公开(公告)号：US07680008B2

公开(公告)日：2010-03-16

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：US20100039908A1

公开(公告)日：2010-02-18

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： G11B7/125

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：US07474235B2

公开(公告)日：2009-01-06

申请号：US11758119

申请日：2007-06-05

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： H03M7/00

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：US20070291620A1

公开(公告)日：2007-12-20

申请号：US11758007

申请日：2007-06-05

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

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

IPC分类号： G11B7/00

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

摘要： A method for controlling a specific output power level emitted from a laser diode (LD) in an optical pick-up head unit (OPU) is disclosed. The LD is configured to provide a plurality of output power levels for accessing/recording an optical disc. The method includes: determining a specific power control value according to a first output power level, a second output power level, a first power control value of the first output power level, and the specific output power level, wherein the first output power level is less than the specific output power level and greater than the second output power level; and driving the LD to emit the specific output power level according to the specific power control value, the first power control value, and a second power control value of the second output power level.

摘要翻译： 公开了一种用于控制从光学拾取头单元（OPU）中的激光二极管（LD）发射的特定输出功率电平的方法。 LD被配置为提供用于访问/记录光盘的多个输出功率电平。 该方法包括：根据第一输出功率电平，第二输出功率电平，第一输出功率电平的第一功率控制值和特定输出功率电平来确定特定功率控制值，其中第一输出功率电平为 小于特定输出功率电平并大于第二输出功率电平; 以及根据所述特定功率控制值，所述第一功率控制值和所述第二输出功率电平的第二功率控制值来驱动所述LD发出所述特定输出功率电平。

公开(公告)号：US20070280086A1

公开(公告)日：2007-12-06

申请号：US11758018

申请日：2007-06-05

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

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

IPC分类号： G11B7/00

CPC分类号： G11B7/1263 ,  G11B7/08505 ,  G11B7/0903

摘要： A laser power control system and related method for reducing a settling time in a target laser power transition are disclosed. The laser power control system includes a state decision circuit, for generating a state decision signal according to a selected operational state of a target circuit; a plurality of buffers, for storing a plurality of control data corresponding to a plurality of candidate operational states of the target circuit respectively; and a multiplexer, coupled between the state decision circuit and the buffers, for coupling a selected buffer of the buffers and the target circuit according to the state decision signal for outputting a control datum stored in the selected buffer to the target circuit.

摘要翻译： 公开了一种用于减少目标激光功率转换中的建立时间的激光功率控制系统和相关方法。 激光功率控制系统包括状态判定电路，用于根据所选择的目标电路的操作状态产生状态判定信号; 多个缓冲器，用于分别存储对应于所述目标电路的多个候选操作状态的多个控制数据; 以及耦合在所述状态判定电路和所述缓冲器之间的多路复用器，用于根据用于将所选择的缓冲器中存储的控制数据输出到所述目标电路的所述状态判定信号来耦合所述缓冲器的选定缓冲器和所述目标电路。

公开(公告)号：US20070280069A1

公开(公告)日：2007-12-06

申请号：US11755186

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

摘要： The invention provides an automatic gain controller processing an input signal for wobble detection circuit. An exemplary embodiment of the automatic gain controller comprises an envelope detection module, an analog to digital converter, a digital control module, a digital to analog converter, and a variable gain amplifier. The envelope detection module detects an envelope magnitude of an amplified signal. The analog to digital converter converts the envelope magnitude from analog to digital to obtain a digital envelope signal. The digital control module determines a digital gain signal for amplification of the input signal according to the digital envelope signal. The digital to analog converter converts the digital gain signal to an analog gain signal. The variable gain amplifier then amplifies the input signal according to the analog gain signal to obtain the amplified wobble signal.

摘要翻译： 本发明提供一种自动增益控制器来处理摆动检测电路的输入信号。 自动增益控制器的示例性实施例包括包络检测模块，模数转换器，数字控制模块，数模转换器和可变增益放大器。 包络检测模块检测放大信号的包络幅度。 模数转换器将包络幅度从模拟转换为数字，以获得数字包络信号。 数字控制模块根据数字包络信号确定用于放大输入信号的数字增益信号。 数模转换器将数字增益信号转换为模拟增益信号。 然后，可变增益放大器根据模拟增益信号放大输入信号，以获得放大的摆动信号。

公开(公告)号：US20060153048A1

公开(公告)日：2006-07-13

申请号：US11308016

申请日：2006-03-03

申请人： Kuo-Jung Lan ,  Tzu-Ming Chou ,  Chi-Pei Huang ,  Chih-Chung Wu ,  Kuang-Jung Chang

发明人： Kuo-Jung Lan ,  Tzu-Ming Chou ,  Chi-Pei Huang ,  Chih-Chung Wu ,  Kuang-Jung Chang

IPC分类号： G11B7/00

CPC分类号： G11B7/00718 ,  G11B7/005 ,  G11B7/0053 ,  G11B7/00745 ,  G11B20/10009

摘要： Methods and apparatuses for generating a protection window signal for use in header detection of an optical storage medium are disclosed. One of the methods involves: extracting a maximum level of an RF-sum signal derived from the optical storage medium to generate a first level value; extracting at least one of DC level and bottom level of the RF-sum signal to generate a corresponding second level value; calculating a reference level according to the first and second level values; and comparing the RF-sum signal with the reference level to determine a protection window signal. When the accessing of the optical storage medium is switched from a first area with a first reflectivity to a second area with a second reflectivity, the response speed of extracting the DC level/bottom level of the RF-sum signal, the weighting of the second level value, or the DC level of the RF-sum signal is adjusted.

摘要翻译： 公开了用于产生用于光存储介质的报头检测中的保护窗信号的方法和装置。 所述方法之一涉及：提取从所述光学存储介质导出的RF和信号的最大电平以产生第一电平值; 提取RF和信号的DC电平和底层电平中的至少一个以产生相应的第二电平值; 根据第一和第二水平值计算参考水平; 以及将RF和信号与参考电平进行比较以确定保护窗口信号。 当光存储介质的访问从具有第一反射率的第一区域切换到具有第二反射率的第二区域时，提取RF和信号的DC电平/底层电平的响应速度，第二 电平值或RF和信号的直流电平进行调整。

公开(公告)号：US20050219970A1

公开(公告)日：2005-10-06

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： G11B5/09 ,  G11B7/00 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/085 ,  G11B7/09 ,  G11B19/04 ,  G11B19/26 ,  G11B27/13

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。