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    Dynamically adapting a read channel equalizer
    1.
    发明授权
    Dynamically adapting a read channel equalizer 失效
    动态调整读通道均衡器

    公开(公告)号：US07589927B2

    公开(公告)日：2009-09-15

    申请号：US11215409

    申请日：2005-08-30

    申请人： Robert Allen Hutchins ,  Sedat Oelcer ,  Jens Jelitto ,  Evangelos S. Eleftheriou

    发明人： Robert Allen Hutchins ,  Sedat Oelcer ,  Jens Jelitto ,  Evangelos S. Eleftheriou

    IPC分类号： G11B5/35

    CPC分类号： G11B5/035 ,  G11B20/10046 ,  G11B20/10212 ,  G11B20/1201

    摘要： Provided is a read channel incorporated in a storage device to process signals read from a storage medium. The read channel includes an equalizer equalizing input read signals to produce equalizer output signals. A detector senses an adjusted equalizer output signal to determine an output value comprising data represented by the input read signals. An equalizer adaptor receives the output value from the detector to determine a first error signal used to adjust the equalizer operations. A component adjusts the equalizer output signals being transmitted to the detector, wherein the component is adjusted by a second error signal calculated from the output value from the detector, wherein the first and second error signals are different.

    摘要翻译： 提供了一种结合在存储装置中以读取从存储介质读取的信号的读通道。 读通道包括均衡器均衡输入读信号以产生均衡器输出信号。 检测器感测调整的均衡器输出信号以确定包括由输入读取信号表示的数据的输出值。 均衡器适配器从检测器接收输出值以确定用于调整均衡器操作的第一误差信号。 一个分量调整正被发送到检测器的均衡器输出信号，其中通过从检测器的输出值计算的第二误差信号调整分量，其中第一和第二误差信号是不同的。

    Using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal
    3.
    发明授权
    Using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal 失效
    使用测量误差来确定提供给均衡器的系数以用于均衡输入信号

    公开(公告)号：US07821733B2

    公开(公告)日：2010-10-26

    申请号：US12189096

    申请日：2008-08-08

    申请人： Evangelos S. Eleftheriou ,  Robert Allen Hutchins ,  Jens Jelitto ,  Sedat Oelcer

    发明人： Evangelos S. Eleftheriou ,  Robert Allen Hutchins ,  Jens Jelitto ,  Sedat Oelcer

    IPC分类号： G11B5/35

    CPC分类号： G11B5/09 ,  G11B5/00817 ,  G11B20/10009 ,  G11B20/10046

    摘要： Provided are a read channel, storage drive and method using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal. A read channel is incorporated in a storage device to process signals read from a storage medium. An equalizer uses coefficients to equalize input read signals to produce equalizer output signals. A detector processes adjusted equalizer output signals to determine output values comprising data represented by the input read signals. An equalizer adaptor is enabled to provide a reference measured error and coefficients used to produce the adjusted equalizer signals that are associated with the reference measured error. The equalizer adaptor computes new equalizer coefficients to use to equalize input read signals that result in a new measured error from the detector and computes a new measured error for the new equalizer coefficients. The equalizer adaptor determines whether the new measured error is degraded with respect to the reference measured error and saves the new equalizer coefficients and the new measured error in response to determining that the new measured error is not degraded with respect to the reference measured error. The equalizer adaptor provides the equalizer coefficients associated with the reference measured error to the equalizer to use to equalize input read signals in response to determining that the new measured error is degraded with respect to the reference measured error.

    摘要翻译： 提供了读通道，存储驱动器和使用测量误差的方法来确定提供给均衡器的系数以用于均衡输入信号。 读取通道并入存储装置中以处理从存储介质读取的信号。 均衡器使用系数来均衡输入读取信号以产生均衡器输出信号。 检测器处理经调整的均衡器输出信号以确定包括由输入读信号表示的数据的输出值。 启用均衡器适配器以提供参考测量误差和用于产生与参考测量误差相关联的经调整的均衡器信号的系数。 均衡器适配器计算新的均衡器系数以用于均衡来自检测器的导致新的测量误差的输入读取信号，并且计算新的均衡器系数的新的测量误差。 均衡器适配器确定新的测量误差是否相对于参考测量误差降级，并且响应于确定新的测量误差相对于参考测量误差而不降级而保存新的均衡器系数和新的测量误差。 均衡器适配器将与参考测量误差相关联的均衡器系数提供给均衡器以用于响应于确定新的测量误差相对于参考测量误差而降级来均衡输入读取信号。

    USING A MEASURED ERROR TO DETERMINE COEFFICIENTS TO PROVIDE TO AN EQUALIZER TO USE TO EQUALIZE AN INPUT SIGNAL
    4.
    发明申请
    USING A MEASURED ERROR TO DETERMINE COEFFICIENTS TO PROVIDE TO AN EQUALIZER TO USE TO EQUALIZE AN INPUT SIGNAL 失效
    使用测量错误确定系数以提供均衡器以均衡输入信号

    公开(公告)号：US20080297937A1

    公开(公告)日：2008-12-04

    申请号：US12189096

    申请日：2008-08-08

    申请人： Evangelos S. Eleftheriou ,  Robert Allen Hutchins ,  Jens Jelitto ,  Sedat Oelcer

    发明人： Evangelos S. Eleftheriou ,  Robert Allen Hutchins ,  Jens Jelitto ,  Sedat Oelcer

    IPC分类号： G11B5/35

    CPC分类号： G11B5/09 ,  G11B5/00817 ,  G11B20/10009 ,  G11B20/10046

    摘要： Provided are a read channel, storage drive and method using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal. A read channel is incorporated in a storage device to process signals read from a storage medium. An equalizer uses coefficients to equalize input read signals to produce equalizer output signals. A detector processes adjusted equalizer output signals to determine output values comprising data represented by the input read signals. An equalizer adaptor is enabled to provide a reference measured error and coefficients used to produce the adjusted equalizer signals that are associated with the reference measured error. The equalizer adaptor computes new equalizer coefficients to use to equalize input read signals that result in a new measured error from the detector and computes a new measured error for the new equalizer coefficients. The equalizer adaptor determines whether the new measured error is degraded with respect to the reference measured error and saves the new equalizer coefficients and the new measured error in response to determining that the new measured error is not degraded with respect to the reference measured error. The equalizer adaptor provides the equalizer coefficients associated with the reference measured error to the equalizer to use to equalize input read signals in response to determining that the new measured error is degraded with respect to the reference measured error.

    摘要翻译： 提供了读通道，存储驱动器和使用测量误差的方法来确定提供给均衡器的系数以用于均衡输入信号。 读取通道并入存储装置中以处理从存储介质读取的信号。 均衡器使用系数来均衡输入读取信号以产生均衡器输出信号。 检测器处理经调整的均衡器输出信号以确定包括由输入读信号表示的数据的输出值。 启用均衡器适配器以提供参考测量误差和用于产生与参考测量误差相关联的经调整的均衡器信号的系数。 均衡器适配器计算新的均衡器系数以用于均衡来自检测器的导致新的测量误差的输入读取信号，并且计算新的均衡器系数的新的测量误差。 均衡器适配器确定新的测量误差是否相对于参考测量误差降级，并且响应于确定新的测量误差相对于参考测量误差而不降级而保存新的均衡器系数和新的测量误差。 均衡器适配器将与参考测量误差相关联的均衡器系数提供给均衡器以用于响应于确定新的测量误差相对于参考测量误差而降级来均衡输入读取信号。

    Using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal
    5.
    发明授权
    Using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal 失效
    使用测量误差来确定提供给均衡器的系数以用于均衡输入信号

    公开(公告)号：US07436615B2

    公开(公告)日：2008-10-14

    申请号：US11298386

    申请日：2005-12-08

    申请人： Evangelos S. Eleftheriou ,  Robert Allen Hutchins ,  Jens Jelitto ,  Sedat Oelcer

    发明人： Evangelos S. Eleftheriou ,  Robert Allen Hutchins ,  Jens Jelitto ,  Sedat Oelcer

    IPC分类号： G11B5/35

    CPC分类号： G11B5/09 ,  G11B5/00817 ,  G11B20/10009 ,  G11B20/10046

    摘要： Provided are a read channel, storage drive and method using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal. A read channel is incorporated in a storage device to process signals read from a storage medium. An equalizer uses coefficients to equalize input read signals to produce equalizer output signals. A detector processes adjusted equalizer output signals to determine output values comprising data represented by the input read signals. An equalizer adaptor is enabled to provide a reference measured error and coefficients used to produce the adjusted equalizer signals that are associated with the reference measured error. The equalizer adaptor computes new equalizer coefficients to use to equalize input read signals that result in a new measured error from the detector and computes a new measured error for the new equalizer coefficients. The equalizer adaptor determines whether the new measured error is degraded with respect to the reference measured error and saves the new equalizer coefficients and the new measured error in response to determining that the new measured error is not degraded with respect to the reference measured error. The equalizer adaptor provides the equalizer coefficients associated with the reference measured error to the equalizer to use to equalize input read signals in response to determining that the new measured error is degraded with respect to the reference measured error.

    摘要翻译： 提供了读通道，存储驱动器和使用测量误差的方法来确定提供给均衡器的系数以用于均衡输入信号。 读取通道并入存储装置中以处理从存储介质读取的信号。 均衡器使用系数来均衡输入读取信号以产生均衡器输出信号。 检测器处理经调整的均衡器输出信号以确定包括由输入读信号表示的数据的输出值。 启用均衡器适配器以提供参考测量误差和用于产生与参考测量误差相关联的经调整的均衡器信号的系数。 均衡器适配器计算新的均衡器系数以用于均衡来自检测器的导致新的测量误差的输入读取信号，并且计算新的均衡器系数的新的测量误差。 均衡器适配器确定新的测量误差是否相对于参考测量误差降级，并且响应于确定新的测量误差相对于参考测量误差而不降级而保存新的均衡器系数和新的测量误差。 均衡器适配器将与参考测量误差相关联的均衡器系数提供给均衡器以用于响应于确定新的测量误差相对于参考测量误差而降级来均衡输入读取信号。

    Apparatus, system, and method for adaptive asynchronous equalization using leakage
    6.
    发明授权
    Apparatus, system, and method for adaptive asynchronous equalization using leakage 有权
    使用泄漏进行自适应异步均衡的装置，系统和方法

    公开(公告)号：US07596176B2

    公开(公告)日：2009-09-29

    申请号：US11263189

    申请日：2005-10-31

    申请人： Evangelos S. Eleftheriou ,  Robert Allen Hutchins ,  Jens Jelitto ,  Sedat Oelcer

    发明人： Evangelos S. Eleftheriou ,  Robert Allen Hutchins ,  Jens Jelitto ,  Sedat Oelcer

    IPC分类号： H03H7/30

    CPC分类号： G11B20/10009 ,  G11B20/10046 ,  G11B20/10175 ,  G11B20/10481 ,  H04L25/03019 ,  H04L2025/03484 ,  H04L2025/03681

    摘要： An apparatus, system, and method are disclosed for adaptive asynchronous equalization using leakage. An equalizer sums products of a plurality of tap signals from a delay line sampling a read signal and a plurality of corresponding tap coefficients to form an equalized signal in an asynchronous time domain having a first sampling rate. A leaky function module calculates a leaky function for each tap coefficient in the asynchronous time domain. An adaptation module adapts each of the tap coefficients as the leaky function for each tap coefficient summed with a signal-dependent updating function for each tap coefficient.

    摘要翻译： 公开了一种使用泄漏进行自适应异步均衡的装置，系统和方法。 均衡器对来自对读取信号进行采样的延迟线和多个对应抽头系数的多个抽头信号的乘积相加，以在具有第一采样率的异步时域中形成均衡信号。 泄漏功能模块计算异步时域中每个抽头系数的泄漏函数。 适配模块将每个抽头系数适配为每个抽头系数的泄漏函数，用于针对每个抽头系数的与信号相关的更新函数相加。

    System, method, and computer program product for characterizing media associated with data storage channels
    9.
    发明申请
    System, method, and computer program product for characterizing media associated with data storage channels 有权
    用于表征与数据存储通道相关联的介质的系统，方法和计算机程序产品

    公开(公告)号：US20100172047A1

    公开(公告)日：2010-07-08

    申请号：US12350108

    申请日：2009-01-07

    申请人： Evangelos S. Eleftheriou ,  Robert Allen Hutchins ,  Hisato Matsuo ,  Sedat Oelcer

    发明人： Evangelos S. Eleftheriou ,  Robert Allen Hutchins ,  Hisato Matsuo ,  Sedat Oelcer

    IPC分类号： G11B20/10 ,  G11B5/78

    CPC分类号： G11B20/10009 ,  G11B20/10055 ,  G11B20/10175 ,  G11B20/10222 ,  G11B2220/90

    摘要： A system in one embodiment includes multiple analog inputs for receiving readback signals, an analog to digital converter coupled to each of the analog inputs for converting the readback signals to digital signals, a buffer coupled to outputs of the analog to digital converters for at least temporarily storing the digital signals, and a digital processing section also coupled to outputs of the analog to digital converters for processing the digital signals for reconstructing data therefrom. A method in one embodiment includes receiving multiple channels of analog readback signals from a magnetic head, converting the analog signals in each channel to digital signals, buffering the digital signals, and outputting the buffered digital signals. A method in another embodiment includes receiving a readback waveform from a magnetic storage device, reducing a frequency offset of the readback waveform, and generating a synchronized, oversampled waveform from the readback waveform.

    摘要翻译： 一个实施例中的系统包括用于接收回读信号的多个模拟输入，耦合到每个模拟输入的模数转换器，用于将回读信号转换成数字信号;耦合到模数转换器的输出的缓冲器，用于至少暂时地 存储数字信号，以及数字处理部分，其耦合到模数转换器的输出端，用于处理数字信号以从其重构数据。 一个实施例中的方法包括从磁头接收多个通道的模拟回读信号，将每个通道中的模拟信号转换成数字信号，缓冲数字信号，并输出缓冲的数字信号。 另一实施例中的方法包括从磁存储设备接收回读波形，减少回读波形的频率偏移，以及从回读波形生成同步的过采样波形。