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1. 发明授权

US07394444B2 LED driver 有权
标题翻译： LED驱动器
公开(公告)号：US07394444B2
公开(公告)日：2008-07-01
申请号：US11262807
申请日：2005-11-01
申请人： Nam-in Kim , Jeong-il Kang , Joon-hyun Yang
发明人： Nam-in Kim , Jeong-il Kang , Joon-hyun Yang
IPC分类号： G09G3/36
CPC分类号： H05B33/0812 , H05B33/0815 , H05B33/0818 , H05B33/0851 , Y02B20/343
摘要： The present invention relates to an LED driver for driving light emitting diodes. The LED driver comprises a linear mode driver to increase and decrease a linear mode current to make a current flow in the LED at a predetermined target current value and output it to the LED; and a switch mode driver to increase and decrease a switch mode current depending on whether the linear mode current exceeds a predetermined reference current value and output it to the LED. Thus, the present invention provides an LED driver having high power efficiency and light efficiency and minimal distortions of a driving current.
摘要翻译：本发明涉及用于驱动发光二极管的LED驱动器。 LED驱动器包括线性模式驱动器，用于增加和减少线性模式电流，以使电流在LED中以预定的目标电流值流动并将其输出到LED; 以及开关模式驱动器，用于根据线性模式电流是否超过预定的参考电流值来增加和减少开关模式电流，并将其输出到LED。因此，本发明提供了具有高功率效率和光效率以及驱动电流的最小失真的LED驱动器。

2. 发明申请

US20070273446A1 Automatic input-gain control circuit and method thereof 审中-公开
标题翻译：自动输入增益控制电路及其方法
公开(公告)号：US20070273446A1
公开(公告)日：2007-11-29
申请号：US11723016
申请日：2007-03-15
申请人： Nam-in Kim , Yun-yong Kim , Sung-woo Kim
发明人： Nam-in Kim , Yun-yong Kim , Sung-woo Kim
IPC分类号： H03G3/20 , H03G3/00
CPC分类号： H03G7/004 , H03F3/2171 , H03G11/002
摘要： An automatic input-gain control circuit of an audio amplifier and a method thereof are provided. If an acoustic signal exceeds a dynamic range, a gain of the acoustic signal can be automatically attenuated based on a pre-set limit level to minimize a distortion of the acoustic signal caused by clipping of the acoustic signal and limit an over-input so as to input the acoustic signal within the dynamic range. Thus, an original form of an over-input signal on a specific level or more can be maintained but only a gain of the over-input signal can be attenuated. As a result, a distortion of an output waveform caused by clipping of the output waveform can be minimized, and a harmonic distortion and a stepped high frequency noise occurring during clipping can be simultaneously removed.
摘要翻译：提供了一种音频放大器的自动输入增益控制电路及其方法。如果声信号超过动态范围，则声信号的增益可以基于预设极限电平自动衰减，以使由声音信号的限幅引起的声信号的失真最小化，并限制过输入，以便以在动态范围内输入声信号。因此，可以保持特定电平以上的过输入信号的原始形式，但是可以仅衰减过输入信号的增益。结果，可以使由输出波形的削波引起的输出波形的失真最小化，并且可以同时去除在限幅期间发生的谐波失真和阶跃式高频噪声。

3. 发明申请

US20060192728A1 LED driver 失效
标题翻译： LED驱动器
公开(公告)号：US20060192728A1
公开(公告)日：2006-08-31
申请号：US11263019
申请日：2005-11-01
申请人： Nam-in Kim
发明人： Nam-in Kim
IPC分类号： G09G3/14
CPC分类号： G09G3/3413 , G09G2320/064 , H04N9/3114 , H04N9/3155 , H05B33/0815 , H05B33/0818 , H05B33/086 , Y02B20/347
摘要： The present invention relates to an LED driver for driving a plurality of light emitting diodes (LEDs), comprising a current controller to control power supply of a predetermined power source unit to make a current flowing in the plurality of LEDs reach a predetermined target current value which sequentially changes corresponding to the respective LEDs; a plurality of divergence switches to flow or interrupt the current with respect to each of the plurality of LEDs; a bypass switch being connected in parallel with respect to the plurality of divergence switches and the plurality of LEDs and to flow or bypass the current supplied to the plurality of LEDs by being open or short-circuited; and a switch controller to sequentially open and close the plurality of divergence switches corresponding to change of the target current value and control the bypass switch to be short-circuited in a range where the current supplied to the LEDs increases, corresponding to the rise of the target current value. Thus, the present invention provides an LED driver which drives an LED in a low voltage to improve light efficiency.
摘要翻译：本发明涉及用于驱动多个发光二极管（LED）的LED驱动器，其包括电流控制器，用于控制预定电源单元的电力供应，以使在多个LED中流动的电流达到预定的目标电流值其相应地对应于各个LED; 多个发散开关，以相对于所述多个LED中的每一个流动或中断电流; 旁路开关相对于所述多个发散开关和所述多个LED并联连接，并且通过断开或短路来流动或旁路供给所述多个LED的电流; 以及开关控制器，其对应于目标电流值的变化顺序地打开和关闭多个发散开关，并且在提供给LED的电流增加的范围内控制旁路开关短路，对应于目标值。因此，本发明提供一种LED驱动器，其驱动低电压的LED以提高光效率。

4. 发明申请

US20060181485A1 LED driver 有权
标题翻译： LED驱动器
公开(公告)号：US20060181485A1
公开(公告)日：2006-08-17
申请号：US11262807
申请日：2005-11-01
申请人： Nam-in Kim , Jeong-il Kang , Joon-hyun Yang
发明人： Nam-in Kim , Jeong-il Kang , Joon-hyun Yang
IPC分类号： G09G3/14
CPC分类号： H05B33/0812 , H05B33/0815 , H05B33/0818 , H05B33/0851 , Y02B20/343
摘要： The present invention relates to an LED driver for driving light emitting diodes. The LED driver comprises a linear mode driver to increase and decrease a linear mode current to make a current flow in the LED at a predetermined target current value and output it to the LED; and a switch mode driver to increase and decrease a switch mode current depending on whether the linear mode current exceeds a predetermined reference current value and output it to the LED. Thus, the present invention provides an LED driver having high power efficiency and light efficiency and minimal distortions of a driving current.
摘要翻译：本发明涉及用于驱动发光二极管的LED驱动器。 LED驱动器包括线性模式驱动器，用于增加和减少线性模式电流，以使电流在LED中以预定的目标电流值流动并将其输出到LED; 以及开关模式驱动器，用于根据线性模式电流是否超过预定的参考电流值来增加和减少开关模式电流，并将其输出到LED。因此，本发明提供了具有高功率效率和光效率以及驱动电流的最小失真的LED驱动器。

5. 发明授权

US07728798B2 LED driver 失效
标题翻译： LED驱动器
公开(公告)号：US07728798B2
公开(公告)日：2010-06-01
申请号：US11263019
申请日：2005-11-01
申请人： Nam-in Kim
发明人： Nam-in Kim
IPC分类号： G09G3/32
CPC分类号： G09G3/3413 , G09G2320/064 , H04N9/3114 , H04N9/3155 , H05B33/0815 , H05B33/0818 , H05B33/086 , Y02B20/347
摘要： The present invention relates to an LED driver for driving a plurality of light emitting diodes (LEDs), comprising a current controller to control power supply of a predetermined power source unit to make a current flowing in the plurality of LEDs reach a predetermined target current value which sequentially changes corresponding to the respective LEDs; a plurality of divergence switches to flow or interrupt the current with respect to each of the plurality of LEDs; a bypass switch being connected in parallel with respect to the plurality of divergence switches and the plurality of LEDs and to flow or bypass the current supplied to the plurality of LEDs by being open or short-circuited; and a switch controller to sequentially open and close the plurality of divergence switches corresponding to change of the target current value and control the bypass switch to be short-circuited in a range where the current supplied to the LEDs increases, corresponding to the rise of the target current value. Thus, the present invention provides an LED driver which drives an LED in a low voltage to improve light efficiency.
摘要翻译：本发明涉及用于驱动多个发光二极管（LED）的LED驱动器，其包括电流控制器，用于控制预定电源单元的电力供应，以使在多个LED中流动的电流达到预定的目标电流值其相应地对应于各个LED; 多个发散开关，以相对于所述多个LED中的每一个流动或中断电流; 旁路开关相对于所述多个发散开关和所述多个LED并联连接，并且通过断开或短路来流动或旁路供给所述多个LED的电流; 以及开关控制器，其对应于目标电流值的变化顺序地打开和关闭多个发散开关，并且在提供给LED的电流增加的范围内控制旁路开关短路，对应于目标值。因此，本发明提供一种LED驱动器，其驱动低电压的LED以提高光效率。

6. 发明申请

US20070285160A1 Input-gain control apparatus and method 审中-公开
标题翻译：输入增益控制装置及方法
公开(公告)号：US20070285160A1
公开(公告)日：2007-12-13
申请号：US11723249
申请日：2007-03-19
申请人： Nam-in Kim , Yun-yong Kim , Sung-woo Kim
发明人： Nam-in Kim , Yun-yong Kim , Sung-woo Kim
IPC分类号： H03G3/20
CPC分类号： H03G3/3026 , H03G7/001 , H03G11/002
摘要： Provided are input-gain control apparatus and method of an audio amplifier. A gain of an acoustic signal is automatically attenuated based on a pre-set limited level to minimize distortion of the acoustic signal caused by clipping of the acoustic signal, and thereby limit an over-input of the acoustic signal to input the acoustic signal within a dynamic range if the acoustic signal is not input within the dynamic range in an audio apparatus including an acoustic amplifier and a switching amplifier. Thus, only a gain of an over-input signal on a specific level or more can be attenuated while an original form of the over-input signal is maintained to minimize distortion of an output waveform caused by clipping of the output waveform. Also, a harmonic distortion and a stepped high frequency noise occurring during clipping can be simultaneously removed.
摘要翻译：提供了音频放大器的输入增益控制装置和方法。声信号的增益将基于预设的限制级别而自动衰减，以最小化由声音信号的限幅引起的声信号的失真，从而限制声信号的过度输入以将声信号输入到如果声音信号在包括声学放大器和开关放大器的音频装置的动态范围内没有输入，则动态范围。因此，只有在特定电平以上的过输入信号的增益才能衰减，同时维持过输入信号的原始形式，以最小化由输出波形的削波引起的输出波形的失真。此外，可以同时去除在剪切期间发生的谐波失真和阶跃式高频噪声。

7. 发明申请

US20060197469A1 Light emitting diode (LED) driver 审中-公开
标题翻译：发光二极管（LED）驱动器
公开(公告)号：US20060197469A1
公开(公告)日：2006-09-07
申请号：US11336986
申请日：2006-01-23
申请人： Nam-in Kim
发明人： Nam-in Kim
IPC分类号： H05B41/36
CPC分类号： H05B33/0815 , H05B33/0818 , H05B33/086 , Y02B20/347
摘要： An LED driver is provided for driving a plurality of light emitting diodes (LEDs), having a current controller to control a power supply of a predetermined power source unit to establish a current in the plurality of LEDs at a predetermined target current value and which sequentially changes corresponding to the respective LEDs, a plurality of divergence switches to allow flow or interrupt flow of the current with respect to each of the plurality of LEDs, and a divergence switch controller to sequentially open and close the plurality of divergence switches corresponding to changes of the target current value to make one of the plurality of divergence switches turn on before another one of the plurality of divergence switches is turned off. Thus, the LED driver has high light efficiency and excellent circuit stability without electromagnetic interference (EMI).
摘要翻译：提供一种用于驱动多个发光二极管（LED）的LED驱动器，其具有电流控制器以控制预定电源单元的电力供应，以预定的目标电流值建立多个LED中的电流，并且依次对应于各个LED的变化，多个发散开关，以允许电流相对于多个LED中的每一个流动或中断流动;以及发散开关控制器，以顺序地打开和关闭多个发散开关，使多个发散开关中的一个发散开关的目标电流值在多个发散开关中的另一个之间断开时接通。因此，LED驱动器具有高的光效率和优异的电路稳定性，而没有电磁干扰（EMI）。

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