公开(公告)号：US08217632B2

公开(公告)日：2012-07-10

申请号：US12658560

申请日：2010-02-05

申请人： Jing-Meng Liu ,  Chia-Wei Liao ,  Heng Yun

发明人： Jing-Meng Liu ,  Chia-Wei Liao ,  Heng Yun

IPC分类号： G05F1/613 ,  G05F1/44

CPC分类号： H05B33/0818 ,  H02M3/1582

摘要： The present invention discloses a synchronous driver circuit, comprising: an inductor having one end coupled to an input voltage; a first power transistor having one end coupled to the other end of the inductor and another end supplying an output voltage; a second power transistor having one end coupled to the other end of the inductor and another end coupled to ground; a control circuit for controlling the operation of the first and second power transistors; a gate driver coupled to the control circuit and having an output controlling the gate of the first power transistor; and a bootstrap capacitor having one end coupled to a voltage node and the other end coupled to the other end of the inductor, the voltage across the bootstrap capacitor being provided as the operational voltage of the gate driver.

摘要翻译： 本发明公开了一种同步驱动器电路，包括：电感器，其一端耦合到输入电压; 第一功率晶体管，其一端耦合到电感器的另一端，另一端提供输出电压; 第二功率晶体管，其一端耦合到电感器的另一端，另一端耦合到地; 用于控制第一和第二功率晶体管的操作的控制电路; 耦合到控制电路并具有控制第一功率晶体管的栅极的输出的栅极驱动器; 以及自耦电容器，其一端耦合到电压节点，另一端耦合到电感器的另一端，所述自举电容器两端的电压被提供为栅极驱动器的工作电压。

公开(公告)号：US09337716B2

公开(公告)日：2016-05-10

申请号：US13846568

申请日：2013-03-18

申请人： Chia-Wei Liao ,  Jing-Meng Liu

发明人： Chia-Wei Liao ,  Jing-Meng Liu

IPC分类号： H02M1/42 ,  H02M1/12

CPC分类号： H02M1/42 ,  G05F3/262 ,  H02M1/08 ,  H02M1/126 ,  H02M1/4208 ,  H02M2001/0009 ,  Y02B70/126

摘要： The present invention discloses a power supply circuit with power factor correction (PFC) function, and an automatic gain control circuit therefor and a control method thereof. The power supply circuit includes the automatic gain control circuit and a load driver circuit. The automatic gain control circuit converts an input voltage to a regulation voltage, and the load driver circuit generates an output current according to the regulation voltage. The automatic gain control circuit automatically adjust the regulation voltage such that the regulation voltage has a substantially fixed amplitude or fixed average value under different input voltages of different specifications, and the output current provided by the load driver circuit varies in phase with the input voltage to provide a PFC function.

摘要翻译： 本发明公开了一种具有功率因数校正（PFC）功能的电源电路及其自动增益控制电路及其控制方法。 电源电路包括自动增益控制电路和负载驱动电路。 自动增益控制电路将输入电压转换为调节电压，负载驱动电路根据调节电压产生输出电流。 自动增益控制电路自动调节调节电压，使得调节电压在不同规格的不同输入电压下具有基本上固定的幅度或固定平均值，负载驱动电路提供的输出电流与输入电压相同 提供PFC功能。

公开(公告)号：US09055646B2

公开(公告)日：2015-06-09

申请号：US13775156

申请日：2013-02-23

申请人： Chia-Wei Liao ,  Jing-Meng Liu

发明人： Chia-Wei Liao ,  Jing-Meng Liu

IPC分类号： H05B33/08

CPC分类号： H05B33/0851 ,  H05B33/0815

摘要： The present invention discloses a light emitting device circuit and a control method thereof. The light emitting device circuit includes: a light emitting device control circuit, for converting an input voltage to an output voltage according to a control signal, wherein the output voltage is supplied to a light emitting device circuit; a voltage supply circuit, which is coupled to the light emitting device circuit, for generating a supply voltage from the output voltage; and a remote control circuit, which is coupled to the voltage supply circuit, for receiving the supply voltage, and generating the control signal according to a remote signal.

摘要翻译： 本发明公开了一种发光器件电路及其控制方法。 发光器件电路包括：发光器件控制电路，用于根据控制信号将输入电压转换为输出电压，其中输出电压被提供给发光器件电路; 耦合到所述发光器件电路的用于从所述输出电压产生电源电压的电压供应电路; 以及遥控电路，其耦合到电压供应电路，用于接收电源电压，并根据远程信号产生控制信号。

公开(公告)号：US20080211471A1

公开(公告)日：2008-09-04

申请号：US12071727

申请日：2008-02-26

申请人： Chia-Wei Liao ,  Jing-Meng Liu ,  Jwin-Yen Guo

发明人： Chia-Wei Liao ,  Jing-Meng Liu ,  Jwin-Yen Guo

IPC分类号： G05F1/00

CPC分类号： H02M3/156 ,  H02M2001/0009

摘要： In an adaptive leading-edge blanking circuit and method for a switching mode power converter, an inductor current of the converter is sensed and compared with a threshold to decide an end point of a leading-edge blanking time. Circuit and method are further provided for preventing the converter from entering pulse skipping mode, which employs a current trimming circuit in an oscillator for a PWM controller in the converter to reduce a charging current in the oscillator if the output voltage of the converter is excessively high, to thereby reduce the oscillator frequency and in turn lower the switching frequency of a high-side power switch of the converter.

摘要翻译： 在用于开关模式功率转换器的自适应前沿消隐电路和方法中，感测转换器的电感器电流并将其与阈值进行比较以决定前沿消隐时间的终点。 进一步提供电路和方法，用于防止转换器进入脉冲跳跃模式，其在转换器中的PWM控制器的振荡器中采用电流微调电路，以在转换器的输出电压过高时降低振荡器中的充电电流 ，从而降低振荡器频率，从而降低转换器的高侧功率开关的开关频率。

公开(公告)号：US20120134644A1

公开(公告)日：2012-05-31

申请号：US13028492

申请日：2011-02-16

申请人： Chia-Wei Liao ,  Chih-Chun Lai

发明人： Chia-Wei Liao ,  Chih-Chun Lai

IPC分类号： H04N9/87

CPC分类号： G11B27/034 ,  G11B27/105

摘要： A playback apparatus, a playback method, and a computer program product thereof are provided. The playback apparatus is adapted to play a video dynamic image. The video dynamic image comprises a dynamic object. The dynamic object has a first selection frame, and moves with a velocity. The playback apparatus comprises a processing unit and an input unit. The processing unit is configured to expand the first selection frame to generate a second selection frame according to the velocity. The input unit is electrically connected to the processing unit and is configured to transmit a selection signal to the processing unit so that the processing unit selects the dynamic object by means of the second selection frame according to the selection signal.

摘要翻译： 提供了一种播放装置，播放方法及其计算机程序产品。 播放装置适于播放视频动态图像。 视频动态图像包括动态对象。 动态对象具有第一选择框，并以速度移动。 播放装置包括处理单元和输入单元。 处理单元被配置为根据速度扩展第一选择帧以生成第二选择帧。 输入单元电连接到处理单元，并且被配置为向处理单元发送选择信号，使得处理单元根据选择信号通过第二选择帧来选择动态对象。

公开(公告)号：US08089834B2

公开(公告)日：2012-01-03

申请号：US13009668

申请日：2011-01-19

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

发明人： Chia-Wei Liao ,  Chih-Ching Chen ,  Yuh Chen ,  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：US20100099530A1

公开(公告)日：2010-04-22

申请号：US12642924

申请日：2009-12-21

申请人： Douglas Chiang ,  Chia-Wei Liao

发明人： Douglas Chiang ,  Chia-Wei Liao

IPC分类号： F16H55/30 ,  F16H55/17

CPC分类号： B62M9/10

摘要： A cogset, which is adapted to connect to a rotatable hub of a bicycle, includes first, second and third cog assemblies. Each cog assembly has at least one cog with which a chain on the bicycle selectively engages in response to bicycle speed changes. Additionally, the first and third cog assemblies have structural contacts with the connected hub of the bicycle, whereas the second cog assembly does not have any structural contact with the connected hub, but the second cog assembly is retained between the first and third cog assemblies in order to connect it to the hub and enable it rotate with the hub stably.

摘要翻译： 适于连接到自行车的可旋转轮毂的壳体包括第一，第二和第三齿轮组件。 每个齿轮总成具有至少一个齿轮，其中自行车上的链条响应于自行车速度变化选择性地接合。 此外，第一和第三齿轮组件具有与自行车的连接的轮毂的结构接触，而第二齿轮组件不与连接的轮毂具有任何结构接触，但是第二齿轮组件保持在第一和第三齿轮组件之间 将其连接到集线器并使其能够稳定地与集线器一起旋转。

公开(公告)号：US20070280079A1

公开(公告)日：2007-12-06

申请号：US11758006

申请日：2007-06-05

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

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

IPC分类号： G11B20/10

CPC分类号： G11B20/10009 ,  G11B2220/2537

摘要： An asymmetry measurement apparatus is disclosed. The asymmetry measurement apparatus is designed for detecting the recorded data reproduction waveform of an optical storage device in digital domain. The asymmetry measurement apparatus includes an Analog to Digital Converter (ADC) for converting an analog signal to a digital signal; a detection unit for detecting plurality values of the digital signal; and an asymmetry calculation unit for generating an asymmetry value of the digital signal according to the plurality values.

摘要翻译： 公开了一种不对称测量装置。 不对称测量装置被设计用于检测数字域中的光存储装置的记录数据再现波形。 不对称测量装置包括用于将模拟信号转换为数字信号的模数转换器（ADC）; 检测单元，用于检测数字信号的多个值; 以及不对称计算单元，用于根据多个值产生数字信号的不对称值。

公开(公告)号：US20070280059A1

公开(公告)日：2007-12-06

申请号：US11757426

申请日：2007-06-04

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

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

IPC分类号： G11B7/00

CPC分类号： G11B7/094 ,  G11B7/0941 ,  G11B7/0956 ,  G11B20/10009 ,  G11B2020/1287

摘要： An apparatus for light spot servo signal detection for reading an optical recording medium having a plurality of non-writable areas between writable data areas containing address information. An optical pickup provides a light spot to the non-writable areas of the optical recording medium with a predetermined state according to a control signal, and detects optical reflecting signals from the optical recording medium to generate a detection signal. A signal adjusting module offsets signal levels of the detection signal to an operating range to generate an offset shifted detection signal. An analog to digital converter digitizes the offset shifted detection signal to generate a digital signal. A detection circuit detects the servo detection signal according to the digital signal.

摘要翻译： 一种光点伺服信号检测装置，用于读取在包含地址信息的可写数据区之间具有多个不可写区域的光记录介质。 光拾取器根据控制信号以预定状态向光记录介质的不可写区域提供光点，并且检测来自光记录介质的光反射信号以产生检测信号。 信号调整模块将检测信号的信号电平偏移到工作范围以产生偏移移位的检测信号。 模数转换器对偏移检测信号进行数字化以产生数字信号。 检测电路根据数字信号检测伺服检测信号。

公开(公告)号：US20070279274A1

公开(公告)日：2007-12-06

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： H03M1/12

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。