公开(公告)号：US20070280071A1

公开(公告)日：2007-12-06

申请号：US11755222

申请日：2007-05-30

申请人： Yuh Cheng ,  Bing-Yu Hsieh

发明人： Yuh Cheng ,  Bing-Yu Hsieh

IPC分类号： G11B20/10

CPC分类号： G11B27/24 ,  G11B7/0053 ,  G11B19/125 ,  G11B20/10009 ,  G11B20/10027 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/10222 ,  G11B20/1217 ,  G11B2020/1238 ,  G11B2020/1239 ,  G11B2020/1268 ,  G11B2020/1269 ,  G11B2020/1274 ,  G11B2020/1287 ,  G11B2220/2562 ,  G11B2220/2579

摘要： An apparatus for detecting the wobble carrier frequency of an optical disk is disclosed. The apparatus comprises an offset canceller, a binary conversion module, an adjustable band pass filter, and a frequency detection module. The offset canceller cancels the direct current offset of a first wobble signal to obtain a second wobble signal. The binary conversion module converts the second wobble signal to a binary data stream. The adjustable band pass filter passes only an adjustable frequency range of the binary data stream to generate a filtered signal, wherein the center frequency of the adjustable frequency range is sequentially adjusted. The frequency detection module then determines maximum amplitude of the filtered signal, and determines the center frequency of the adjustable frequency range according to which the filtered signal with the maximum amplitude is generated, wherein the wobble carrier frequency is the center frequency corresponding to the maximum amplitude.

摘要翻译： 公开了一种用于检测光盘的摆动载波频率的装置。 该装置包括偏移消除器，二进制转换模块，可调带通滤波器和频率检测模块。 偏移消除器取消第一摆动信号的直流偏移以获得第二摆动信号。 二进制转换模块将第二摆动信号转换成二进制数据流。 可调带通滤波器仅通过二进制数据流的可调频率范围，以产生滤波信号，其中可调频率范围的中心频率被依次调整。 频率检测模块然后确定滤波信号的最大振幅，并确定可调频率范围的中心频率，根据该频率范围产生具有最大幅度的滤波信号，其中摆动载波频率是对应于最大振幅的中心频率 。

公开(公告)号：US20070280066A1

公开(公告)日：2007-12-06

申请号：US11758082

申请日：2007-06-05

申请人： Chia-Wei Liao ,  Chih-Ching Chen ,  Yuh Cheng ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Chun-Yu Lin ,  Shu-Hung Chou

发明人： Chia-Wei Liao ,  Chih-Ching Chen ,  Yuh Cheng ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Chun-Yu Lin ,  Shu-Hung Chou

IPC分类号： G11B7/00

CPC分类号： G11B7/0941 ,  G11B7/0903

摘要： The invention provides an apparatus for controlling servo signal gains of an optical disc drive. The apparatus adjusts the gains of a plurality of servo signals controlling a servo system of the optical disc drive according to a closed-loop mode or a state-reloading mode whenever the optical disk drive encounters an operating state transition. In closed-loop mode, at least one AGC loop of the apparatus compensates the gains of the servo signals with a selectable bandwidth during a specific period after the operating state transition to accelerate the convergence of the servo signals. In state-reloading mode, at least one AGC loop of the apparatus reloads the previously saved convergence values or pre-determined values as the initial values according to the current operating state immediately after the operating state transition to accelerate the convergence of the servo signals.

摘要翻译： 本发明提供一种用于控制光盘驱动器的伺服信号增益的装置。 只要光盘驱动器遇到操作状态转换，该装置根据闭环模式或状态重新加载模式来调整控制光盘驱动器的伺服系统的多个伺服信号的增益。 在闭环模式中，该装置的至少一个AGC环路在操作状态转换之后的特定周期期间以可选择的带宽补偿伺服信号的增益，以加速伺服信号的收敛。 在状态重新加载模式中，装置的至少一个AGC回路根据当前运行状态在运行状态转换之后重新加载先前存储的收敛值或预定值作为初始值，以加速伺服信号的收敛。

公开(公告)号：US20060280064A1

公开(公告)日：2006-12-14

申请号：US11466459

申请日：2006-08-23

申请人： Yuh Cheng

发明人： Yuh Cheng

IPC分类号： G11B7/00

CPC分类号： G11B7/0906 ,  G11B7/0943

摘要： A method for deriving a tracking error signal based on a first analog detection signal and a second analog detection signal. The method includes summing the first analog detection signal and the second analog detection signal to generate an analog sum signal. An analog delay device is utilized to delay the analog sum signal to be a delay signal. The delay signal is digitalized into a digital delay signal. The first analog detection signal and the second analog detection signal are respectively transformed into a first digital detection signal and a second digital detect signal. The tracking error signal is then generated utilizing a comparing operation among the digital delay signal, the first digital detect signal, and the first digital detect signal.

公开(公告)号：US20060215524A1

公开(公告)日：2006-09-28

申请号：US11306115

申请日：2005-12-16

申请人： Pi-Hai Liu ,  Yuh Cheng ,  Chih-Ching Yu ,  Chih-Hsiung Chu

发明人： Pi-Hai Liu ,  Yuh Cheng ,  Chih-Ching Yu ,  Chih-Hsiung Chu

IPC分类号： G11B7/0045

CPC分类号： G11B20/14 ,  G11B7/00456 ,  G11B7/1267 ,  G11B20/10 ,  G11B20/10194 ,  G11B20/10481 ,  G11B20/1426

摘要： A system, for tuning a plurality of write strategy parameters of an optical storage device, includes: a run-length limited (RLL) meter for detecting a plurality of lengths, each length corresponding to a pit or a land on an optical storage medium accessed by the optical storage device; and a calculation module coupled to the RLL meter for performing calculations according to the lengths to generate a plurality of calculation results; wherein the write strategy parameters are tuned according to the calculation results.

摘要翻译： 一种用于调整光学存储设备的多个写入策略参数的系统，包括：用于检测多个长度的游程长度限制（RLL）计量器，每个长度对应于被访问的光学存储介质上的凹坑或岸台 由光存储装置; 以及耦合到所述RLL计量器的计算模块，用于根据所述长度执行计算以产生多个计算结果; 其中根据计算结果对写入策略参数进行调整。

公开(公告)号：US07911891B2

公开(公告)日：2011-03-22

申请号：US11758082

申请日：2007-06-05

申请人： Chia-Wei Liao ,  Chih-Ching Chen ,  Yuh Cheng ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Chun-Yu Lin ,  Shu-Hung Chou

发明人： Chia-Wei Liao ,  Chih-Ching Chen ,  Yuh Cheng ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Chun-Yu Lin ,  Shu-Hung Chou

IPC分类号： G11B7/00

CPC分类号： G11B7/0941 ,  G11B7/0903

摘要： The invention provides an apparatus for controlling servo signal gains of an optical disc drive. The apparatus adjusts the gains of a plurality of servo signals controlling a servo system of the optical disc drive according to a closed-loop mode or a state-reloading mode whenever the optical disk drive encounters an operating state transition. In closed-loop mode, at least one AGC loop of the apparatus compensates the gains of the servo signals with a selectable bandwidth during a specific period after the operating state transition to accelerate the convergence of the servo signals. In state-reloading mode, at least one AGC loop of the apparatus reloads the previously saved convergence values or pre-determined values as the initial values according to the current operating state immediately after the operating state transition to accelerate the convergence of the servo signals.

摘要翻译： 本发明提供一种用于控制光盘驱动器的伺服信号增益的装置。 只要光盘驱动器遇到操作状态转换，该装置根据闭环模式或状态重新加载模式来调整控制光盘驱动器的伺服系统的多个伺服信号的增益。 在闭环模式中，该装置的至少一个AGC环路在操作状态转换之后的特定周期期间以可选择的带宽补偿伺服信号的增益，以加速伺服信号的收敛。 在状态重新加载模式中，装置的至少一个AGC回路根据当前运行状态在运行状态转换之后重新加载先前存储的收敛值或预定值作为初始值，以加速伺服信号的收敛。

公开(公告)号：US07693012B2

公开(公告)日：2010-04-06

申请号：US11755237

申请日：2007-05-30

申请人： Bing-Yu Hsieh ,  Yuh Cheng ,  Shu-Hung Chou ,  Jung-Feng Ho

发明人： Bing-Yu Hsieh ,  Yuh Cheng ,  Shu-Hung Chou ,  Jung-Feng Ho

IPC分类号： G11B7/00

CPC分类号： G11B20/1419 ,  G11B27/24 ,  G11B2020/1269

摘要： The invention provides an apparatus for demodulating an Address In Pre-groove (ADIP) symbol. The ADIP symbol is carried by a wobble signal of an optical disk and comprises a series of ADIP bits permuted according to one of a plurality of permutation patterns to make up the ADIP symbol. A wobble extraction module extracts the wobble signal from the optical disk. A reference wobble generator generates a reference wobble with the same frequency and phase as a fundamental frequency and phase of a positive wobble cycle of the wobble signal. A waveform difference measurement module then measures a difference between the wobble signal and the reference wobble to obtain a series of difference measurement values respectively corresponding to the ADIP bits. A pattern matching module then compares probabilities of the permutation of the ADIP bits agreeing with each of the permutation patterns according to the difference measurement values to determine the ADIP symbol.

摘要翻译： 本发明提供了一种用于解调预编码地址（ADIP）符号的装置。 ADIP符号由光盘的摆动信号承载，并且包括根据多个置换模式中的一个置换的一系列ADIP位，以构成ADIP符号。 摆动提取模块从光盘中提取摆动信号。 参考摆动发生器产生与摆动信号的正摆动周期的基频和相位相同的频率和相位的参考摆动。 波形差测量模块然后测量摆动信号和参考摆动之间的差异，以获得分别对应于ADIP位的一系列差分测量值。 模式匹配模块然后根据差值测量值来比较与每个置换模式一致的ADIP位置的概率，以确定ADIP符号。

公开(公告)号：US20090185462A1

公开(公告)日：2009-07-23

申请号：US12355298

申请日：2009-01-16

申请人： Gwo-Huei Wu ,  Chih-Yuan Chen ,  Yuh Cheng

发明人： Gwo-Huei Wu ,  Chih-Yuan Chen ,  Yuh Cheng

IPC分类号： G11B7/00

CPC分类号： G11B7/08511 ,  G11B7/13925 ,  G11B2007/0013

摘要： A focus controller and a focus control method are provided. The method allows the optical access apparatus focus from a current data layer onto a target layer. Each of the current layer and the target layer corresponds to a Spherical Aberration Compensation (SAC) value and a focus error related parameter. The method adjusts the SAC value in use to a temporary SAC value, adjusts the focus error related parameter in use to a temporary focus error related parameter, focuses on the target layer, adjusts the focus error related parameter in use to the focus error related parameter corresponding to the target layer, and adjusts the SAC value in use to the focus error related parameter corresponding to the target layer.

摘要翻译： 提供了聚焦控制器和聚焦控制方法。 该方法允许光接入设备从当前数据层聚焦到目标层上。 当前层和目标层中的每一个对应于球面像差补偿（SAC）值和聚焦误差相关参数。 该方法将使用中的SAC值调整为临时SAC值，将使用中的聚焦误差相关参数调整为临时聚焦误差相关参数，将焦点放在目标层上，将聚焦误差相关参数调整到聚焦误差相关参数 对应于目标层，并将使用的SAC值调整为与目标层对应的聚焦误差相关参数。

公开(公告)号：US07376063B2

公开(公告)日：2008-05-20

申请号：US11425153

申请日：2006-06-20

申请人： Yuh Cheng ,  Gwo-Huei Wu

发明人： Yuh Cheng ,  Gwo-Huei Wu

IPC分类号： G11B7/004

CPC分类号： G11B7/0956 ,  G11B7/094 ,  G11B7/0943

摘要： A control circuit of an optical storage device includes a loop phase calculation unit for calculating a closed loop phase of a servo system according to at least one error signal of the servo system and a system control unit coupled to the loop phase calculation unit for generating an optimized control parameter according to the closed loop phase to perform compensation control, wherein the servo system comprises a tracking servo control system or a focusing servo control system, the compensation control is radial tilt control or focus balance adjustment, and the optimized control parameter is at least one optimized control parameter determined according to a plurality of closed loop phases calculated by the loop phase calculation unit.

摘要翻译： 光存储装置的控制电路包括：循环相位计算单元，用于根据所述伺服系统的至少一个误差信号计算伺服系统的闭环相位;耦合到所述环路相位计算单元的系统控制单元，用于产生 根据闭环相位优化控制参数进行补偿控制，其中伺服系统包括跟踪伺服控制系统或聚焦伺服控制系统，补偿控制为径向倾斜控制或聚焦平衡调整，优化控制参数为 根据由循环相位计算单元计算出的多个闭环相位来确定最少一个优化控制参数。

公开(公告)号：US20070280070A1

公开(公告)日：2007-12-06

申请号：US11755202

申请日：2007-05-30

申请人： Yuh Cheng ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Shu-Hung Chou ,  Bing-Yu Hsieh

发明人： Yuh Cheng ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Shu-Hung Chou ,  Bing-Yu Hsieh

IPC分类号： G11B20/10

CPC分类号： G11B20/1217 ,  G11B7/0053 ,  G11B20/10009 ,  G11B20/10027 ,  G11B20/10037 ,  G11B27/24 ,  G11B2020/1238 ,  G11B2020/1239 ,  G11B2020/1268 ,  G11B2020/1269 ,  G11B2020/1274 ,  G11B2020/1287 ,  G11B2220/2562 ,  G11B2220/2579

摘要： The invention provides a wobble detection circuit. An exemplary embodiment of the wobble detection circuit comprises an automatic gain control module, an analog to digital converter, a digital band pass filter, and a digital band pass filter. The automatic gain control module amplifies a first input signal and a second input signal detected by a pickup head to the same magnitude to obtain a first amplified signal and a second amplified signal. The adder then subtracts the second amplified signal from the first amplified signal to obtain an analog wobble signal. The analog to digital converter then converts the analog wobble signal to a first digital wobble signal. Finally, the digital band pass filter accepts frequency components of the first digital wobble signal within a pass band and rejects frequency components of the first digital wobble signal outside the pass band to obtain a second digital wobble signal.

摘要翻译： 本发明提供一种摆动检测电路。 摆动检测电路的示例性实施例包括自动增益控制模块，模数转换器，数字带通滤波器和数字带通滤波器。 自动增益控制模块将由拾取头检测到的第一输入信号和第二输入信号放大到相同的大小以获得第一放大信号和第二放大信号。 然后，加法器从第一放大信号中减去第二放大信号以获得模拟摆动信号。 然后，模数转换器将模拟摆动信号转换为第一数字摆动信号。 最后，数字带通滤波器接收通带内的第一数字摆动信号的频率分量，并且抑制通带外的第一数字摆动信号的频率分量，以获得第二数字摆动信号。

公开(公告)号：US07254099B2

公开(公告)日：2007-08-07

申请号：US11466458

申请日：2006-08-23

申请人： Yuh Cheng

发明人： Yuh Cheng

IPC分类号： G11B7/095

CPC分类号： G11B7/0906 ,  G11B7/0943

摘要： A method for deriving a tracking error signal based on a first analog detection signal and a second analog detection signal. The method includes summing the first analog detection signal and the second analog detection signal to generate an analog sum signal. An analog delay device is utilized to delay the analog sum signal to be a delay signal. The delay signal is digitalized into a digital delay signal. The first analog detection signal and the second analog detection signal are respectively transformed into a first digital detection signal and a second digital detect signal. The tracking error signal is then generated utilizing a comparing operation among the digital delay signal, the first digital detect signal, and the first digital detect signal.

摘要翻译： 一种用于基于第一模拟检测信号和第二模拟检测信号导出跟踪误差信号的方法。 该方法包括对第一模拟检测信号和第二模拟检测信号求和以产生模拟和信号。 使用模拟延迟装置将模拟和信号延迟为延迟信号。 延迟信号被数字化为数字延迟信号。 第一模拟检测信号和第二模拟检测信号分别变换为第一数字检测信号和第二数字检测信号。 然后利用数字延迟信号，第一数字检测信号和第一数字检测信号之间的比较操作产生跟踪误差信号。