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85 条记录 (耗时 0.017 秒)

    Systems and methods for low latency noise cancellation
    81.
    发明授权
    Systems and methods for low latency noise cancellation 有权
    用于低延迟噪声消除的系统和方法

    公开(公告)号：US08295001B2

    公开(公告)日：2012-10-23

    申请号：US12887369

    申请日：2010-09-21

    申请人： Jingfeng Liu ,  Haotian Zhang ,  Hongwei Song ,  George Mathew

    发明人： Jingfeng Liu ,  Haotian Zhang ,  Hongwei Song ,  George Mathew

    IPC分类号： G11B5/09 ,  G11B27/36

    CPC分类号： G11B20/10046 ,  G11B20/10509

    摘要： Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing circuit is discussed that includes a data detector circuit, a detector mimicking circuit, and an error calculation circuit. The data detector circuit is operable to perform a data detection process on a first signal derived from a data input to yield a detected output. The data mimicking circuit is operable to process a second signal derived from the data input to yield a mimicked output. The error calculation circuit is operable to calculate a difference between the second signal and a third signal derived from the mimicked output to yield a feedback signal. The feedback signal is operable to modify the data input during a subsequent period.

    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，讨论了包括数据检测器电路，检测器模拟电路和误差计算电路的数据处理电路。 数据检测器电路可操作以对从数据输入导出的第一信号执行数据检测处理，以产生检测到的输出。 数据模拟电路可操作以处理从数据输入得到的第二信号以产生模拟输出。 误差计算电路可用于计算第二信号和从模拟输出得到的第三信号之间的差以产生反馈信号。 反馈信号可操作以在随后的时段内修改数据输入。

    Systems and Methods for Low Latency Noise Cancellation
    82.
    发明申请
    Systems and Methods for Low Latency Noise Cancellation 有权
    低延迟噪声消除系统和方法

    公开(公告)号：US20120068752A1

    公开(公告)日：2012-03-22

    申请号：US12887369

    申请日：2010-09-21

    申请人： Jingfeng Liu ,  Haotian Zhang ,  Hongwei Song ,  George Mathew

    发明人： Jingfeng Liu ,  Haotian Zhang ,  Hongwei Song ,  George Mathew

    IPC分类号： H03H11/26 ,  H03K5/01

    CPC分类号： G11B20/10046 ,  G11B20/10509

    摘要： Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing circuit is discussed that includes a data detector circuit, a detector mimicking circuit, and an error calculation circuit. The data detector circuit is operable to perform a data detection process on a first signal derived from a data input to yield a detected output. The data mimicking circuit is operable to process a second signal derived from the data input to yield a mimicked output. The error calculation circuit is operable to calculate a difference between the second signal and a third signal derived from the mimicked output to yield a feedback signal. The feedback signal is operable to modify the data input during a subsequent period.

    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，讨论了包括数据检测器电路，检测器模拟电路和误差计算电路的数据处理电路。 数据检测器电路可操作以对从数据输入导出的第一信号执行数据检测处理，以产生检测到的输出。 数据模拟电路可操作以处理从数据输入得到的第二信号以产生模拟输出。 误差计算电路可用于计算第二信号和从模拟输出得到的第三信号之间的差以产生反馈信号。 反馈信号可操作以在随后的时段内修改数据输入。

    Disk drive adapting equalizer relative to bit error rate of sequence detector
    83.
    发明授权
    Disk drive adapting equalizer relative to bit error rate of sequence detector 有权
    磁盘驱动器适应均衡器相对于序列检测器的误码率

    公开(公告)号：US07944639B1

    公开(公告)日：2011-05-17

    申请号：US12178430

    申请日：2008-07-23

    申请人： Alvin J. Wang

    发明人： Alvin J. Wang

    IPC分类号： G11B5/53 ,  G11B5/09

    CPC分类号： G11B20/10009 ,  G11B20/10046 ,  G11B20/10064 ,  G11B20/10074 ,  G11B20/10175 ,  G11B20/10296 ,  G11B20/10379 ,  G11B20/10462 ,  G11B20/10509 ,  G11B2220/2516

    摘要： A disk drive is disclosed comprising a disk and a head actuated radially over the disk, wherein the head generates a read signal. A sampling device samples the read signal to generate a sequence of read signal samples, and an equalizer comprising a plurality of coefficients, equalizes the read signal samples to generate a sequence of equalized samples. A sequence detector detects an estimated data sequence from the equalized samples, wherein the sequence detector operates according to a target response comprising a plurality of target values. Control circuitry adapts the equalizer coefficients by computing error values in response to a difference between expected samples and the equalized samples, computing a gradient in response to a correlation of the read signal samples with the error values, and adjusting at least one of the equalizer coefficients in response to the gradient.

    摘要翻译： 公开了一种磁盘驱动器，包括盘和径向地在盘上致动的磁头，其中磁头产生读取信号。 采样设备对读取信号进行采样以产生读取信号采样序列，并且包括多个系数的均衡器对均衡的采样信号进行均衡以产生均衡采样序列。 序列检测器从均衡样本检测估计数据序列，其中序列检测器根据包括多个目标值的目标响应进行操作。 控制电路通过响应于预期样本和均衡样本之间的差计算误差值来适应均衡器系数，响应于读取信号样本与误差值的相关性计算梯度，以及调整均衡器系数中的至少一个 响应梯度。