公开(公告)号：US08681444B2

公开(公告)日：2014-03-25

申请号：US13491135

申请日：2012-06-07

申请人： Xun Zhang ,  Haitao Xia ,  Dahua Qin

发明人： Xun Zhang ,  Haitao Xia ,  Dahua Qin

IPC分类号： G11B5/09 ,  G11B5/596

CPC分类号： G11B5/59644 ,  G11B20/10268

摘要： The present inventions are related to systems and methods for transferring information to and from a storage medium, and more particularly to systems and methods for positioning a sensor in relation to a storage medium. For example, an apparatus for determining a sensor position is disclosed that includes a data stream processor operable to generate a number of data streams at different frequencies based on an input data stream, a number of servo preamble detectors each operable to process a different one of the data streams to detect a servo preamble, a selector operable to output one of the data streams in which the servo preamble was detected as a winning data stream, and a pattern detector operable to detect a pattern in the winning data stream.

摘要翻译： 本发明涉及用于将信息传送到存储介质和从存储介质传送信息的系统和方法，更具体地涉及用于相对于存储介质定位传感器的系统和方法。 例如，公开了一种用于确定传感器位置的装置，其包括可操作以基于输入数据流生成不同频率的多个数据流的数据流处理器，多个伺服前置码检测器，每个可操作以处理不同的 用于检测伺服前导码的数据流，可操作以输出其中检测到伺服前导码的数据流中的一个作为获胜数据流的选择器，以及用于检测获胜数据流中的模式的模式检测器。

公开(公告)号：US20130329312A1

公开(公告)日：2013-12-12

申请号：US13491135

申请日：2012-06-07

申请人： Xun Zhang ,  Haitao Xia ,  Dahua Qin

发明人： Xun Zhang ,  Haitao Xia ,  Dahua Qin

IPC分类号： G11B5/09

CPC分类号： G11B5/59644 ,  G11B20/10268

摘要： The present inventions are related to systems and methods for transferring information to and from a storage medium, and more particularly to systems and methods for positioning a sensor in relation to a storage medium. For example, an apparatus for determining a sensor position is disclosed that includes a data stream processor operable to generate a number of data streams at different frequencies based on an input data stream, a number of servo preamble detectors each operable to process a different one of the data streams to detect a servo preamble, a selector operable to output one of the data streams in which the servo preamble was detected as a winning data stream, and a pattern detector operable to detect a pattern in the winning data stream.

摘要翻译： 本发明涉及用于将信息传送到存储介质和从存储介质传送信息的系统和方法，更具体地涉及用于相对于存储介质定位传感器的系统和方法。 例如，公开了一种用于确定传感器位置的装置，其包括可操作以基于输入数据流生成不同频率的多个数据流的数据流处理器，多个伺服前置码检测器，每个可操作以处理不同的 用于检测伺服前导码的数据流，可操作以输出其中检测到伺服前导码的数据流中的一个作为获胜数据流的选择器，以及用于检测获胜数据流中的模式的模式检测器。

公开(公告)号：US08625216B2

公开(公告)日：2014-01-07

申请号：US13490913

申请日：2012-06-07

申请人： Xun Zhang ,  Dahua Qin ,  Haitao Xia

发明人： Xun Zhang ,  Dahua Qin ,  Haitao Xia

IPC分类号： G11B5/09 ,  G11B21/02 ,  G11B5/596

CPC分类号： G11B5/59655 ,  G11B5/59688

摘要： The present inventions are related to systems and methods for transferring information to and from a storage medium, and more particularly to systems and methods for positioning a sensor in relation to a storage medium. For example, an apparatus for determining a sensor position is disclosed that includes discrete Fourier transform calculators operable to process input data to yield a magnitude response of the input data at each of a number of candidate frequencies, a comparator operable to compare the magnitude responses to yield a winning candidate frequency, a servo controller operable to process at least one servo field in the input data to identify a position of a sensor based on the at least one servo field, and a servo frequency synthesizer operable to establish a frequency of operation in the servo controller based at least in part on the winning candidate frequency.

摘要翻译： 本发明涉及用于将信息传送到存储介质和从存储介质传送信息的系统和方法，更具体地涉及用于相对于存储介质定位传感器的系统和方法。 例如，公开了一种用于确定传感器位置的装置，其包括离散付里叶变换计算器，其可操作以处理输入数据以在多个候选频率的每一个处产生输入数据的幅度响应，比较器，可操作以将幅度响应与 产生获胜候选频率，伺服控制器，其可操作以处理所述输入数据中的至少一个伺服字段，以基于所述至少一个伺服字段识别传感器的位置;以及伺服频率合成器，其可操作以建立操作频率 所述伺服控制器至少部分地基于所述获胜候选频率。

公开(公告)号：US20130329313A1

公开(公告)日：2013-12-12

申请号：US13490913

申请日：2012-06-07

申请人： Xun Zhang ,  Dahua Qin ,  Haitao Xia

发明人： Xun Zhang ,  Dahua Qin ,  Haitao Xia

IPC分类号： G11B27/24 ,  G11B5/09

CPC分类号： G11B5/59655 ,  G11B5/59688

摘要： The present inventions are related to systems and methods for transferring information to and from a storage medium, and more particularly to systems and methods for positioning a sensor in relation to a storage medium. For example, an apparatus for determining a sensor position is disclosed that includes discrete Fourier transform calculators operable to process input data to yield a magnitude response of the input data at each of a number of candidate frequencies, a comparator operable to compare the magnitude responses to yield a winning candidate frequency, a servo controller operable to process at least one servo field in the input data to identify a position of a sensor based on the at least one servo field, and a servo frequency synthesizer operable to establish a frequency of operation in the servo controller based at least in part on the winning candidate frequency.

摘要翻译： 本发明涉及用于将信息传送到存储介质和从存储介质传送信息的系统和方法，更具体地涉及用于相对于存储介质定位传感器的系统和方法。 例如，公开了一种用于确定传感器位置的装置，其包括离散付里叶变换计算器，其可操作以处理输入数据以在多个候选频率的每一个处产生输入数据的幅度响应，比较器，可操作以将幅度响应与 产生获胜候选频率，伺服控制器，其可操作以处理所述输入数据中的至少一个伺服字段，以基于所述至少一个伺服字段识别传感器的位置;以及伺服频率合成器，其可操作以建立操作频率 所述伺服控制器至少部分地基于所述获胜候选频率。

公开(公告)号：US20120281305A1

公开(公告)日：2012-11-08

申请号：US13100021

申请日：2011-05-03

申请人： Haitao Xia ,  Xun Zhang ,  Shaohua Yang ,  Hongwei Song

发明人： Haitao Xia ,  Xun Zhang ,  Shaohua Yang ,  Hongwei Song

IPC分类号： G11B5/09

CPC分类号： G11B5/59644 ,  G11B5/59616

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 codeword detector circuit operable to apply a codeword based data detection algorithm to a data input corresponding to an encoded servo data region to yield a detected output, and a servo address mark processing circuit operable to identify a pre-defined pattern in 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，其包括码字检测器电路，其可操作以将基于码字的数据检测算法应用于与编码的伺服数据区域相对应的数据输入，以产生检测的输出，以及可操作的伺服地址标记处理电路 以识别检测到的输出中的预定义模式。

公开(公告)号：US20180048258A1

公开(公告)日：2018-02-15

申请号：US15121031

申请日：2016-03-07

申请人： Xun Zhang ,  Guoji Zhang

发明人： Xun Zhang ,  Guoji Zhang

IPC分类号： H02S10/30 ,  H01L31/054 ,  H02S40/22

CPC分类号： H02S10/30 ,  H01L31/0543 ,  H01L35/00 ,  H02S40/22 ,  Y02E10/40 ,  Y02E10/52

摘要： The present invention relates to a solar thermal energy-field electron emission power generation device, which is formed by a solar cooker and a heat-field electron emission power generation body. Based on the metal heat-field electron emission experiment, magnetic focusing and magnetic insulation are adopted to form the power generation device, which has characteristics of environmental protection, low cost and high efficiency. Therefore, the power generation device of the present invention can be widely applied to companies and individuals without common electric circuits, such as graze, sentry post, forest protection, cultivation of high seas, and marine power.

公开(公告)号：US09305581B2

公开(公告)日：2016-04-05

申请号：US12328024

申请日：2008-12-04

申请人： Viswanath Annampedu ,  Terence Karanink ,  Xun Zhang ,  Jeffrey P. Grundvig

发明人： Viswanath Annampedu ,  Terence Karanink ,  Xun Zhang ,  Jeffrey P. Grundvig

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： Various embodiments of the present invention provide systems and methods for low overhead disk wobble compensation. As an example, a method for performing synchronous wobble compensation processing is disclosed. The method includes providing a medium that includes a servo data region and a user data region. The servo data region includes a clock recovery pattern and a location pattern. A detectable pattern is written to the user data region a known number of bit periods from the location pattern. The detectable pattern is read back, and a fractional processing delay is calculated. Based at least on the fractional processing delay and a known number of bit periods from the location pattern to the end of the servo data region, a wobble compensation pattern is written an integral number of bit periods from the location pattern.

摘要翻译： 本发明的各种实施例提供了用于低架空磁盘摆动补偿的系统和方法。 作为示例，公开了一种用于执行同步摆动补偿处理的方法。 该方法包括提供包括伺服数据区和用户数据区的介质。 伺服数据区域包括时钟恢复模式和位置​​模式。 将可检测图案从位置图案写入用户数据区域已知数量的位周期。 读取可检测图案，并计算分数处理延迟。 至少基于分数处理延迟和从位置模式到伺服数据区域的结束的已知数量的位周期，摆动补偿模式从位置模式写入整数个位周期。

公开(公告)号：US08325432B2

公开(公告)日：2012-12-04

申请号：US12851455

申请日：2010-08-05

申请人： George Mathew ,  Xun Zhang ,  Hongwei Song

发明人： George Mathew ,  Xun Zhang ,  Hongwei Song

IPC分类号： G11B27/36 ,  G11B21/02

CPC分类号： G11B5/6029

摘要： Various embodiments of the present invention provide systems and methods for servo data based harmonics calculation. For example, a circuit for determining harmonics is disclosed that includes an analog to digital conversion circuit that provides a series of digital samples corresponding to a pattern within a servo data region of a storage medium, and a harmonic calculation circuit. The harmonic calculation circuit is operable to calculate a first harmonic value for the series of digital samples, calculate a second harmonic value for the series of digital samples, and calculate a ratio of the first harmonic value to the second harmonic value.

摘要翻译： 本发明的各种实施例提供了用于基于伺服数据的谐波计算的系统和方法。 例如，公开了一种用于确定谐波的电路，其包括提供与存储介质的伺服数据区域内的模式相对应的一系列数字样本的模数转换电路和谐波计算电路。 谐波计算电路可操作地计算一系列数字采样的一次谐波值，计算一系列数字采样的二次谐波值，并计算一次谐波值与二次谐波值的比值。

公开(公告)号：US08199422B2

公开(公告)日：2012-06-12

申请号：US12847661

申请日：2010-07-30

申请人： Viswanath Annampedu ,  Xun Zhang

发明人： Viswanath Annampedu ,  Xun Zhang

IPC分类号： G11B20/10

CPC分类号： G11B20/10305 ,  G11B20/10009

摘要： Methods and apparatus are provided for gain estimation using servo data with improved bias correction. The gain is estimated using a preamble in a servo sector by obtaining a first gain estimate using a first gain estimation algorithm (such as a Zero Gain Start Algorithm) and a first portion of the preamble; storing the first portion of the preamble in a memory buffer; obtaining a second gain estimate using a second gain estimation algorithm (such as a Zero Forcing algorithm) and the first portion of the preamble; and processing Servo Address Mark (SAM) and Gray data in the servo sector using the first gain estimate substantially simultaneous to the step of obtaining the second gain estimate. A gain error can be obtained by calculating a difference between the first gain estimate and the second gain estimate. The gain error can be used in burst processing of the servo data.

摘要翻译： 提供了使用改进的偏差校正的伺服数据进行增益估计的方法和装置。 通过使用第一增益估计算法（例如零增益启动算法）和前同步码的第一部分获得第一增益估计，使用伺服扇区中的前导码估计增益; 将前导码的第一部分存储在存储器缓冲器中; 使用第二增益估计算法（例如零强制算法）和前导码的第一部分获得第二增益估计; 以及基本上与获得第二增益估计的步骤同时使用第一增益估计来处理伺服扇区中的伺服地址标记（SAM）和灰数据。 可以通过计算第一增益估计和第二增益估计之间的差来获得增益误差。 增益误差可用于伺服数据的突发处理。

公开(公告)号：US20110271047A1

公开(公告)日：2011-11-03

申请号：US12857657

申请日：2010-08-17

申请人： Xun Zhang ,  Yu Huang ,  Ye-Chun Zhang

发明人： Xun Zhang ,  Yu Huang ,  Ye-Chun Zhang

IPC分类号： G06F12/02 ,  G06F12/00

CPC分类号： G06F9/4406 ,  G06F3/0607 ,  G06F3/0632 ,  G06F3/0635 ,  G06F3/0676 ,  G06F2213/0038

摘要： A storage device of a computer system including a first storage portion having a first capacity and a second storage portion having a second capacity is disclosed. A virtual storage unit is installed in an operating system of the computer system, and the operating system directly accesses data in the first capacity of the storage device. The operating system accesses the data in the second capacity via the virtual storage unit mapped to the second capacity of the storage device. The invention may be adapted to the storage device which uses a MBR partition table scheme and has a capacity larger than 2.2 TB which is the maximum supportive capacity of the MBR partition table scheme.

摘要翻译： 公开了一种包括具有第一容量的第一存储部分和具有第二容量的第二存储部分的计算机系统的存储装置。 虚拟存储单元安装在计算机系统的操作系统中，操作系统直接访问存储设备的第一容量中的数据。 操作系统通过映射到存储设备的第二容量的虚拟存储单元访问第二容量中的数据。 本发明可以适用于使用MBR分区表方案并且具有大于2.2TB的容量的存储装置，其是MBR分区表方案的最大支持容量。