知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

86 records (took 0.022 seconds)

    Data sequence detection in band-limited channels based on equalization interpolation
    34.
    发明授权
    Data sequence detection in band-limited channels based on equalization interpolation 有权
    基于均衡插值的带限通道中的数据序列检测

    公开(公告)号：US08670198B1

    公开(公告)日：2014-03-11

    申请号：US13766182

    申请日：2013-02-13

    Applicant: LSI Corporation

    Inventor： Yu Liao ,  Hongwei Song ,  Haitao Xia

    IPC: G11B5/00

    CPC classification number: G11B20/10046

    Abstract: A method for detecting a data sequence includes generating a first sample stream, which is a time-sequenced digital signal associated with samples of an analog signal. The first sample stream is interpolated to generate a second sample stream with a different phase. The first sample stream is equalized to generate a first equalized sample stream. The second sample stream is equalized to generate a second equalized sample stream. The first and second equalized sample streams are processed to estimate the second equalized sample stream. The first equalized sample stream is filtered to generate a first set of noise sample streams. The estimated second equalized sample stream is filtered to generate a second set of noise sample streams. The first set and the second set of noise sample streams are diversity combined to generate a set of combined noise sample streams. A data sequence is detected using the combined noise sample streams.

    Abstract translation: 用于检测数据序列的方法包括产生第一采样流，其是与模拟信号的样本相关联的时间序列数字信号。 内插第一采样流以产生具有不同相位的第二采样流。 将第一样品流均衡以产生第一均衡样品流。 第二样本流被均衡以产生第二均衡样本流。 处理第一和第二均衡样本流以估计第二均衡样本流。 对第一均衡样本流进行滤波以产生第一组噪声采样流。 对估计的第二均衡采样流进行滤波以产生第二组噪声采样流。 第一组和第二组噪声采样流被分集组合以产生一组组合的噪声采样流。 使用组合的噪声样本流来检测数据序列。

    Systems and methods for multi-head balancing in a storage device
    35.
    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。

    Servo channel with equalizer adaptation
    36.
    发明授权
    Servo channel with equalizer adaptation 有权
    具有均衡器适配的伺服通道

    公开(公告)号：US09129647B2

    公开(公告)日：2015-09-08

    申请号：US14136051

    申请日：2013-12-20

    Applicant: LSI Corporation

    Inventor： Yu Liao ,  Xun Zhang ,  Haitao Xia

    IPC: G11B5/02 ,  G11B20/10 ,  G11B5/55 ,  G11B5/035

    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。

    Systems and Methods for ATI Characterization
    38.
    发明申请
    Systems and Methods for ATI Characterization 有权
    ATI表征的系统和方法

    公开(公告)号：US20150170706A1

    公开(公告)日：2015-06-18

    申请号：US14148407

    申请日：2014-01-06

    Applicant: LSI Corporation

    Inventor： Lu Lu ,  Haitao Xia ,  Lu Pan ,  Xiufeng Song

    IPC: G11B20/10

    CPC classification number: G11B20/10046 ,  G11B20/10212

    Abstract: Systems, methods, devices, circuits for data processing, and more particularly to data processing including adjacent track interference detection and/or characterization.

    Abstract translation: 用于数据处理的系统，方法，设备，电路，更具体地涉及包括相邻轨道干扰检测和/或表征的数据处理。

    Hardware support of servo format with two preamble fields
    39.
    发明授权
    Hardware support of servo format with two preamble fields 有权
    具有两个前同步码字段的伺服格式的硬件支持

    公开(公告)号：US08970981B2

    公开(公告)日：2015-03-03

    申请号：US13851734

    申请日：2013-03-27

    Applicant: LSI Corporation

    Inventor： Xun Zhang ,  Haitao Xia ,  Dahua Qin

    IPC: G11B5/584 ,  G11B5/596 ,  G11B27/30

    CPC classification number: G11B5/59688 ,  G11B5/59627 ,  G11B20/1217 ,  G11B27/3027 ,  G11B2020/1281 ,  G11B2020/1484

    Abstract: A hard disk drive uses a second, reference burst field in a preamble to estimate burst phase and burst magnitude. Such estimations are used for position error signal integration and repeatable runout correction. Gain error is also derived from such estimations. Information contained in a preamble field is used in conjunction with the reference burst phase estimation to synchronize servo address marks.

    Abstract translation: 硬盘驱动器使用前导码中的第二个参考突发字段来估计突发相位和突发幅度。 这种估计用于位置误差信号积分和可重复的跳动校正。 增益误差也来源于这样的估计。 包含在前导字段中的信息与参考突发相位估计结合使用以同步伺服地址标记。

    Automatic On-Drive Sync-Mark Search and Threshold Adjustment
    40.
    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。

Patent Agency Ranking