公开(公告)号：US07646181B2

公开(公告)日：2010-01-12

申请号：US11928845

申请日：2007-10-30

申请人： Jeong In Cheon ,  Byoung Own Min ,  Chang Woo Ha ,  Deuk Hee Park

发明人： Jeong In Cheon ,  Byoung Own Min ,  Chang Woo Ha ,  Deuk Hee Park

IPC分类号： G05F1/40 ,  G05F1/56

CPC分类号： H02M3/3376 ,  H02M1/36 ,  H02M2001/0058 ,  Y02B70/1491

摘要： A control circuit of a DC-DC converter is provided. A mode selection section selects an Active Clamp Forward (ACF) or a Logic Link Control (LLC) mode. A soft start section generates a soft start signal in the ACF and LLC modes. A PWM comparison section compares a current detection signal with a feedback signal, a feedback reference signal and the soft start signal in the ACF mode, and generates a PWM signal based on a comparison result. A selection section selects the PWM signal of the PWM comparison section in the ACF mode. A clock generation section generates a clock signal having a fixed frequency in the ACF mode, and generates a clock signal having a frequency based on an operating current and the soft start signal in the LLC mode. A latch section maintains the PWM signal in response to the clock signal in the ACF mode and maintains the clock signal in the LLC mode.

摘要翻译： 提供DC-DC转换器的控制电路。 模式选择部分选择有源钳位前馈（ACF）或逻辑链路控制（LLC）模式。 软启动部分在ACF和LLC模式下产生软启动信号。 PWM比较部分将电流检测信号与ACF模式中的反馈信号，反馈参考信号和软启动信号进行比较，并且基于比较结果生成PWM信号。 选择部分在ACF模式下选择PWM比较部分的PWM信号。 时钟产生部分以ACF模式产生具有固定频率的时钟信号，并且在LLC模式下产生具有基于工作电流的频率和软启动信号的时钟信号。 锁存部分响应于ACF模式中的时钟信号而保持PWM信号，并将时钟信号保持在LLC模式。

公开(公告)号：US08643587B2

公开(公告)日：2014-02-04

申请号：US11566505

申请日：2006-12-04

申请人： Chang Woo Ha ,  Byoung Own Min ,  Jeong In Cheon ,  Yu Jin Jang

发明人： Chang Woo Ha ,  Byoung Own Min ,  Jeong In Cheon ,  Yu Jin Jang

IPC分类号： G09G3/36

CPC分类号： G09G3/3413 ,  G09G2310/0235 ,  G09G2320/064 ,  H05B33/0818 ,  Y02B20/347

摘要： In an FSC mode LCD, a controller operates in response to an external adjustment, and a DC/DC converter converts a battery voltage into a driving voltage under control of the controller. A color LED backlight includes first, second and third color LED arrays connected in parallel, which are operated by the driving voltage. An FSC generator generates first, second and third color PWM signals according to an internal sawtooth voltage and a dimming voltage. A 3-channel current source generates first, second and third driving currents under control of the controller, and on/off switches paths of the first, second and third driving currents flowing through the first, second and third color LED arrays according to the first, second and third color PWM signals generated from the FSC generator, thereby adjusting luminance of the first, second and third color LED arrays of the color LED backlight.

摘要翻译： 在FSC模式LCD中，控制器响应于外部调整而工作，并且DC / DC转换器在控制器的控制下将电池电压转换成驱动电压。 彩色LED背光包括由驱动电压操作的并联连接的第一，第二和第三彩色LED阵列。 FSC发生器根据内部锯齿电压和调光电压产生第一，第二和第三颜色PWM信号。 3通道电流源在控制器的控制下产生第一，第二和第三驱动电流，并且根据第一，第二和第三驱动电流在第一，第二和第三彩色LED阵列中的第一，第二和第三驱动电流的开/关 ，从FSC发生器产生的第二和第三颜色PWM信号，从而调整彩色LED背光的第一，第二和第三颜色LED阵列的亮度。

公开(公告)号：US07741893B2

公开(公告)日：2010-06-22

申请号：US11971199

申请日：2008-01-08

申请人： Jeong In Cheon ,  Byoung Own Min ,  Chang Woo Ha

发明人： Jeong In Cheon ,  Byoung Own Min ,  Chang Woo Ha

IPC分类号： H03K3/00

CPC分类号： H03K4/502

摘要： There is a provided a dual mode clock generator that is applicable to a direct current-direct current converter of a power supply. The dual mode clock generator includes a frequency controller for controlling generation of charge and discharge; a current source unit for generating a charge, and generating a charge; a capacitor for charging a voltage according to the charge current generated by the current source unit; an oscillation controller for controlling switch-on or switch-off to charge and discharge the capacitor; a switch for controlling the charging and discharging of the capacitor through the ON or OFF control of the oscillation controller; and a current sink unit for generating a discharge current according to the second current in the first operation mode and generating a discharge current according to the third current and the fourth current in the second operation mode.

摘要翻译： 提供了一种适用于电源的直流电流转换器的双模式时钟发生器。 双模式时钟发生器包括用于控制充放电的产生的频率控制器; 用于产生电荷并产生电荷的电流源单元; 电容器，用于根据由电流源单元产生的充电电流对电压进行充电; 用于控制开关或关断以对电容器充电和放电的振荡控制器; 用于通过振荡控制器的ON或OFF控制来控制电容器的充电和放电的开关; 以及电流吸收单元，用于根据第一操作模式中的第二电流产生放电电流，并且在第二操作模式中根据第三电流和第四电流产生放电电流。

公开(公告)号：US08018177B2

公开(公告)日：2011-09-13

申请号：US12213809

申请日：2008-06-25

申请人： Bon Ahm Goo ,  Byoung Own Min ,  Young Jin Lee ,  Chang Woo Ha ,  Jeong In Cheon

发明人： Bon Ahm Goo ,  Byoung Own Min ,  Young Jin Lee ,  Chang Woo Ha ,  Jeong In Cheon

IPC分类号： H05B41/36

CPC分类号： H05B33/0818

摘要： A dimming buck type light emitting diode (LED) driving apparatus includes a main switch controlling a driving current flowing into an LED; a current detector detecting a driving current flowing into the LED; a power level determination unit determining a level of the driving power; a dimming capacitor for dimming control; a dimming control unit controlling charging and discharging of the dimming capacitor according to a power level determination signal and an enable signal; a reset circuit unit generating a reset signal according to a detection voltage from the current detector and a voltage of the dimming capacitor; a pulse generation unit generating a pulse signal; and a latch set by the pulse signal of the pulse generation unit and reset by the reset signal of the reset circuit unit to generate a switching signal, and turning on and off the main switch using the switching signal.

摘要翻译： 调光降压型发光二极管（LED）驱动装置包括控制流入LED的驱动电流的主开关; 检测流入LED的驱动电流的电流检测器; 功率电平确定单元，确定驱动电力的电平; 调光电容器，用于调光控制; 调光控制单元，根据功率电平确定信号和使能信号控制调光电容器的充电和放电; 复位电路单元，根据来自电流检测器的检测电压和调光电容器的电压产生复位信号; 产生脉冲信号的脉冲产生单元; 以及由脉冲发生单元的脉冲信号设置的锁存器，并通过复位电路单元的复位信号进行复位，以产生开关信号，并使用开关信号接通和断开主开关。

公开(公告)号：US20090322247A1

公开(公告)日：2009-12-31

申请号：US12213809

申请日：2008-06-25

申请人： Bon Ahm Goo ,  Byoung Own Min ,  Young Jin Lee ,  Chang Woo Ha ,  Jeong In Cheon

发明人： Bon Ahm Goo ,  Byoung Own Min ,  Young Jin Lee ,  Chang Woo Ha ,  Jeong In Cheon

IPC分类号： H05B41/36

CPC分类号： H05B33/0818

摘要： A dimming buck type light emitting diode (LED) driving apparatus includes a main switch controlling a driving current flowing into an LED; a current detector detecting a driving current flowing into the LED; a power level determination unit determining a level of the driving power; a dimming capacitor for dimming control; a dimming control unit controlling charging and discharging of the dimming capacitor according to a power level determination signal and an enable signal; a reset circuit unit generating a reset signal according to a detection voltage from the current detector and a voltage of the dimming capacitor; a pulse generation unit generating a pulse signal; and a latch set by the pulse signal of the pulse generation unit and reset by the reset signal of the reset circuit unit to generate a switching signal, and turning on and off the main switch using the switching signal.

摘要翻译： 调光降压型发光二极管（LED）驱动装置包括控制流入LED的驱动电流的主开关; 检测流入LED的驱动电流的电流检测器; 功率电平确定单元，确定驱动电力的电平; 调光电容器，用于调光控制; 调光控制单元，根据功率电平确定信号和使能信号控制调光电容器的充电和放电; 复位电路单元，根据来自电流检测器的检测电压和调光电容器的电压产生复位信号; 产生脉冲信号的脉冲产生单元; 以及由脉冲发生单元的脉冲信号设置的锁存器，并通过复位电路单元的复位信号进行复位，以产生开关信号，并使用开关信号接通和断开主开关。

公开(公告)号：US20070182699A1

公开(公告)日：2007-08-09

申请号：US11566505

申请日：2006-12-04

申请人： Chang Woo HA ,  Byoung Own Min ,  Jeong In Cheon ,  Yu Jin Jang

发明人： Chang Woo HA ,  Byoung Own Min ,  Jeong In Cheon ,  Yu Jin Jang

IPC分类号： G09G3/36

CPC分类号： G09G3/3413 ,  G09G2310/0235 ,  G09G2320/064 ,  H05B33/0818 ,  Y02B20/347

摘要： In an FSC mode LCD, a controller operates in response to an external adjustment, and a DC/DC converter converts a battery voltage into a driving voltage under control of the controller. A color LED backlight includes first, second and third color LED arrays connected in parallel, which are operated by the driving voltage. An FSC generator generates first, second and third color PWM signals according to an internal sawtooth voltage and a dimming voltage. A 3-channel current source generates first, second and third driving currents under control of the controller, and on/off switches paths of the first, second and third driving currents flowing through the first, second and third color LED arrays according to the first, second and third color PWM signals generated from the FSC generator, thereby adjusting luminance of the first, second and third color LED arrays of the color LED backlight.

摘要翻译： 在FSC模式LCD中，控制器响应于外部调整而工作，并且DC / DC转换器在控制器的控制下将电池电压转换成驱动电压。 彩色LED背光包括由驱动电压操作的并联连接的第一，第二和第三彩色LED阵列。 FSC发生器根据内部锯齿电压和调光电压产生第一，第二和第三颜色PWM信号。 3通道电流源在控制器的控制下产生第一，第二和第三驱动电流，并且根据第一，第二和第三驱动电流在第一，第二和第三彩色LED阵列中的第一，第二和第三驱动电流的开/关 ，从FSC发生器产生的第二和第三颜色PWM信号，从而调整彩色LED背光的第一，第二和第三颜色LED阵列的亮度。

公开(公告)号：US20100109547A1

公开(公告)日：2010-05-06

申请号：US12437692

申请日：2009-05-08

申请人： Yu Jin JANG ,  Byoung own Min ,  Jung Chul Gong ,  Sang Cheol Shin ,  Jeong In Cheon

发明人： Yu Jin JANG ,  Byoung own Min ,  Jung Chul Gong ,  Sang Cheol Shin ,  Jeong In Cheon

IPC分类号： H05B41/292

CPC分类号： H05B41/2855

摘要： Disclosed is a liquid crystal display (LCD) backlight inverter. The LCD backlight inverter includes a lamp open detection unit outputting a first open detection voltage for a preset time period when it is determined that a predetermined lamp is open, based on a current voltage corresponding to the current of the predetermined lamp of a plurality of lamps, a first open determination unit outputting an open detection signal when the first open detection voltage is input, a second open determination unit outputting a protection signal when it is determined that all of the plurality of lamps are open based on detection voltages of the plurality of lamps, a temporary protection determination unit outputting a frequency change signal when both the open detection signal and the protection signal are input, and an operating frequency control unit changing an operating frequency to a preset protective frequency according to the frequency change.

摘要翻译： 公开了一种液晶显示（LCD）背光逆变器。 LCD背光逆变器包括：灯开路检测单元，基于与多个灯的预定灯的电流相对应的电流电压，当确定预定灯打开时，将预定时间段的第一开路检测电压输出 第一开路判定单元，当输入第一开路检测电压时，输出开路检测信号;第二开路判定单元，基于多个灯的检测电压确定多个灯全部断开时，输出保护信号 灯，当输入开放检测信号和保护信号时输出频率变化信号的临时保护判定单元，以及根据频率变化将工作频率改变为预设保护频率的工作频率控制单元。

公开(公告)号：US20100134450A1

公开(公告)日：2010-06-03

申请号：US12464399

申请日：2009-05-12

申请人： Seung Kon KONG ,  Byoung Own Min ,  Jung Chul Gong ,  Jeong In Cheon ,  Yu Jin Jang

发明人： Seung Kon KONG ,  Byoung Own Min ,  Jung Chul Gong ,  Jeong In Cheon ,  Yu Jin Jang

IPC分类号： G06F3/038

CPC分类号： G09G3/3406 ,  G09G2320/0247

摘要： A driver for display provides a driving signal having a frequency synchronized with that of an image signal when the image signal is normal and provides a driving signal having a predetermined frequency when the image signal is abnormal, thereby performing a stable operation. The driver includes a frequency detection unit detecting a frequency difference between a frequency of an inputted image signal and a frequency of a frequency-divided driving signal, a driving signal generation unit generating the driving signal having a frequency synchronized with the frequency of the image signal according to a detection result of the frequency detection unit, and a control unit stopping a frequency detection operation of the frequency detection unit when the detection result of the frequency detection unit shows an abnormal operation.

摘要翻译： 当图像信号正常时，用于显示的驱动器提供具有与图像信号的频率同步的频率的驱动信号，并且当图像信号异常时提供具有预定频率的驱动信号，从而执行稳定的操作。 驱动器包括检测输入图像信号的频率与分频驱动信号的频率之间的频率差的频率检测单元，产生具有与图像信号的频率同步的频率的驱动信号的驱动信号生成单元 根据频率检测单元的检测结果，以及当频率检测单元的检测结果显示异常操作时，控制单元停止频率检测单元的频率检测操作。

公开(公告)号：US20100102750A1

公开(公告)日：2010-04-29

申请号：US12606800

申请日：2009-10-27

申请人： Jeong In Cheon ,  Byoung Own Min ,  Yu Jin Jang ,  Seung Kon Kong

发明人： Jeong In Cheon ,  Byoung Own Min ,  Yu Jin Jang ,  Seung Kon Kong

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  Y02B20/341 ,  Y02B20/346

摘要： The present invention relates to a light emitting diode driver having a protection function that activates hiccup mode for a predetermined period of time when a light emitting diode performs an abnormal operation to thereby protect the light emitting diode. A light emitting diode driver having a protection function according to an aspect of the invention may include: a light emitting unit emitting light; a reference signal generating unit generating a reference signal having pulses with a predetermined period when the light emitting unit performs an abnormal operation; a control unit controlling operating time in hiccup mode according to the reference signal from the reference signal generating unit, the hiccup mode where output is switched on and off at a predetermined period; and a driving unit driving the light emitting unit in the hiccup mode for the operating time determined by the control unit.

摘要翻译： 本发明涉及具有保护功能的发光二极管驱动器，该保护功能在发光二极管执行异常操作从而保护发光二极管时，在预定时间段内激活打嗝模式。 根据本发明的一个方面的具有保护功能的发光二极管驱动器可以包括：发光单元; 参考信号产生单元，当所述发光单元执行异常操作时，产生具有预定周期的脉冲的参考信号; 控制单元，根据来自基准信号生成单元的基准信号控制打嗝模式的动作时间，以预定时间段接通和断开输出的打嗝模式; 以及驱动单元，在由所述控制单元确定的所述操作时间的情况下，以所述打嗝模式驱动所述发光单元。

公开(公告)号：US08184111B2

公开(公告)日：2012-05-22

申请号：US12464399

申请日：2009-05-12

申请人： Seung Kon Kong ,  Byoung Own Min ,  Jung Chul Gong ,  Jeong In Cheon ,  Yu Jin Jang

发明人： Seung Kon Kong ,  Byoung Own Min ,  Jung Chul Gong ,  Jeong In Cheon ,  Yu Jin Jang

IPC分类号： G09G5/00

CPC分类号： G09G3/3406 ,  G09G2320/0247

摘要： A driver for display provides a driving signal having a frequency synchronized with that of an image signal when the image signal is normal and provides a driving signal having a predetermined frequency when the image signal is abnormal, thereby performing a stable operation. The driver includes a frequency detection unit detecting a frequency difference between a frequency of an inputted image signal and a frequency of a frequency-divided driving signal, a driving signal generation unit generating the driving signal having a frequency synchronized with the frequency of the image signal according to a detection result of the frequency detection unit, and a control unit stopping a frequency detection operation of the frequency detection unit when the detection result of the frequency detection unit shows an abnormal operation.

摘要翻译： 当图像信号正常时，用于显示的驱动器提供具有与图像信号的频率同步的频率的驱动信号，并且当图像信号异常时提供具有预定频率的驱动信号，从而执行稳定的操作。 驱动器包括检测输入图像信号的频率与分频驱动信号的频率之间的频率差的频率检测单元，产生具有与图像信号的频率同步的频率的驱动信号的驱动信号生成单元 根据频率检测单元的检测结果，以及当频率检测单元的检测结果显示异常操作时，控制单元停止频率检测单元的频率检测操作。