知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

86 records (took 0.021 seconds)

    Non-decision directed magnetoresistive asymetry estimation
    44.
    发明授权
    Non-decision directed magnetoresistive asymetry estimation 有权
    非决策定向磁阻非对称估计

    公开(公告)号：US09224421B2

    公开(公告)日：2015-12-29

    申请号：US14200228

    申请日：2014-03-07

    Applicant: LSI Corporation

    Inventor： Bruce A. Wilson ,  Nayak Ratnakar Aravind ,  Haitao Xia

    IPC: G11B5/02 ,  G11B20/10 ,  G11B5/012

    CPC classification number: G11B20/10324 ,  G11B5/012 ,  G11B5/455 ,  G11B20/10009 ,  G11B20/10027 ,  G11B20/10037 ,  G11B2005/0016

    Abstract: Systems and methods for magnetoresistive asymmetry estimation may include, but are not limited to, operations for: receiving a magnetic read head transducer output; computing a mean value of the magnetic read head transducer output; computing a median value of the magnetic read head transducer output; and applying a correction coefficient to a magnetic read head detector input according to at least the mean value of the magnetic read head transducer output and the median value of the magnetic read head transducer output.

    Abstract translation: 用于磁阻非对称估计的系统和方法可以包括但不限于用于：接收磁读头传感器输出的操作; 计算磁读头传感器输出的平均值; 计算磁读头转换器输出的中值; 以及至少根据磁读头变换器输出的平均值和磁读头变换器输出的中值，向磁读头检测器输入施加校正系数。

    Gated noise-predictive filter calibration
    45.
    发明授权
    Gated noise-predictive filter calibration 有权
    门控噪声预测滤波器校准

    公开(公告)号：US09202514B1

    公开(公告)日：2015-12-01

    申请号：US14334410

    申请日：2014-07-17

    Applicant: LSI Corporation

    Inventor： Jianzhong Huang ,  Shaohua Yang ,  Haitao Xia ,  Fuminori Sai ,  Weijun Tan

    IPC: G11B5/09 ,  G11B5/035 ,  G11B20/10

    CPC classification number: G11B20/10046

    Abstract: An apparatus for calibrating a noise predictive filter includes a noise-predictive filter operable to filter digital data samples to yield filtered data samples, a calibration circuit operable to calculate tap coefficients for the noise-predictive filter based at least in part on the digital data samples, and a gating circuit operable to select a portion of the digital data samples for use by the calibration circuit in calculating the tap coefficients.

    Abstract translation: 用于校准噪声预测滤波器的装置包括噪声预测滤波器，其可操作以对数字数据样本进行滤波以产生经滤波的数据采样;校准电路，可用于至少部分地基于数字数据样本来计算噪声预测滤波器的抽头系数 以及门控电路，其可操作以选择数字数据样本的一部分，以供校准电路在计算抽头系数时使用。

    Servo Channel With Equalizer Adaptation
    46.
    发明申请
    Servo Channel With Equalizer Adaptation 有权
    伺服通道均衡器适配

    公开(公告)号：US20150179213A1

    公开(公告)日：2015-06-25

    申请号：US14136051

    申请日：2013-12-20

    Applicant: LSI Corporation

    Inventor： Yu Liao ,  Xun Zhang ,  Haitao Xia

    IPC: G11B20/10

    CPC classification number: G11B20/10046 ,  G11B5/035 ,  G11B5/5526

    Abstract: A servo system includes an equalizer circuit operable to filter digital servo data samples according to filter tap coefficients to yield equalized data, a detector circuit operable to apply a data detection algorithm to the equalized data to yield hard decisions, a convolution circuit operable to yield ideal digital data based on the hard decisions and on target values, a subtraction circuit operable to subtract the ideal digital data from the equalized data to yield an adaptation error signal, an error gradient calculator operable calculate an error gradient signal based at least in part on the adaptation error signal, and a tap adaptation circuit operable to calculate values of the filter tap coefficients based on the error gradient signal.

    Abstract translation: 伺服系统包括均衡器电路，其可操作以根据滤波器抽头系数对数字伺服数据样本进行滤波以产生均衡的数据;检测器电路，可操作以将数据检测算法应用于均衡数据以产生硬判决;卷积电路， 基于硬判决和目标值的数字数据，减法电路，用于从均衡数据中减去理想数字数据以产生自适应误差信号，误差梯度计算器可操作地至少部分地基于 适应误差信号，以及可用于基于误差梯度信号计算滤波器抽头系数的值的抽头自适应电路。

    Multiple sync mark storage system
    47.
    发明授权
    Multiple sync mark storage system 有权
    多重同步标记存储系统

    公开(公告)号：US09001445B1

    公开(公告)日：2015-04-07

    申请号：US14106537

    申请日：2013-12-13

    Applicant: LSI Corporation

    Inventor： Rui Cao ,  Haitao Xia ,  Lu Lu

    IPC: G11B5/09 ,  G11B5/596 ,  G11B20/10

    CPC classification number: G11B5/59655 ,  G11B5/59616 ,  G11B20/10222

    Abstract: A data processing system includes a number of analog to digital converters operable to sample analog signals obtained from a magnetic storage medium to yield digital signals, multiple sync mark detectors operable to search for a number of different sync marks in the digital signals, and a sync mark detector output comparator operable to compare an output of each of the sync mark detectors to identify detection errors.

    Abstract translation: 数据处理系统包括多个模数转换器，可操作以对从磁存储介质获得的模拟信号进行采样以产生数字信号，多个同步标记检测器可操作以搜索数字信号中的多个不同同步标记，以及同步 标记检测器输出比较器，用于比较每个同步标记检测器的输出以识别检测误差。

    Systems and Methods for Detecting Media Flaws
    50.
    发明申请
    Systems and Methods for Detecting Media Flaws 有权
    检测介质缺陷的系统和方法

    公开(公告)号：US20140331108A1

    公开(公告)日：2014-11-06

    申请号：US13912109

    申请日：2013-06-06

    Applicant: LSI Corporation

    Inventor： Dahua Qin ,  Xun Zhang ,  Haitao Xia

    IPC: G06F11/07

    CPC classification number: G06F11/0727 ,  G11B5/09 ,  G11B20/10305 ,  G11B20/10361 ,  G11B20/10379 ,  G11B20/1816 ,  H03M13/03 ,  H03M13/4107

    Abstract: An apparatus for detecting media flaws includes a branch metric selection circuit operable to select a first branch metric and a second branch metric, a subtraction circuit operable to subtract the second branch metric from the first branch metric to yield a difference, and a comparator operable to compare the difference with a threshold value and to indicate a presence of a potential flaw in a storage medium when the difference is less than the threshold value.

    Abstract translation: 用于检测媒体缺陷的装置包括可操作以选择第一分支度量和第二分支度量的分支度量选择电路，减法电路，用于从第一分支度量中减去第二分支度量以产生差值;以及比较器， 将差值与阈值进行比较，并且当差值小于阈值时指示存储介质中存在潜在缺陷。

Patent Agency Ranking