Systems and Methods for Read Head Characterization
    51.
    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
    52.
    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
    53.
    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。

    Systems and Methods for Data Recovery
    54.
    发明申请
    Systems and Methods for Data Recovery 审中-公开
    数据恢复的系统和方法

    公开(公告)号:US20110205653A1

    公开(公告)日:2011-08-25

    申请号:US12712136

    申请日:2010-02-24

    IPC分类号: G11B27/36

    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 described that include a media defect detector and an anchor fixing circuit. The media defect detector is operable to identify a media defect, and the anchor fixing circuit is operable to identify a location relative to the media defect. The location is reproducible.

    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,描述了包括介质缺陷检测器和锚固定电路的电路。 介质缺陷检测器可操作以识别介质缺陷,并且锚固定电路可操作以识别相对于介质缺陷的位置。 该位置是可重现的。

    Preamble acquisition without second order timing loops
    55.
    发明授权
    Preamble acquisition without second order timing loops 有权
    前导采集无二阶定时循环

    公开(公告)号:US07869547B1

    公开(公告)日:2011-01-11

    申请号:US11784195

    申请日:2007-04-04

    IPC分类号: H04L27/06

    CPC分类号: H04L7/08

    摘要: Timing acquisition is performed. A first portion of a preamble having an end is sampled. A first phase value is determined based on the sampled first portion. A second portion of the preamble is sampled and a second phase value is determined based on the sampled second portion. An end phase value is extrapolated based at least in part the first phase value and the second phase value. A clock is adjusted using the extrapolated end phase value.

    摘要翻译: 执行定时采集。 对具有结束的前同步码的第一部分进行采样。 基于采样的第一部分确定第一相位值。 对前导码的第二部分进行采样,并且基于采样的第二部分来确定第二相位值。 至少部分地基于第一相位值和第二相位值来推定结束相位值。 使用外插结束相位值调整时钟。

    Symbol flipping data processor
    57.
    发明授权
    Symbol flipping data processor 有权
    符号翻转数据处理器

    公开(公告)号:US08850295B2

    公开(公告)日:2014-09-30

    申请号:US13363751

    申请日:2012-02-01

    IPC分类号: H03M13/00

    摘要: Various embodiments of the present invention provide systems and methods for a symbol flipping data processor. For example, a symbol flipping data processor is disclosed that includes a data decoder in the symbol flipping data processor operable to perform error checking calculations, and a data detector in the symbol flipping data processor operable to perform symbol flipping in the data detector based at least in part on the error checking calculations, wherein the output of the data processor is generated at least in part based on the symbol flipping in the data detector.

    摘要翻译: 本发明的各种实施例提供了一种符号翻转数据处理器的系统和方法。 例如,公开了一种符号翻转数据处理器,其包括可操作以执行错误校验计算的符号翻转数据处理器中的数据解码器,以及符号翻转数据处理器中的数据检测器,可操作以至少至少在数据检测器中执行符号翻转 部分地基于错误检查计算,其中数据处理器的输出至少部分地基于数据检测器中的符号翻转而被产生。

    Systems and methods for variable thresholding in a pattern detector
    58.
    发明授权
    Systems and methods for variable thresholding in a pattern detector 有权
    模式检测器中可变阈值的系统和方法

    公开(公告)号:US08750447B2

    公开(公告)日:2014-06-10

    申请号:US12917756

    申请日:2010-11-02

    IPC分类号: H04L7/06

    摘要: Various embodiments of the present invention provide systems and methods for pattern identification. As an example, a pattern detection circuit is discussed that include: a distance calculation circuit operable to calculate a distance value corresponding to a difference between a first pattern and a second pattern; a threshold comparator circuit operable to compare the distance value to a variable threshold value; and a threshold value calculation circuit. The threshold value calculation circuit is operable to modify the variable threshold value based at least in part on the distance value.

    摘要翻译: 本发明的各种实施例提供了用于模式识别的系统和方法。 作为示例,讨论了包括:距离计算电路,用于计算对应于第一图案和第二图案之间的差的距离值; 阈值比较器电路,用于将距离值与可变阈值进行比较; 和阈值计算电路。 阈值计算电路可操作以至少部分地基于距离值来修改可变阈值。

    Systems and methods for qualitative media defect determination
    60.
    发明授权
    Systems and methods for qualitative media defect determination 有权
    定性介质缺陷测定的系统和方法

    公开(公告)号:US08612843B2

    公开(公告)日:2013-12-17

    申请号:US13213789

    申请日:2011-08-19

    IPC分类号: G06F7/02

    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 media defect detector circuit. The media defect detector circuit is operable to compare a data input derived from a medium against at least a first defect level to yield a first level output, and a second defect level to yield a second level output; and provide a combination of the first level output and the second level output as a defect quality output. A value of the defect quality output corresponds to a likelihood of a defect of the medium.

    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,公开了包括介质缺陷检测器电路的数据处理电路。 介质缺陷检测器电路可操作以将从介质导出的数据输入与至少第一缺陷级别进行比较以产生第一级输出,以及产生第二缺陷电平以产生第二电平输出; 并且提供第一电平输出和第二电平输出的组合作为缺陷质量输出。 缺陷质量输出的值对应于介质缺陷的可能性。