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    • 1. 发明授权
    • LED driving apparatus and method
    • LED驱动装置及方法
    • US08890431B2
    • 2014-11-18
    • US13220041
    • 2011-08-29
    • Change Seok LeeYeun Joong LeeDeuk Hee ParkSang Hyun ChaJae Shin Lee
    • Change Seok LeeYeun Joong LeeDeuk Hee ParkSang Hyun ChaJae Shin Lee
    • H05B37/02H05B33/08
    • H05B33/0815
    • There are provided an LED driving apparatus and an LED driving method thereof. The LED driving apparatus includes: a light emitting unit including one or more LEDs, a rectifying unit rectifying an input signal to generate a first signal; a signal conversion unit inverting a waveform of a first signal to generate a second signal; and an operation unit arithmetically operating the first and second signals. A plurality of AC signals each having a different waveform are arithmetically operated to generate a signal having a small amount of a ripple component, and an LED is driven by the signal, thus preventing a lifespan of the LED from being shortened by omitting a smoothing electrolytic capacitor, one of main causes shortening the lifespan of an LED driving circuit.
    • 提供了LED驱动装置及其LED驱动方法。 LED驱动装置包括:发光单元,包括一个或多个LED;整流单元对输入信号进行整流以产生第一信号; 信号转换单元,反转第一信号的波形以产生第二信号; 以及操作单元,算术地操作第一和第二信号。 每个具有不同波形的多个AC信号被算术运算以产生具有少量纹波分量的信号,并且由信号驱动LED,从而通过省略平滑电解而防止LED的寿命缩短 电容器,主要原因之一是缩短了LED驱动电路的使用寿命。
    • 4. 发明授权
    • LED circuit
    • LED电路
    • US08749147B2
    • 2014-06-10
    • US13224083
    • 2011-09-01
    • Yeun Joong LeeDeuk Hee ParkSang Hyun ChaJae Shin LeeChange Seok Lee
    • Yeun Joong LeeDeuk Hee ParkSang Hyun ChaJae Shin LeeChange Seok Lee
    • H05B37/00H05B37/02
    • H05B33/0809H05B33/0824
    • There is provided an LED circuit. The LED circuit may include 2N+2 light emitting units connected between a 2K−1-th node and a 2K-th node among 4N+4 (N is a natural number) nodes including a first node supplied with input voltage (K is all natural numbers equal to or smaller than 2N+2); 2N+2 switches connected between a 2K-th node and a ground (K is all natural numbers equal to or smaller than 2N+2); 2N+1 switches connected between a 2L−1-th node and a 2L+1-th node and 2N+1 switches connected between a 2L-th node and a 2L+1-th node (L is all natural numbers equal to or smaller than 2N+1); and N switches connected between the first node and a 4M+1-th node (M is all natural numbers equal to or smaller than N).
    • 提供了一个LED电路。 LED电路可以包括连接在4N + 4(N是自然数)节点之间的第2K-1节点和第2K节点之间的2N + 2个发光单元,包括提供有输入电压的第一节点(K全为 等于或小于2N + 2的自然数); 连接在第2K节点和地之间的2N + 2个开关(K是等于或小于2N + 2的自然数); 连接在第2L-1节点和第2L + 1节点之间的2N + 1个开关和连接在第2L节点和第2L + 1节点之间的2N + 1个开关(L等于或等于 小于2N + 1); 和连接在第一节点与第4M + 1节点之间的N个交换机(M等于或小于N的自然数)。
    • 5. 发明申请
    • LED CIRCUIT
    • LED电路
    • US20120299490A1
    • 2012-11-29
    • US13224083
    • 2011-09-01
    • Yeun Joong LEEDeuk Hee ParkSang Hyun ChaJae Shin LeeChange Seok Lee
    • Yeun Joong LEEDeuk Hee ParkSang Hyun ChaJae Shin LeeChange Seok Lee
    • H05B37/02
    • H05B33/0809H05B33/0824
    • There is provided an LED circuit. The LED circuit may include 2N+2 light emitting units connected between a 2K−1-th node and a 2K-th node among 4N+4 (N is a natural number) nodes including a first node supplied with input voltage (K is all natural numbers equal to or smaller than 2N+2); 2N+2 switches connected between a 2K-th node and a ground (K is all natural numbers equal to or smaller than 2N+2); 2N+1 switches connected between a 2L−1-th node and a 2L+1-th node and 2N+1 switches connected between a 2L-th node and a 2L+1-th node (L is all natural numbers equal to or smaller than 2N+1); and N switches connected between the first node and a 4M+1-th node (M is all natural numbers equal to or smaller than N).
    • 提供了一个LED电路。 LED电路可以包括连接在4N + 4(N是自然数)节点之间的第2K-1节点和第2K节点之间的2N + 2个发光单元,包括提供有输入电压的第一节点(K全为 等于或小于2N + 2的自然数); 连接在第2K节点和地之间的2N + 2个开关(K是等于或小于2N + 2的自然数); 连接在第2L-1节点和第2L + 1节点之间的2N + 1个开关和连接在第2L节点和第2L + 1节点之间的2N + 1个开关(L等于或等于 小于2N + 1); 和连接在第一节点与第4M + 1节点之间的N个交换机(M等于或小于N的自然数)。
    • 10. 发明申请
    • LIGHT EMITTING DIODE DRIVING APPARATUS
    • 发光二极管驱动装置
    • US20130257305A1
    • 2013-10-03
    • US13524663
    • 2012-06-15
    • Yeun Joong LEEDeuk Hee ParkSang Hyun ChaChang Seok Lee
    • Yeun Joong LEEDeuk Hee ParkSang Hyun ChaChang Seok Lee
    • H05B37/02
    • H05B33/0815
    • There is provided a light emitting diode driving apparatus satisfying regulations for current transferred to a light emitting diode. The light emitting diode driving apparatus includes: a power supplying unit receiving input power to convert the input power into a preset driving power and supplying the driving power to a light emitting diode unit including at least one light emitting diode; a detecting unit receiving the driving power supplied to the light emitting diode unit to detect voltage flowing in the light emitting diode unit; a controlling unit comparing detection voltage detected by the detecting unit with a preset reference voltage to control a power conversion operation of the power supplying unit; and a driving unit driving the power conversion operation according to controlling by the controlling unit.
    • 提供了满足对传输到发光二极管的电流的规定的发光二极管驱动装置。 发光二极管驱动装置包括:供电单元,其接收输入功率以将输入功率转换为预设驱动功率,并将驱动功率提供给包括至少一个发光二极管的发光二极管单元; 接收提供给所述发光二极管单元的驱动电力以检测在所述发光二极管单元中流动的电压的检测单元; 将由所述检测单元检测出的检测电压与预先设定的基准电压进行比较的控制单元,对所述供电单元的电力变换动作进行控制; 以及驱动单元,其根据控制单元的控制驱动电力转换操作。