公开(公告)号：US20080049571A1

公开(公告)日：2008-02-28

申请号：US11834787

申请日：2007-08-07

申请人： Kuo-jung Lan

发明人： Kuo-jung Lan

IPC分类号： G11B7/095

CPC分类号： G11B7/0953

摘要： An apparatus and a method for compensating periodic signal in an optical disc drive are described. The control apparatus includes an amplitude processing unit, a phase processing unit, and a wave generator. The amplitude processing unit processes the amplitude of the input signal (Sin) based on a reference signal (Sref) for generating an amplitude signal (Sad) wherein the amplitude signal (Sad) has at least one amplitude value (Vad). The phase processing unit processes the phase of the input signal (Sin) based on the reference signal (Sref) for generating a phase signal (Spd) wherein the phase signal (Spd) has at least one phase value (Vpd) during the cycle of the reference signal (Sref). The wave generator generates a compensated wave signal (Scom) based on the amplitude value (Vad) and the phase value (Vpd) during the cycle of the reference signal (Sref), and the wave generator outputs the compensated wave signal (Scom) for compensating the periodic signal of the input signal (Sin).

摘要翻译： 描述了用于补偿光盘驱动器中的周期性信号的装置和方法。 控制装置包括幅度处理单元，相位处理单元和波发生器。 振幅处理单元基于用于产生振幅信号（S SUB>＆lt;＆gt;＆gt;）的参考信号（S SUB）来处理输入信号的幅度（S SUB） / SUB>），其中振幅信号（S SUB）具有至少一个振幅值（V SUB）。 相位处理单元基于用于产生相位信号的参考信号（S SUB）来处理输入信号的相位（S SUB），以便产生相位信号（S＆lt; Pd＆lt; / SUB>），其中在参考信号的周期期间，相位信号（S SUB）pd具有至少一个相位值（V SUB pd ）， / SUB>）。 波发生器基于振幅值（V SUB）和相位值（V SUB）来产生经补偿的波信号（S SUB）。 在参考信号（S SUB）的循环期间，波发生器输出用于补偿输入信号（S（s））的周期信号的补偿波信号 _在）。

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：US08441899B2

公开(公告)日：2013-05-14

申请号：US13181125

申请日：2011-07-12

申请人： Kuo-jung Lan

发明人： Kuo-jung Lan

IPC分类号： G11B20/10 ,  G11B7/095 ,  G05B11/28

CPC分类号： G11B7/0953

摘要： An apparatus and a method for compensating periodic signal in an optical disc drive are described. The control apparatus includes an amplitude processing unit, a phase processing unit, a wave generator, a first switch module and a second switch module. The amplitude processing unit processes the amplitude of the input signal based on a reference signal for generating an amplitude signal. The phase processing unit processes the phase of the input signal based on the reference signal for generating a phase signal. The first switch module switches the amplitude signal to select one of the amplitude value and a predetermined amplitude value. The second switch module switches the phase signal to select one of the phase value and a predetermined phase value. The wave generator generates a compensated wave signal based on the selected amplitude value and the selected phase value, and outputs the compensated wave signal.

摘要翻译： 描述了用于补偿光盘驱动器中的周期性信号的装置和方法。 控制装置包括幅度处理单元，相位处理单元，波发生器，第一开关模块和第二开关模块。 幅度处理单元基于用于产生振幅信号的参考信号来处理输入信号的幅度。 相位处理单元基于用于产生相位信号的参考信号来处理输入信号的相位。 第一开关模块切换振幅信号以选择振幅值和预定振幅值之一。 第二开关模块切换相位信号以选择相位值和预定相位值之一。 波发生器基于所选择的振幅值和所选择的相位值产生补偿波信号，并输出经补偿的波信号。

公开(公告)号：US07948409B2

公开(公告)日：2011-05-24

申请号：US12603762

申请日：2009-10-22

申请人： Gwo-Huei Wu ,  Kuo-Jung Lan ,  Yu-Hsuan Lin ,  You-Wen Chang

发明人： Gwo-Huei Wu ,  Kuo-Jung Lan ,  Yu-Hsuan Lin ,  You-Wen Chang

IPC分类号： H03M1/10

CPC分类号： G11B7/0941 ,  G11B7/0062 ,  G11B7/0903 ,  G11B7/0912 ,  G11B7/1263 ,  H03M1/1225 ,  H03M1/129

摘要： A method for calibrating an initial driving signal for driving an optical pick-up head of an optical disk drive is provided. On one embodiment, said optical disk drive is utilized for reading or writing data on an optical disk, the optical disk comprises a plurality of auto power control areas (APC areas) and a plurality of data areas, and the APC areas and the data areas are interleaved in between. First, in the APC areas, an initial driving signal is used to drive the optical pick-up head to emit laserbeam. A detected level of the laserbeam is then obtained. An update initial driving signal is then calibrated according to the detected level and a target level.

摘要翻译： 提供了用于校准用于驱动光盘驱动器的光学拾取头的初始驱动信号的方法。 在一个实施例中，所述光盘驱动器用于在光盘上读取或写入数据，该光盘包括多个自动功率控制区域（APC区域）和多个数据区域，以及APC区域和数据区域 在它们之间交错。 首先，在APC区域中，使用初始驱动信号来驱动光学拾取头发射激光束。 然后获得激光束的检测水平。 然后根据检测到的电平和目标电平校准更新初始驱动信号。

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：US20100074066A1

公开(公告)日：2010-03-25

申请号：US12236518

申请日：2008-09-24

申请人： Chi-Jui Lee ,  Shih-Hao Ko ,  Kuo-Jung Lan

发明人： Chi-Jui Lee ,  Shih-Hao Ko ,  Kuo-Jung Lan

IPC分类号： G11B7/00

CPC分类号： G11B7/08511 ,  G11B7/0909 ,  G11B7/0945

摘要： The present invention discloses a servo system of an optical storage device, the optical storage device includes a pick-up unit for detecting signals reflected from an optical disc to generate a plurality of detecting signals, the servo system includes: a focus error signal generating module coupled to the pick-up unit for generating a plurality of focus error signals according to the detecting signals; a focus servo control module coupled to the focus error signal generating module for generating a focus control signal according to the focus error signals; and a focus actuator coupled to the focus servo control module and the pick-up unit for controlling the pick-up unit to adjust a focus position on the optical disc according to the focus control signal.

摘要翻译： 本发明公开了一种光存储装置的伺服系统，所述光存储装置具有拾取单元，用于检测从光盘反射的信号，生成多个检测信号，所述伺服系统包括：聚焦误差信号生成模块 耦合到拾取单元，用于根据检测信号产生多个聚焦误差信号; 聚焦伺服控制模块，其耦合到聚焦误差信号产生模块，用于根据聚焦误差信号产生聚焦控制信号; 以及耦合到聚焦伺服控制模块和拾取单元的聚焦致动器，用于控制拾取单元根据聚焦控制信号调整光盘上的聚焦位置。

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：US07382707B2

公开(公告)日：2008-06-03

申请号：US11160114

申请日：2005-06-09

申请人： Tzu-Ming Chou ,  Kun-Hung Hsieh ,  Wei-Yu Lin ,  Yao-Lung Chuang ,  Chun-Jen Chen ,  Kuo-Jung Lan

发明人： Tzu-Ming Chou ,  Kun-Hung Hsieh ,  Wei-Yu Lin ,  Yao-Lung Chuang ,  Chun-Jen Chen ,  Kuo-Jung Lan

IPC分类号： G11B7/00

CPC分类号： G11B19/041 ,  G11B7/0045 ,  G11B7/1267 ,  G11B19/04 ,  G11B19/26 ,  G11B19/28

摘要： A recording method for an optical disk drive is implemented as follows. First, at least one of the level of the focusing error signal, the level of the tracking error signal, a wobble synchronization pattern loss, the error rate of demodulating a wobble signal, the frequency of buffer under-run occurrence, the temperature of the drive, the wobble jitter and the level of write power is detected. If at least one detected value exceeds the preset value, the recording will be ceased. Then, the rotation speed of the optical disk drive is decreased, and the recording is resumed with the decreased rotation speed. If at least one of the temperature of the drive, the wobble jitter and the estimated write power exceeds the reset value before recording starts, the rotation speed of the optical disk drive is decreased before recording.

摘要翻译： 光盘驱动器的记录方法如下进行。 首先，聚焦误差信号的电平，跟踪误差信号的电平，摆动同步模式损耗，解调摆动信号的误码率，缓冲器欠载发生的频率， 驱动，检测摆动抖动和写入电平。 如果至少一个检测值超过预设值，则停止录制。 然后，光盘驱动器的旋转速度降低，并且以降低的转速恢复记录。 如果在记录开始之前驱动器的温度，摆动抖动和估计的写入功率中的至少一个超过复位值，则在记录之前光盘驱动器的转速减小。

公开(公告)号：US20080031101A1

公开(公告)日：2008-02-07

申请号：US11840373

申请日：2007-08-17

申请人： Tzu-Ming Chou ,  Kun-Hung Hsieh ,  Wei-Yu Lin ,  Yao-Lung Chuang ,  Chun-Jen Chen ,  Kuo-Jung Lan

发明人： Tzu-Ming Chou ,  Kun-Hung Hsieh ,  Wei-Yu Lin ,  Yao-Lung Chuang ,  Chun-Jen Chen ,  Kuo-Jung Lan

IPC分类号： G11B7/00

CPC分类号： G11B19/041 ,  G11B7/0045 ,  G11B7/1267 ,  G11B19/04 ,  G11B19/26 ,  G11B19/28

摘要： A recording method for an optical disk drive is implemented as follows. First, at least one of the level of the focusing error signal, the level of the tracking error signal, a wobble synchronization pattern loss, the error rate of demodulating a wobble signal, the frequency of buffer under-run occurrence, the temperature of the drive, the wobble jitter and the level of write power is detected. If at least one detected value exceeds the preset value, the recording will be ceased. Then, the rotation speed of the optical disk drive is decreased, and the recording is resumed with the decreased rotation speed. If at least one of the temperature of the drive, the wobble jitter and the estimated write power exceeds the reset value before recording starts, the rotation speed of the optical disk drive is decreased before recording.

摘要翻译： 光盘驱动器的记录方法如下进行。 首先，聚焦误差信号的电平，跟踪误差信号的电平，摆动同步模式损耗，解调摆动信号的误码率，缓冲器欠载发生的频率， 驱动，检测摆动抖动和写入电平。 如果至少一个检测值超过预设值，则停止录制。 然后，光盘驱动器的旋转速度降低，并且以降低的转速恢复记录。 如果在记录开始之前驱动器的温度，摆动抖动和估计的写入功率中的至少一个超过复位值，则在记录之前光盘驱动器的转速减小。

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。