公开(公告)号：US09123383B1

公开(公告)日：2015-09-01

申请号：US14197748

申请日：2014-03-05

Applicant: LSI Corporation

Inventor： Xuebin Wu ,  Shaohua Yang ,  Zhi Bin Li ,  Haitao Xia

IPC: G11B20/20 ,  G11B20/10 ,  G11B5/09

CPC classification number: G11B20/1024 ,  G11B20/10037

Abstract: A data storage system identifies analog-to-digital conversion samples with amplitude below a certain threshold. Remaining samples are grouped according to phase into one or more quadrants. A multi-coordinate with overlapping quadrants is used to further differentiate sample points. The system then computes an average phase for zero phase start estimation.

Abstract translation: 数据存储系统识别幅度低于某一阈值的模数转换样本。 剩余样品根据阶段分组成一个或多个象限。 使用具有重叠象限的多坐标来进一步区分采样点。 然后，该系统计算零相位开始估计的平均相位。

公开(公告)号：US20150015986A1

公开(公告)日：2015-01-15

申请号：US14323286

申请日：2014-07-03

Applicant: LSI Corporation

Inventor： Linjiang Guo ,  Zhi Bin Li ,  Yao Zhao ,  Dahua Qin

IPC: G11B5/596

CPC classification number: G11B5/59627 ,  G11B5/59688

Abstract: Improved threshold adaptation is provided for a predefined pattern in data. A detection threshold employed by a Euclidean detector to detect a pattern (such as a Servo Address Mark) in data is adapted by determining a minimum Euclidean distance metric Dp before the pattern is declared in a given portion of the data; determining a Euclidean distance metric Ds at a time when the pattern is found in the given portion, wherein at least one of the patterns is found using a Hamming detector; determining, for a plurality of the portions, a minimum Dp value, Dpmin, that is a substantial minimum Dp value for the plurality of portions and a maximum Ds value, Dsmax, that is a substantial maximum Ds value for the plurality of portions; and determining the detection threshold based on the minimum Dp value, Dpmin, and the maximum Ds value, Dsmax. The detection threshold is optionally based on a configurable margin gain value.

Abstract translation: 为数据中的预定义模式提供了改进的阈值适配。 通过在数据的给定部分中声明模式之前确定最小欧几里得距离度量Dp，来适应欧几里得检测器检测数据中的模式（例如伺服地址标记）的检测阈值; 确定在所述给定部分中发现所述图案时的欧几里得距离度量Ds，其中使用汉明检测器找到所述图案中的至少一个; 对于多个部分，确定作为多个部分的实质最小Dp值的最小Dp值Dpmin，以及作为多个部分的实质最大Ds值的最大Ds值Dsmax; 并且基于最小Dp值Dpmin和最大Ds值Dsmax来确定检测阈值。 检测阈值可选地基于可配置的裕量增益值。

公开(公告)号：US20150228302A1

公开(公告)日：2015-08-13

申请号：US14197748

申请日：2014-03-05

Applicant: LSI Corporation

Inventor： Xuebin Wu ,  Shaohua Yang ,  Zhi Bin Li ,  Haitao Xia

IPC: G11B20/10

CPC classification number: G11B20/1024 ,  G11B20/10037

Abstract: A data storage system identifies analog-to-digital conversion samples with amplitude below a certain threshold. Remaining samples are grouped according to phase into one or more quadrants. A multi-coordinate with overlapping quadrants is used to further differentiate sample points. The system then computes an average phase for zero phase start estimation.

Abstract translation: 数据存储系统识别幅度低于某一阈值的模数转换样本。 剩余样品根据阶段分组成一个或多个象限。 使用具有重叠象限的多坐标来进一步区分采样点。 然后，该系统计算零相位开始估计的平均相位。

公开(公告)号：US20140223136A1

公开(公告)日：2014-08-07

申请号：US13761892

申请日：2013-02-07

Applicant: LSI CORPORATION

Inventor： Zhiwei Wu ,  Zhi Bin Li ,  Xiangdong Guo ,  Rui Shen ,  Razmik Karabed ,  Wu Chang

IPC: G06F12/10

CPC classification number: G06F12/1009

Abstract: The disclosure is directed to a system and method for accessing one or more values of a lookup table. In some embodiments, one or more read only memory devices are configured for storing a first plurality of values of the lookup table, and one or more combinational logic circuits are configured for accessing a second plurality of values of the lookup table. At least one of hardware area and timing pressures are mitigated through various storage and access schemes.

Abstract translation: 本公开针对用于访问查找表的一个或多个值的系统和方法。 在一些实施例中，一个或多个只读存储器设备被配置为存储查找表的第一多个值，并且一个或多个组合逻辑电路被配置用于访问查找表的第二多个值。 通过各种存储和访问方案来减轻硬件面积和时序压力中的至少一个。