公开(公告)号：US08896319B2

公开(公告)日：2014-11-25

申请号：US13404928

申请日：2012-02-24

申请人： Chia-Wei Liao ,  Ko-Cheng Wang

发明人： Chia-Wei Liao ,  Ko-Cheng Wang

IPC分类号： G01R31/02 ,  G01R31/12

CPC分类号： H05B33/0827 ,  G01R31/025 ,  H05B33/089

摘要： A light emitting device control circuit controls a light emitting array which includes a plurality of light emitting device strings. Each light emitting device string includes a first terminal which is connected to a common node, a second terminal, and a plurality of light emitting devices connected in series. The light emitting device control circuit includes: a short detection circuit, coupled to the second terminals to receive second terminal signals from the second terminals, generating comparison signals according to whether the second terminal signals are higher than a reference signal, and generating a short detection signal according to whether a number of the comparison signals is between a first setting value and a second setting value.

摘要翻译： 发光器件控制电路控制包括多个发光器件串的发光阵列。 每个发光器件串包括连接到公共节点的第一端子，第二端子和串联连接的多个发光器件。 发光器件控制电路包括：短路检测电路，耦合到第二端子以接收来自第二端子的第二端子信号，根据第二端子信号是否高于参考信号产生比较信号，并产生短路检测 根据多个比较信号是否处于第一设定值和第二设定值之间的信号。

公开(公告)号：US08511200B2

公开(公告)日：2013-08-20

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 ,  B62M25/04

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, with the operation lever 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，其中操作杆在用于上移操作的第一平面中枢转并且在用于下移操作的第二平面中枢转。

公开(公告)号：US08149146B2

公开(公告)日：2012-04-03

申请号：US13008485

申请日：2011-01-18

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, an automatic power control method, 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，自动功率控制方法，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：US20110255566A1

公开(公告)日：2011-10-20

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：US20110122747A1

公开(公告)日：2011-05-26

申请号：US13008485

申请日：2011-01-18

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： G11B20/10

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

摘要： An automatic power control system, an automatic power control method, 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，自动功率控制方法，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：US20110110205A1

公开(公告)日：2011-05-12

申请号：US13009668

申请日：2011-01-19

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 when the optical disk drive encounters an operating state transition. In a first 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 a second 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。 当光盘驱动器遇到操作状态转换时，该装置调节控制光盘驱动器的伺服系统的多个伺服信号的增益。 在第一模式中，该装置的至少一个AGC环路在操作状态转换之后的特定时段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。 在第二模式中，装置的至少一个AGC环路根据紧接在运行状态转换之后的当前运行状态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：US20100149181A1

公开(公告)日：2010-06-17

申请号：US12344827

申请日：2008-12-29

申请人： Huai-Che Lee ,  Chia-Wei Liao ,  Zong-Hong Lyu

发明人： Huai-Che Lee ,  Chia-Wei Liao ,  Zong-Hong Lyu

IPC分类号： G06T17/20

CPC分类号： G06T15/005 ,  G06T11/203 ,  G06T11/40

摘要： The invention provides a vector graphics system. In one embodiment, the vector graphics system comprises a path rendering manager module and a rendering module. The path rendering manager module receives path data, calculates a changing rate of the path data, and selects a filling method from a tessellation filling method and a Stencil filling method according to the changing rate. The rendering module fills the path data according to the tessellation filling method when the filling method is the tessellation filling method, and fills the path data according to the Stencil filling method when the filling method is the Stencil filling method.

摘要翻译： 本发明提供了一种矢量图形系统。 在一个实施例中，矢量图形系统包括路径渲染管理器模块和渲染模块。 路径渲染管理器模块接收路径数据，计算路径数据的变化率，并根据变化率从镶嵌填充方法和模板填充方法中选择填充方法。 当填充方法为镶嵌填充方法时，渲染模块根据镶嵌填充方法填充路径数据，并在填充方法为模版填充方法时根据模板填充方法填充路径数据。

公开(公告)号：US07706219B2

公开(公告)日：2010-04-27

申请号：US11758017

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 ,  Shiue-Shin Liu ,  Shu-Hung Chou ,  Yu-Hsuan Lin ,  Jong-Woei Chen

发明人： 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 ,  Jong-Woei Chen

IPC分类号： G11B7/00

CPC分类号： G11B20/10 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/0943 ,  G11B7/1263 ,  G11B20/10009 ,  G11B2220/2537

摘要： 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.

摘要翻译： 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：US20090141755A1

公开(公告)日：2009-06-04

申请号：US12198879

申请日：2008-08-26

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： H01S3/13

CPC分类号： G11B7/126

摘要： A method for controlling laser power of an optical pickup unit (OPU) includes: providing a first relationship between the laser power and a driving parameter, wherein the driving parameter is utilized for driving a laser diode (LD) of the OPU, and the first relationship corresponds to a first temperature; utilizing a temperature-related model to convert the first relationship into a second relationship between the laser power and the driving parameter, wherein the second relationship corresponds to a second temperature; and storing the first relationship for being utilized at the first temperature, and storing the second relationship for being utilized at the second temperature.

摘要翻译： 一种用于控制光学拾取单元（OPU）的激光功率的方法包括：提供激光功率和驱动参数之间的第一关系，其中驱动参数用于驱动OPU的激光二极管（LD），第一 关系对应于第一温度; 利用温度相关模型将第一关系转换成激光功率和驱动参数之间的第二关系，其中第二关系对应于第二温度; 并存储在第一温度下被利用的第一关系，并且存储在第二温度下被利用的第二关系。

公开(公告)号：US20090051411A1

公开(公告)日：2009-02-26

申请号：US12222933

申请日：2008-08-20

申请人： Chia-Wei Liao

发明人： Chia-Wei Liao

IPC分类号： H01H37/76

CPC分类号： H01H85/0241

摘要： A trimmer circuit is so configured that an electronic device will break down to produce a high current to trim a fuse. The electronic device is selectively configured to have a breakdown voltage lower than an applied voltage, for the trigger of its breakdown to be controllable. In an embodiment, the electronic device is switched between two states having two breakdown voltages respectively, and the applied voltage is higher than one of the breakdown voltages and lower than the other one.

摘要翻译： 微调电路被配置成使得电子设备将分解以产生高电流以修整保险丝。 电子设备被选择性地配置为具有低于施加电压的击穿电压，以使其击穿的触发是可控的。 在一个实施例中，电子设备分别在具有两个击穿电压的两个状态之间切换，并且所施加的电压高于击穿电压中的一个并且低于另一个击穿电压。