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1. 发明授权

US08422609B2 Automatic filter-reset mechanism 失效
标题翻译：自动过滤器复位机构
公开(公告)号：US08422609B2
公开(公告)日：2013-04-16
申请号：US12570326
申请日：2009-09-30
申请人： Jingfeng Liu , Haotian Zhang , Hongwei Song , Lingyan Sun
发明人： Jingfeng Liu , Haotian Zhang , Hongwei Song , Lingyan Sun
IPC分类号： H04B1/10
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/10481 , H03H17/0294
摘要： In one embodiment, a (hard-drive) read channel has a (DFIR equalization) filter, whose tap coefficients are adaptively updated. A reset controller monitors an (LLR) signal generated downstream of the filter to automatically determine when to reset the filter, e.g., by reloading an initial set of user-specified tap coefficients. For LLR values, the reset controller determines to reset the filter when the reset controller detects that too many recent LLR values have confidence values that are too low. When implemented in a hard-drive read channel, the reset controller can reset the filter one or more times during read operations within a sector of the hard drive.
摘要翻译：在一个实施例中，（硬盘驱动器）读通道具有（DFIR均衡）滤波器，其抽头系数被自适应地更新。复位控制器监视在滤波器下游产生的（LLR）信号，以自动确定何时复位滤波器，例如通过重新加载用户指定的抽头系数的初始集合。对于LLR值，当复位控制器检测到过多的近期LLR值具有太低的置信度值时，复位控制器确定复位滤波器。当在硬盘驱动器读取通道中实现时，复位控制器可以在硬盘驱动器的扇区内的读取操作期间复位一次或多次过滤器。

2. 发明授权

US08312359B2 Branch-metric calibration using varying bandwidth values 有权
标题翻译：使用不同带宽值的分支校准校准
公开(公告)号：US08312359B2
公开(公告)日：2012-11-13
申请号：US12562200
申请日：2009-09-18
申请人： Jingfeng Liu , Hongwei Song , Lingyan Sun
发明人： Jingfeng Liu , Hongwei Song , Lingyan Sun
IPC分类号： H03M13/03 , G06F11/00
CPC分类号： H03M13/1102 , H03M13/296 , H03M13/3961 , H03M13/41 , H03M13/6343
摘要： In one embodiment, a signal processing receiver has a branch-metric calibration (BMC) unit that receives (i) sets of four hard-decision bits from a channel detector and (ii) a noise estimate. The BMC unit has two or more update blocks (e.g., tap-weight update and/or bias-compensation blocks) that generate updated parameters used by a branch-metric unit of the channel detector to improve channel detection. The two or more update blocks generate the updated parameters based on (i) the sets of four hard-decision bits, (ii) the noise estimate, and (iii) bandwidth values. The bandwidth values for at least two of the two or more update blocks are selected such that they are different from one another. Selecting different bandwidth values may reduce the bit-error rate for the receiver over the bit-error rate that may be achieved by selecting the bandwidth values to be the same as one another.
摘要翻译：在一个实施例中，信号处理接收机具有分支量测校准（BMC）单元，其接收（i）来自信道检测器的四个硬判决位的集合，以及（ii）噪声估计。 BMC单元具有两个或多个更新块（例如抽头重量更新和/或偏置补偿块），其生成由信道检测器的分支度量单元使用的更新参数以改善信道检测。两个或多个更新块基于（i）四个硬判决位的集合，（ii）噪声估计和（iii）带宽值）来生成更新的参数。选择两个或多个更新块中的至少两个的带宽值使得它们彼此不同。选择不同的带宽值可以通过选择彼此相同的带宽值来实现的比特错误率降低接收机的比特误码率。

3. 发明授权

US08670955B2 Systems and methods for reliability assisted noise predictive filtering 有权
标题翻译：可靠性辅助噪声预测滤波的系统和方法
公开(公告)号：US08670955B2
公开(公告)日：2014-03-11
申请号：US13088178
申请日：2011-04-15
申请人： Lingyan Sun , Hongwei Song , Jingfeng Liu
发明人： Lingyan Sun , Hongwei Song , Jingfeng Liu
IPC分类号： G06F19/00 , G11B5/09
CPC分类号： G11B20/10287 , G11B20/10009 , G11B20/10296 , G11B20/10509
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is disclosed that includes: a data detector circuit, a calibration circuit, and an enable circuit. The data detector circuit is operable to apply a data detection algorithm to a data input to yield a detected output based at least in part on control values. The calibration circuit operable to update the control values based at least in part on the data input, the detected output, and a calibration circuit enable. The calibration circuit enable is generated by the enable circuit based at least in part on the detected 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。作为示例，公开了一种数据处理电路，其包括：数据检测器电路，校准电路和使能电路。数据检测器电路可操作以将数据检测算法应用于数据输入，以至少部分地基于控制值产生检测到的输出。校准电路可操作以至少部分地基于数据输入，检测到的输出和校准电路使能来更新控制值。校准电路使能由至少部分地基于所检测的输出的使能电路产生。

4. 发明申请

US20110075718A1 Automatic Filter-Reset Mechanism 失效
标题翻译：自动过滤器复位机制
公开(公告)号：US20110075718A1
公开(公告)日：2011-03-31
申请号：US12570326
申请日：2009-09-30
申请人： Jingfeng Liu , Haotian Zhang , Hongwei Song , Lingyan Sun
发明人： Jingfeng Liu , Haotian Zhang , Hongwei Song , Lingyan Sun
IPC分类号： H04L27/01
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/10481 , H03H17/0294
摘要： In one embodiment, a (hard-drive) read channel has a (DFIR equalization) filter, whose tap coefficients are adaptively updated. A reset controller monitors an (LLR) signal generated downstream of the filter to automatically determine when to reset the filter, e.g., by reloading an initial set of user-specified tap coefficients. For LLR values, the reset controller determines to reset the filter when the reset controller detects that too many recent LLR values have confidence values that are too low. When implemented in a hard-drive read channel, the reset controller can reset the filter one or more times during read operations within a sector of the hard drive.
摘要翻译：在一个实施例中，（硬盘驱动器）读通道具有（DFIR均衡）滤波器，其抽头系数被自适应地更新。复位控制器监视在滤波器下游产生的（LLR）信号，以自动确定何时复位滤波器，例如通过重新加载用户指定的抽头系数的初始集合。对于LLR值，当复位控制器检测到过多的近期LLR值具有太低的置信度值时，复位控制器确定复位滤波器。当在硬盘驱动器读取通道中实现时，复位控制器可以在硬盘驱动器的扇区内的读取操作期间复位一次或多次过滤器。

5. 发明申请

US20110072335A1 BRANCH-METRIC CALIBRATION USING VARYING BANDWIDTH VALUES 有权
标题翻译：使用变化带宽值进行分支校准
公开(公告)号：US20110072335A1
公开(公告)日：2011-03-24
申请号：US12562200
申请日：2009-09-18
申请人： Jingfeng Liu , Hongwei Song , Lingyan Sun
发明人： Jingfeng Liu , Hongwei Song , Lingyan Sun
IPC分类号： H03M13/03 , G06F11/00
CPC分类号： H03M13/1102 , H03M13/296 , H03M13/3961 , H03M13/41 , H03M13/6343
摘要： In one embodiment, a signal processing receiver has a branch-metric calibration (BMC) unit that receives (i) sets of four hard-decision bits from a channel detector and (ii) a noise estimate. The BMC unit has two or more update blocks (e.g., tap-weight update and/or bias-compensation blocks) that generate updated parameters used by a branch-metric unit of the channel detector to improve channel detection. The two or more update blocks generate the updated parameters based on (i) the sets of four hard-decision bits, (ii) the noise estimate, and (iii) bandwidth values. The bandwidth values for at least two of the two or more update blocks are selected such that they are different from one another. Selecting different bandwidth values may reduce the bit-error rate for the receiver over the bit-error rate that may be achieved by selecting the bandwidth values to be the same as one another.
摘要翻译：在一个实施例中，信号处理接收机具有分支量测校准（BMC）单元，其接收（i）来自信道检测器的四个硬判决位的集合，以及（ii）噪声估计。 BMC单元具有两个或多个更新块（例如抽头重量更新和/或偏置补偿块），其生成由信道检测器的分支度量单元使用的更新参数以改善信道检测。两个或多个更新块基于（i）四个硬判决位的集合，（ii）噪声估计和（iii）带宽值）来生成更新的参数。选择两个或多个更新块中的至少两个的带宽值使得它们彼此不同。选择不同的带宽值可以通过选择彼此相同的带宽值来实现的比特错误率降低接收机的比特误码率。

6. 发明申请

US20120265488A1 Systems and Methods for Reliability Assisted Noise Predictive Filtering 有权
标题翻译：可靠性辅助噪声预测滤波系统与方法
公开(公告)号：US20120265488A1
公开(公告)日：2012-10-18
申请号：US13088178
申请日：2011-04-15
申请人： Lingyan Sun , Hongwei Song , Jingfeng Liu
发明人： Lingyan Sun , Hongwei Song , Jingfeng Liu
IPC分类号： G06F19/00 , G11B5/09
CPC分类号： G11B20/10287 , G11B20/10009 , G11B20/10296 , G11B20/10509
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is disclosed that includes: a data detector circuit, a calibration circuit, and an enable circuit. The data detector circuit is operable to apply a data detection algorithm to a data input to yield a detected output based at least in part on control values. The calibration circuit operable to update the control values based at least in part on the data input, the detected output, and a calibration circuit enable. The calibration circuit enable is generated by the enable circuit based at least in part on the detected 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。作为示例，公开了一种数据处理电路，其包括：数据检测器电路，校准电路和使能电路。数据检测器电路可操作以将数据检测算法应用于数据输入，以至少部分地基于控制值产生检测到的输出。校准电路可操作以至少部分地基于数据输入，检测到的输出和校准电路使能来更新控制值。校准电路使能由至少部分地基于所检测的输出的使能电路产生。

7. 发明授权

US08838660B2 Systems and methods for reducing filter sensitivities 有权
标题翻译：降低过滤器灵敏度的系统和方法
公开(公告)号：US08838660B2
公开(公告)日：2014-09-16
申请号：US12972942
申请日：2010-12-20
申请人： Yu Liao , Hongwei Song , Lingyan Sun
发明人： Yu Liao , Hongwei Song , Lingyan Sun
IPC分类号： G06F17/10 , H03H21/00 , G11B20/10
CPC分类号： H03H21/0012 , G11B20/10055 , G11B20/10462 , G11B2220/2516 , H03H21/0067
摘要： Various embodiments of the present invention provide systems and methods for reducing filter sensitivities. As an example, reduced sensitivity filter circuits are discussed that include a digital filter and a filter tap adaptation circuit. The digital filter is operable to filter a received input based at least in part on a plurality of filter taps, and to provide a filtered output. The filter tap adaptation circuit is operable to receive an error value and a weighting control value, and to adaptively calculate at least one of the filter taps using the error value and the weighting control value.
摘要翻译：本发明的各种实施例提供了用于降低过滤器灵敏度的系统和方法。作为示例，讨论了包括数字滤波器和滤波器抽头适配电路的降低灵敏度滤波器电路。数字滤波器可操作以至少部分地基于多个滤波器抽头对接收到的输入进行滤波，并提供滤波输出。滤波器抽头适配电路可操作以接收误差值和加权控制值，并且使用误差值和加权控制值自适应地计算滤波器抽头中的至少一个。

8. 发明授权

US08122332B2 Method and apparatus for error compensation 有权
标题翻译：误差补偿方法和装置
公开(公告)号：US08122332B2
公开(公告)日：2012-02-21
申请号：US12621879
申请日：2009-11-19
申请人： Hongwei Song , Lingyan Sun
发明人： Hongwei Song , Lingyan Sun
IPC分类号： H03M13/03 , H03D1/00
CPC分类号： H03M13/3746 , G11B20/10009 , G11B20/10055 , G11B20/10296 , G11B20/18 , G11B2020/1863 , H03M13/098 , H03M13/2707 , H03M13/41 , H03M13/4146 , H03M13/6343
摘要： Various approaches to recover data are described. An one example, an encoded data stream is processed in a first channel decoder producing a channel decoder output. The channel decoder output and the encoded data stream are processed in an error compensation unit to compensate the channel decoder output for low frequency noise and produce an error compensated data stream. The error compensated data stream is processed in a second channel decoder to produce a recovered data stream, wherein the recovered data stream has a reduction in the number of errors as compared to the encoded data stream. Systems to iteratively recover data from an encoded data stream are also described.
摘要翻译：描述了恢复数据的各种方法。一个示例，编码数据流在产生信道解码器输出的第一信道解码器中被处理。信道解码器输出和编码数据流在误差补偿单元中被处理以补偿信道解码器输出的低频噪声并产生误差补偿数据流。误差补偿数据流在第二信道解码器中被处理以产生恢复的数据流，其中恢复的数据流与编码的数据流相比具有减少的错误数量。还描述了从编码数据流迭代地恢复数据的系统。

9. 发明申请

US20100332954A1 Systems and Methods for Out of Order Y-Sample Memory Management 有权
标题翻译：系统和方法不合格Y样本内存管理
公开(公告)号：US20100332954A1
公开(公告)日：2010-12-30
申请号：US12491038
申请日：2009-06-24
申请人： Lingyan Sun , Hongwei Song , Yuan Xing Lee
发明人： Lingyan Sun , Hongwei Song , Yuan Xing Lee
IPC分类号： G06F12/00 , H03M13/05 , G06F11/10
CPC分类号： H03M13/45 , H03M13/1145 , H03M13/3905 , H03M13/4146
摘要： Various embodiments of the present invention provide systems and methods for out of order memory management. For example, a method for out of order data processing is disclosed. The method includes providing an out of order codeword memory circuit that includes a number of codeword memory locations in a codeword memory area and the same number of index values in an index area. Each of the index values corresponds to a respective one of the codeword memory locations. The methods further include receiving a data set; storing the data set to one of the codeword memory locations; receiving an indication that the data set stored in the one of the codeword memory locations has completed processing; and grouping an index value corresponding to the one of the codeword memory locations with one or more other index values corresponding to unused codeword memory locations.
摘要翻译：本发明的各种实施例提供了用于故障存储器管理的系统和方法。例如，公开了一种用于乱序数据处理的方法。该方法包括提供一个乱序码字存储器电路，其包括码字存储器区域中的多个码字存储器位置和索引区域中相同数量的索引值。每个索引值对应于码字存储器位置中的相应一个。所述方法还包括接收数据集; 将所述数据集存储到所述码字存储器位置之一; 接收存储在码字存储器位置之一中的数据集已经完成处理的指示; 以及将与所述码字存储器位置之一相对应的索引值与对应于未使用的码字存储器位置的一个或多个其他索引值进行分组。

10. 发明授权

US08352841B2 Systems and methods for out of order Y-sample memory management 有权
标题翻译：系统和方法进行无序Y采样存储器管理
公开(公告)号：US08352841B2
公开(公告)日：2013-01-08
申请号：US12491038
申请日：2009-06-24
申请人： Lingyan Sun , Hongwei Song , Yuan Xing Lee
发明人： Lingyan Sun , Hongwei Song , Yuan Xing Lee
IPC分类号： H03M13/00
CPC分类号： H03M13/45 , H03M13/1145 , H03M13/3905 , H03M13/4146
摘要： Various embodiments of the present invention provide systems and methods for out of order memory management. For example, a method for out of order data processing is disclosed. The method includes providing an out of order codeword memory circuit that includes a number of codeword memory locations in a codeword memory area and the same number of index values in an index area. Each of the index values corresponds to a respective one of the codeword memory locations. The methods further include receiving a data set; storing the data set to one of the codeword memory locations; receiving an indication that the data set stored in the one of the codeword memory locations has completed processing; and grouping an index value corresponding to the one of the codeword memory locations with one or more other index values corresponding to unused codeword memory locations.
摘要翻译：本发明的各种实施例提供了用于故障存储器管理的系统和方法。例如，公开了一种用于乱序数据处理的方法。该方法包括提供一个乱序码字存储器电路，其包括码字存储器区域中的多个码字存储器位置和索引区域中相同数量的索引值。每个索引值对应于码字存储器位置中的相应一个。所述方法还包括接收数据集; 将所述数据集存储到所述码字存储器位置之一; 接收存储在码字存储器位置之一中的数据集已经完成处理的指示; 以及将与所述码字存储器位置之一相对应的索引值与对应于未使用的码字存储器位置的一个或多个其他索引值进行分组。

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