公开(公告)号：US20060033484A1

公开(公告)日：2006-02-16

申请号：US10919015

申请日：2004-08-16

申请人： Nien-Hui Kung ,  Yiu-I Lin ,  Der-Jiunn Wang ,  Chao-Hsuan Chuang ,  Jien-Sheng Chen ,  Shui-Mu Lin ,  Wei-Hsin Wei

发明人： Nien-Hui Kung ,  Yiu-I Lin ,  Der-Jiunn Wang ,  Chao-Hsuan Chuang ,  Jien-Sheng Chen ,  Shui-Mu Lin ,  Wei-Hsin Wei

IPC分类号： H01F29/14

CPC分类号： H05B33/0818 ,  H05B33/0851 ,  Y02B20/346

摘要： A control device, which controls a power-converting module that is coupled to a light-emitting component, includes a duration detecting unit and a control signal generator. The duration detecting unit compares the duration of a predetermined logic state of a pulsating input dim control signal with a reference time period. The control signal generator is enabled by the duration detecting unit so as to generate a control signal that enables the power-converting module to generate a drive voltage for driving the light-emitting component when the duration of the predetermined logic state is not longer than the reference time period. The duration detecting unit disables the control signal generator to disable the power-converting module when the duration of the predetermined logic state is longer than the reference time period.

公开(公告)号：US08138686B2

公开(公告)日：2012-03-20

申请号：US12588702

申请日：2009-10-26

申请人： Shui-Mu Lin ,  Tsung-Wei Huang ,  Jien-Sheng Chen

发明人： Shui-Mu Lin ,  Tsung-Wei Huang ,  Jien-Sheng Chen

IPC分类号： H05B37/02

CPC分类号： H05B33/0848

摘要： For efficiency improvement of a LED display system including a charge pump and a LED connected to either the voltage input terminal or the voltage output terminal of the charge pump, either one or both of two current regulators are enabled according to a voltage detected from the LED, for establishing a driving current for the LED. When the detected voltage is higher than a threshold, the first one of the current sources is enabled sole. When the detected voltage is lower than the threshold, the second one of the current sources is enabled sole, or both the current sources are enabled, or the current sources are alternatively enabled.

摘要翻译： 为了提高LED显示系统的效率，包括电荷泵和连接到电荷泵的电压输入端子或电压输出端子的LED的LED显示系统，两个电流调节器中的一个或两个根据从LED检测的电压被使能 ，用于建立LED的驱动电流。 当检测到的电压高于阈值时，电流源中的第一个可以被单独使能。 当检测到的电压低于阈值时，第二个电流源被启用，或者两个电流源都被使能，或者当前源被备选地使能。

公开(公告)号：US08120348B2

公开(公告)日：2012-02-21

申请号：US12459506

申请日：2009-07-02

申请人： Chueh-Kuei Jan ,  Shui-Mu Lin

发明人： Chueh-Kuei Jan ,  Shui-Mu Lin

IPC分类号： G05F5/00

CPC分类号： H02M3/156 ,  H02M3/1582 ,  H02M2001/0022

摘要： The present invention discloses a power converter with improved line transient, comprising: a power stage circuit including at least one power transistor switch which operates to convert an input voltage to an output voltage; an error amplifier comparing a feedback signal with a reference signal to generate an error signal; an input voltage instant variation extraction circuit extracting an instant variation of the input voltage and generating a signal relating to the instant variation; and a PWM comparator generating a PWM signal according to at least a ramp signal, the error signal, and the signal relating to the instant variation, to thereby control the operation of the power transistor switch in the power stage circuit.

摘要翻译： 本发明公开了一种具有改进的线路瞬变的功率转换器，包括：功率级电路，包括至少一个功率晶体管开关，功率晶体管开关用于将输入电压转换为输出电压; 将反馈信号与参考信号进行比较以产生误差信号的误差放大器; 输入电压瞬时变化提取电路，提取所述输入电压的瞬时变化并产生与所述瞬时变化相关的信号; 以及PWM比较器，根据至少一个斜坡信号，该误差信号和与该瞬时变化相关的信号产生PWM信号，从而控制功率级电路中的功率晶体管开关的操作。

公开(公告)号：US20120013265A1

公开(公告)日：2012-01-19

申请号：US12927281

申请日：2010-11-10

申请人： Shei-Chie Yang ,  Shui-Mu Lin ,  Chuan-Yo Hsiao ,  Huan-Chien Yang

发明人： Shei-Chie Yang ,  Shui-Mu Lin ,  Chuan-Yo Hsiao ,  Huan-Chien Yang

IPC分类号： H05B41/16

CPC分类号： H05B33/0842 ,  H05B33/0818 ,  Y02B20/346

摘要： The present invention discloses an LED controller with de-flicker function and an LED de-flicker circuit and method thereof. The LED controller includes: a duty ratio calculation circuit for receiving a pulse width modulation (PWM) signal and generating a duty input signal, indicating a digital duty ratio of the PWM signal; an LED de-flicker circuit for receiving the duty input signal and generating a duty output signal wherein a noise in the duty input signal is filtered; and a dimming circuit for receiving the duty output signal and generating a dimming signal to control an LED circuit; wherein the duty output signal remains unchanged when the variation of the duty input signal is not larger than a hysteresis threshold, and the duty output signal follows the duty input signal when the variation of the duty input signal is larger than the hysteresis threshold.

摘要翻译： 本发明公开了一种具有去闪烁功能的LED控制器和一个LED去闪烁电路及其方法。 LED控制器包括：占空比计算电路，用于接收脉宽调制（PWM）信号并产生指示PWM信号的数字占空比的占空比输入信号; LED去闪烁电路，用于接收占空比输入信号并产生占空比输出信号，其中对占空比输入信号中的噪声进行滤波; 以及调光电路，用于接收占空比输出信号并产生调光信号以控制LED电路; 其中当占空比输入信号的变化不大于滞后阈值时，占空比输出信号保持不变，当占空比输入信号的变化大于滞后阈值时，占空比输出信号跟随占空比输入信号。

公开(公告)号：US20110169423A1

公开(公告)日：2011-07-14

申请号：US13072714

申请日：2011-03-27

申请人： Tsung-Wei Huang ,  Shui-Mu Lin ,  Nang-Ching Yeung ,  Ti-Ti Liu ,  Huan-Chien Yang

发明人： Tsung-Wei Huang ,  Shui-Mu Lin ,  Nang-Ching Yeung ,  Ti-Ti Liu ,  Huan-Chien Yang

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0827 ,  H05B33/0887 ,  Y02B20/347

摘要： The present invention provides a transistor switch on a light emitting device channel, the transistor switch receiving a control voltage VG. A current source circuit controls the current on the light emitting device channel, the current source circuit requiring a minimum voltage VR for normal operation. The present invention further provides a dynamic headroom controller circuit which compares a voltage VS at a current outflow end of the transistor switch with the voltage VR to determine the relationship between the voltage VS and the voltage VR when the control voltage VG is higher than a reference voltage VH, and adjusts the voltage difference between the voltage VS and the voltage VR accordingly.

摘要翻译： 本发明提供一种在发光器件通道上的晶体管开关，晶体管开关接收控制电压VG。 电流源电路控制发光器件通道上的电流，电流源电路需要用于正常操作的最小电压VR。 本发明还提供了一种动态裕量控制器电路，其将晶体管开关的电流流出端处的电压VS与电压VR进行比较，以在控制电压VG高于参考电压时确定电压VS与电压VR之间的关系 电压VH，并且相应地调整电压VS和电压VR之间的电压差。

公开(公告)号：US20100123978A1

公开(公告)日：2010-05-20

申请号：US12591381

申请日：2009-11-18

申请人： Shui-Mu Lin ,  Ti-Ti Liu ,  Huan-Chien Yang

发明人： Shui-Mu Lin ,  Ti-Ti Liu ,  Huan-Chien Yang

IPC分类号： H02H7/10

CPC分类号： H02H7/1213 ,  H02M1/32 ,  H02M1/36 ,  H02M3/156

摘要： A boost converter includes a load disconnect switch connected between a voltage input terminal and an inductor, a power switch connected to the inductor by a switching node, a diode connected between the switching node and a voltage output terminal, and an output capacitor connected to the voltage output terminal to provide an output voltage. A protection apparatus is connected to the load disconnect switch, switching node and power switch to monitor the voltage at the switching node and the output voltage to provide open circuit and short circuit protection for the boost converter.

摘要翻译： 升压转换器包括连接在电压输入端子和电感器之间的负载断开开关，通过开关节点连接到电感器的电源开关，连接在开关节点和电压输出端子之间的二极管以及连接到开关节点的输出电容器 电压输出端子提供输出电压。 保护装置连接到负载断开开关，开关节点和电源开关，以监视开关节点处的电压和输出电压，为升压转换器提供开路和短路保护。

公开(公告)号：US07714645B2

公开(公告)日：2010-05-11

申请号：US12292061

申请日：2008-11-12

申请人： Shui-Mu Lin ,  Tsung-Wei Huang ,  Jien-Sheng Chen ,  Kwan-Jen Chu

发明人： Shui-Mu Lin ,  Tsung-Wei Huang ,  Jien-Sheng Chen ,  Kwan-Jen Chu

IPC分类号： H03F1/02 ,  H03F3/45

CPC分类号： H03F3/45744 ,  H03F3/3022 ,  H03F3/45183 ,  H03F2203/45212 ,  H03F2203/45616 ,  H03F2203/45726

摘要： A single-ended operational amplifier includes an output stage, a first transconductance amplifier and a second transconductance amplifier. In an offset cancellation mode, two inputs of the first transconductance amplifier are supplied with a reference voltage to sink two currents from two inputs of the output stage respectively, the output stage generates a third current according to the difference between the two currents to charge a capacitor, and the second transconductance amplifier generates two currents according to the voltage in the capacitor to make currents in the two inputs of the output stage equal to each other, thereby canceling the offset of the single-ended operational amplifier.

摘要翻译： 单端运算放大器包括输出级，第一跨导放大器和第二跨导放大器。 在偏移消除模式中，第一跨导放大器的两个输入端被提供有参考电压，以分别从输出级的两个输入端吸收两个电流，输出级根据两个电流之间的差产生第三电流，以对 电容器和第二跨导放大器根据电容器中的电压产生两个电流，以使输出级的两个输入端中的电流彼此相等，从而消除单端运算放大器的偏移。

公开(公告)号：US07518432B2

公开(公告)日：2009-04-14

申请号：US11643851

申请日：2006-12-22

申请人： Shui-Mu Lin ,  Nien-Hui Kung ,  Jien-Sheng Chen ,  Tsung-Wei Huang

发明人： Shui-Mu Lin ,  Nien-Hui Kung ,  Jien-Sheng Chen ,  Tsung-Wei Huang

IPC分类号： G05F1/10

CPC分类号： H02M3/07

摘要： A low noise multiphase charge pump comprises a plurality of capacitors and a plurality of switches configured as a network, the switches are so switched that the charge pump operates in at least three phases by turns, and the operational durations and the operational currents of the phases are preferably balanced, so as to reduce the noise of the charge pump.

摘要翻译： 低噪声多相电荷泵包括多个电容器和被配置为网络的多个开关，开关被切换，使得电荷泵至少在三相中工作，并且各相的工作持续时间和工作电流 优选地是平衡的，以便降低电荷泵的噪声。

公开(公告)号：US20070152737A1

公开(公告)日：2007-07-05

申请号：US11643851

申请日：2006-12-22

申请人： Shui-Mu Lin ,  Nien-Hui Kung ,  Jien-Sheng Chen ,  Tsung-Wei Huang

发明人： Shui-Mu Lin ,  Nien-Hui Kung ,  Jien-Sheng Chen ,  Tsung-Wei Huang

IPC分类号： G05F1/10

CPC分类号： H02M3/07

摘要： A low noise multiphase charge pump comprises a plurality of capacitors and a plurality of switches configured as a network, the switches are so switched that the charge pump operates in at least three phases by turns, and the operational durations and the operational currents of the phases are preferably balanced, so as to reduce the noise of the charge pump.

摘要翻译： 低噪声多相电荷泵包括多个电容器和被配置为网络的多个开关，开关被切换，使得电荷泵至少在三相中工作，并且各相的工作持续时间和工作电流 优选地是平衡的，以便降低电荷泵的噪声。

公开(公告)号：US20150156829A1

公开(公告)日：2015-06-04

申请号：US14539082

申请日：2014-11-12

申请人： Shui-Mu Lin ,  Chien-Hua Lin ,  Ching-Yu Chen ,  Chin-Hui Wang ,  Yung-Chun Chuang ,  Ti-Ti Liu

发明人： Shui-Mu Lin ,  Chien-Hua Lin ,  Ching-Yu Chen ,  Chin-Hui Wang ,  Yung-Chun Chuang ,  Ti-Ti Liu

IPC分类号： H05B33/08

CPC分类号： H05B33/083 ,  G09G3/3216 ,  G09G2320/0209 ,  G09G2320/0233 ,  H05B33/0827

摘要： The present invention discloses a light emitting device array billboard and a control method thereof. The light emitting device array billboard includes a light emitting device array circuit, plural line switch circuits, plural channel switch circuits, plural ghost image compensation switch circuits, and a control circuit. The control circuit operates the line switch circuits and the channel switch circuit to turn ON a selected light emitting device for a duty period in a lighting period, and operates the plural ghost image compensation switch circuits to electrically connect a channel node corresponding to the selected light emitting device to a ghost image compensation voltage after the lighting period. The control circuit further adjusts a channel operation signal according to a gray scale compensation signal, to turn ON the selected light emitting device for a gray scale compensation period in addition to the duty period.

摘要翻译： 本发明公开了一种发光装置阵列广告牌及其控制方法。 发光器件阵列广告牌包括发光器件阵列电路，多个线路开关电路，多个通道开关电路，多个重影图像补偿开关电路和控制电路。 控制电路操作线路开关电路和通道开关电路，以在点亮周期内接通所选择的发光器件占空比，并且操作多个重影图像补偿开关电路以电连接对应于所选择的光的通道节点 发光装置在发光周期之后的重影图像补偿电压。 控制电路根据灰度补偿信号进一步调整通道操作信号，除了占空比周期之外，还使所选择的发光器件接通灰度补偿期间。