公开(公告)号：US20070076552A1

公开(公告)日：2007-04-05

申请号：US11243066

申请日：2005-10-04

申请人： Ming-Yang Chao ,  Chih-Ching Chen

发明人： Ming-Yang Chao ,  Chih-Ching Chen

IPC分类号： G11B27/36

CPC分类号： G11B27/24 ,  G11B7/00456

摘要： Methods and systems for dynamically updating velocity dependent parameters during optical disc accessing are provided. A velocity estimator estimates a current velocity of a rotating disc. A storage unit stores a plurality set of parameters, each set corresponds to a preset velocity, and a register stores velocity dependent parameters that are currently used for data recording. A batch controller retrieves a set of parameters from the storage unit according to the current velocity estimated by the velocity estimator, and updates the velocity dependent parameter stored in the register using the parameters retrieved from the storage unit.

摘要翻译： 提供了在光盘访问期间动态更新速度相关参数的方法和系统。 速度估计器估计旋转盘的当前速度。 存储单元存储多组参数，每组参数对应于预设速度，并且寄存器存储当前用于数据记录的速度相关参数。 批量控制器根据由速度估计器估计的当前速度从存储单元检索一组参数，并且使用从存储单元检索的参数更新存储在寄存器中的速度相关参数。

公开(公告)号：US07049874B2

公开(公告)日：2006-05-23

申请号：US10695747

申请日：2003-10-30

申请人： Chih-Ching Chen ,  Jyh-Shin Pan ,  Ming-Yang Chao ,  Yi Kwang Hu

发明人： Chih-Ching Chen ,  Jyh-Shin Pan ,  Ming-Yang Chao ,  Yi Kwang Hu

IPC分类号： H03H11/26

CPC分类号： H04M3/02 ,  H04M2201/14

摘要： A digital delaying device for delaying an input signal includes a ring oscillator, a calibration unit, and at least one delay number calculation unit and delay channel. The ring oscillator includes loop-connected delay cells for outputting an oscillation clock. The calibration unit receives a reference clock and the oscillation clock and calculates a pulse number of the oscillation clock corresponding to each reference clock period. The pulse number serves as a period reference pulse number. The calculation unit receives the pulse number and a signal delay value, calculates a signal delay number corresponding to the signal delay value according to the pulse number, and outputs a selection signal. The delay channel includes a multiplexer and cascaded delay cells, which receives an input signal and generates delay signals with different delay timings. The multiplexer selects and outputs one of the delay signals as an output signal according to the selection signal.

摘要翻译： 用于延迟输入信号的数字延迟装置包括环形振荡器，校准单元和至少一个延迟数计算单元和延迟信道。 环形振荡器包括用于输出振荡时钟的环路连接的延迟单元。 校准单元接收参考时钟和振荡时钟，并计算对应于每个参考时钟周期的振荡时钟的脉冲数。 脉冲数用作周期参考脉冲数。 计算单元接收脉冲数和信号延迟值，根据脉冲数计算与信号延迟值对应的信号延迟数，并输出选择信号。 延迟通道包括多路复用器和级联延迟单元，其接收输入信号并产生具有不同延迟定时的延迟信号。 多路复用器根据选择信号选择并输出一个延迟信号作为输出信号。

公开(公告)号：US08300670B2

公开(公告)日：2012-10-30

申请号：US13166817

申请日：2011-06-23

申请人： Hsiao-Yuan Chi ,  Chih-Ching Chen ,  Chia-Wei Liao

发明人： Hsiao-Yuan Chi ,  Chih-Ching Chen ,  Chia-Wei Liao

IPC分类号： H01S3/00

CPC分类号： G11B7/126

摘要： A method for deriving precise control over laser power of an optical pickup unit (OPU) includes: providing an analog-to-digital converter (ADC) within an automatic power calibration (APC) circuit to derive a path gain and/or a path offset from the APC circuit; and selectively performing compensation according to the gain and/or the path offset, in order to maintain precision of a relationship between the laser power and a target command utilized for controlling the laser power. An associated APC circuit comprising an ADC and at least one compensation module is further provided. The ADC is utilized for deriving a path gain and/or a path offset from the APC circuit. The compensation module is utilized for selectively performing compensation according to the path gain and/or the path offset, in order to control the laser power by a target command.

摘要翻译： 用于导出对光学拾取单元（OPU）的激光功率的精确控制的方法包括：在自动功率校准（APC）电路内提供模数转换器（ADC）以导出路径增益和/或路径偏移 从APC电路; 并且根据增益和/或路径偏移选择性地执行补偿，以便保持激光功率与用于控制激光功率的目标指令之间的关系的精度。 还提供了包括ADC和至少一个补偿模块的相关APC电路。 ADC用于从APC电路导出路径增益和/或路径偏移。 补偿模块用于根据路径增益和/或路径偏移选择性地执行补偿，以便通过目标命令控制激光功率。

公开(公告)号：US08270266B2

公开(公告)日：2012-09-18

申请号：US12357409

申请日：2009-01-22

申请人： Tzu-Chieh Lin ,  Yuh Cheng ,  Chih-Ching Chen ,  Tysh-Bin Liu ,  Yu-Hsuan Lin

发明人： Tzu-Chieh Lin ,  Yuh Cheng ,  Chih-Ching Chen ,  Tysh-Bin Liu ,  Yu-Hsuan Lin

IPC分类号： G11B7/00

CPC分类号： G11B7/0053 ,  G11B20/10009 ,  G11B20/10027 ,  G11B20/10046 ,  G11B2020/1239 ,  G11B2020/1268 ,  G11B2020/1274 ,  G11B2220/2537

摘要： A device for detecting wobbles on an optical disc is provided, where the device is utilized for generating a wobble signal according to a plurality of detection signals. The device includes an analog signal processing circuit, a pair of analog-to-digital converters (ADCs), and a digital signal processing circuit. The analog signal processing circuit is arranged to perform analog signal processing on the detection signals to generate a plurality of output signals. In addition, the pair of ADCs are arranged to digitalize the output signals to generate a plurality of digital values. Additionally, the digital signal processing circuit is arranged to perform digital signal processing on the digital values and generate an arithmetic output, where the arithmetic output is utilized for generating the wobble signal or utilized as the wobble signal. An associated method for detecting wobbles on an optical disc is further provided.

摘要翻译： 提供一种用于检测光盘上的摆动的装置，其中该装置用于根据多个检测信号产生摆动信号。 该器件包括模拟信号处理电路，一对模数转换器（ADC）和数字信号处理电路。 模拟信号处理电路被配置为对检测信号执行模拟信号处理以产生多个输出信号。 此外，这对ADC被布置成将输出信号数字化以产生多个数字值。 此外，数字信号处理电路被配置为对数字值执行数字信号处理并产生运算输出，其中运算输出用于产生摆动信号或用作摆动信号。 还提供了一种用于检测光盘上的摆动的相关方法。

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：US20100072335A1

公开(公告)日：2010-03-25

申请号：US12426157

申请日：2009-04-17

申请人： Keng Ping Wang ,  Chin Chang Meng ,  Chih-Ching Chen

发明人： Keng Ping Wang ,  Chin Chang Meng ,  Chih-Ching Chen

IPC分类号： F16B47/00

CPC分类号： F16B47/00

摘要： A fixing device is provided. The fixing device is fixed to a surface, comprising a sucker, a rack, a gear, a transforming unit and a limiting unit. The rack is connected to the sucker. The gear is engaged to the rack. The transforming unit is connected to the gear. The transforming unit rotates the gear to move the rack between a first position and a second position. The rack pushes the sucker to apply a suction force to the surface when the rack is in the first position, and the suction force of the sucker is released when the rack is in the second position. The limiting unit is connected to the rack to restrict the rack.

摘要翻译： 提供定影装置。 固定装置固定在表面上，该表面包括吸盘，齿条，齿轮，转换单元和限制单元。 机架连接到吸盘。 齿轮与机架接合。 变压单元连接到齿轮。 变换单元旋转齿轮以在第一位置和第二位置之间移动齿条。 当机架处于第一位置时，机架推动吸盘向表面施加吸力，并且当机架处于第二位置时吸盘的吸力被释放。 限位单元连接到机架以限制机架。

公开(公告)号：US07684291B2

公开(公告)日：2010-03-23

申请号：US11559416

申请日：2006-11-14

申请人： Yu-Hsuan Lin ,  Yuh Cheng ,  Chih-Ching Chen

发明人： Yu-Hsuan Lin ,  Yuh Cheng ,  Chih-Ching Chen

IPC分类号： G11B7/00

CPC分类号： G11B20/10009 ,  G11B20/10027 ,  G11B20/10037 ,  G11B20/10046 ,  G11B27/22 ,  G11B2220/2537 ,  H03G3/3084

摘要： 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.

摘要翻译： 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：US20090274025A1

公开(公告)日：2009-11-05

申请号：US12364496

申请日：2009-02-02

申请人： Yu-Hsuan Lin ,  Chih-Ching Chen

发明人： Yu-Hsuan Lin ,  Chih-Ching Chen

IPC分类号： G11B20/00

CPC分类号： G11B7/08505

摘要： A device for controlling access to an optical disc includes a control word calculator and a numerically controlled oscillator (NCO). The control word calculator is arranged to calculate a control word corresponding to a radius where the optical disc is accessed. In addition, the NCO is arranged to generate an output frequency according to the control word, wherein the output frequency is utilized for accessing the optical disc. An associated method for controlling access to an optical disc includes: calculating a control word corresponding to a radius where the optical disc is accessed; and generating an output frequency according to the control word, wherein the output frequency is utilized for accessing the optical disc.

摘要翻译： 用于控制对光盘的访问的装置包括控制字计算器和数控振荡器（NCO）。 控制字计算器被配置为计算对应于光盘被访问的半径的控制字。 此外，NCO被配置为根据控制字产生输出频率，其中输出频率用于访问光盘。 用于控制对光盘的访问的相关方法包括：计算对应于访问光盘的半径的控制字; 以及根据所述控制字产生输出频率，其中所述输出频率用于访问所述光盘。

公开(公告)号：US20090073827A1

公开(公告)日：2009-03-19

申请号：US12273601

申请日：2008-11-19

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

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

IPC分类号： G11B7/125

CPC分类号： H03M1/1225 ,  G11B7/0903 ,  G11B7/0912 ,  G11B7/0941 ,  G11B7/1263 ,  H03M1/129

摘要： An automatic power control system, a down sampling circuit and a down sampling method. The automatic power control system is incorporated in an optical disc drive comprising a laser diode for receiving a control signal to generate a laser beam; and a photodetector for detecting the laser beam to generate an analog input signal. The automatic power control system comprises an analog-to-digital converter, a down sampling circuit, a comparator, and a digital-to-analog converter. The analog-to-digital converter converts the analog input signal to digital data. The down sampling circuit, coupled to the analog-to-digital converter, comprises a down sampler, a counter, and a controller. The down sampler receives a predetermined amount of digital data to generate representation data. The counter, coupled to the down sampler, calculates the amount of digital data, and resets the down sampler when the amount equals or exceeds the predetermined count. The controller, coupled to the counter, disables the counter when the digital data is invalid. The comparator, coupled to the down sampling circuit, compares the representation data with predetermined target data to generate error data. The digital-to-analog converter, coupled to the comparator, converts the error data to analog to generate the control signal.

摘要翻译： 自动功率控制系统，下采样电路和下采样方法。 自动功率控制系统结合在包括用于接收控制信号以产生激光束的激光二极管的光盘驱动器中; 以及用于检测激光束以产生模拟输入信号的光电检测器。 自动功率控制系统包括模数转换器，下采样电路，比较器和数 - 模转换器。 模数转换器将模拟输入信号转换为数字数据。 耦合到模数转换器的下采样电路包括下采样器，计数器和控制器。 下采样器接收预定量的数字数据以产生表示数据。 耦合到下采样器的计数器计算数字数据量，并且当量等于或超过预定计数时重置下采样器。 耦合到计数器的控制器在数字数据无效时禁用计数器。 耦合到下采样电路的比较器将表示数据与预定目标数据进行比较以产生误差数据。 耦合到比较器的数模转换器将误差数据转换成模拟以产生控制信号。

公开(公告)号：US20070291622A1

公开(公告)日：2007-12-20

申请号：US11758094

申请日：2007-06-05

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

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

IPC分类号： G11B7/00

CPC分类号： G11B7/0943 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/1263

摘要： 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.

摘要翻译： 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。