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：USD1044341S1

公开(公告)日：2024-10-01

申请号：US29767906

申请日：2021-01-26

申请人： Chia-Wei Liao

设计人： Chia-Wei Liao

摘要： FIG. 1 is a Perspective view of a music studio desk set, showing my new design;
FIG. 2 is a front elevation view of the music studio desk set, showing the main desk with the auxiliary desk removed;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a front elevation view of the music studio desk set, showing the auxiliary desk with the main desk removed;
FIG. 9 is a rear elevation view thereof;
FIG. 10 is a left side elevation view thereof;
FIG. 11 is a right side elevation view thereof;
FIG. 12 is a top plan view thereof; and,
FIG. 13 is a bottom plan view thereof.

公开(公告)号：US08968130B2

公开(公告)日：2015-03-03

申请号：US13069737

申请日：2011-03-23

申请人： Chia-Wei Liao ,  Chung-Yan Huang

发明人： Chia-Wei Liao ,  Chung-Yan Huang

IPC分类号： B62M9/10

CPC分类号： B62M9/10

摘要： A cogset, which is adapted to connect to a rotatable hub in a bicycle, includes a first cog, a second cog connected to the first cog, and a support element installed to the second cog. A limiting side of the support element is abutted against a side of the second cog. The support element is mounted by the first cog. Each of the first and second cogs is not directly connected to the rotatable hub.

摘要翻译： 适于连接到自行车中的可旋转轮毂的齿轮组包括第一齿轮，连接到第一齿轮的第二齿轮和安装到第二齿轮的支撑元件。 支撑元件的限制侧抵靠第二齿轮的一侧。 支撑元件由第一齿轮安装。 第一和第二齿轮中的每一个不直接连接到可旋转轮毂。

公开(公告)号：US20120244978A1

公开(公告)日：2012-09-27

申请号：US13069737

申请日：2011-03-23

申请人： Chia-Wei Liao ,  Chung-Yan Huang

发明人： Chia-Wei Liao ,  Chung-Yan Huang

IPC分类号： B62M9/10

CPC分类号： B62M9/10

摘要： A cogset, which is adapted to connect to a rotatable hub in a bicycle, comprises a first cog, a second cog connected to the first cog, and a support element installed to the second cog. A limiting side of the support element is abutted against a side of the second cog. The support element is mounted by the first cog. Each of the first and second cogs is not directly connected to the rotatable hub.

摘要翻译： 适于连接到自行车中的可旋转轮毂的齿轮组包括第一齿轮，连接到第一齿轮的第二齿轮和安装到第二齿轮的支撑元件。 支撑元件的限制侧抵靠第二齿轮的一侧。 支撑元件由第一齿轮安装。 第一和第二齿轮中的每一个不直接连接到可旋转轮毂。

公开(公告)号：US20110132123A1

公开(公告)日：2011-06-09

申请号：US12633921

申请日：2009-12-09

申请人： Wen-Feng Tsai ,  Chia-Wei Liao

发明人： Wen-Feng Tsai ,  Chia-Wei Liao

IPC分类号： B62K23/06

CPC分类号： B62K23/06 ,  B62M25/04 ,  Y10T74/20043 ,  Y10T74/2028 ,  Y10T74/20287 ,  Y10T74/20438

摘要： A speed control device which is adapted to be used in connection with a derailleur type bicycle has one operation mode for up-shifting the speed and another operation mode for down-shifting the speed. The two operation modes can be affected by an operation lever, and with the operation lever being pivoted in a first plane for the up-shifting operation and in a second plane for the down-shifting operation.

摘要翻译： 一种适用于与拨链器式自行车相关联使用的速度控制装置具有用于上移速度的一种操作模式和用于下降速度的另一操作模式。 两个操作模式可能受到操作杆的影响，并且操作杆在第一平面中枢转以进行上移操作，并且在第二平面中用于下移操作。

公开(公告)号：US07697399B2

公开(公告)日：2010-04-13

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 ,  Kuan-Hua Chao ,  Jong-Woei Chen

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

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：US07693011B2

公开(公告)日：2010-04-06

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 ,  Chia-Hua Chou

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

IPC分类号： G11B7/00

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幅度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：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。