Systems and methods for parity sharing data processing
    43.
    发明授权
    Systems and methods for parity sharing data processing 有权
    奇偶校验共享数据处理的系统和方法

    公开(公告)号:US08578241B2

    公开(公告)日:2013-11-05

    申请号:US13269832

    申请日:2011-10-10

    IPC分类号: H03M13/00

    摘要: Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing system is disclosed that includes: a data detector circuit, a low density parity check data decoder circuit, and a processing circuit. The processing circuit is operable to: reconstitute a second encoded sub-codeword from a combination of data including the first encoded sub-codeword and the composite sub-codeword; and correct an error in one of the first encoded sub-codeword and the second encoded sub-codeword based at least in part on a combination of the first encoded sub-codeword, the second encoded sub-codeword, and the composite sub-codeword.

    摘要翻译: 本发明的各种实施例提供了用于数据处理的系统和方法。 例如,公开了一种数据处理系统,其包括:数据检测器电路,低密度奇偶校验数据解码器电路和处理电路。 所述处理电路可操作用于:从包括所述第一编码子码字和所述复合子码字的数据的组合重构第二编码子码字; 以及至少部分地基于所述第一编码子码字,所述第二编码子码字和所述合成子码字的组合来校正所述第一编码子码字和所述第二编码子码字之一中的错误。

    Detector with Soft Pruning
    44.
    发明申请
    Detector with Soft Pruning 有权
    检测器软修剪

    公开(公告)号:US20130111306A1

    公开(公告)日:2013-05-02

    申请号:US13283549

    申请日:2011-10-27

    IPC分类号: H03M13/25 G06F11/10

    摘要: Various embodiments of the present invention provide apparatuses, systems and methods for data detection in a detector with soft pruning. For example, a data detector is disclosed that includes a branch metric calculator operable to calculate branch metrics for transitions between states in a trellis for the data detector, and a branch metric offset circuit operable to apply branch metric offsets to the branch metrics to yield soft pruned branch metrics. The branch metric offsets comprise a range of probability values from zero percent to one hundred percent.

    摘要翻译: 本发明的各种实施例提供了具有软修剪的检测器中的数据检测的装置,系统和方法。 例如,公开了一种数据检测器,其包括分支度量计算器,其可操作以计算用于数据检测器的网格中的状态之间的转换的分支度量;以及分支度量偏移电路,其可操作以将分支度量偏移应用于分支度量以产生软 修剪分支指标。 分支度量偏移包括从零百分之一百百分率的概率值的范围。

    Systems and Methods for User Data Based Fly Height Calculation
    45.
    发明申请
    Systems and Methods for User Data Based Fly Height Calculation 有权
    基于用户数据的飞行高度计算系统与方法

    公开(公告)号:US20130021690A1

    公开(公告)日:2013-01-24

    申请号:US13185562

    申请日:2011-07-19

    IPC分类号: G11B21/12 G11B5/09 G11B20/18

    CPC分类号: G11B5/6029

    摘要: Various embodiments of the present invention provide systems and methods for calculating and/or modifying fly height. For example, a circuit for calculating fly height is disclosed that includes: a first pattern detector circuit, a second pattern detector circuit, a first pattern fly height calculation circuit, a second pattern fly height calculation circuit, a first averaging circuit, a second averaging circuit, and a combining circuit.

    摘要翻译: 本发明的各种实施例提供了用于计算和/或修改飞行高度的系统和方法。 例如,公开了一种用于计算飞行高度的电路,其包括:第一模式检测器电路,第二模式检测器电路,第一模式飞行高度计算电路,第二模式飞行高度计算电路,第一平均电路,第二平均 电路和组合电路。

    Systems and methods for data recovery using enhanced sync mark location
    46.
    发明授权
    Systems and methods for data recovery using enhanced sync mark location 有权
    使用增强的同步标记位置进行数据恢复的系统和方法

    公开(公告)号:US08345369B2

    公开(公告)日:2013-01-01

    申请号:US12887317

    申请日:2010-09-21

    IPC分类号: G11B5/09

    摘要: Various embodiments of the present invention provide systems and methods for identifying a reproducible location on a storage medium. As an example, a circuit is discussed that includes a data storage circuit, a pattern comparison circuit, and a threshold comparison circuit. The data storage circuit is operable to store a first set of data samples corresponding to a region of interest. The pattern comparison circuit is operable to compare a subset of the first set of data samples with a subset of a second set of data samples corresponding to the region of interest. The pattern comparison circuit is operable to yield a match value corresponding to a degree of similarity between the first set of data samples with the subset of a second set of data samples. The threshold comparison circuit is operable to indicate an anchor point based at least in part on the magnitude of the match value relative to a threshold value.

    摘要翻译: 本发明的各种实施例提供用于识别存储介质上的可再现位置的系统和方法。 作为示例,讨论了包括数据存储电路,模式比较电路和阈值比较电路的电路。 数据存储电路可操作以存储对应于感兴趣区域的第一组数据样本。 模式比较电路可操作以将第一组数据样本的子集与对应于感兴趣区域的第二组数据样本的子集进行比较。 模式比较电路可操作以产生与第一组数据样本与第二组数据样本的子集之间的相似度对应的匹配值。 阈值比较电路可操作以至少部分地基于相对于阈值的匹配值的大小来指示锚定点。

    Systems and Methods for Servo Data Detection
    47.
    发明申请
    Systems and Methods for Servo Data Detection 有权
    伺服数据检测系统与方法

    公开(公告)号:US20120281305A1

    公开(公告)日:2012-11-08

    申请号:US13100021

    申请日:2011-05-03

    IPC分类号: G11B5/09

    CPC分类号: G11B5/59644 G11B5/59616

    摘要: Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is disclosed that includes a codeword detector circuit operable to apply a codeword based data detection algorithm to a data input corresponding to an encoded servo data region to yield a detected output, and a servo address mark processing circuit operable to identify a pre-defined pattern in the detected output.

    摘要翻译: 本发明的各种实施例提供了用于数据处理的系统和方法。 作为示例,公开了一种数据处理电路,其包括码字检测器电路,其可操作以将基于码字的数据检测算法应用于与编码的伺服数据区域相对应的数据输入,以产生检测的输出,以及可操作的伺服地址标记处理电路 以识别检测到的输出中的预定义模式。

    Systems and Methods for Read Head Characterization
    48.
    发明申请
    Systems and Methods for Read Head Characterization 有权
    读取头表征的系统和方法

    公开(公告)号:US20120281304A1

    公开(公告)日:2012-11-08

    申请号:US13100063

    申请日:2011-05-03

    申请人: Ming Jin Haitao Xia

    发明人: Ming Jin Haitao Xia

    IPC分类号: G11B27/36

    摘要: Various embodiments of the present invention provide systems and methods for read sensor characterization. As an example, a data storage device is disclosed that includes a storage medium, a read/write head assembly disposed in relation to the storage medium, and a track width setting circuit. The track width setting circuit is operable to: write data to at least a first track and a second track on the storage medium, read data from the second track, determine an estimated track offset where interference from the data written to the first track is insubstantial, and modify at least the second track width based at least in part on the estimated track offset. The first track is a first track width and the second track is a second track width.

    摘要翻译: 本发明的各种实施例提供用于读取传感器表征的系统和方法。 作为示例,公开了包括存储介质,相对于存储介质设置的读/写头组件和轨道宽度设置电路的数据存储设备。 轨道宽度设置电路可操作用于:将数据写入存储介质上的至少第一磁道和第二磁道,从第二磁道读取数据,确定估计的磁道偏移量,其中写入第一磁道的数据的干扰是非实质的 并且至少部分地基于估计的轨道偏移来修改至少第二轨道宽度。 第一轨道是第一轨道宽度,第二轨道是第二轨道宽度。

    Systems and Methods for Sync Mark Detection
    49.
    发明申请
    Systems and Methods for Sync Mark Detection 有权
    用于同步标记检测的系统和方法

    公开(公告)号:US20120236428A1

    公开(公告)日:2012-09-20

    申请号:US13050048

    申请日:2011-03-17

    IPC分类号: G11B5/09 G01R25/00 G06F19/00

    CPC分类号: G11B5/59616

    摘要: Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is disclosed that includes an equalizer circuit and a data detection circuit. The equalizer circuit is operable to filter a series of samples based at least in part on a filter coefficient and to provide a corresponding series of filtered samples. The data detection circuit includes: a core data detector circuit and a coefficient determination circuit. The core data detector circuit is operable to perform a data detection process on the series of filtered samples and to provide a most likely path and a next most likely path. The coefficient determination circuit operable to update the filter coefficient based at least in part on the most likely path and the next most likely path.

    摘要翻译: 本发明的各种实施例提供了用于数据处理的系统和方法。 作为示例,公开了包括均衡器电路和数据检测电路的数据处理电路。 均衡器电路可操作以至少部分地基于滤波器系数对一系列样本进行滤波,并提供相应的一系列滤波样本。 数据检测电路包括:核心数据检测器电路和系数确定电路。 核心数据检测器电路可操作以对一系列经滤波的样本执行数据检测处理,并提供最可能的路径和下一个最可能的路径。 系数确定电路可操作以至少部分地基于最可能的路径和下一个最可能的路径来更新滤波器系数。

    STORAGE MEDIA DEFECT DETECTION
    50.
    发明申请
    STORAGE MEDIA DEFECT DETECTION 有权
    存储介质缺陷检测

    公开(公告)号:US20120113782A1

    公开(公告)日:2012-05-10

    申请号:US13291017

    申请日:2011-11-07

    IPC分类号: G11B27/36

    摘要: Detecting a defect on a storage device is disclosed. Detecting includes receiving a signal read from a storage device, sampling the signal to obtain a set of signal samples, wherein the sampling starts at an arbitrary time, computing a defect value for a defect type using the set of signal samples, comparing the defect value with a threshold associated with the defect type, determining whether there is a defect of the defect type based at least in part on the comparison, and in the event that a defect is detected, outputting an indication associated with the defect.

    摘要翻译: 公开了检测存储设备上的缺陷。 检测包括接收从存储设备读取的信号,对信号进行采样以获得一组信号样本,其中采样在任意时间开始,使用该组信号样本计算缺陷类型的缺陷值,比较缺陷值 具有与缺陷类型相关联的阈值,至少部分地基于比较来确定是否存在缺陷类型的缺陷,并且在检测到缺陷的情况下,输出与缺陷相关联的指示。