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1. 发明申请

WO2010039161A2 METHODS AND APPARATUS FOR SELECTIVE DATA RETENTION DECODING IN A HARD DISK DRIVE 审中-公开
标题翻译：用于硬盘驱动器中选择性数据保持解码的方法和装置
公开(公告)号：WO2010039161A2
公开(公告)日：2010-04-08
申请号：PCT/US2008/088224
申请日：2008-12-23
申请人： LSI CORPORATION , LIU, Jingfeng , YANG, Shaohua , SONG, Hongwei , LEE, Yuan, Xing
发明人： LIU, Jingfeng , YANG, Shaohua , SONG, Hongwei , LEE, Yuan, Xing
IPC分类号： G11B20/18 , H03M13/11
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的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，通过向读取信号中的多个段中的每一个分配可靠性度量，在迭代读取通道中读取A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。

2. 发明申请

WO2010080155A1 SYSTEMS AND METHODS FOR ADAPTIVE TARGET SEARCH 审中-公开
标题翻译：自适应目标搜索的系统和方法
公开(公告)号：WO2010080155A1
公开(公告)日：2010-07-15
申请号：PCT/US2009/030639
申请日：2009-01-09
申请人： LSI CORPORATION , LIU, Jingfeng , SONG, Hongwei
发明人： LIU, Jingfeng , SONG, Hongwei
IPC分类号： G11B5/02 , G11B5/035 , G11B21/02 , G11B20/10
CPC分类号： G11B20/10009 , G11B5/035 , G11B5/09 , G11B20/10046 , G11B20/10212 , G11B20/10481 , G11B2220/2516
摘要： Various embodiments of the present invention provide systems and methods for data processing. For example, some embodiments of the present invention provide data processing circuits that include both a main data processing circuit and an adaptive setting determination circuit. The main data processing circuit receives a series of data samples and includes: an equalizer circuit and a data detector circuit. The equalizer circuit receives the series of data samples and provides an equalized output. The equalizer circuit is controlled at least in part by a coefficient. The data detector circuit receives the equalizer output and provides a main data output based at least in part on a target. The adaptive setting determination circuit receives the series of data samples and the main data output, and operates in parallel with the main data processing circuit to adaptively determine the coefficient and the target.
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了包括主数据处理电路和自适应设置确定电路的数据处理电路。主数据处理电路接收一系列数据样本，包括：均衡器电路和数据检测器电路。均衡器电路接收一系列数据样本并提供均衡的输出。均衡器电路至少部分地由系数控制。数据检测器电路接收均衡器输出并且至少部分地基于目标提供主数据输出。自适应设置确定电路接收一系列数据样本和主数据输出，并与主数据处理电路并行操作，以自适应地确定系数和目标。

3. 发明申请

WO2012138747A1 METHOD AND APPARATUS FOR DETECTING LAND PRE-PITS 审中-公开
标题翻译：检测土地利用前景的方法和装置
公开(公告)号：WO2012138747A1
公开(公告)日：2012-10-11
申请号：PCT/US2012/032152
申请日：2012-04-04
申请人： MARVELL WORLD TRADE, LTD. , OBERG, Mats , LIU, Jingfeng
发明人： OBERG, Mats , LIU, Jingfeng
IPC分类号： G11B7/005
CPC分类号： G11B7/0053 , G11B7/00736 , G11B7/00745 , G11B20/10037 , G11B20/10268 , G11B20/10342 , G11B20/10462 , G11B20/10509 , G11B20/1217 , G11B2020/1239 , G11B2020/1274 , G11B2020/1287 , G11B2220/2562
摘要： Aspects of the disclosure provide a method for detecting land pre-pits. The method includes detecting, based on a land pre-pit threshold, a land pre-pit data stream from a signal responsive to land pre-pits on an optical medium, comparing a characteristic of the detected land pre-pit data stream in a specific number of wobble periods with a pre-determined land pre-pit characteristic in the specific number of wobble periods, and adjusting the land pre-pit threshold based on the comparison.
摘要翻译：本公开的方面提供了一种用于检测土地预制坑的方法。该方法包括基于陆地预制坑阈值，从响应于光学介质上的陆地预制坑的信号中检测陆地预制坑数据流，将检测到的陆地预制坑数据流的特性与特定的具有在特定数量的摆动周期中具有预定的预定凹坑特性的摆动周期的数量，以及基于该比较来调整土地预制坑阈值。

4. 发明申请

WO2010059264A1 SYSTEMS AND METHODS FOR NOISE REDUCED DATA DETECTION 审中-公开
标题翻译：用于噪声减少数据检测的系统和方法
公开(公告)号：WO2010059264A1
公开(公告)日：2010-05-27
申请号：PCT/US2009/040986
申请日：2009-04-17
申请人： LSI CORPORATION , YANG, Shaohua , LEE, Yuan, Xing , RAUSCHMAYER, Richard , SONG, Hongwei , LIU, Jingfeng , TAN, Weijun
发明人： YANG, Shaohua , LEE, Yuan, Xing , RAUSCHMAYER, Richard , SONG, Hongwei , LIU, Jingfeng , TAN, Weijun
IPC分类号： G11B20/24 , G11B20/10
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

WO2009051657A1 METHOD AND APPARATUS FOR DETECTING LAND PRE-PITS 审中-公开
标题翻译：检测土地利用前景的方法和装置
公开(公告)号：WO2009051657A1
公开(公告)日：2009-04-23
申请号：PCT/US2008/011638
申请日：2008-10-10
申请人： MARVELL WORLD TRADE LTD. , LIU, Jingfeng
发明人： LIU, Jingfeng
IPC分类号： G11B20/12
CPC分类号： G11B20/1217 , G11B7/0053 , G11B7/00745 , G11B20/10037 , G11B2020/1274 , G11B2020/1287
摘要： Aspects of the disclosure provide a method for detecting land pre-pits. The method can adaptively adjust a threshold for detecting the land pre-pits in order to improve the correctness of detecting. The method for detecting land pre-pits can include extracting a land pre-pit data stream from a reading signal based on a land pre-pit threshold, the reading signal corresponding to land pre-pits of an optical medium, comparing the land pre-pit data stream with format information of the optical medium to obtain an error signal, and adjusting the land pre-pit threshold based on the error signal.
摘要翻译：本公开的方面提供了一种用于检测土地预制坑的方法。该方法可以自适应地调整检测土地预制坑的阈值，以提高检测的正确性。用于检测陆地预制凹坑的方法可以包括基于陆地预制坑阈值从读取信号中提取陆地预制凹坑数据流，所述读取信号对应于光学介质的陆地预制凹坑，具有光介质的格式信息的凹坑数据流，以获得误差信号，并且基于误差信号调整焊盘预凹陷阈值。

6. 发明申请

WO2010039161A3 METHODS AND APPARATUS FOR SELECTIVELY RETAINING READ SIGNAL SEGMENTS BASED ON ASSIGNED RELIABILITY METRICS IN A HARD DISK DRIVE 审中-公开
标题翻译：基于硬盘驱动器中分配的可靠性度量的选择性保留读取信号段的方法和装置
公开(公告)号：WO2010039161A3
公开(公告)日：2010-09-16
申请号：PCT/US2008088224
申请日：2008-12-23
申请人： LSI CORP , LIU JINGFENG , YANG SHAOHUA , SONG HONGWEI , LEE YUAN XING
发明人： LIU JINGFENG , YANG SHAOHUA , SONG HONGWEI , LEE YUAN XING
IPC分类号： G11B20/18 , H03M13/11 , H03M13/29
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的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，通过向读取信号中的多个段中的每一个分配可靠性度量，在迭代读取通道中读取A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。读取信号可以通过将传感器定位在存储介质上来获得。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

US08175201B2 Systems and methods for adaptive equalization in recording channels 有权
标题翻译：记录通道自适应均衡的系统和方法
公开(公告)号：US08175201B2
公开(公告)日：2012-05-08
申请号：US12663325
申请日：2008-10-27
申请人： George Mathew , Yuan Xing Lee , Hongwei Song , Liu Jingfeng , Jongseung Park
发明人： George Mathew , Yuan Xing Lee , Hongwei Song , Liu Jingfeng , Jongseung Park
IPC分类号： H03D1/06 , H03D11/04 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08
CPC分类号： G11B19/041 , G11B5/09 , G11B20/10009 , G11B20/10046 , G11B20/10481 , G11B2220/2516
摘要： Various embodiments of the present invention provide systems and methods for performing adaptive equalization. For example, various embodiments of the present invention provide methods for adaptive equalization that include providing a data processing system with an equalizer circuit (210) and a target filter circuit (265). The equalizer circuit performs equalization based at least in part on an equalizer coefficient (215). The methods further include generating an error (285) based upon a first output from the equalizer circuit and a second output from the target filter circuit. An inter-symbol interference component (295) is extracted from the error (285) and used to calculate an equalizer gradient (226). Based at least in part on the equalizer gradient (226), the equalizer coefficient (215) is calculated.
摘要翻译：本发明的各种实施例提供了用于执行自适应均衡的系统和方法。例如，本发明的各种实施例提供了用于自适应均衡的方法，其包括向数据处理系统提供均衡器电路（210）和目标滤波器电路（265）。均衡器电路至少部分地基于均衡器系数（215）来执行均衡。所述方法还包括基于均衡器电路的第一输出和来自目标滤波器电路的第二输出产生误差（285）。从误差（285）提取符号间干扰分量（295），并用于计算均衡器梯度（226）。至少部分基于均衡器梯度（226），计算均衡器系数（215）。

8. 发明申请

US20100287420A1 Systems and Methods for Adaptive Equalization in Recording Channels 有权
标题翻译：记录通道自适应均衡的系统和方法
公开(公告)号：US20100287420A1
公开(公告)日：2010-11-11
申请号：US12663325
申请日：2008-10-27
申请人： George Mathew , Yuan Xing Lee , Hongwei Song , Liu Jingfeng , Jongseung Park
发明人： George Mathew , Yuan Xing Lee , Hongwei Song , Liu Jingfeng , Jongseung Park
IPC分类号： G06F11/07
CPC分类号： G11B19/041 , G11B5/09 , G11B20/10009 , G11B20/10046 , G11B20/10481 , G11B2220/2516
摘要： Various embodiments of the present invention provide systems and methods for performing adaptive equalization. For example, various embodiments of the present invention provide methods for adaptive equalization that include providing a data processing system with an equalizer circuit (210) and a target filter circuit (265). The equalizer circuit performs equalization based at least in part on an equalizer coefficient (215). The methods further include generating an error (285) based upon a first output from the equalizer circuit and a second output from the target filter circuit. An inter-symbol interference component (295) is extracted from the error (285) and used to calculate an equalizer gradient (226). Based at least in part on the equalizer gradient (226), the equalizer coefficient (215) is calculated.
摘要翻译：本发明的各种实施例提供了用于执行自适应均衡的系统和方法。例如，本发明的各种实施例提供了用于自适应均衡的方法，其包括向数据处理系统提供均衡器电路（210）和目标滤波器电路（265）。均衡器电路至少部分地基于均衡器系数（215）来执行均衡。所述方法还包括基于均衡器电路的第一输出和来自目标滤波器电路的第二输出产生误差（285）。从误差（285）提取符号间干扰分量（295），并用于计算均衡器梯度（226）。至少部分地基于均衡器梯度（226），计算均衡器系数（215）。

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