公开(公告)号：US20110285323A1

公开(公告)日：2011-11-24

申请号：US13117795

申请日：2011-05-27

Applicant: Ching-Chuan KUO ,  Yung-Lin LIN

Inventor： Ching-Chuan KUO ,  Yung-Lin LIN

IPC: H05B37/02

CPC classification number: H05B33/0815 ,  Y02B20/346 ,  Y02B20/348

Abstract: A dimming controller for controlling dimming of a light-emitting diode (LED) light source includes a monitoring terminal and a control terminal. The monitoring terminal receives a switch monitoring signal indicative of an operation of a power switch which transfers power from an AC power source to a bridge rectifier when the power switch is on. A power converter receives input power from the bridge rectifier and provides output power to the LED light source. The control terminal generates a control signal to adjust the output power according to the switch monitoring signal so as to control dimming of the LED light source.

Abstract translation: 用于控制发光二极管（LED）光源的调光的调光控制器包括监视终端和控制终端。 当电源开关接通时，监控终端接收指示电力开关操作的开关监视信号，该功率开关从AC电源向桥式整流器传送电能。 功率转换器从桥式整流器接收输入功率并向LED光源提供输出功率。 控制端产生控制信号，根据开关监视信号调节输出功率，以控制LED光源的调光。

公开(公告)号：US20130069546A1

公开(公告)日：2013-03-21

申请号：US13424331

申请日：2012-03-19

Applicant: Yung-Lin LIN ,  Ching-Chuan KUO

Inventor： Yung-Lin LIN ,  Ching-Chuan KUO

IPC: H05B37/02

CPC classification number: H05B33/0812 ,  H05B33/0824 ,  Y02B20/343 ,  Y02B20/345

Abstract: A controller controls power to a light source. The light source receives a rectified AC voltage and includes a first plurality of LEDs and a second plurality of LEDs. The controller regulates a current flowing through the first plurality of LEDs to a first predetermined level when the rectified AC voltage is within a first predetermined range. The second plurality of LEDs remain off when the rectified AC voltage is within the first predetermined range.

Abstract translation: 控制器控制光源的电源。 光源接收经整流的交流电压，并包括第一多个LED和第二多个LED。 当整流的AC电压处于第一预定范围内时，控制器将流过第一多个LED的电流调节到第一预定电平。 当整流的AC电压处于第一预定范围内时，第二组LED保持关闭。

公开(公告)号：US20120262079A1

公开(公告)日：2012-10-18

申请号：US13530935

申请日：2012-06-22

Applicant: Yung-Lin LIN ,  Ching-Chuan KUO

Inventor： Yung-Lin LIN ,  Ching-Chuan KUO

IPC: H05B37/02

CPC classification number: H05B33/0815

Abstract: A circuit for powering a light source includes a filter, a transformer, and a controller. The filter receives an input voltage and filters the input voltage to provide a regulated voltage. The transformer converts the regulated voltage to an output voltage to power the light source. The controller generates a driving signal to alternately operate the switch between a first state and a second state. The controller corrects a power factor of the circuit by controlling time durations of the first state and the second state, such that an input current decreases to a predetermined level during the second state and increases from the predetermined level to a peak level proportional to the input voltage during the first state. The controller controls the ratio of time in the first state to time in the second state to adjust an output current flowing through the light source to a target level.

Abstract translation: 用于为光源供电的电路包括滤波器，变压器和控制器。 滤波器接收输入电压并对输入电压进行滤波以提供调节电压。 变压器将调节电压转换为输出电压，为光源供电。 控制器产生驱动信号以在第一状态和第二状态之间交替地操作开关。 控制器通过控制第一状态和第二状态的持续时间来校正电路的功率因数，使得输入电流在第二状态期间降低到预定电平并且从预定电平增加到与输入成比例的峰值电平 在第一状态下的电压。 控制器控制第二状态下的第一状态到时间的时间比，以将流过光源的输出电流调节到目标电平。

公开(公告)号：US20090225020A1

公开(公告)日：2009-09-10

申请号：US12075021

申请日：2008-03-07

Applicant: Kaiping RAN ,  Da LIU ,  Yung-Lin LIN

Inventor： Kaiping RAN ,  Da LIU ,  Yung-Lin LIN

IPC: G09G3/36 ,  H05B37/02

CPC classification number: H05B33/0851 ,  G09G3/3406 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2320/0633 ,  G09G2320/064 ,  G09G2330/06 ,  H05B33/0818 ,  H05B33/0827 ,  Y02B20/346

Abstract: A backlight controller for driving a plurality of light source strings includes a feedback circuitry, a phase array circuitry, and an encoder circuitry. The feedback circuitry is coupled to the plurality of light source strings and generates a plurality of feedback signals indicative of a plurality of currents flowing through the plurality of light source strings respectively. The phase array circuitry receives a dimming control signal and receives a code signal indicative of a total number of operative light source strings among the plurality of light source strings, and generates a plurality of phase shift signals according to the code signal and the dimming control signal. The encoder circuitry is coupled to the phase array circuitry and receives the plurality of phase shift signals and the plurality of feedback signals, and generates a plurality of pulse width modulation signals to respectively control the operative light source strings.

Abstract translation: 用于驱动多个光源串的背光控制器包括反馈电路，相位阵列电路和编码器电路。 反馈电路耦合到多个光源串，并且产生分别表示流过多个光源串的多个电流的多个反馈信号。 相位阵列电路接收调光控制信号并接收指示多个光源串中的操作光源串的总数的代码信号，并根据代码信号和调光控制信号产生多个相移信号 。 编码器电路耦合到相位阵列电路并且接收多个相移信号和多个反馈信号，并且产生多个脉冲宽度调制信号以分别控制操作光源串。