公开(公告)号：US09202519B2

公开(公告)日：2015-12-01

申请号：US14251350

申请日：2014-04-11

Applicant: LSI Corporation

Inventor： Bruce A. Wilson ,  Haitao Xia ,  Seongwook Jeong ,  Weijun Tan

IPC: G11B20/18 ,  G11B20/10 ,  H03M13/11

CPC classification number: G11B20/1833 ,  G11B20/10046 ,  G11B20/10509 ,  G11B2020/185 ,  G11B2020/1856 ,  G11B2020/1863 ,  H03M13/1142

Abstract: A communication system and a noise predictive calibration method are disclosed. The communication system includes a decoder configured to decode an input signal, wherein the decoder produces one of: a converged data output when the decoder decodes the input signal successfully, and a non-converged data output when the decoder decodes the input signal unsuccessfully. The communication system also includes a convergence monitor configured to determine a calibration procedure based on at least one of: a number of times where the decoder decodes successfully, and a number of times where the decoder decodes unsuccessfully. A noise predictive calibration circuit is configured to utilize output produced by the decoder without qualification when the convergence monitor indicates utilization of a first calibration procedure. The noise predictive calibration circuit is further configured to utilize only the converged data output produced by the decoder when the convergence monitor indicates utilization of a second calibration procedure.

Abstract translation: 公开了通信系统和噪声预测校准方法。 通信系统包括：解码器，被配置为对输入信号进行解码，其中解码器产生以下之一：当解码器成功地解码输入信号时的收敛数据输出;当解码器解码输入信号失败时，输出非收敛数据。 通信系统还包括汇聚监视器，其被配置为基于以下中的至少一个来确定校准过程：解码器成功解码解码的次数以及解码器不成功解码的次数。 当收敛监视器指示使用第一校准过程时，噪声预测校准电路被配置为利用解码器产生的输出而不限定。 噪声预测校准电路还被配置为当会聚监视器指示使用第二校准过程时仅利用由解码器产生的会聚数据输出。

公开(公告)号：US20150255109A1

公开(公告)日：2015-09-10

申请号：US14200228

申请日：2014-03-07

Applicant: LSI Corporation

Inventor： Bruce A. Wilson ,  Nayak Ratnakar Aravind ,  Haitao Xia

IPC: G11B20/10

CPC classification number: G11B20/10324 ,  G11B5/012 ,  G11B5/455 ,  G11B20/10009 ,  G11B20/10027 ,  G11B20/10037 ,  G11B2005/0016

Abstract: Systems and methods for magnetoresistive asymmetry estimation may include, but are not limited to, operations for: receiving a magnetic read head transducer output; computing a mean value of the magnetic read head transducer output; computing a median value of the magnetic read head transducer output; and applying a correction coefficient to a magnetic read head detector input according to at least the mean value of the magnetic read head transducer output and the median value of the magnetic read head transducer output.

Abstract translation: 用于磁阻非对称估计的系统和方法可以包括但不限于用于：接收磁读头传感器输出的操作; 计算磁读头传感器输出的平均值; 计算磁读头传感器输出的中值; 以及至少根据磁读头变换器输出的平均值和磁读头变换器输出的中值，向磁读头检测器输入施加校正系数。

公开(公告)号：US09019641B2

公开(公告)日：2015-04-28

申请号：US13714233

申请日：2012-12-13

Applicant: LSI Corporation

Inventor： Haotian Zhang ,  Yu Liao ,  Haitao Xia

IPC: G11B5/02 ,  G11B27/32 ,  H04B1/10 ,  G11B5/596

CPC classification number: G11B27/322 ,  G11B5/59616 ,  G11B20/10 ,  G11B27/3072 ,  G11B2220/2508 ,  H04B1/1027

Abstract: The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for detecting patterns in a data stream. In one case, a data processing system is disclosed that includes: a pattern detector circuit operable to generate a pattern value based upon a comparison of a defined pattern to a first portion of a received input; and a comparator circuit operable to compare the pattern value to an adapted threshold, and to selectively assert a pattern found signal based at least in part on the comparison of the pattern value and the adapted threshold, where the adapted threshold is adjusted based at least in part on a noise component of a second portion of the received input.

Abstract translation: 本发明涉及用于数据处理的系统和方法，更具体地涉及用于检测数据流中的模式的系统和方法。 在一种情况下，公开了一种数据处理系统，其包括：模式检测器电路，可操作以基于定义的模式与接收到的输入的第一部分的比较来生成模式值; 以及比较器电路，其可操作以将所述模式值与适应的阈值进行比较，并且至少部分地基于所述模式值与所述适应阈值的比较来选择性地断言模式发现信号，其中所述适应阈值至少基于 部分是接收输入的第二部分的噪声分量。

公开(公告)号：US20150062734A1

公开(公告)日：2015-03-05

申请号：US14015126

申请日：2013-08-30

Applicant: LSI Corporation

Inventor： Lu Pan ,  Lu Lu ,  Haitao Xia

IPC: G11B5/09

CPC classification number: G11B5/09 ,  G11B5/012 ,  G11B20/1833

Abstract: A storage system includes a storage medium operable to maintain a data set, a read/write head assembly operable to write the data set to the storage medium and to read the data set from the storage medium, a multi-level encoder operable to encode the data set at a plurality of different code rates before it is written to the storage medium, and a multi-level decoder operable to decode the data set retrieved from the storage medium and to apply decoded values encoded at a lower code rate when decoding values encoded at a higher code rate.

Abstract translation: 存储系统包括可操作以维持数据组的存储介质，可操作以将数据集写入存储介质并从存储介质读取数据集的读/写头组件，可操作以对存储介质进行编码的多电平编码器 数据在被写入存储介质之前以多种不同的代码率进行设置;以及多级解码器，其可操作以对从存储介质检索的数据集进行解码，并且在解码编码的值时应用以较低码率编码的解码值 以更高的代码率。

公开(公告)号：US08942037B2

公开(公告)日：2015-01-27

申请号：US13664583

申请日：2012-10-31

Applicant: LSI Corporation

Inventor： Haitao Xia ,  Fan Zhang ,  Ming Jin ,  Shaohua Yang

IPC: G11C11/34

CPC classification number: G11C16/06 ,  G11C16/34 ,  G11C16/349

Abstract: A method, apparatus, and controller for acquiring and tracking at least one threshold voltage of at least one cell of at least one flash chip. The method can include acquiring the at least one threshold voltage of a particular cell of the at least one flash cell. The method can further include performing at least one threshold voltage adjustment iteration.

Abstract translation: 一种用于获取和跟踪至少一个闪存芯片的至少一个单元的至少一个阈值电压的方法，装置和控制器。 该方法可以包括获取至少一个闪存单元的特定单元的至少一个阈值电压。 该方法还可以包括执行至少一个阈值电压调整迭代。

公开(公告)号：US08917470B2

公开(公告)日：2014-12-23

申请号：US13798566

申请日：2013-03-13

Applicant: LSI Corporation

Inventor： Yu Liao ,  Haitao Xia

IPC: G11B5/035 ,  G11B20/10

CPC classification number: G11B20/10046

Abstract: A method for detecting a data sequence includes generating a sample stream, which is a time-sequenced digital signal associated with samples of an analog signal. The sample stream is input to n equalization filter banks, which each have m equalization filters to generate m equalized sample streams. The m equalized sample streams from each equalization filter bank are input to a corresponding one of n noise predictive filters. Each noise predictive filter is an m-tap noise predictive filter that receives the m equalized sample streams from a corresponding one of the n equalization filter banks. Each noise predictive filter is associated with one of n data patterns. A filtered equalization stream is generated by each noise predictive filter. Noise sample streams are generated using the filtered equalization streams generated by the n noise predictive filters. A data sequence is detected using the noise sample streams.

Abstract translation: 一种用于检测数据序列的方法包括产生样本流，其是与模拟信号的样本相关联的时间序列数字信号。 样本流被输入到n个均衡滤波器组，每个均衡滤波器组具有m个均衡滤波器以产生m个均衡的采样流。 来自每个均衡滤波器组的m个均衡的采样流被输入到n个噪声预测滤波器中的对应的一个。 每个噪声预测滤波器是从n个均衡滤波器组中的相应一个接收m个均衡的采样流的m抽头噪声预测滤波器。 每个噪声预测滤波器与n个数据模式之一相关联。 滤波均衡流由每个噪声预测滤波器产生。 使用由n个噪声预测滤波器生成的滤波均衡流来生成噪声采样流。 使用噪声样本流检测数据序列。

公开(公告)号：US08902525B1

公开(公告)日：2014-12-02

申请号：US13962219

申请日：2013-08-08

Applicant: LSI Corporation

Inventor： Bruce A. Wilson ,  Jianzhong Huang ,  Haitao Xia ,  Lu Lu

IPC: G11B5/09

CPC classification number: G11B20/10481

Abstract: The present invention is related to systems and methods for adaptive parameter modification in a data processing system.

Abstract translation: 本发明涉及用于数据处理系统中的自适应参数修改的系统和方法。

公开(公告)号：US08873180B2

公开(公告)日：2014-10-28

申请号：US13856210

申请日：2013-04-03

Applicant: LSI Corporation

Inventor： Yu Liao ,  Haotian Zhang ,  Haitao Xia

IPC: G11B5/09 ,  G11B27/30 ,  H04L7/033

CPC classification number: H04L7/0331 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/10222 ,  H04L7/0062 ,  H04L7/04

Abstract: Embodiments of the invention can be manifested as methods for converting analog waveforms into digital sampled signals. In at least one such embodiment, the method includes (i) sampling, based on a sampling-clock signal, an analog waveform received from a transmission channel to generate a digital sampled signal, (ii) generating a digital target signal by applying a specified reference data pattern to a model of the transmission channel, and (iii) adjusting the sampling-clock signal by comparing the digital sampled signal to the digital target signal. Embodiments of the invention can also be manifested as apparatuses that convert analog waveforms into digital sampled signals.

Abstract translation: 本发明的实施例可以表现为将模拟波形转换为数字采样信号的方法。 在至少一个这样的实施例中，该方法包括（i）基于采样时钟信号对从传输信道接收的模拟波形进行采样以产生数字采样信号，（ii）通过应用指定的 参考数据模式到传输信道的模型，以及（iii）通过将数字采样信号与数字目标信号进行比较来调整采样时钟信号。 本发明的实施例也可以表现为将模拟波形转换为数字采样信号的装置。

公开(公告)号：US08861112B1

公开(公告)日：2014-10-14

申请号：US14261395

申请日：2014-04-24

Applicant: LSI Corporation

Inventor： Lu Pan ,  Rui Cao ,  Haitao Xia

IPC: G11B5/09

CPC classification number: G11B5/09 ,  G11B5/3977 ,  G11B5/4886 ,  G11B5/59644

Abstract: An apparatus for estimating head separation in an array reader magnetic recording system includes an array reader with multiple read heads operable to read data from a magnetic storage medium, a first preamplifier connected to a first read head, a second preamplifier connected to a second read head, and a head separation estimation circuit connected to the first preamplifier and to the second preamplifier, operable to estimate an integer phase offset and a fractional phase offset between a first signal from the first read head and a second signal from the second read head.

Abstract translation: 一种用于估计阵列读取器磁记录系统中的磁头分离的装置，包括阵列读取器，具有可操作以从磁存储介质读取数据的多个读取头，连接到第一读取头的第一前置放大器，连接到第二读取头的第二前置放大器 以及连接到第一前置放大器和第二前置放大器的头部分离估计电路，其可操作以估计来自第一读取头的第一信号和来自第二读取头的第二信号之间的整数相位偏移和分数相位偏移。

公开(公告)号：US08854762B2

公开(公告)日：2014-10-07

申请号：US13710351

申请日：2012-12-10

Applicant: LSI Corporation

Inventor： Lu Lu ,  Haotian Zhang ,  Haitao Xia

IPC: G11B5/035 ,  G11B5/09 ,  G11B20/10

CPC classification number: G11B20/10046

Abstract: Systems, methods, devices, circuits for data processing, and more particularly to data processing including operational marginalization capability.

Abstract translation: 用于数据处理的系统，方法，设备，电路，更具体地涉及包括操作边缘化能力的数据处理。