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    Systems and Methods for Medium Proximity Detection in a Read Channel
    2.
    发明申请
    Systems and Methods for Medium Proximity Detection in a Read Channel 有权
    读通道中接近检测的系统和方法

    公开(公告)号：US20130148230A1

    公开(公告)日：2013-06-13

    申请号：US13690435

    申请日：2012-11-30

    Applicant: LSI Corporation

    Inventor： Ming Jin ,  Erich F. Haratsch ,  Jason S. Goldberg ,  Kurt J. Worrell ,  Scott M. Dziak ,  Jeffrey P. Grundvig

    IPC: G11B27/36

    CPC classification number: G11B27/36 ,  G11B5/6076 ,  G11B2220/2516

    Abstract: A contact event between a sensing device and a storage medium is detected by receiving a signal indicating a physical proximity between the sensing device and the storage medium; generating a plurality of frequency bin outputs; comparing one or more frequency bin outputs to a corresponding first level threshold to yield a corresponding comparator output; summing the comparator output with at least one prior instance of the comparator output to yield an aggregated value; comparing the aggregated value to an aggregate threshold to yield an aggregate output; and generating a contact event output if one or more of a first group of the plurality of frequency bin outputs has an associated aggregate output set to a predefined binary value and a predefined minimum number of a second group of the plurality of frequency bin outputs has an associated aggregate output set to a predefined binary value.

    Abstract translation: 通过接收指示感测装置和存储介质之间的物理接近的信号来检测感测装置和存储介质之间的接触事件; 产生多个频率仓输出; 将一个或多个频率仓输出与相应的第一电平阈值进行比较以产生相应的比较器输出; 将比较器输出与比较器输出的至少一个先前实例相加以产生聚合值; 将聚合值与聚合阈值进行比较以产生总产出; 以及如果所述多个频率仓输出中的第一组中的一个或多个具有设置为预定二进制值的相关联的聚合输出并且所述多个频率仓输出中的第二组的预定最小数量具有 关联的聚合输出设置为预定义的二进制值。

    Method for Format Savings in Coherently Written Fragmented Sectors
    4.
    发明申请
    Method for Format Savings in Coherently Written Fragmented Sectors 有权
    在相干书面片段中节省格式的方法

    公开(公告)号：US20140281818A1

    公开(公告)日：2014-09-18

    申请号：US13831246

    申请日：2013-03-14

    Applicant: LSI CORPORATION

    Inventor： Scott M. Dziak ,  Jeffrey P. Grundvig ,  Jason D. Byrne

    IPC: G11B27/30 ,  G11B20/18 ,  G11B20/12 ,  G06F11/10

    CPC classification number: G11B27/3027 ,  G06F11/1076 ,  G11B20/1217 ,  G11B2020/10916 ,  G11B2020/1232

    Abstract: A method and system for performing a shortened acquire cycle for at least one fragment of at least one data sector having coherently written fragments, the coherently written fragments being written during a single rotation of a storage medium. The method includes performing a full acquire cycle for a first fragment of a particular data sector of the at least one data sector. The method further includes reusing at least a portion of the acquisition information of the first fragment to perform a shortened acquire cycle for at least one subsequent coherently written fragment. The method also includes reusing at least a portion of the acquisition information of the first fragment to perform a shortened acquire cycle for at least one subsequent coherently written fragment. Additionally, the method includes performing the shortened acquire cycle for the at least one subsequent coherently written fragment.

    Abstract translation: 一种用于对具有相干写入的片段的至少一个数据扇区的至少一个片段执行缩短的获取周期的方法和系统，所述相干写入的片段在存储介质的单次旋转期间被写入。 该方法包括对至少一个数据扇区的特定数据扇区的第一片段执行完整采集周期。 该方法还包括重新使用第一片段的获取信息的至少一部分来对至少一个随后的相干写入片段执行缩短的获取周期。 该方法还包括重新利用第一片段的获取信息的至少一部分来对至少一个随后的相干写入片段执行缩短的获取周期。 另外，该方法包括对所述至少一个随后的相干写入片段执行缩短的获取周期。

    Two dimensional magnetic recording servo system phase alignment
    5.
    发明授权
    Two dimensional magnetic recording servo system phase alignment 有权
    二维磁记录伺服系统相位对准

    公开(公告)号：US08861111B1

    公开(公告)日：2014-10-14

    申请号：US14243810

    申请日：2014-04-02

    Applicant: LSI Corporation

    Inventor： Yu Liao ,  Jeffrey P. Grundvig ,  Richard Rauschmayer

    IPC: G11B5/09

    CPC classification number: G11B5/09 ,  G11B5/3977 ,  G11B5/4886 ,  G11B5/59644

    Abstract: A servo system includes a first equalizer circuit operable to filter digital servo data samples derived from a first read head to yield first equalized data, a second equalizer circuit operable to filter digital servo data samples derived from a second read head to yield second equalized data, a first interpolator operable to interpolate the first equalized data to yield a number of first interpolated outputs at different phases, a second interpolator operable to interpolate the second equalized data to yield a number of second interpolated outputs at different phases, and a phase tracking and signal combining circuit operable to select and combine most closely aligned signals from the first interpolated outputs and the second interpolated outputs to yield a combined servo data signal.

    Abstract translation: 伺服系统包括：第一均衡器电路，可操作以对从第一读取头导出的数字伺服数据样本进行滤波，以产生第一均衡数据;第二均衡器电路，用于对从第二读取头导出的数字伺服数据样本进行滤波，得到第二均衡数据; 第一内插器，其可操作以内插所述第一均衡数据以产生在不同相位处的多个第一内插输出;第二内插器，其可操作以内插所述第二均衡数据以产生在不同相位处的多个第二内插输出，以及相位跟踪和信号 组合电路，其可操作以选择和组合来自第一内插输出和第二内插输出的最接近对齐的信号，以产生组合的伺服数据信号。

    Systems and Methods for Synchronization Hand Shaking in a Storage Device
    7.
    发明申请
    Systems and Methods for Synchronization Hand Shaking in a Storage Device 有权
    存储设备中同步握手的系统和方法

    公开(公告)号：US20150243311A1

    公开(公告)日：2015-08-27

    申请号：US14217783

    申请日：2014-03-18

    Applicant: LSI Corporation

    Inventor： Jeffrey P. Grundvig ,  Richard Rauschmayer ,  Scott M. Dziak

    IPC: G11B5/596 ,  G06F17/30

    CPC classification number: G11B5/4886 ,  G06F17/30424 ,  G11B5/09 ,  G11B5/3958 ,  G11B5/3967 ,  G11B5/3977 ,  G11B5/4866 ,  G11B5/59616 ,  G11B5/59627 ,  G11B5/59644 ,  G11B20/10259

    Abstract: Systems, methods, devices, circuits for data processing, and more particularly to systems and methods for reporting a synchronization indication and for applying a synchronization window. As an example, a system is discussed that includes: a head assembly including a first read head and a second read head; a down track distance calculation circuit operable to calculate a down track distance between the first read head and the second read head; and a synchronization mark detection circuit. The synchronization mark detection circuit is operable to: assert a synchronization mark window based at a location based at least in part on the down track distance; query a first data set derived from the first read head for a synchronization mark occurring within the synchronization mark window; and query a second data set derived from the second read head for the synchronization mark occurring within the synchronization mark window.

    Abstract translation: 用于数据处理的系统，方法，设备，电路，更具体地涉及用于报告同步指示和应用同步窗口的系统和方法。 作为示例，讨论了包括：包括第一读取头和第二读取头的头组件的系统; 下行轨道距离计算电路，用于计算第一读取头和第二读取头之间的下行轨迹距离; 和同步标记检测电路。 同步标记检测电路可操作用于：至少部分地基于下行轨道距离，在至少一个位置处断言同步标记窗口; 查询从所述第一读取头导出的用于同步标记窗口内出现的同步标记的第一数据集; 并且查询从同步标记窗口中出现的用于同步标记的从第二读取头导出的第二数据集。

    Method for format savings in coherently written fragmented sectors
    9.
    发明授权
    Method for format savings in coherently written fragmented sectors 有权
    一致写入分散行业节省格式的方法

    公开(公告)号：US09026891B2

    公开(公告)日：2015-05-05

    申请号：US13831246

    申请日：2013-03-14

    Applicant: LSI Corporation

    Inventor： Scott M. Dziak ,  Jeffrey P. Grundvig ,  Jason D. Byrne

    IPC: G11C29/00 ,  G11B27/30 ,  G11B20/12 ,  G06F11/10 ,  G11B20/10

    CPC classification number: G11B27/3027 ,  G06F11/1076 ,  G11B20/1217 ,  G11B2020/10916 ,  G11B2020/1232

    Abstract: A method and system for performing a shortened acquire cycle for at least one fragment of at least one data sector having coherently written fragments, the coherently written fragments being written during a single rotation of a storage medium. The method includes performing a full acquire cycle for a first fragment of a particular data sector of the at least one data sector. The method further includes reusing at least a portion of the acquisition information of the first fragment to perform a shortened acquire cycle for at least one subsequent coherently written fragment. The method also includes reusing at least a portion of the acquisition information of the first fragment to perform a shortened acquire cycle for at least one subsequent coherently written fragment. Additionally, the method includes performing the shortened acquire cycle for the at least one subsequent coherently written fragment.

    Abstract translation: 一种用于对具有相干写入的片段的至少一个数据扇区的至少一个片段执行缩短的获取周期的方法和系统，所述相干写入的片段在存储介质的单次旋转期间被写入。 该方法包括对至少一个数据扇区的特定数据扇区的第一片段执行完整采集周期。 该方法还包括重新使用第一片段的获取信息的至少一部分来对至少一个随后的相干写入片段执行缩短的获取周期。 该方法还包括重新利用第一片段的获取信息的至少一部分来对至少一个随后的相干写入片段执行缩短的获取周期。 另外，该方法包括对所述至少一个随后的相干写入片段执行缩短的获取周期。

    Two dimensional magnetic recording servo system adaptive combination
    10.
    发明授权
    Two dimensional magnetic recording servo system adaptive combination 有权
    二维磁记录伺服系统自适应组合

    公开(公告)号：US08837068B1

    公开(公告)日：2014-09-16

    申请号：US14259424

    申请日：2014-04-23

    Applicant: LSI Corporation

    Inventor： Yu Liao ,  Jeffrey P. Grundvig ,  Jin Lu ,  Richard Rauschmayer

    IPC: G11B5/09

    CPC classification number: G11B5/59688 ,  G11B5/59622

    Abstract: A servo system includes multiple interpolators operable to interpolate equalized data for multiple signal paths in a two dimensional magnetic recording system to yield interpolated signals at different phases, scaling circuits operable to scale the interpolated signals by adaptive scaling factors, a signal combining circuit operable to combine the scaled signals, a phase tracking circuit operable to select one of the phases of the combined signal, and an error gradient circuit operable to adapt the adaptive scaling factors.

    Abstract translation: 伺服系统包括多个内插器，其可操作以在二维磁记录系统中内插多个信号路径的均衡数据，以产生不同相位的内插信号，缩放电路可操作以通过自适应缩放因子缩放内插信号;信号组合电路，可操作以组合 缩放信号，可操作以选择组合信号的相位之一的相位跟踪电路和可操作以适应自适应缩放因子的误差梯度电路。

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