知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

87 条记录 (耗时 0.025 秒)

    Modulated disk lock clock and methods for using such
    4.
    发明授权
    Modulated disk lock clock and methods for using such 有权
    调制磁盘锁时钟及使用方法

    公开(公告)号：US07929237B2

    公开(公告)日：2011-04-19

    申请号：US12147543

    申请日：2008-06-27

    申请人： Jeffrey P. Grundvig ,  Richard Rauschmayer

    发明人： Jeffrey P. Grundvig ,  Richard Rauschmayer

    IPC分类号： G11B5/09 ,  G11B27/36

    CPC分类号： G11B20/14 ,  G11B20/10222 ,  G11B2020/1476 ,  G11B2020/1484 ,  G11B2220/2516

    摘要： Various embodiments of the present invention provide systems and methods for controlling access to a magnetic storage medium. As one example, a method for controlling access to a storage medium is disclosed that includes calculating a point to point error amount, and generating a incremental error value based at least in part on the point to point error amount. The incremental error value is applied incrementally across a defined number of clock cycles.

    摘要翻译： 本发明的各种实施例提供了用于控制对磁存储介质的访问的系统和方法。 作为一个示例，公开了一种用于控制对存储介质的访问的方法，其包括计算点对点误差量，并且至少部分地基于点对点误差量生成增量误差值。 递增错误值在规定数量的时钟周期内逐步应用。

    Adaptive track shape control during self servo-write
    5.
    发明授权
    Adaptive track shape control during self servo-write 有权
    自伺服写入时的自适应轨迹形状控制

    公开(公告)号：US07881004B2

    公开(公告)日：2011-02-01

    申请号：US12212841

    申请日：2008-09-18

    申请人： Kishan K. Kumbla ,  Steven Smith

    发明人： Kishan K. Kumbla ,  Steven Smith

    IPC分类号： G11B21/02

    CPC分类号： G11B20/14 ,  G11B5/59644 ,  G11B5/59666 ,  G11B20/18 ,  G11B2020/1281 ,  G11B2020/1476 ,  G11B2020/1484 ,  G11B2220/2516

    摘要： In a method for implementing track shape control during a self servo-write process, an error in a targeted path for writing servo data onto a first track of a disk is detected. The error is correlated with a second error for a targeted path in a previously written track of the disk. A correction is generated for a feed-forward signal used to position a writing element which is used to write servo data for a subsequent track of the disk.

    摘要翻译： 在用于在自伺服写入过程中实现轨道形状控制的方法中，检测用于将伺服数据写入到盘的第一轨道上的目标路径中的错误。 该错误与先前写入的磁盘轨迹中的目标路径的第二个错误相关。 对于用于定位用于写入用于盘的后续轨道的伺服数据的写入元件的前馈信号产生校正。

    Servo field preamble detector and methods for use therewith
    7.
    发明授权
    Servo field preamble detector and methods for use therewith 失效
    伺服场前同步码检测器及其使用方法

    公开(公告)号：US07672071B2

    公开(公告)日：2010-03-02

    申请号：US11513686

    申请日：2006-08-30

    申请人： King Wai Thomas Lau

    发明人： King Wai Thomas Lau

    IPC分类号： G11B5/09 ,  G11B20/10 ,  G11B5/02 ,  G11B21/02

    CPC分类号： G11B20/14 ,  G11B5/59688 ,  G11B20/10 ,  G11B20/10037 ,  G11B20/10074 ,  G11B20/10175 ,  G11B20/10314 ,  G11B20/1217 ,  G11B2020/10916 ,  G11B2020/1281 ,  G11B2020/1284 ,  G11B2020/1484 ,  G11B2220/2516

    摘要： A servo field preamble detector includes an upsampling module that generates a plurality of upsampled read samples by upsampling a read signal by an upsampling factor. An interpolation filter module generates a plurality of interpolated read samples from the plurality of upsampled read samples. A peak detection module identifies a plurality of peak samples from the plurality of interpolated read samples. A magnitude estimation module generates a magnitude estimation signal from the plurality of peak samples. A comparison module compares the magnitude estimation signal to a magnitude threshold and asserts a servo preamble detection signal when the magnitude estimation signal compares favorably to the magnitude threshold.

    摘要翻译： 伺服场前同步码检测器包括上采样模块，该上采样模块通过上采样因子对读信号进行上采样来产生多个上采样读取采样。 内插滤波器模块从多个上采样的读取样本生成多个内插读取样本。 峰值检测模块识别来自多个内插读取采样的多个峰值采样。 幅度估计模块从多个峰值样本生成幅度估计信号。 比较模块将幅度估计信号与幅度阈值进行比较，并且当幅度估计信号与幅度阈值相比较时，确定伺服前导码检测信号。

    Modulated Disk Lock Clock and Methods for Using Such
    8.
    发明申请
    Modulated Disk Lock Clock and Methods for Using Such 有权
    调制磁盘锁定时钟及使用方法

    公开(公告)号：US20090323214A1

    公开(公告)日：2009-12-31

    申请号：US12147543

    申请日：2008-06-27

    申请人： Jeffrey P. Grundvig ,  Richard Rauschmayer

    发明人： Jeffrey P. Grundvig ,  Richard Rauschmayer

    IPC分类号： G11B5/09 ,  G11B15/18

    CPC分类号： G11B20/14 ,  G11B20/10222 ,  G11B2020/1476 ,  G11B2020/1484 ,  G11B2220/2516

    摘要： Various embodiments of the present invention provide systems and methods for controlling access to a magnetic storage medium. As one example, a method for controlling access to a storage medium is disclosed that includes calculating a point to point error amount, and generating a incremental error value based at least in part on the point to point error amount. The incremental error value is applied incrementally across a defined number of clock cycles.

    摘要翻译： 本发明的各种实施例提供了用于控制对磁存储介质的访问的系统和方法。 作为一个示例，公开了一种用于控制对存储介质的访问的方法，其包括计算点对点误差量，并且至少部分地基于点对点误差量生成增量误差值。 递增错误值在规定数量的时钟周期内逐步应用。

    Waveform equalizer for a reproduction signal obtained by reproducing marks and non-marks recorded on a recording medium
    9.
    发明申请
    Waveform equalizer for a reproduction signal obtained by reproducing marks and non-marks recorded on a recording medium 有权
    用于通过再现记录在记录介质上的标记和非标记而获得的再现信号的波形均衡器

    公开(公告)号：US20040151097A1

    公开(公告)日：2004-08-05

    申请号：US10626607

    申请日：2003-07-25

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： Harumitsu Miyashita ,  Shinichi Konishi ,  Atsushi Nakamura ,  Takeshi Nakajima ,  Junichi Minamino

    IPC分类号： G11B007/00

    CPC分类号： G11B20/10009 ,  G11B7/005 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10166 ,  G11B20/10296 ,  G11B2020/1484

    摘要： A waveform equalizer for equalizing a waveform of a reproduction signal. A delay element delays a propagation of the reproduction signal. A plurality of multipliers multiply predetermined coefficients by the reproduction signal and the delayed propagation reproduction signal. A detector detects an asymmetry of the reproduction signal arising from physical profiles of each of the marks and the non-marks, and outputs a detection signal representing an amount of asymmetry. A discriminator outputs a discrimination signal in response to a discrimination of the marks and the non-marks. A calculator calculates a first coefficient multiplied by the reproduction signal of the marks based on the outputted detection signal, and calculates a second coefficient multiplied by the reproduction signal of the non-marks. A selector selects either the first or second coefficient, based upon the outputted discriminating signal.

    摘要翻译： 用于均衡再现信号的波形的波形均衡器。 延迟元件延迟再现信号的传播。 多个乘法器通过再现信号和延迟的传播再现信号乘以预定系数。 检测器检测由每个标记和非标记的物理轮廓产生的再现信号的不对称性，并且输出表示不对称量的检测信号。 鉴别器响应于对标记和非标记的区分而输出鉴别信号。 计算器基于输出的检测信号计算乘以标记的再现信号的第一系数，并计算与非标记的再现信号相乘的第二系数。 选择器根据输出的鉴别信号选择第一或第二系数。

    Waveform equalizer for a reproduction signal obtained by reproducing marks and non-marks recorded on a recording medium
    10.
    发明授权
    Waveform equalizer for a reproduction signal obtained by reproducing marks and non-marks recorded on a recording medium 有权
    用于通过再现记录在记录介质上的标记和非标记而获得的再现信号的波形均衡器

    公开(公告)号：US06678230B2

    公开(公告)日：2004-01-13

    申请号：US09984351

    申请日：2001-10-29

    申请人： Harumitsu Miyashita ,  Shinichi Konishi ,  Atsushi Nakamura ,  Takeshi Nakajima ,  Junichi Minamino

    发明人： Harumitsu Miyashita ,  Shinichi Konishi ,  Atsushi Nakamura ,  Takeshi Nakajima ,  Junichi Minamino

    IPC分类号： G11B7005

    CPC分类号： G11B20/10009 ,  G11B7/005 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10166 ,  G11B20/10296 ,  G11B2020/1484

    摘要： Even with an asymmetric reproduction waveform, or under the noisy environment, an accurate equalizing error is found and temporary judgment value for adaptively controlling the coefficient of FIR filter is accurately outputted. A waveform equalizer for equalizing a waveform of a reproduction signal obtained by reproducing marks and non-marks recorded on a recording medium is provided. The equalizer includes: a detector which detects asymmetry of the reproduction signal arising from physical profiles of the marks and non-marks and outputs a detection signal representing asymmetric amount; a discriminator which discriminates the marks and non-marks based on the reproduction signal to output a discriminated signal; and a selector which calculates a first and second coefficient multiplied by the reproduction signal of the marks and non-marks based on the detection signal, which are different. The selector selects one of the first and second coefficients based on the discriminating signal.

    摘要翻译： 即使具有不对称再现波形，或者在嘈杂的环境下，发现精确的均衡误差，并且准确地输出用于自适应地控制FIR滤波器的系数的临时判断值。 提供了用于均衡通过再现记录在记录介质上的标记和非标记而获得的再现信号的波形的波形均衡器。 均衡器包括：检测器，其检测由标记和非标记的物理特征引起的再现信号的不对称性，并输出表示不对称量的检测信号; 鉴别器，其基于再现信号鉴别标记和非标记，以输出鉴别信号; 以及选择器，其基于检测信号计算与所述标记和非标记的再现信号相乘的第一和第二系数，所述检测信号不同。 选择器基于鉴别信号选择第一和第二系数之一。