公开(公告)号：US09803982B2

公开(公告)日：2017-10-31

申请号：US14426604

申请日：2014-04-28

申请人： INTEL CORPORATION ,  Ke Han ,  Ke Ding ,  Jingyi Ma ,  Yuhuan Huang

发明人： Ke Han ,  Ke Ding ,  Jingyi Ma ,  Yuhuan Huang

IPC分类号： G01C21/16

CPC分类号： G01C21/16

摘要： Technologies for determining a user's location by a mobile computing device include detecting, based on sensed inertial characteristics of the mobile computing device, that a user of the mobile computing device has taken a physical step in a direction. The mobile computing device determines a directional heading of the mobile computing device in the direction and a variation of an orientation of the mobile computing device relative to a previous orientation of the mobile computing device at a previous physical step of the user based on the sensed inertial characteristics. The mobile computing device further applies a Kalman filter to determine a heading of the user based on the determined directional heading of the mobile computing device and the variation of the orientation and determines an estimated location of the user based on the user's determined heading, an estimated step length of the user, and a previous location of the user at the previous physical step.

公开(公告)号：US09469893B2

公开(公告)日：2016-10-18

申请号：US13903501

申请日：2013-05-28

申请人： Ke Han ,  Pingli Mao ,  Yan Xin

发明人： Ke Han ,  Pingli Mao ,  Yan Xin

IPC分类号： C22F1/10

CPC分类号： C22F1/10 ,  C22C19/057

摘要： This document describes a process/strategy for age hardening nickel based alloys to create desirable properties with reduced energy expenditure. The inventive process introduces isolated atom nucleation sites to accelerate the nucleation rate by approximately 36 times, thereby permitting age hardening to occur in significantly less time and with significantly less energy expenditure.

摘要翻译： 本文件描述了一种用于时效硬化镍基合金以降低能量消耗产生理想特性的方法/策略。 本发明的方法引入了分离的原子成核位点以将成核速率加速约36倍，从而允许在显着更少的时间和显着更少的能量消耗下发生时效硬化。

公开(公告)号：US07881164B1

公开(公告)日：2011-02-01

申请号：US11906655

申请日：2007-10-02

申请人： Ke Han ,  Zining Wu

发明人： Ke Han ,  Zining Wu

IPC分类号： G11B7/00 ,  G11B5/09 ,  G11B20/10 ,  G11B5/035

CPC分类号： G11B5/59616 ,  G11B5/09 ,  G11B20/10009 ,  G11B20/10222 ,  G11B2020/1232 ,  G11B2020/1287 ,  G11B2220/2516

摘要： Systems and methods for detecting a disk sync mark are provided. The systems and methods for detecting the disk sync mark rely on a detecting the disk sync mark on at least one timing interval. A window of data read bits from a particular disk sector are examined to determine whether they match the disk sync mark. The disk sync mark may be differentiated from expected versions of the disk sync mark using a calculated set of thresholds.

摘要翻译： 提供了用于检测磁盘同步标记的系统和方法。 用于检测盘同步标记的系统和方法依赖于在至少一个定时间隔上检测盘同步标记。 检查来自特定磁盘扇区的数据读取位的窗口，以确定它们是否与磁盘同步标记相匹配。 磁盘同步标记可以使用计算的一组阈值与磁盘同步标记的预期版本不同。

公开(公告)号：US20100269961A1

公开(公告)日：2010-10-28

申请号：US12799687

申请日：2010-04-29

申请人： Ke Han ,  Robert Walsh ,  David Embury

发明人： Ke Han ,  Robert Walsh ,  David Embury

IPC分类号： C21D6/04

CPC分类号： C21D1/613 ,  B21C9/00 ,  B21C23/001 ,  B21C23/002 ,  C21D6/04 ,  C21D7/02 ,  C21D7/10 ,  C21D8/06 ,  C21D9/5732 ,  C22F1/00

摘要： A process for increasing the strength of pure copper and other fcc matrix alloys while maintaining ductility. The method is particularly applicable to face-centered-cubic materials that undergo dynamic recovery when strain-hardened at room temperature. The material is first subjected to equal channel angular pressing to create an ultra fine grain structure (“UFG”). The UFG sample is then subjected to cryogenic drawing and finally to subcryogenic deformation.

摘要翻译： 提高纯铜和其他fcc基质合金的强度同时保持延展性的方法。 该方法特别适用于在室温下应变硬化时经历动态回复的面心立方体材​​料。 该材料首先进行等通道角挤压以产生超细晶粒结构（“UFG”）。 然后将UFG样品进行低温拉伸，最后进行亚原子变形。

公开(公告)号：US07715134B1

公开(公告)日：2010-05-11

申请号：US12330789

申请日：2008-12-09

申请人： Pantas Sutardja ,  Ke Han

发明人： Pantas Sutardja ,  Ke Han

IPC分类号： G11B5/02

CPC分类号： G11B5/5526 ,  G11B5/596 ,  G11B5/59605

摘要： A servo compensation processor includes an input that receives samples of a waveform generated from a servo track, the servo track including servo data and synchronization symbols. A peak estimator estimates a first location of a peak amplitude of the waveform. A phase determiner determines a sampling phase based on a first number of the samples between one of the synchronization symbols and a first predetermined one of the samples. A compensator determines a compensation amount based on a compensation curve and the sampling phase. A location estimator determines a second location of the peak amplitude based on the first location and the compensation amount. A location determiner determines a center location of the servo track based on the second location.

摘要翻译： 伺服补偿处理器包括接收从伺服轨迹产生的波形的采样的输入，所述伺服轨迹包括伺服数据和同步符号。 峰值估计器估计波形的峰值幅度的第一位置。 相位确定器基于同步符号之一和样本中的第一预定样本之间的第一数目的样本来确定采样相位。 补偿器基于补偿曲线和采样阶段来确定补偿量。 位置估计器基于第一位置和补偿量来确定峰值幅度的第二位置。 位置确定器基于第二位置确定伺服轨道的中心位置。

公开(公告)号：US07203017B1

公开(公告)日：2007-04-10

申请号：US10794733

申请日：2004-03-05

申请人： Pantas Sutardja ,  Ke Han ,  Zining Wu

发明人： Pantas Sutardja ,  Ke Han ,  Zining Wu

IPC分类号： G11B5/09

CPC分类号： G11B20/1403 ,  G11B20/10009 ,  G11B20/10222 ,  G11B20/10527 ,  G11B2020/1062

摘要： A storage channel, e.g., for a disk drive system, may asynchronously sample and buffer an entire sector, and then process the buffered sector to recover timing information. The storage channel may operate in an open-loop and utilize an exhaustive search to determine timing parameters. Alternatively, the storage channel may operative in a closed-loop, processing the sector once, and feeding back information obtained during decoding to the timing loop.

摘要翻译： 诸如用于磁盘驱动器系统的存储通道可以异步地对整个扇区进行采样和缓冲，然后处理缓冲的扇区以恢复定时信息。 存储通道可以在开环中操作并利用穷举搜索来确定时序参数。 或者，存储通道可以在闭环中操作，一次处理该扇区，并将解码期间获得的信息反馈到定时循环。

公开(公告)号：US07079342B1

公开(公告)日：2006-07-18

申请号：US10974604

申请日：2004-10-27

申请人： Ke Han ,  Zining Wu

发明人： Ke Han ,  Zining Wu

IPC分类号： G11B5/09

CPC分类号： G11B20/10009 ,  G11B20/10046 ,  G11B2005/0016 ,  G11B2220/2516

摘要： Asymmetry correction for an MR read head in a magnetic recording channel employs an exponential function to correct MR read head asymmetry. The asymmetry correction function has the form ƒASC(y)=y−q(eay+e−ay−2), wherein a is a parameter that can be adjusted for optimal channel performance, and q is an asymmetry correction coefficient.

摘要翻译： 磁记录通道中的MR读取头的不对称校正采用指数函数来校正MR读取头不对称。 不对称校正函数具有形式为（ASC）（y）= yq（e-Ay）+ e - - - （2）），其中a为 参数可以调整以获得最佳的通道性能，q是非对称校正系数。

公开(公告)号：US07002761B1

公开(公告)日：2006-02-21

申请号：US10644166

申请日：2003-08-20

申请人： Pantas Sutardja ,  Ke Han

发明人： Pantas Sutardja ,  Ke Han

IPC分类号： G11B20/06

CPC分类号： G11B5/5526 ,  G11B5/596 ,  G11B5/59605

摘要： A hard disk drive, and method and computer program therefor, comprising a hard disk having one or more spiral servo tracks written thereon, wherein each of the servo tracks comprises servo data comprising one or more synchronization symbols; a head adapted to produce a waveform as the head moves across the servo track; a sampler adapted to obtain a plurality of samples of the waveform, wherein the plurality of samples of the waveform comprises one of the synchronization symbols; and a processor adapted to determine an estimated location of a peak amplitude of the waveform with respect to the plurality of samples of the waveform, determine a sampling phase defined by a number of the samples between one of the synchronization symbols and a predetermined one of the samples of the waveform, determine a compensation amount based on a compensation curve and the sampling phase, determine a refined estimated location of the peak amplitude of the waveform based on the estimated location of the peak amplitude of the waveform and the compensation amount, and determine the location of the center of the servo track based on the refined estimated location of the peak amplitude of the waveform.

摘要翻译： 一种硬盘驱动器及其方法和计算机程序，包括其上写有一个或多个螺旋伺服磁道的硬盘，其中每个伺服磁道包括包括一个或多个同步符号的伺服数据; 当头部移动穿过伺服轨道时适于产生波形的头部; 适于获得所述波形的多个采样的采样器，其中所述波形的所述多个采样包括所述同步符号之一; 以及处理器，适于确定相对于所述波形的所述多个样本的所述波形的峰值幅度的估计位置，确定由所述同步符号中的一个与所述多个样本之间的预定的一个 基于补偿曲线和采样相位确定补偿量，基于波形的峰值幅度和补偿量的估计位置确定波形的峰值幅度的精确估计位置，并确定波形样本 基于波形峰值幅度的精确估计位置的伺服磁道中心的位置。

公开(公告)号：US20140352853A1

公开(公告)日：2014-12-04

申请号：US13903501

申请日：2013-05-28

申请人： Ke Han ,  Pingli Mao ,  Yan Xin

发明人： Ke Han ,  Pingli Mao ,  Yan Xin

IPC分类号： C22F1/10

CPC分类号： C22F1/10 ,  C22C19/057

摘要： This document describes a process/strategy for age hardening nickel based alloys to create desirable properties with reduced energy expenditure. The inventive process introduces isolated atom nucleation sites to accelerate the nucleation rate by approximately 36 times, thereby permitting age hardening to occur in significantly less time and with significantly less energy expenditure.

摘要翻译： 本文件描述了一种用于时效硬化镍基合金以降低能量消耗产生理想特性的方法/策略。 本发明的方法引入了分离的原子成核位点以将成核速率加速约36倍，从而允许在显着更少的时间和显着更少的能量消耗下发生时效硬化。

公开(公告)号：US08477447B1

公开(公告)日：2013-07-02

申请号：US13357406

申请日：2012-01-24

申请人： Ke Han

发明人： Ke Han

IPC分类号： G11B5/035

CPC分类号： G11B20/10212 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10175 ,  G11B20/10194 ,  G11B20/10296 ,  G11B20/10481 ,  G11B2005/0016 ,  G11B2220/2516

摘要： Systems and techniques relating to interpreting signals on a channel having an asymmetrical signal amplitude response are described. A described system includes an asymmetry correction circuit configured to receive an analog signal and to compensate for asymmetry in the received analog signal, a signal equalizer configured to receive an input signal responsive to an output of the asymmetry correction circuit and to generate an equalized signal, a discrete time sequence detector operable to examine the equalized signal, and a control circuit operable to provide a coefficient adjustment to the asymmetry correction circuit to affect asymmetry compensation based on an estimate of nonlinearity derived from the equalized signal and multiple reconstructed ideal channel output values. The reconstructed ideal channel output values can be derived from an output of the discrete time sequence detector and correspond to at least two different discrete times.

摘要翻译： 描述了在具有不对称信号幅度响应的信道上解释信号的系统和技术。 所描述的系统包括不对称校正电路，其被配置为接收模拟信号并补偿所接收的模拟信号的不对称性;信号均衡器，被配置为响应于不对称校正电路的输出接收输入信号并产生均衡的信号， 离散时间序列检测器，其可操作以检查均衡信号;以及控制电路，可操作以基于从均衡信号和多个重建理想信道输出值导出的非线性估计，向不对称校正电路提供系数调整以影响不对称补偿。 可以从离散时间序列检测器的输出导出重构的理想信道输出值，并对应于至少两个不同的离散时间。