    公开(公告)号：US08687310B1

    公开(公告)日：2014-04-01

    申请号：US13687688

    申请日：2012-11-28

    Applicant: LSI Corporation

    Inventor： Fan Zhang ,  Jun Xiao ,  Wu Chang

    IPC: G11B5/035

    CPC classification number: G11B20/10361 ,  G11B20/10268

    Abstract: An apparatus comprises read channel circuitry and signal processing circuitry associated with the read channel circuitry. The signal processing circuitry is configured to: equalize a digital data signal; align the equalized digital data signal; determine a detector reliability metric based at least in part on the aligned equalized digital data signal; perform an iterative decoding process to determine a decoded digital data signal using the detector reliability metric; adjust the aligned equalized digital data signal using the decoded digital data signal; and repeat at least determining the detector reliability metric and performing the iterative decoding process using the adjusted equalized digital data signal.

    Abstract translation: 一种装置包括读通道电路和与读通道电路相关联的信号处理电路。 信号处理电路被配置为：均衡数字数据信号; 对齐均衡的数字数据信号; 至少部分地基于对准的均衡数字数据信号确定检测器可靠性度量; 执行迭代解码处理以使用检测器可靠性度量来确定解码的数字数据信号; 使用解码的数字数据信号调整对准的均衡数字数据信号; 并重复至少确定检测器可靠性度量并使用经调整的均衡数字数据信号执行迭代解码处理。

    Systems and methods for lost synchronization data set reprocessing
    34.
    发明授权
    Systems and methods for lost synchronization data set reprocessing 有权
    丢失同步数据集再处理的系统和方法

    公开(公告)号：US09323625B2

    公开(公告)日：2016-04-26

    申请号：US14080935

    申请日：2013-11-15

    Applicant: LSI Corporation

    Inventor： Shu Li ,  Fan Zhang ,  Jun Xiao ,  Jefferson Singleton

    IPC: H04L7/04 ,  G06F11/14 ,  G11B5/09 ,  G11B20/12 ,  G06F17/30

    CPC classification number: G06F11/1469 ,  G06F17/30424 ,  G06F17/30581 ,  G11B5/09 ,  G11B20/1217 ,  G11B2020/1287

    Abstract: Systems and method relating generally to data processing, and more particularly to systems and methods for segmenting a data set and recovering the segmented data set. In one particular example, a method is disclosed that includes: querying an input data set for an actual sync mark; forcing a proxy sync mark where the actual sync mark is not found in the input data set; applying data processing to the input data set to yield a processed output; correlating a potion of the processed output with a corresponding portion of the input data set to yield a true sync location; calculating a difference between the true sync location and the location of the forced sync mark to yield an offset; re-forcing the proxy sync mark based upon the offset; and re-applying the data processing to the input data set aligned using the re-forced proxy sync mark to yield a re-processed output.

    Abstract translation: 一般涉及数据处理的系统和方法，更具体地涉及用于分割数据集并恢复分段数据集的系统和方法。 在一个具体示例中，公开了一种方法，其包括：查询实际同步标记的输入数据集; 强制代理同步标记，其中在输入数据集中没有找到实际的同步标记; 将数据处理应用于输入数据集以产生经处理的输出; 将处理的输出的一部分与输入数据集的相应部分相关联以产生真正的同步位置; 计算真实同步位置和强制同步标记的位置之间的差异以产生偏移; 基于偏移重新强制代理同步标记; 并且将数据处理重新应用于使用重新强制代理同步标记对齐的输入数据集，以产生重新处理的输出。

    Systems and methods for multi-algorithm concatenation encoding and decoding
    35.
    发明授权
    Systems and methods for multi-algorithm concatenation encoding and decoding 有权
    多算法级联编码和解码的系统和方法

    公开(公告)号：US09219503B2

    公开(公告)日：2015-12-22

    申请号：US14072604

    申请日：2013-11-05

    Applicant: LSI Corporation

    Inventor： Shu Li ,  Fan Zhang ,  Bruce A. Wilson ,  Jun Xiao

    IPC: H03M13/00 ,  H03M13/29 ,  H03M13/11 ,  H03M13/15

    CPC classification number: H03M13/2942 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/2906 ,  H03M13/2909 ,  H03M13/293 ,  H03M13/2957 ,  H03M13/6343

    Abstract: Systems and method relating generally to data processing, and more particularly to systems and methods for encoding and decoding information. Some embodiments include one or both of a multi-algorithm data encoder circuit and/or a multi-algorithm data decoder circuit. In some cases, a first algorithm encoding is applied on a first section by section basis to a user data set yield an encoded portion; and a second algorithm encoding is applied on a second section by section basis to a data set derived from a subset of the encoded portion.

    Abstract translation: 一般涉及数据处理的系统和方法，更具体地涉及用于编码和解码信息的系统和方法。 一些实施例包括多算法数据编码器电路和/或多算法数据解码器电路中的一个或两个。 在一些情况下，第一算法编码在第一个逐个部分的基础上应用于用户数据集，产生一个编码部分; 并且第二算法编码被应用于从编码部分的子集导出的数据集的第二部分。

    Real time MRA estimation and correction using ADC samples
    40.
    发明授权
    Real time MRA estimation and correction using ADC samples 有权
    使用ADC样本的实时MRA估计和校正

    公开(公告)号：US08760783B2

    公开(公告)日：2014-06-24

    申请号：US13624234

    申请日：2012-09-21

    Applicant: LSI Corporation

    Inventor： Ming Jin ,  Jun Xiao ,  Fan Zhang ,  Haitao Xia

    IPC: G11B20/18

    CPC classification number: G11B5/09 ,  G11B20/10037

    Abstract: Methods and systems for estimating MRA for a hard disk drive are described. The methods and systems described herein provide for real time estimating and correcting magneto-resistive head asymmetry (MRA) in a hard disk drive using analog-to-digital convertor (ADC) samples or counts. Generally, ADC outputs may be obtained by injecting MRA at known values, where an estimated MRA may be derived in real time by applying an equation using particular ADC output values. Once an estimated MRA is obtained, MRA correction may be performed when the estimated MRA is larger than a threshold value, such as by adjusting a channel MRA compensation coefficient.

    Abstract translation: 描述用于估计硬盘驱动器的MRA的方法和系统。 本文描述的方法和系统提供使用模数转换器（ADC）采样或计数来实时估计和校正硬盘驱动器中的磁阻头不对称（MRA）。 通常，可以通过以已知值注入MRA来获得ADC输出，其中可以通过使用特定ADC输出值应用方程实时导出估计MRA。 一旦获得估计的MRA，当估计的MRA大于阈值时，例如通过调整通道MRA补偿系数，可以执行MRA校正。

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