Systems and methods for regenerating data from a defective medium
    31.
    发明授权
    Systems and methods for regenerating data from a defective medium 失效
    从缺陷介质再生数据的系统和方法

    公开(公告)号:US08095855B2

    公开(公告)日:2012-01-10

    申请号:US12111902

    申请日:2008-04-29

    IPC分类号: H03M13/00

    摘要: Various embodiments of the present invention provide systems and methods for data regeneration. For example, a system for data regeneration is disclosed that includes a data input derived from the medium. A data detector and a data recovery system receive the data input. The data detector provides a first soft output, and the data recovery system provides a second soft output. The first soft output and the second soft output are provided to a multiplexer. A media defect detector performs a media defect detection process, and provides a defect flag that indicates whether the data input is derived form a defective portion of the medium. The defect flag is provided to the multiplexer where it is used to select whether the first soft output or the second soft output is provides as an extrinsic output.

    摘要翻译: 本发明的各种实施例提供了用于数据再生的系统和方法。 例如,公开了一种用于数据再生的系统,其包括从介质导出的数据输入。 数据检测器和数据恢复系统接收数据输入。 数据检测器提供第一软输出,数据恢复系统提供第二软输出。 第一软输出和第二软输出被提供给多路复用器。 介质缺陷检测器执行介质缺陷检测处理,并提供指示数据输入是否从介质的缺陷部分导出的缺陷标志。 缺陷标志被提供给多路复用器,其中它用于选择第一软输出或第二软输出是作为外在输出提供。

    Frequency-based approach for detection and classification of hard-disc defect regions
    32.
    发明授权
    Frequency-based approach for detection and classification of hard-disc defect regions 有权
    基于频率的硬盘缺陷区域检测和分类方法

    公开(公告)号:US08031420B2

    公开(公告)日:2011-10-04

    申请号:US12707820

    申请日:2010-02-18

    IPC分类号: G11B27/36 G11B5/02

    摘要: In a hard-disc drive read channel, frequency-based measures are generated at two different data frequencies (e.g., 2T and DC) by applying a transform, such as a discrete Fourier transform (DFT), to signal values, such as ADC or equalizer output values, corresponding to, e.g., a 2T data pattern stored on the hard disc. The frequency-based measures are used to detect defect regions on the hard disc and/or to classify defect regions as being due to either thermal asperity (TA) or drop-out media defect (MD).

    摘要翻译: 在硬盘驱动读取通道中,通过将诸如离散付里叶变换(DFT)之类的变换应用于信号值(例如ADC或ADC),以两个不同的数据频率(例如,2T和DC)生成基于频率的测量 均衡器输出值,对应于例如存储在硬盘上的2T数据模式。 基于频率的测量用于检测硬盘上的缺陷区域和/或将缺陷区域分类为由于热粗糙度(TA)或脱落介质缺陷(MD)引起的。

    Systems and Methods for Determining Noise Components in a Signal Set
    33.
    发明申请
    Systems and Methods for Determining Noise Components in a Signal Set 有权
    用于确定信号组噪声分量的系统和方法

    公开(公告)号:US20110164669A1

    公开(公告)日:2011-07-07

    申请号:US12652201

    申请日:2010-01-05

    IPC分类号: H04B17/00

    CPC分类号: G11B20/10046 H04B17/345

    摘要: Various embodiments of the present invention provide systems and methods for estimating noise components in a received signal set. For example, one embodiment of the present invention provides a noise estimation circuit that includes a data detector circuit and a noise component calculation circuit. The data detector circuit receives a series of data samples and provides a detected output, and the noise component calculation circuit provides an electronics noise power output and a media noise power output each calculated based at least in part on the detected output and the series of data samples.

    摘要翻译: 本发明的各种实施例提供了用于估计接收信号组中的噪声分量的系统和方法。 例如,本发明的一个实施例提供了一种包括数据检测器电路和噪声分量计算电路的噪声估计电路。 数据检测器电路接收一系列数据样本并提供检测的输出,并且噪声分量计算电路提供电子噪声功率输出和媒体噪声功率输出,每个至少部分地基于所检测的输出和数据系列计算 样品。

    Systems and Methods for Storage Channel Testing
    34.
    发明申请
    Systems and Methods for Storage Channel Testing 有权
    存储通道测试的系统和方法

    公开(公告)号:US20100265608A1

    公开(公告)日:2010-10-21

    申请号:US12425757

    申请日:2009-04-17

    IPC分类号: G11B27/36

    CPC分类号: G11B20/182 G11B2220/2516

    摘要: Various embodiments of the present invention provide systems and methods for validating elements of storage devices. A an example, various embodiments of the present invention provide semiconductor devices that include a write path circuit, a read path circuit and a validation circuit. The write path circuit is operable to receive a data input and to convert the data input into write data suitable for storage to a storage medium. The read path circuit is operable to receive read data and to convert the read data into a data output. The validation circuit is operable to: receive the write data, augment the write data with a first noise sequence to yield a first augmented data series; and augment a derivative of the first augmented data series with a second noise sequence to yield the read data.

    摘要翻译: 本发明的各种实施例提供用于验证存储设备的元件的系统和方法。 作为示例,本发明的各种实施例提供包括写入路径电路,读取路径电路和验证电路的半导体器件。 写入路径电路可操作用于接收数据输入并将数据输入转换成适合于存储的写数据到存储介质。 读路径电路可操作以接收读数据并将读数据转换为数据输出。 验证电路可操作用于:接收写数据,用第一噪声序列增加写数据以产生第一增强数据序列; 并且用第二噪声序列来增加第一增强数据序列的导数以产生读取的数据。

    Systems and Methods for Using Intrinsic Data for Regenerating Data from a Defective Medium
    35.
    发明申请
    Systems and Methods for Using Intrinsic Data for Regenerating Data from a Defective Medium 有权
    使用内在数据从有缺陷的介质再生数据的系统和方法

    公开(公告)号:US20090235146A1

    公开(公告)日:2009-09-17

    申请号:US12111867

    申请日:2008-04-29

    IPC分类号: H03M13/45 G06F11/08

    摘要: Various embodiments of the present invention provide systems and methods for data regeneration. For example, a system for data regeneration is disclosed that includes a data input derived from the medium. A data detector and a data recovery system receive the data input. The data detector provides a first soft output, and the data recovery system provides a second soft output. The first soft output and the second soft output are provided to a multiplexer. A media defect detector performs a media defect detection process, and provides a defect flag that indicates whether the data input is derived form a defective portion of the medium. The defect flag is provided to the multiplexer where it is used to select whether the first soft output or the second soft output is provides as an extrinsic output.

    摘要翻译: 本发明的各种实施例提供了用于数据再生的系统和方法。 例如,公开了一种用于数据再生的系统,其包括从介质导出的数据输入。 数据检测器和数据恢复系统接收数据输入。 数据检测器提供第一软输出,数据恢复系统提供第二软输出。 第一软输出和第二软输出被提供给多路复用器。 介质缺陷检测器执行介质缺陷检测处理,并且提供指示数据输入是否从介质的缺陷部分导出的缺陷标志。 缺陷标志被提供给多路复用器,其中它用于选择第一软输出或第二软输出是作为外在输出提供。

    Systems and methods for SNR measurement using equalized data
    36.
    发明授权
    Systems and methods for SNR measurement using equalized data 有权
    使用均衡数据进行SNR测量的系统和方法

    公开(公告)号:US08929017B2

    公开(公告)日:2015-01-06

    申请号:US13316953

    申请日:2011-12-12

    IPC分类号: G11B5/035 G11B5/596 G11B20/10

    摘要: Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing system is discussed that includes: an equalizer circuit, a signal to noise ratio calculation circuit, and a parameter adjustment circuit. The equalizer circuit is operable to equalize a data input to yield an equalized output. The signal to noise ratio calculation circuit is operable to calculate a signal to noise ratio of the equalized output based at least in part on a noise power derived from the equalized output. The parameter adjustment circuit is operable to adjust a parameter based at least in part on the signal to noise ratio.

    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,讨论了包括均衡器电路,信噪比计算电路和参数调整电路的数据处理系统。 均衡器电路可操作以均衡数据输入以产生均衡的输出。 信噪比计算电路可用于至少部分地基于从均衡输出得到的噪声功率来计算均衡输出的信噪比。 参数调整电路可操作以至少部分地基于信噪比来调整参数。

    Systems and Methods for SNR Measurement Using Equalized Data
    38.
    发明申请
    Systems and Methods for SNR Measurement Using Equalized Data 有权
    使用均衡数据进行SNR测量的系统和方法

    公开(公告)号:US20130148233A1

    公开(公告)日:2013-06-13

    申请号:US13316953

    申请日:2011-12-12

    IPC分类号: H03H7/30 G11B5/035

    摘要: Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing system is discussed that includes: an equalizer circuit, a signal to noise ratio calculation circuit, and a parameter adjustment circuit. The equalizer circuit is operable to equalize a data input to yield an equalized output. The signal to noise ratio calculation circuit is operable to calculate a signal to noise ratio of the equalized output based at least in part on a noise power derived from the equalized output. The parameter adjustment circuit is operable to adjust a parameter based at least in part on the signal to noise ratio.

    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,讨论了包括均衡器电路,信噪比计算电路和参数调整电路的数据处理系统。 均衡器电路可操作以均衡数据输入以产生均衡的输出。 信噪比计算电路可用于至少部分地基于从均衡输出得到的噪声功率来计算均衡输出的信噪比。 参数调整电路可操作以至少部分地基于信噪比来调整参数。