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    • 1. 发明授权
    • Power supply device and method of controlling the same by using an adjustable power factor corrector
    • 电源装置及其可调功率因数校正器的控制方法
    • US08867239B2
    • 2014-10-21
    • US12534972
    • 2009-08-04
    • Sung-yong JooHyo-soon Choi
    • Sung-yong JooHyo-soon Choi
    • H02M7/68H02M1/42H02M1/36H02M3/335
    • H02M3/33523H02M1/36H02M1/4208Y02B70/126Y10T307/615
    • Provided are a power supply device and a method of controlling the same. The power supply device includes: a power factor corrector which corrects a power factor of an initial power; a standby power supply unit which is connected to the power factor corrector, the standby power supply unit including a transformer which converts an input power received from the power factor corrector; a sensor which detects a level of an induced power corresponding to the input power; and a power supply controller which determines whether the level of the induced power exceeds a critical value, activates the power factor corrector to correct the power factor of the initial power if the level of the induced power exceeds the critical value, and supplies a driving power to the system based on the level of the induced power.
    • 提供一种电源装置及其控制方法。 电源装置包括:功率因数校正器,其校正初始功率的功率因数; 备用电源单元,连接到所述功率因数校正器,所述备用电源单元包括变换器,所述变压器转换从所述功率因数校正器接收的输入功率; 传感器,其检测与所述输入功率相对应的感应功率的电平; 以及电源控制器,其确定感应功率的电平是否超过临界值,如果感应功率的电平超过临界值,则激活功率因数校正器来校正初始功率的功率因数,并且提供驱动功率 以系统为基础的感应功率水平。
    • 7. 发明申请
    • APPARATUS AND METHOD FOR CONTROLLING LED DRIVING CIRCUIT AND APPARATUS AND METHOD FOR DRIVING LED
    • 用于控制LED驱动电路的装置和方法及其驱动LED的方法
    • US20130033194A1
    • 2013-02-07
    • US13449037
    • 2012-04-17
    • Jeong-il KANGHyo-soon CHOI
    • Jeong-il KANGHyo-soon CHOI
    • H05B37/02
    • H05B33/0818H05B33/0848Y02B20/347
    • An apparatus for driving a light-emitting diode (LED) is provided. The apparatus includes an LED, a voltage sensing unit which senses a voltage applied to the LED, a current sensing unit which senses a current flowing into the LED, a DC-to-DC converter which converts an input voltage into an LED driving voltage and provides the LED driving voltage to the LED, an LED driving unit which drives the LED according to a dimming-on signal and a dimming-off signal; and a control unit which controls the DC-to-DC converter such that the current sensed by the current sensor follows a reference current, if the dimming-on signal is received, and controls the DC-to-DC converter to maintain the voltage sensed by the voltage sensor at a same voltage as a voltage of the LED at a dimming-off time, if the dimming-off signal is received.
    • 提供一种用于驱动发光二极管(LED)的装置。 该装置包括LED,感测施加到LED的电压的电压感测单元,感测流入LED的电流的电流感测单元,将输入电压转换为LED驱动电压的DC-DC转换器,以及 向LED提供LED驱动电压,LED驱动单元,其根据调光开启信号和调光信号驱动LED; 以及控制单元,其控制DC-DC转换器,使得由电流传感器感测的电流跟随参考电流,如果接收到调光接通信号,并且控制DC-DC转换器以维持感测到的电压 如果接收到调光关闭信号,则电压传感器在与调光关闭时间的LED的电压相同的电压下。
    • 8. 发明申请
    • LUMINESCENCE DRIVING APPARATUS, DISPLAY APPARATUS, AND DRIVING METHOD THEREOF
    • 发光装置,显示装置及其驱动方法
    • US20120049740A1
    • 2012-03-01
    • US13053754
    • 2011-03-22
    • Jeong-il KANGGil-yong CHANGYoung-deok CHOIHyo-soon CHOI
    • Jeong-il KANGGil-yong CHANGYoung-deok CHOIHyo-soon CHOI
    • H05B37/03H05B37/02
    • H05B33/089Y02B20/341
    • A luminescence driving apparatus, a display apparatus, and a driving method thereof are provided. The luminescence driving apparatus drives a plurality of light-emitting units and includes: a voltage sensor which senses internal voltages of the plurality of light-emitting units; a current sensor which senses internal currents of the plurality of light-emitting units; a sensing signal generator which receives the internal voltages of the plurality of light-emitting units from the voltage sensor to generate an overvoltage sensing signal; a controller which, if it is determined that an overvoltage state has occurred, according to a level of the overvoltage sensing signal, searches for at least one of the plurality of light-emitting units in which the overvoltage state has occurred, according to levels of the internal currents sensed by the current sensor; and a protector which performs an overvoltage protection (OVP) operation with respect to the searched light-emitting unit.
    • 提供了发光驱动装置,显示装置及其驱动方法。 发光驱动装置驱动多个发光单元,包括:感测多个发光单元的内部电压的电压传感器; 感测多个发光单元的内部电流的电流传感器; 感测信号发生器,其从所述电压传感器接收所述多个发光单元的内部电压,以产生过电压感测信号; 控制器,如果根据过电压感测信号的电平确定已经发生过电压状态,则根据其中发生过电压状态的多个发光单元中的至少一个,根据 由电流传感器感测的内部电流; 以及对搜索到的发光单元执行过电压保护(OVP)操作的保护器。