公开(公告)号：US07911891B2

公开(公告)日：2011-03-22

申请号：US11758082

申请日：2007-06-05

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

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

IPC: G11B7/00

CPC classification number: G11B7/0941 ,  G11B7/0903

Abstract: 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.

Abstract translation: 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：US07724090B2

公开(公告)日：2010-05-25

申请号：US11757421

申请日：2007-06-04

Applicant: Yu-Hsuan Lin ,  Yuh Cheng

Inventor： Yu-Hsuan Lin ,  Yuh Cheng

IPC: H03G3/30

CPC classification number: H03G3/3036 ,  G11B20/10009 ,  G11B20/10027 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/10314 ,  G11B27/22

Abstract: An electrical device and a loop control method are provided. A data signal is obtained from a front end. A variable gain amplifier amplifies the data signal based on a gain value. An analog to digital converter samples the amplified data signal output therefrom to generate a digital data signal. A peak bottom detector detects a peak level and a bottom level of the digital data signal. A threshold controller compares the peak and bottom levels with a threshold value, and generates a first control signal accordingly. An auto gain controller updates the gain value based on the peak and bottom levels with a first step size. The first step size is determined by the first control signal.

Abstract translation: 提供电气装置和环路控制方法。 从前端获得数据信号。 可变增益放大器基于增益值放大数据信号。 模数转换器对从其输出的放大数据信号进行采样以产生数字数据信号。 峰值检测器检测数字数据信号的峰值电平和底部电平。 阈值控制器将峰值和底部电平与阈值进行比较，并相应地产生第一控制信号。 自动增益控制器根据具有第一步长的峰值和最低电平来更新增益值。 第一步尺寸由第一控制信号确定。

公开(公告)号：US07693012B2

公开(公告)日：2010-04-06

申请号：US11755237

申请日：2007-05-30

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

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

IPC: G11B7/00

CPC classification number: G11B20/1419 ,  G11B27/24 ,  G11B2020/1269

Abstract: 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.

Abstract translation: 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：US07684291B2

公开(公告)日：2010-03-23

申请号：US11559416

申请日：2006-11-14

Applicant: Yu-Hsuan Lin ,  Yuh Cheng ,  Chih-Ching Chen

Inventor： Yu-Hsuan Lin ,  Yuh Cheng ,  Chih-Ching Chen

IPC: G11B7/00

CPC classification number: G11B20/10009 ,  G11B20/10027 ,  G11B20/10037 ,  G11B20/10046 ,  G11B27/22 ,  G11B2220/2537 ,  H03G3/3084

Abstract: An optical storage device and a blank detection method thereof are disclosed. An RF signal is obtained from an optical disc. A various gain amplifier amplifies the RF signal based on a control signal. An analog to digital converter samples the amplified RF signal to obtain a data signal. An auto gain controller updates the control signal based on amplitude of the data signal. A blank detector detects blankness of the data signal based on a threshold. The threshold is provided by a threshold generator based on the control signal. If the amplitude of the data signal does not exceed the threshold, the blank detector sends a hold signal to suspend update of the control signal.

Abstract translation: 公开了一种光存储装置及其空白检测方法。 从光盘获得RF信号。 各种增益放大器基于控制信号来放大RF信号。 模数转换器对放大的RF信号进行采样以获得数据信号。 自动增益控制器根据数据信号的幅度更新控制信号。 空白检测器基于阈值检测数据信号的空白。 阈值由基于控制信号的阈值发生器提供。 如果数据信号的幅度不超过阈值，则空白检测器发送保持信号以暂停更新控制信号。

公开(公告)号：US20090185462A1

公开(公告)日：2009-07-23

申请号：US12355298

申请日：2009-01-16

Applicant: Gwo-Huei Wu ,  Chih-Yuan Chen ,  Yuh Cheng

Inventor： Gwo-Huei Wu ,  Chih-Yuan Chen ,  Yuh Cheng

IPC: G11B7/00

CPC classification number: G11B7/08511 ,  G11B7/13925 ,  G11B2007/0013

Abstract: 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.

Abstract translation: 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

Applicant: Yuh Cheng ,  Gwo-Huei Wu

Inventor： Yuh Cheng ,  Gwo-Huei Wu

IPC: G11B7/004

CPC classification number: G11B7/0956 ,  G11B7/094 ,  G11B7/0943

Abstract: 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.

Abstract translation: 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：US20070291622A1

公开(公告)日：2007-12-20

申请号：US11758094

申请日：2007-06-05

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

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

IPC: G11B7/00

CPC classification number: G11B7/0943 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/1263

Abstract: A high pass filtering device for an optical disc drive comprises a first low pass filter (LPF) of a first sampling rate, filtering a digital input signal; a down-sampler receiving a first filtered signal form the first LPF to down-sample the first filtered signal by an integer factor N; a second LPF of a second sampling rate, filtering a first down-sampled signal from the down-sampler, wherein the second LPF has a corner frequency corresponding to a desired frequency of the high pass filtering device, and the second sampling rate is equal to 1/N times the first sampling rate; an up-sampler receiving a second filtered signal from the second LPF to up-sample the second filtered signal by the factor N; and a subtractor subtracting an up-sampled signal output by the up-sampler from the digital input signal when the filter frequency is below a threshold frequency.

Abstract translation: 用于光盘驱动器的高通滤波装置包括第一采样率的第一低通滤波器（LPF），对数字输入信号进行滤波; 下采样器从第一LPF接收第一滤波信号，以对第一滤波信号进行下采样整数因子N; 第二采样率的第二LPF，滤波来自下采样器的第一下采样信号，其中第二LPF具有对应于高通滤波器件的期望频率的转角频率，第二采样率等于 1 / N次第一次采样率; 上采样器接收来自第二LPF的第二滤波信号，以将第二滤波信号向上采样因子N; 以及当滤波器频率低于阈值频率时，减法器从数字输入信号中减去上采样器输出的上采样信号。

公开(公告)号：US20070291613A1

公开(公告)日：2007-12-20

申请号：US11758017

申请日：2007-06-05

Applicant: Chia-Wei Liao ,  Chih-Ching Chen ,  Yuh Cheng ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Chun-Yu Lin ,  Shiue-Shin Liu ,  Shu-Hung Chou ,  Yu-Hsuan Lin

Inventor： Chia-Wei Liao ,  Chih-Ching Chen ,  Yuh Cheng ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Chun-Yu Lin ,  Shiue-Shin Liu ,  Shu-Hung Chou ,  Yu-Hsuan Lin

IPC: G11B7/00

CPC classification number: G11B20/10 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/0943 ,  G11B7/1263 ,  G11B20/10009 ,  G11B2220/2537

Abstract: A signal processing apparatus includes sample and hold units for holding a plurality of analog photo diode signals. A signal holding controller generates control signals to the sample and hold units for holding the analog photo diode signals. Analog adjusting modules adjust the held analog photo diode signals. A multiplexer selectively couples one input end of the multiplexer to the output end of the multiplexer for outputting the adjusted analog photo diode signals. An analog to digital converter converts the adjusted analog photo diode signals into digital photo diode signals.

Abstract translation: 信号处理装置包括用于保持多个模拟光电二极管信号的采样和保持单元。 信号保持控制器产生用于保持模拟光电二极管信号的采样和保持单元的控制信号。 模拟调整模块调节保持的模拟光电二极管信号。 复用器选择性地将多路复用器的输入端耦合到多路复用器的输出端，以输出经调整的模拟光电二极管信号。 模数转换器将调整后的模拟光电二极管信号转换为数字光电二极管信号。

公开(公告)号：US20070280070A1

公开(公告)日：2007-12-06

申请号：US11755202

申请日：2007-05-30

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

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

IPC: G11B20/10

CPC classification number: 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

Abstract: 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.

Abstract translation: 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

Applicant: Yuh Cheng

Inventor： Yuh Cheng

IPC: G11B7/095

CPC classification number: G11B7/0906 ,  G11B7/0943

Abstract: 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.

Abstract translation: 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。