Systems and Methods for Retry Sync Mark Detection
    1.
    发明申请
    Systems and Methods for Retry Sync Mark Detection 有权
    用于重试同步标记检测的系统和方法

    公开(公告)号:US20120084336A1

    公开(公告)日:2012-04-05

    申请号:US12894221

    申请日:2010-09-30

    IPC分类号: G06F17/10

    摘要: Various embodiments of the present invention provide systems and methods for sync mark detection. As an example, a sync mark detection circuit is discussed that includes a storage circuit, a plurality of noise predictive filter circuits, and a controller circuit. The storage circuit is operable to store a data input as a stored input. The plurality of noise predictive filters are operable to receive a processing input. At least one of the noise predictive filters is selectably modifiable to either increase the probability of finding a sync mark in the processing input or to maintain a baseline probability of finding the sync mark in the processing input. The controller circuit is operable to determine an operational mode that may be a standard operational mode, a bit flipping mode, or a filter modification mode.

    摘要翻译: 本发明的各种实施例提供用于同步标记检测的系统和方法。 作为示例,讨论了包括存储电路,多个噪声预测滤波器电路和控制器电路的同步标记检测电路。 存储电路可操作以将数据输入存储为存储的输入。 多个噪声预测滤波器可操作以接收处理输入。 噪声预测滤波器中的至少一个可选地可修改以增加在处理输入中找到同步标记的概率,或者维持在处理输入中找到同步标记的基线概率。 控制器电路可操作以确定可以是标准操作模式,位翻转模式或滤波器修改模式的操作模式。

    Systems and methods for retry sync mark detection
    2.
    发明授权
    Systems and methods for retry sync mark detection 有权
    用于重试同步标记检测的系统和方法

    公开(公告)号:US08566378B2

    公开(公告)日:2013-10-22

    申请号:US12894221

    申请日:2010-09-30

    IPC分类号: G06F17/10

    摘要: Various embodiments of the present invention provide systems and methods for sync mark detection. As an example, a sync mark detection circuit is discussed that includes a storage circuit, a plurality of noise predictive filter circuits, and a controller circuit. The storage circuit is operable to store a data input as a stored input. The plurality of noise predictive filters are operable to receive a processing input. At least one of the noise predictive filters is selectably modifiable to either increase the probability of finding a sync mark in the processing input or to maintain a baseline probability of finding the sync mark in the processing input. The controller circuit is operable to determine an operational mode that may be a standard operational mode, a bit flipping mode, or a filter modification mode.

    摘要翻译: 本发明的各种实施例提供用于同步标记检测的系统和方法。 作为示例,讨论了包括存储电路,多个噪声预测滤波器电路和控制器电路的同步标记检测电路。 存储电路可操作以将数据输入存储为存储的输入。 多个噪声预测滤波器可操作以接收处理输入。 噪声预测滤波器中的至少一个可选地可修改以增加在处理输入中找到同步标记的概率,或者维持在处理输入中找到同步标记的基线概率。 控制器电路可操作以确定可以是标准操作模式,位翻转模式或滤波器修改模式的操作模式。

    Systems and methods for data detection using distance based tuning
    6.
    发明授权
    Systems and methods for data detection using distance based tuning 有权
    使用基于距离调谐的数据检测系统和方法

    公开(公告)号:US08699167B2

    公开(公告)日:2014-04-15

    申请号:US13310028

    申请日:2011-12-02

    CPC分类号: H04L25/03254 H04L25/0305

    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。

    Systems and methods for enhanced media defect detection
    8.
    发明授权
    Systems and methods for enhanced media defect detection 有权
    增强介质缺陷检测的系统和方法

    公开(公告)号:US08516348B2

    公开(公告)日:2013-08-20

    申请号:US13495922

    申请日:2012-06-13

    IPC分类号: H03M13/00

    摘要: Various embodiments of the present invention provide systems and methods for detecting storage medium defects. As one example, a media defect detection system is disclosed that includes a data detector circuit that applies a detection algorithm to the data input and provides a hard output and a soft output. A first circuit combines a first derivative of the hard output with a derivative of the data input to yield a first combined signal. A second circuit combines a second derivative of the hard output with a derivative of the first combined signal to yield a second combined signal. A third circuit combines a derivative of the soft output with the second combined signal and a threshold value to yield a defect signal.

    摘要翻译: 本发明的各种实施例提供了用于检测存储介质缺陷的系统和方法。 作为一个示例,公开了一种媒体缺陷检测系统,其包括将检测算法应用于数据输入并提供硬输出和软输出的数据检测器电路。 第一电路将硬输出的一阶导数与数据输入的导数组合以产生第一组合信号。 第二电路将硬输出的二阶导数与第一组合信号的导数组合以产生第二组合信号。 第三电路将软输出的导数与第二组合信号和阈值组合以产生缺陷信号。

    Systems and methods for utilizing circulant parity in a data processing system
    9.
    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。

    Systems and Methods for Late Stage Precoding
    10.
    发明申请
    Systems and Methods for Late Stage Precoding 审中-公开
    晚期预编码系统与方法

    公开(公告)号:US20130111294A1

    公开(公告)日:2013-05-02

    申请号:US13284819

    申请日:2011-10-28

    IPC分类号: H03M13/29 G06F11/10

    摘要: Various embodiments of the present invention provide systems, devices and methods for data processing. As an example, a data processing device is discussed that include a data encoding system and a data decoding system. The data encoding system is operable to receive a data input, and to: apply a maximum transition run length encoding to the data input to yield a run length limited output; apply a low density parity check encoding algorithm to the run length limited output to yield a number of original parity bits; apply a precode algorithm to the original parity bits to yield precoded parity bits; and combine the precoded parity bits and a derivative of the run length limited output to yield an output data set.

    摘要翻译: 本发明的各种实施例提供用于数据处理的系统,设备和方法。 作为示例,讨论了包括数据编码系统和数据解码系统的数据处理装置。 数据编码系统可操作以接收数据输入,并且:对数据输入应用最大转换行程长度编码以产生行长限制输出; 将低密度奇偶校验编码算法应用于运行长度限制输出以产生多个原始奇偶校验位; 对原始奇偶校验位应用预编码算法以产生预编码奇偶校验位; 并将预编码的奇偶校验位和游程长度限制输出的导数组合以产生输出数据集。