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    Timing Error Detector with Diversity Loop Detector Decision Feedback
    12.
    发明申请
    Timing Error Detector with Diversity Loop Detector Decision Feedback 有权
    具有分集环路检测器判定反馈的定时误差检测器

    公开(公告)号：US20140362463A1

    公开(公告)日：2014-12-11

    申请号：US13941464

    申请日：2013-07-13

    Applicant: LSI Corporation

    Inventor： Bruce Wilson ,  Yang Han ,  Yu Kou ,  Rui Cao

    IPC: G11B20/14 ,  G11B5/09

    CPC classification number: G11B5/09 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10222 ,  G11B20/1403 ,  G11B2220/2516

    Abstract: Aspects of the disclosure pertain to an apparatus for detecting timing errors including an analog to digital converter circuit, a diversity loop detector and a timing error calculation circuit. The analog to digital converter circuit is operable to convert an input signal into a series of digital samples. The diversity loop detector is operable to apply a data detection algorithm to a plurality of signals derived from the series of digital samples at different phase offsets, to select one of the phase offsets, and to yield a detected output with the selected phase offset. The timing error calculation circuit is operable to calculate a timing error of the analog to digital converter circuit based at least in part on the selected phase offset.

    Abstract translation: 本公开的方面涉及用于检测定时误差的装置，包括模数转换器电路，分集环路检测器和定时误差计算电路。 模数转换器电路可操作以将输入信号转换为一系列数字采样。 分集环路检测器可操作以将数据检测算法应用于在不同相位偏移处从一系列数字样本导出的多个信号，以选择相位偏移中的一个，并产生具有所选相位偏移的检测输出。 定时误差计算电路可用于至少部分地基于所选择的相位偏移来计算模数转换器电路的定时误差。

    Automatic on-drive sync-mark search and threshold adjustment
    13.
    发明授权
    Automatic on-drive sync-mark search and threshold adjustment 有权
    自动驱动器同步标记搜索和阈值调整

    公开(公告)号：US08837263B1

    公开(公告)日：2014-09-16

    申请号：US13850942

    申请日：2013-03-26

    Applicant: LSI Corporation

    Inventor： Rui Cao ,  Haitao Xia ,  Yu Kou

    IPC: G11B20/20 ,  G11B27/30

    CPC classification number: G11B27/3027 ,  G11B20/10 ,  G11B20/1403 ,  G11B27/10

    Abstract: A hard disk drive includes a processor to automatically adjust a threshold level for finding sync-marks. The processor determines all possible sync-mark patterns for a particular pattern length and analyzes each pattern with reference to real world data. The pattern with the largest distance gap is used. The threshold level is then adjusted dynamically to produce the lowest possible failure rate for the given pattern.

    Abstract translation: 硬盘驱动器包括一个处理器，用于自动调整阈值水平以查找同步标记。 处理器确定特定图案长度的所有可能的同步标记图案，并参考真实世界数据分析每个图案。 使用距离最大的图案。 然后动态调整阈值电平，以产生给定模式的最低可能故障率。

    Systems and methods for multi-head balancing in a storage device
    17.
    发明授权
    Systems and methods for multi-head balancing in a storage device 有权
    存储设备中多头平衡的系统和方法

    公开(公告)号：US09218845B2

    公开(公告)日：2015-12-22

    申请号：US14148306

    申请日：2014-01-06

    Applicant: LSI Corporation

    Inventor： Lu Pan ,  Haitao Xia ,  Haotian Zhang ,  Rui Cao

    IPC: G11B5/09 ,  G11B20/10 ,  G11B20/12

    CPC classification number: G11B20/10009 ,  G11B20/10046 ,  G11B20/10305 ,  G11B20/10361 ,  G11B20/10388 ,  G11B20/1217

    Abstract: Systems and method relating generally to data processing, and more particularly to systems and methods for utilizing multiple data streams for data recovery from a storage device. As an example, a data processing system is discussed that includes a first read head and a second read head each operable to sense information on a storage medium. A synthesizer circuit is operable to determine a quality metric based upon a signal to noise ratio of a first preamble pattern compared with a signal to noise ratio of a second preamble pattern. A balancing circuit is operable to generate a composite output as a combination of a first data set derived from the first read head a second data set derived from the second read head based at least in part on the quality metric.

    Abstract translation: 一般涉及数据处理的系统和方法，更具体地涉及用于利用多个数据流进行数据从存储设备的数据恢复的系统和方法。 作为示例，讨论了包括第一读取头和第二读取头的数据处理系统，每个读取头和第二读取头可操作以感测存储介质上的信息。 合成器电路可操作以基于与第二前导码模式的信噪比相比较的第一前导码模式的信噪比来确定质量度量。 平衡电路可操作以至少部分地基于质量度量来生成作为从第一读取头导出的从第二读取头导出的第二数据集的第一数据集合的组合的复合输出。

    Automatic On-Drive Sync-Mark Search and Threshold Adjustment
    18.
    发明申请
    Automatic On-Drive Sync-Mark Search and Threshold Adjustment 有权
    自动驱动器同步标记搜索和阈值调整

    公开(公告)号：US20140286149A1

    公开(公告)日：2014-09-25

    申请号：US13850942

    申请日：2013-03-26

    Applicant: LSI CORPORATION

    Inventor： Rui Cao ,  Haitao Xia ,  Yu Kou

    IPC: G11B27/30

    CPC classification number: G11B27/3027 ,  G11B20/10 ,  G11B20/1403 ,  G11B27/10

    Abstract: A hard disk drive includes a processor to automatically adjust a threshold level for finding sync-marks. The processor determines all possible sync-mark patterns for a particular pattern length and analyzes each pattern with reference to real world data. The pattern with the largest distance gap is used. The threshold level is then adjusted dynamically to produce the lowest possible failure rate for the given pattern.

    Abstract translation: 硬盘驱动器包括一个处理器，用于自动调整阈值水平以查找同步标记。 处理器确定特定图案长度的所有可能的同步标记图案，并参考真实世界数据分析每个图案。 使用距离最大的图案。 然后动态调整阈值电平，以产生给定模式的最低可能故障率。

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