Systems and methods for gate aware iterative data processing
    23.
    发明授权
    Systems and methods for gate aware iterative data processing 有权
    门感知迭代数据处理的系统和方法

    公开(公告)号:US09058842B2

    公开(公告)日:2015-06-16

    申请号:US13552403

    申请日:2012-07-18

    IPC分类号: G11C27/00 G11B20/10

    CPC分类号: G11B20/10268 G11B20/10509

    摘要: The present inventions are related to systems and methods for iterative data processing scheduling. In one case a data processing system is disclosed that includes a data detector circuit and a data decoder circuit. The data detector circuit is operable to apply a data detection algorithm to a data set to yield a detected output. The data decoder circuit is operable to repeatedly apply a data decoding algorithm to the detected output to yield a decoded output over a number of passes, where the number of passes is within an allowable number of local iterations selected based at least in part on a read gate signal.

    摘要翻译: 本发明涉及用于迭代数据处理调度的系统和方法。 在一种情况下,公开了一种包括数据检测器电路和数据解码器电路的数据处理系统。 数据检测器电路可操作以将数据检测算法应用于数据集以产生检测到的输出。 数据解码器电路可操作以重复地将数据解码算法应用于检测到的输出,以产生经过多次通过的解码输出,其中通过次数在至少部分基于读取的选择的局部迭代的允许数量之内 门信号。

    Systems and methods for utilizing circulant parity in a data processing system
    29.
    发明授权
    Systems and methods for utilizing circulant parity in a data processing system 有权
    在数据处理系统中利用循环奇偶校验的系统和方法

    公开(公告)号:US08458553B2

    公开(公告)日:2013-06-04

    申请号:US12510885

    申请日:2009-07-28

    IPC分类号: H03M13/00

    摘要: Various embodiments of the present invention provide systems and methods for data processing. For example, a method for data processing is disclosed that includes receiving a codeword that has at least a first circulant with a plurality of data bits and a first circulant parity bit, a second circulant with a plurality of data bits and a second circulant parity bit, and one or more codeword parity bits. The methods further include decoding the codeword using the one or more codeword parity bits to access the first circulant and the second circulant, performing a first circulant parity check on the first circulant, and performing a second circulant parity check on the second circulant.

    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,公开了一种用于数据处理的方法,其包括:接收具有至少第一循环的码字,其具有多个数据位和第一循环奇偶校验位,第二循环具有多个数据位和第二循环奇偶校验位 ,以及一个或多个码字奇偶校验位。 所述方法还包括使用所述一个或多个码字奇偶校验比特来解码所述码字,以访问所述第一循环和所述第二循环,对所述第一循环执行第一循环奇偶校验,以及对所述第二循环执行第二循环奇偶校验。

    Amplitude-based approach for detection and classification of hard-disc defect regions
    30.
    发明授权
    Amplitude-based approach for detection and classification of hard-disc defect regions 失效
    基于幅度的硬盘缺陷区域检测和分类方法

    公开(公告)号:US08045283B2

    公开(公告)日:2011-10-25

    申请号:US12729312

    申请日:2010-03-23

    IPC分类号: G11B27/36 G11B5/02

    摘要: In a hard-disc drive, a defect region on the hard disc is classified as corresponding to either thermal asperity (TA) or media defect (MD) by generating two statistical measures. A first measure (e.g., α1) is based on (i) the magnitudes of one or both of signal values (e.g., equalizer input or output signal values) and the corresponding expected values of those signal values and (ii) the signs of one or both of the signal values and the expected signal values. A second measure (e.g., α2) is based on the magnitudes of one or both of the signal values and the expected signal values, but not the signs of either the signal values or the expected signal values. The two measures are then compared to determine whether the defect region corresponds to TA or MD.

    摘要翻译: 在硬盘驱动器中,通过产生两个统计测量值将硬盘上的缺陷区域分类为对应于热粗糙度(TA)或介质缺陷(MD)。 第一测量(例如,α1)基于(i)信号值(例如,均衡器输入或输出信号值)中的一个或两个的大小以及那些信号值的相应期望值,以及(ii)一个 或信号值和预期信号值两者。 第二量度(例如,α2)基于信号值和预期信号值中的一个或两个的幅度,而不是信号值或期望信号值的符号。 然后比较两个测量值以确定缺陷区域是否对应于TA或MD。