公开(公告)号：US09055640B2

公开(公告)日：2015-06-09

申请号：US13494543

申请日：2012-06-12

申请人： Jung Eui Park ,  Bo Hyun Hwang ,  Seo Hyung Kim ,  Jae Shin Lee ,  Dae Hoon Han ,  Seung Kon Kong

发明人： Jung Eui Park ,  Bo Hyun Hwang ,  Seo Hyung Kim ,  Jae Shin Lee ,  Dae Hoon Han ,  Seung Kon Kong

IPC分类号： H05B33/08

CPC分类号： H05B33/0827

摘要： There is provided a light emitting diode driving apparatus capable of uniformly maintaining current balance between light emitting diode channels. The light emitting diode driving apparatus includes: a DC to DC converting unit converting the direct current power into settable driving power; a detecting unit detecting voltage drops generated in each of a plurality of light emitting diode channels each having a plurality of light emitting diodes; a converting unit converting an analog value into a digital value; and a driving unit differentially setting duty cycles of switching signals according to the digital values from the converting unit to drive the plurality of light emitting diode channels.

摘要翻译： 提供了能够均匀地保持发光二极管通道之间的电流平衡的发光二极管驱动装置。 发光二极管驱动装置包括：直流/直流转换单元，将直流电转换成可设定的驱动电力; 检测单元，检测在每个具有多个发光二极管的多个发光二极管通道中的每一个中产生的电压降; 转换单元，将模拟值转换为数字值; 以及驱动单元，根据来自转换单元的数字值差分地设置开关信号的占空比，以驱动多个发光二极管通道。

公开(公告)号：US20120068738A1

公开(公告)日：2012-03-22

申请号：US13027689

申请日：2011-02-15

申请人： Joon Youp SUNG ,  Jung Sun KWON ,  Jae Shin LEE ,  Seung Kon KONG ,  Jung Hyun KIM ,  Bo Hyun HWANG

发明人： Joon Youp SUNG ,  Jung Sun KWON ,  Jae Shin LEE ,  Seung Kon KONG ,  Jung Hyun KIM ,  Bo Hyun HWANG

IPC分类号： H03K5/22

CPC分类号： H05B33/0812 ,  H05B33/0896 ,  Y02B20/343 ,  Y02B20/345

摘要： The device for generating three mode signals includes: a voltage setting block including an input terminal receiving three input signals of driving voltage, open, and ground and setting three voltages according to the three input signals; and an output block including two output terminals and a second node B receiving the three voltages from the voltage setting block, and outputting three combined signals by comparing an input voltage with a reference voltage, whereby only a small number of resistors and amplifiers generates three mode signals to further reduce the chip size than the related art and the external power source is not required to solve the problems of the related art due to noise.

摘要翻译： 用于产生三个模式信号的装置包括：电压设置块，包括接收驱动电压，开路和地线三个输入信号的输入端，并根据三个输入信号设置三个电压; 以及包括两个输出端子和从电压设定块接收三个电压的第二节点B的输出块，并且通过将输入电压与参考电压进行比较来输出三个组合信号，由此只有少数电阻器和放大器产生三个模式 信号以进一步减小芯片尺寸，并且由于噪声而不需要外部电源来解决现有技术的问题。

公开(公告)号：US08653749B2

公开(公告)日：2014-02-18

申请号：US13108535

申请日：2011-05-16

申请人： Bo Hyun Hwang ,  Jung Sun Kwon ,  Seung Kon Kong ,  Jung Hyun Kim ,  Jae Shin Lee ,  Joon Youp Sung

发明人： Bo Hyun Hwang ,  Jung Sun Kwon ,  Seung Kon Kong ,  Jung Hyun Kim ,  Jae Shin Lee ,  Joon Youp Sung

IPC分类号： H05B37/02

CPC分类号： H05B33/0827 ,  H05B33/0818

摘要： Disclosed herein is a light emitting diode (LED) driving device for driving a multi-channel LED element or an LED array for each channel, the LED driving device including: a constant current driver driving currents flowing in each channel; and a minimum voltage selector receiving voltage levels of each channel and selecting a minimum voltage level to thereby feedback the selected minimum voltage level to the constant current driver, wherein matching characteristics of currents flowing in each channel is improved and a size of an integrated circuit (IC) chip is also reduced as compared to a case according to the related art, thereby making it possible to reduce a production cost and satisfy the trend of miniaturization of the chip, while solving a performance deterioration problem due to deterioration of the matching of the currents between the channels.

摘要翻译： 本发明公开了一种用于驱动每个通道的多通道LED元件或LED阵列的发光二极管（LED）驱动装置，该LED驱动装置包括：驱动在每个通道中流动的电流的恒流驱动器; 以及最小电压选择器，其接收每个通道的电压电平并选择最小电压电平，从而将所选择的最小电压电平反馈给恒流驱动器，其中提高了在每个通道中流动的电流的匹配特性，并且集成电路 IC）芯片与现有技术的情况相比也降低，从而可以降低生产成本并满足芯片小型化的趋势，同时解决由于匹配引起的性能劣化问题 通道之间的电流。

公开(公告)号：US08525437B2

公开(公告)日：2013-09-03

申请号：US13028618

申请日：2011-02-16

申请人： Joon Youp Sung ,  Jae Shin Lee ,  Seung Kon Kong ,  Jung Sun Kwon ,  Jung Hyun Kim ,  Bo Hyun Hwang

发明人： Joon Youp Sung ,  Jae Shin Lee ,  Seung Kon Kong ,  Jung Sun Kwon ,  Jung Hyun Kim ,  Bo Hyun Hwang

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0824 ,  Y02B20/347

摘要： Disclosed herein is a device for controlling current of an LED including a constant current generator, a current mirror, and a current amplifier, the device controlling current of an LED, comprising: a selector outputting an L signal or an H signal according to an input control signal; and a current changing unit formed by connecting at least one switching unit in parallel, the switching unit including a transistor and a switch connected to the transistor in series. The device for controlling current of an LED adjusts current supplied to the current amplifier using a SEL input without an effect of a noise, thereby making it possible to change the current of the LED without separately changing a resistor.

摘要翻译： 本发明公开了一种用于控制包括恒流发电机，电流镜和电流放大器的LED的电流的装置，所述装置控制LED的电流，包括：选择器，根据输入端输出L信号或H信号 控制信号; 以及通过并联连接至少一个开关单元形成的电流改变单元，所述开关单元包括晶体管和串联连接到所述晶体管的开关。 用于控制LED的电流的装置使用SEL输入来调节提供给电流放大器的电流而不会产生噪声，从而可以在不分开改变电阻器的情况下改变LED的电流。

公开(公告)号：US08476938B2

公开(公告)日：2013-07-02

申请号：US13027689

申请日：2011-02-15

申请人： Joon Youp Sung ,  Jung Sun Kwon ,  Jae Shin Lee ,  Seung Kon Kong ,  Jung Hyun Kim ,  Bo Hyun Hwang

发明人： Joon Youp Sung ,  Jung Sun Kwon ,  Jae Shin Lee ,  Seung Kon Kong ,  Jung Hyun Kim ,  Bo Hyun Hwang

IPC分类号： H03K5/153

CPC分类号： H05B33/0812 ,  H05B33/0896 ,  Y02B20/343 ,  Y02B20/345

摘要： The device for generating three mode signals includes: a voltage setting block including an input terminal receiving three input signals of driving voltage, open, and ground and setting three voltages according to the three input signals; and an output block including two output terminals and a second node B receiving the three voltages from the voltage setting block, and outputting three combined signals by comparing an input voltage with a reference voltage, whereby only a small number of resistors and amplifiers generates three mode signals to further reduce the chip size than the related art and the external power source is not required to solve the problems of the related art due to noise.

摘要翻译： 用于产生三个模式信号的装置包括：电压设置块，包括接收驱动电压，开路和地线的三个输入信号的输入端，并根据三个输入信号设置三个电压; 以及包括两个输出端子和从电压设定块接收三个电压的第二节点B的输出块，并且通过将输入电压与参考电压进行比较来输出三个组合信号，由此只有少数电阻器和放大器产生三个模式 信号以进一步减小芯片尺寸，并且由于噪声而不需要外部电源来解决现有技术的问题。

公开(公告)号：US20130033189A1

公开(公告)日：2013-02-07

申请号：US13418188

申请日：2012-03-12

申请人： Jung Eui Park ,  Jae Shin Lee ,  Jung Sun Kwon ,  Bo Hyun Hwang ,  Seung Kon Kong

发明人： Jung Eui Park ,  Jae Shin Lee ,  Jung Sun Kwon ,  Bo Hyun Hwang ,  Seung Kon Kong

IPC分类号： H05B37/02

CPC分类号： H05B33/0845

摘要： The present invention relates to a dimming control device, an LED driving device, and a dimming control method. In accordance with an embodiment of the present invention, a dimming control device including: a PWM signal generating unit for generating a PWM signal from a reference signal and an input voltage; a signal compensating unit for compensating the PWM signal output from the PWM signal generating unit using an internal clock signal; and a synchronization unit for synchronizing the compensated signal with an external clock signal to output a synchronized PWM control signal for dimming control is proposed. Further, an LED driving device and a dimming control method are proposed.

摘要翻译： 本发明涉及调光控制装置，LED驱动装置和调光控制方法。 根据本发明的实施例，一种调光控制装置，包括：PWM信号产生单元，用于从参考信号和输入电压产生PWM信号; 信号补偿单元，用于使用内部时钟信号来补偿从PWM信号生成单元输出的PWM信号; 提出了一种同步单元，用于使补偿信号与外部时钟信号同步，以输出用于调光控制的同步PWM控制信号。 此外，提出了LED驱动装置和调光控制方法。

公开(公告)号：US20120161662A1

公开(公告)日：2012-06-28

申请号：US13069558

申请日：2011-03-23

申请人： Jung Hyun KIM ,  Bo Hyun HWANG ,  Jung Sun KWON ,  Seung Kon KONG ,  Jae Shin LEE ,  Joon Youp SUNG

发明人： Jung Hyun KIM ,  Bo Hyun HWANG ,  Jung Sun KWON ,  Seung Kon KONG ,  Jae Shin LEE ,  Joon Youp SUNG

IPC分类号： H05B41/16 ,  H03K7/08

CPC分类号： H05B33/0842 ,  H05B33/0818 ,  H05B33/0824 ,  Y02B20/346

摘要： There is provided a digital PWM generator according to a first exemplary embodiment of the present invention including: an A/D converter dividing a predetermined reference voltage into a plurality of sections corresponding to a predetermined first set value, searching a section to which the magnitude of an input voltage Vin corresponds, among the plurality of sections, and converting a value corresponding to the searched section into a digital signal; a frequency selector providing a counting number by counting a predetermined high-speed counting clock during a one-cycle section of a predetermined reference clock; and a PWM signal generator converting the digital signal from the A/D converter into a ratio value corresponding to a ratio for the reference voltage and generating a PWM signal having a controlled duty ratio of the reference clock by using the ratio value and the counting number from the frequency selector.

摘要翻译： 提供了根据本发明的第一示例性实施例的数字PWM发生器，包括：A / D转换器，将预定的参考电压分成对应于预定的第一设定值的多个部分， 在多个部分中，输入电压Vin对应于将与搜索到的部分相对应的值转换为数字信号; 频率选择器，通过在预定参考时钟的一个周期段内对预定的高速计数时钟进行计数来提供计数数; 以及PWM信号发生器，其将来自A / D转换器的数字信号转换成与参考电压的比率相对应的比值，并通过使用比值和计数数来产生具有参考时钟的受控占空比的PWM信号 从频率选择器。

公开(公告)号：US08155605B2

公开(公告)日：2012-04-10

申请号：US12255136

申请日：2008-10-21

申请人： Bo Hyun Hwang

发明人： Bo Hyun Hwang

IPC分类号： H03B1/04

CPC分类号： H04B1/10 ,  H04B1/40 ,  H04N5/21 ,  H04N21/4126 ,  H04N21/42204

摘要： The present invention relates to an apparatus and method for feedforward-type phase noise elimination in a portable terminal, which detect and eliminate phase-reversed phase noise by subtracting a GSM transmission signal, passed through the power amplifier of a GSM transmission device, from a GSM transmission signal, extracted from an upstream stage of the power amplifier, so that phase noise signals attributable to high-power transmission signals.

摘要翻译： 本发明涉及便携式终端中的前馈型相位噪声消除装置和方法，其通过从GSM传输装置的功率放大器中减去通过GSM传输装置的GSM发送信号来检测和消除相位相位相位噪声 GSM发送信号，从功率放大器的上游级提取，使得可产生大功率传输信号的相位噪声信号。

公开(公告)号：US20120074859A1

公开(公告)日：2012-03-29

申请号：US13186110

申请日：2011-07-19

申请人： Seung Kon KONG ,  Jae Shin LEE ,  Bo Hyun HWANG ,  Jung Hyun KIM ,  Jung Eui PARK ,  Joon Youp SUNG

发明人： Seung Kon KONG ,  Jae Shin LEE ,  Bo Hyun HWANG ,  Jung Hyun KIM ,  Jung Eui PARK ,  Joon Youp SUNG

IPC分类号： H05B37/02

CPC分类号： H05B33/0827 ,  H05B33/0848

摘要： There is provided a driver for light emitting diodes capable of differently setting duties in which driving current flows depending on respective light emitting diode (LED) channels according to a voltage deviation between the LED channels in order to reduce heat generated due to the voltage deviation between the LED channels. The driver for LEDs includes: a detecting unit detecting a voltage drop generated in each of a plurality of LED channels receiving driving power having a preset voltage level; a converting unit converting detected analog values from the detecting unit into digital values; and a driving unit differently setting switching duties in which driving current flows in each of the plurality of LED channels according to the digital values from the converting unit to drive the plurality of LED channels.

摘要翻译： 提供了一种用于发光二极管的驱动器，其能够根据LED通道之间的电压偏差，根据各个发光二极管（LED）通道驱动电流而不同地设定工作，以便减少由于LED通道之间的电压偏差而产生的热量 LED通道。 用于LED的驱动器包括：检测单元，其检测在多个LED通道中的每一个中产生的电压降，其接收具有预设电压电平的驱动功率; 转换单元将来自检测单元的检测到的模拟值转换为数字值; 以及驱动单元，其根据来自转换单元的数字值，驱动电流在多个LED通道中的每一个流动，切换负荷不同，以驱动多个LED通道。

公开(公告)号：US08115413B2

公开(公告)日：2012-02-14

申请号：US12629552

申请日：2009-12-02

申请人： Seung Kon Kong ,  Bo Hyun Hwang ,  Jung Hyun Kim ,  Jung Sun Kwon

发明人： Seung Kon Kong ,  Bo Hyun Hwang ,  Jung Hyun Kim ,  Jung Sun Kwon

IPC分类号： G05F1/00

CPC分类号： H05B33/0812 ,  H05B33/0824 ,  Y02B20/345

摘要： The present invention provides a module for controlling an LED current for selective feedback, an apparatus and a method for driving LEDs using the same. The module for controlling the LED current, which is connected to a plurality of LED channels receiving driving powers supplied from at least one DC/DC converter and controls currents of the LED channels through a constant current, the LED current controlling module includes: an operation mode selector for selecting an operation mode according to an inputted enable signal level; a channel divider for dividing a plurality of LED channels into at least one group according to the selected operation mode; and a minimum voltage selector for selecting an LED channel with a minimum voltage, obtained by comparing voltages detected from each of lower ends of the LED channels included in each of one or more divided groups.

摘要翻译： 本发明提供一种用于控制用于选择反馈的LED电流的模块，用于驱动使用该LED的LED的装置和方法。 用于控制LED电流的模块，其连接到从至少一个DC / DC转换器提供的驱动功率的多个LED通道，并通过恒定电流来控制LED通道的电流，LED电流控制模块包括： 模式选择器，用于根据输入的使能信号电平选择操作模式; 用于根据选择的操作模式将多个LED通道分成至少一个组的通道分配器; 以及用于选择具有最小电压的LED通道的最小电压选择器，其通过比较包括在一个或多个分组中的每一个中的LED通道的每个下端检测到的电压而获得。