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1. 发明申请

US20110164669A1 Systems and Methods for Determining Noise Components in a Signal Set 有权
标题翻译：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
申请人： George Mathew , Shaohua Yang , Yuan Xing Lee , Hongwei Song
发明人： George Mathew , Shaohua Yang , Yuan Xing Lee , Hongwei Song
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。

2. 发明授权

US08743936B2 Systems and methods for determining noise components in a signal set 有权
标题翻译：用于确定信号组中噪声分量的系统和方法
公开(公告)号：US08743936B2
公开(公告)日：2014-06-03
申请号：US12652201
申请日：2010-01-05
申请人： George Mathew , Shaohua Yang , Yuan Xing Lee , Hongwei Song
发明人： George Mathew , Shaohua Yang , Yuan Xing Lee , Hongwei Song
IPC分类号： H04B17/00 , H04Q1/20
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。

3. 发明授权

US07990642B2 Systems and methods for storage channel testing 有权
标题翻译：存储通道测试的系统和方法
公开(公告)号：US07990642B2
公开(公告)日：2011-08-02
申请号：US12425757
申请日：2009-04-17
申请人： Yuan Xing Lee , George Mathew , Shaohua Yang , Hongwei Song , Weijun Tan , Hao Zhong
发明人： Yuan Xing Lee , George Mathew , Shaohua Yang , Hongwei Song , Weijun Tan , Hao Zhong
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。验证电路可操作以：接收写入数据，用第一噪声序列增加写入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。

4. 发明申请

US20110080211A1 Systems and Methods for Noise Reduced Data Detection 审中-公开
标题翻译：降噪数据检测系统和方法
公开(公告)号：US20110080211A1
公开(公告)日：2011-04-07
申请号：US12992948
申请日：2009-04-17
申请人： Shaohua Yang , Yuan Xing Lee , Richard Rauschmayer , Hongwei Song , Jingfeng Liu , Weijun Tan
发明人： Shaohua Yang , Yuan Xing Lee , Richard Rauschmayer , Hongwei Song , Jingfeng Liu , Weijun Tan
IPC分类号： H03K5/00
CPC分类号： G11B20/24 , G11B20/10037 , G11B20/10194 , G11B20/10527 , G11B20/1833 , G11B20/1879 , G11B2020/1062 , G11B2020/10685 , G11B2020/10694 , G11B2020/10759 , G11B2020/183 , G11B2020/185 , G11B2220/2516 , H03M13/1105 , H03M13/2948 , H03M13/3746 , H03M13/6343 , H04L1/005 , H04L1/0057
摘要： Various embodiments of the present invention provide systems and methods for data processing. For example, some embodiments of the present invention provide noise reduced data processing circuits. Such circuits include a selector circuit, a sample set averaging circuit, and a data detection circuit. The selector circuit provides either a new sample set or an averaged sample set as a sample output based on a select control signal. The sample set averaging circuit receives the new sample set and provides the averaged sample set. The averaged sample set is based upon two or more instances of the new sample set. The data detection circuit receives the sample output, and performs a data detection algorithm on the sample output and provides the select control signal and a data output.
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，本发明的一些实施例提供降噪数据处理电路。这种电路包括选择器电路，采样组平均电路和数据检测电路。选择器电路基于选择控制信号提供新的采样集或平均采样集作为采样输出。样本集平均电路接收新的样本集并提供平均的样本集。平均采样集基于新样本集的两个或多个实例。数据检测电路接收采样输出，对采样输出执行数据检测算法，提供选择控制信号和数据输出。

5. 发明申请

US20100083075A1 Methods and Apparatus for Selective Data Retention Decoding in a Hard Disk Drive 有权
标题翻译：用于硬盘驱动器中选择性数据保留解码的方法和装置
公开(公告)号：US20100083075A1
公开(公告)日：2010-04-01
申请号：US12241919
申请日：2008-09-30
申请人： Jingfeng Liu , Shaohua Yang , Hongwei Song , Yuan Xing Lee
发明人： Jingfeng Liu , Shaohua Yang , Hongwei Song , Yuan Xing Lee
IPC分类号： H03M13/05 , G06F11/14
CPC分类号： G11B20/18 , G11B2020/183 , G11B2220/2516 , H03M13/1105 , H03M13/2948 , H03M13/2957 , H03M13/6343
摘要： Methods and apparatus are provided for improved physical re-read operations in a hard disk drive. The disclosed methods and apparatus selectively retain data in a hard disk drive. A signal is read in an iterative read channel by assigning a reliability metric to each of a plurality of segments in a read signal; repeating the assigning step for a plurality of read operations; and selectively retaining the segments based on the assigned reliability metric. The read signal can be obtained by positioning a transducer over a storage media. The reliability metric may be based on soft bit decisions; log likelihood ratios or a noise estimation of a given segment.
摘要翻译：提供了用于改进硬盘驱动器中物理重读操作的方法和装置。所公开的方法和设备选择性地将数据保留在硬盘驱动器中。通过将读取信号中的多个段中的每一个分配可靠度度量，在迭代读取通道中读取信号; 重复多个读取操作的分配步骤; 并且基于所分配的可靠性度量选择性地保留段。可以通过将传感器定位在存储介质上来获得读取信号。可靠性度量可以基于软比特决策; 对数似然比或给定段的噪声估计。

6. 发明授权

US08225183B2 Methods and apparatus for selective data retention decoding in a hard disk drive 有权
标题翻译：用于在硬盘驱动器中进行选择性数据保存解码的方法和装置
公开(公告)号：US08225183B2
公开(公告)日：2012-07-17
申请号：US12241919
申请日：2008-09-30
申请人： Jingfeng Liu , Shaohua Yang , Hongwei Song , Yuan Xing Lee
发明人： Jingfeng Liu , Shaohua Yang , Hongwei Song , Yuan Xing Lee
IPC分类号： H03M13/00
CPC分类号： G11B20/18 , G11B2020/183 , G11B2220/2516 , H03M13/1105 , H03M13/2948 , H03M13/2957 , H03M13/6343
摘要： Methods and apparatus are provided for improved physical re-read operations in a hard disk drive. The disclosed methods and apparatus selectively retain data in a hard disk drive. A signal is read in an iterative read channel by assigning a reliability metric to each of a plurality of segments in a read signal; repeating the assigning step for a plurality of read operations; and selectively retaining the segments based on the assigned reliability metric. The read signal can be obtained by positioning a transducer over a storage media. The reliability metric may be based on soft bit decisions; log likelihood ratios or a noise estimation of a given segment.
摘要翻译：提供了用于改进硬盘驱动器中物理重读操作的方法和装置。所公开的方法和设备选择性地将数据保留在硬盘驱动器中。通过将读取信号中的多个段中的每一个分配可靠度度量，在迭代读取通道中读取信号; 重复多个读取操作的分配步骤; 并且基于所分配的可靠性度量选择性地保留段。可以通过将传感器定位在存储介质上来获得读取信号。可靠性度量可以基于软比特决策; 对数似然比或给定段的噪声估计。

7. 发明授权

US08045283B2 Amplitude-based approach for detection and classification of hard-disc defect regions 失效
标题翻译：基于幅度的硬盘缺陷区域检测和分类方法
公开(公告)号：US08045283B2
公开(公告)日：2011-10-25
申请号：US12729312
申请日：2010-03-23
申请人： Shaohua Yang , George Mathew , Yang Han , Zongwang Li , Yuan Xing Lee
发明人： Shaohua Yang , George Mathew , Yang Han , Zongwang Li , Yuan Xing Lee
IPC分类号： G11B27/36 , G11B5/02
CPC分类号： G11B20/1816 , G11B20/1883 , G11B2005/0018 , G11B2020/1823 , G11B2220/20 , G11B2220/2516
摘要： In a hard-disc drive, a defect region on the hard disc is classified as corresponding to either thermal asperity (TA) or media defect (MD) by generating two statistical measures. A first measure (e.g., α1) is based on (i) the magnitudes of one or both of signal values (e.g., equalizer input or output signal values) and the corresponding expected values of those signal values and (ii) the signs of one or both of the signal values and the expected signal values. A second measure (e.g., α2) is based on the magnitudes of one or both of the signal values and the expected signal values, but not the signs of either the signal values or the expected signal values. The two measures are then compared to determine whether the defect region corresponds to TA or MD.
摘要翻译：在硬盘驱动器中，通过产生两个统计测量值将硬盘上的缺陷区域分类为对应于热粗糙度（TA）或介质缺陷（MD）。第一测量（例如，α1）基于（i）信号值（例如，均衡器输入或输出信号值）中的一个或两个的大小以及那些信号值的相应期望值，以及（ii）一个或信号值和预期信号值两者。第二量度（例如，α2）基于信号值和预期信号值中的一个或两个的幅度，而不是信号值或期望信号值的符号。然后比较两个测量值以确定缺陷区域是否对应于TA或MD。

8. 发明申请

US20090235116A1 Systems and Methods for Regenerating Data from a Defective Medium 失效
标题翻译：从有缺陷的介质再生数据的系统和方法
公开(公告)号：US20090235116A1
公开(公告)日：2009-09-17
申请号：US12111902
申请日：2008-04-29
申请人： Weijun Tan , Shaohua Yang , George Mathew , Kelly Fitzpatrick , Hao Zhong , Yuan Xing Lee
发明人： Weijun Tan , Shaohua Yang , George Mathew , Kelly Fitzpatrick , Hao Zhong , Yuan Xing Lee
IPC分类号： G06F11/07
CPC分类号： G06F11/0793 , G06F11/0727 , G11B20/1816
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。

9. 发明授权

US08804260B2 Systems and methods for inter-track interference compensation 有权
标题翻译：轨道间干扰补偿的系统和方法
公开(公告)号：US08804260B2
公开(公告)日：2014-08-12
申请号：US13186174
申请日：2011-07-19
申请人： George Mathew , Jongseung Park , Shaohua Yang , Erich F. Haratsch , Ming Jin , Yuan Xing Lee
发明人： George Mathew , Jongseung Park , Shaohua Yang , Erich F. Haratsch , Ming Jin , Yuan Xing Lee
IPC分类号： G11B5/09
CPC分类号： G11B20/10046 , G11B5/012 , G11B5/09 , G11B19/045 , G11B20/10398 , G11B20/1217 , G11B2020/10759 , G11B2020/1232 , G11B2020/1298 , G11B2220/2516
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is discussed that includes: a data buffer, an inter-track interference response circuit, and an inter-track interference signal estimator circuit. The data buffer is operable to store a previous track data set. The inter-track interference response circuit is operable to estimate an inter-track interference response from the previous track data set based at least in part on the previous track data set and a current track data set. The inter-track interference signal estimator circuit is operable to calculate an inter-track interference from the previous track data set based at least in part on the previous track data set and the inter-track interference response from the previous track data set.
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。作为示例，讨论了包括数据缓冲器，轨道间干扰响应电路和轨道间干扰信号估计器电路的数据处理电路。数据缓冲器可操作以存储先前的轨迹数据集。轨道间干扰响应电路可用于至少部分地基于先前的轨道数据集和当前轨道数据集来估计来自先前轨道数据集的轨道间干扰响应。轨道间干扰信号估计器电路可用于至少部分地基于先前的轨道数据集和来自前一轨道数据集的轨道间干扰响应来计算来自先前轨道数据集的轨道间干扰。

10. 发明申请

US20120063022A1 Systems and Methods for Inter-track Interference Compensation 有权
标题翻译：轨道间干扰补偿的系统和方法
公开(公告)号：US20120063022A1
公开(公告)日：2012-03-15
申请号：US13186174
申请日：2011-07-19
申请人： George Mathew , Jongseung Park , Shaohua Yang , Erich F. Haratsch , Ming Jin , Yuan Xing Lee
发明人： George Mathew , Jongseung Park , Shaohua Yang , Erich F. Haratsch , Ming Jin , Yuan Xing Lee
IPC分类号： G11B5/09
CPC分类号： G11B20/10046 , G11B5/012 , G11B5/09 , G11B19/045 , G11B20/10398 , G11B20/1217 , G11B2020/10759 , G11B2020/1232 , G11B2020/1298 , G11B2220/2516
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is discussed that includes: a data buffer, an inter-track interference response circuit, and an inter-track interference signal estimator circuit. The data buffer is operable to store a previous track data set. The inter-track interference response circuit is operable to estimate an inter-track interference response from the previous track data set based at least in part on the previous track data set and a current track data set. The inter-track interference signal estimator circuit is operable to calculate an inter-track interference from the previous track data set based at least in part on the previous track data set and the inter-track interference response from the previous track data set.
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。作为示例，讨论了包括数据缓冲器，轨道间干扰响应电路和轨道间干扰信号估计器电路的数据处理电路。数据缓冲器可操作以存储先前的轨迹数据集。轨道间干扰响应电路可用于至少部分地基于先前的轨道数据集和当前轨道数据集来估计来自先前轨道数据集的轨道间干扰响应。轨道间干扰信号估计器电路可用于至少部分地基于先前的轨道数据集和来自前一轨道数据集的轨道间干扰响应来计算来自先前轨道数据集的轨道间干扰。

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