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    • 1. 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。
    • 2. 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。
    • 6. 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
    • US20120062148A1
    • 2012-03-15
    • US13053984
    • 2011-03-22
    • Tae-sung KIMJeong-il KANG
    • Tae-sung KIMJeong-il KANG
    • H05B37/02
    • H05B33/0884H05B33/0815H05B33/0824Y02B20/341Y02B20/346
    • A luminescence driving apparatus, a display apparatus, and a driving method thereof are provided. The luminescence driving apparatus includes: a driving circuit which is connected to a light-emitting device and drives the light-emitting device according to a control pulse having a fluctuating amplitude; a controller which, if an internal current of the light-emitting device is less than or equal to a threshold value, selects a position from among a plurality of different positions of the driving circuit based on the amplitude of the control pulse, senses a voltage at the selected position and determines whether a short-circuit has occurred between the light-emitting device and the driving circuit using a level of the sensed voltage; and a protector which if it is determined that the short-circuit has occurred, performs a protection operation with respect to the light-emitting device.
    • 提供了发光驱动装置,显示装置及其驱动方法。 发光驱动装置包括:驱动电路,其连接到发光装置,并根据具有波动幅度的控制脉冲驱动发光装置; 控制器,如果发光装置的内部电流小于或等于阈值,则基于所述控制脉冲的振幅从所述驱动电路的多个不同位置中选择位置,以感测所述驱动电路的电压 在所选择的位置,使用感测电压的电平来确定在发光装置和驱动电路之间是否发生短路; 以及保护器,如果确定发生短路,则对发光装置执行保护操作。
    • 8. 发明申请
    • POWER SUPPLY DEVICE FOR LUMINOUS ELEMENT AND METHOD THEREOF
    • 用于灯泡元件的电源装置及其方法
    • US20080164829A1
    • 2008-07-10
    • US11773597
    • 2007-07-05
    • Sang-hoon LEEJeong-il KANG
    • Sang-hoon LEEJeong-il KANG
    • H05B41/36
    • H05B33/0845
    • A power supply device for a luminous element and a method thereof are provided. The power supply device includes an output calculation unit for calculating a brightness level of the luminous element, a current command signal generation unit for generating a current command signal so that a current value being supplied to the luminous element is adjusted by stages, and a constant current source for adjusting by stages the current being supplied to the luminous element according to the current command signal. According to the power supply device, the ascending period and the descending period can be shortened, and light output characteristics can be improved by improving the transient characteristic through an adaptive adjustment of current in the ascending period and the descending period.
    • 提供了一种用于发光元件的电源装置及其方法。 电源装置包括用于计算发光元件的亮度电平的输出计算单元,用于产生电流指令信号的电流指令信号生成单元,使得提供给发光元件的电流值被分阶段地调节,并且恒定 电流源,用于根据电流指令信号逐级调节供应给发光元件的电流。 根据供电装置,可以缩短上升周期和下降周期,并且可以通过在上升周期和下降周期中的电流的自适应调整来改善瞬态特性来提高光输出特性。
    • 9. 发明申请
    • DISPLAY APPARATUS WITH BACKLIGHT DRIVING CIRCUIT AND CONTROL METHOD THEREOF
    • 具有背光驱动电路的显示装置及其控制方法
    • US20120162279A1
    • 2012-06-28
    • US13244307
    • 2011-09-24
    • Tae-sung KIMYong-joo LEEJeong-il KANG
    • Tae-sung KIMYong-joo LEEJeong-il KANG
    • G09G5/10
    • G09G3/3406G09G2330/04
    • A display apparatus and a control method thereof are disclosed. The display apparatus includes a signal processor which processes a video signal; a display which displays an image based on the video signal processed by the signal processor, a light source providing light for displaying the image; and a driving circuit which drives the light source on the basis of a dimming signal having an on-section and an off-section for dimming the light source. The driving circuit includes a protection circuit for performing a protection operation as a result of an abnormal electric current flowing in the light source during the off-section. The display apparatus is protected when a short circuit occurs between the light source and the driving circuit, thereby enhancing the stability and reliability of the apparatus.
    • 公开了一种显示装置及其控制方法。 显示装置包括处理视频信号的信号处理器; 基于由信号处理器处理的视频信号显示图像的显示器,提供用于显示图像的光的光源; 以及驱动电路,其基于具有用于使光源调光的截面和截止部分的调光信号驱动光源。 驱动电路包括保护电路,用于在断开期间由于在光源中流动的异常电流而执行保护操作。 当在光源和驱动电路之间发生短路时,显示装置被保护,从而提高了装置的稳定性和可靠性。