SYNC MARK DETECTION USING BRANCH METRICS FROM DATA DETECTOR
    1.
    发明申请
    SYNC MARK DETECTION USING BRANCH METRICS FROM DATA DETECTOR 有权
    从数据检测器使用分支量测的SYNC MARK检测

    公开(公告)号:US20140185159A1

    公开(公告)日:2014-07-03

    申请号:US13728443

    申请日:2012-12-27

    申请人: LSI CORPORATION

    IPC分类号: G11B20/14

    CPC分类号: G11B20/10222

    摘要: Methods and apparatus are provided for detecting a sync mark in a storage system, such as a hard disk drive. A sync mark is detected in a storage system by obtaining one or more branch metrics from a data detector in the storage system; generating one or more sync mark metrics using the one or more branch metrics from the data detector; and identifying the sync mark based on the sync mark metrics. An input data set is optionally compared with a plurality of portions of a sync mark pattern to yield corresponding comparison values and the comparison values can be summed to obtain at least one result. A sync mark found signal is asserted based upon the at least one result.

    摘要翻译: 提供了用于检测诸如硬盘驱动器的存储系统中的同步标记的方法和装置。 在存储系统中通过从存储系统中的数据检测器获得一个或多个分支度量来检测同步标记; 使用来自所述数据检测器的所述一个或多个分支度量来生成一个或多个同步标记度量; 以及基于同步标记度量识别同步标记。 输入数据组可选地与同步标记图案的多个部分进行比较,以产生相应的比较值,并且可以将比较值相加以获得至少一个结果。 基于至少一个结果来确定发现同步标记信号。

    Decoder With Targeted Symbol Flipping Recovery Of Miscorrected Codewords
    2.
    发明申请
    Decoder With Targeted Symbol Flipping Recovery Of Miscorrected Codewords 审中-公开
    具有目标符号的解码器翻转未修改的代码字的恢复

    公开(公告)号:US20160087653A1

    公开(公告)日:2016-03-24

    申请号:US14444916

    申请日:2014-07-28

    申请人: LSI Corporation

    IPC分类号: H03M13/37 H03M13/11

    摘要: An apparatus for decoding data includes a decoder circuit operable to apply a decoding algorithm to a decoder input to yield a codeword, a convergence detection circuit operable to determine whether parity checks are satisfied by the decoder input and to identify unsatisfied parity checks in the decoder circuit, and a symbol flipping controller operable to change values of at least one symbol in the decoder input based on information about the unsatisfied parity checks. The decoder circuit is restarted to process the decoder input with the changed values. The information about the unsatisfied parity checks is obtained at each of a number of local decoding iterations in the decoder circuit.

    摘要翻译: 一种用于解码数据的装置包括:解码器电路,可操作以将解码算法应用于解码器输入以产生码字;会聚检测电路,用于确定奇偶检验是否被解码器输入所满足,并识别解码器电路中的不满足的奇偶校验 以及符号翻转控制器,其可操作以基于关于不满足的奇偶校验检查的信息来改变解码器输入中的至少一个符号的值。 解码器电路被重新启动以用改变的值处理解码器输入。 在解码器电路中的多个局部解码迭代中的每一个处获得关于不满足奇偶校验的信息。

    Systems and methods for data retry using averaging process
    3.
    发明授权
    Systems and methods for data retry using averaging process 有权
    使用平均过程进行数据重试的系统和方法

    公开(公告)号:US09190104B2

    公开(公告)日:2015-11-17

    申请号:US13802627

    申请日:2013-03-13

    申请人: LSI Corporation

    IPC分类号: G06F17/10 G11B20/10

    CPC分类号: G11B20/10046

    摘要: Embodiments are related to systems and methods for data processing, and more particularly to systems and methods for calibration during data processing. As an example, a data processing system is discussed that includes a sample averaging circuit operable to average digital samples from an analog to digital converter circuit over multiple instances of an analog input to yield an X-average output, and a selector circuit operable to select one of the digital samples or the X-average output as a processing output.

    摘要翻译: 实施例涉及用于数据处理的系统和方法,更具体地涉及在数据处理期间用于校准的系统和方法。 作为示例,讨论了一种数据处理系统,其包括采样平均电路,其可操作以在模拟输入的多个实例上平均来自模数转换器电路的数字采样以产生X平均输出,以及可操作以选择 数字样本之一或X平均输出作为处理输出。

    Sync mark detection using branch metrics from data detector
    4.
    发明授权
    Sync mark detection using branch metrics from data detector 有权
    使用来自数据检测器的分支度量进行同步标记检测

    公开(公告)号:US08810943B2

    公开(公告)日:2014-08-19

    申请号:US13728443

    申请日:2012-12-27

    申请人: LSI Corporation

    IPC分类号: G11B5/09

    CPC分类号: G11B20/10222

    摘要: Methods and apparatus are provided for detecting a sync mark in a storage system, such as a hard disk drive. A sync mark is detected in a storage system by obtaining one or more branch metrics from a data detector in the storage system; generating one or more sync mark metrics using the one or more branch metrics from the data detector; and identifying the sync mark based on the sync mark metrics. An input data set is optionally compared with a plurality of portions of a sync mark pattern to yield corresponding comparison values and the comparison values can be summed to obtain at least one result. A sync mark found signal is asserted based upon the at least one result.

    摘要翻译: 提供了用于检测诸如硬盘驱动器的存储系统中的同步标记的方法和装置。 在存储系统中通过从存储系统中的数据检测器获得一个或多个分支度量来检测同步标记; 使用来自所述数据检测器的所述一个或多个分支度量来生成一个或多个同步标记度量; 以及基于同步标记度量识别同步标记。 输入数据组可选地与同步标记图案的多个部分进行比较以产生对应的比较值,并且可以将比较值相加以获得至少一个结果。 基于至少一个结果来确定发现同步标记信号。