公开(公告)号：US09001098B2

公开(公告)日：2015-04-07

申请号：US12712750

申请日：2010-02-25

申请人： Myung-Ho Seo ,  Hee-Seok Han

发明人： Myung-Ho Seo ,  Hee-Seok Han

IPC分类号： G06F3/038 ,  H05B33/08 ,  G09G3/32 ,  G09G3/34

CPC分类号： H05B33/0815 ,  G09G3/32 ,  G09G3/3426 ,  G09G2330/028

摘要： A power supply system includes a control unit comprising a detecting and converting unit that is operable to generate a detected current based on a difference between a set voltage and a voltage representative of a current flow through an energy storage member.

摘要翻译： 电源系统包括控制单元，其包括检测和转换单元，其可操作以基于设定电压和表示通过能量存储构件的电流的电压之间的差产生检测电流。

公开(公告)号：US08368312B2

公开(公告)日：2013-02-05

申请号：US12840539

申请日：2010-07-21

申请人： Yong-Hun Kim ,  Wan-Jung Kim ,  Hee-Seok Han

发明人： Yong-Hun Kim ,  Wan-Jung Kim ,  Hee-Seok Han

IPC分类号： G09G5/10 ,  H05B37/00

CPC分类号： H05B33/0812 ,  H05B33/0827 ,  Y02B20/345

摘要： A light-emitting-diode driving circuit includes a current driving circuit configured to control current signals flowing through light-emitting-diode strings in response to a first signal that includes information of a light-emitting-diode current, a dynamic headroom controller configured to generate a third control signal that changes according to a change of the current signals flowing through the light-emitting-diode strings based on voltage signals of first terminals of each of the light-emitting-diode strings and a second control signal that includes the information of the light-emitting-diode current, and a power supply circuit configured to generate a light-emitting-diode driving voltage that changes in response to the third control signal, and provide the light-emitting-diode driving voltage to second terminals of each of the light-emitting-diode strings.

摘要翻译： 发光二极管驱动电路包括电流驱动电路，其被配置为响应于包括发光二极管电流的信息的第一信号来控制流过发光二极管串的电流信号，动态余量控制器被配置为 基于每个发光二极管串的第一端子的电压信号和包括该信息的第二控制信号，产生根据流过发光二极管串的电流信号的变化而变化的第三控制信号 以及电源电路，其被配置为产生响应于所述第三控制信号而变化的发光二极管驱动电压，并将所述发光二极管驱动电压提供给每个所述第二控制信号的第二端子 的发光二极管串。

公开(公告)号：US20120127214A1

公开(公告)日：2012-05-24

申请号：US13241737

申请日：2011-09-23

申请人： Hee-Seok HAN ,  Jong-Seon Kim

发明人： Hee-Seok HAN ,  Jong-Seon Kim

IPC分类号： G09G3/14 ,  H05B37/02 ,  G09G5/10

CPC分类号： G09G3/342 ,  G09G2320/064 ,  G09G2330/028 ,  H05B33/0827

摘要： A light-emitting-diode (LED) driving circuit and a display device include a current driving circuit, a level detector, a comparing circuit, a digital control circuit, and a power supply circuit. The level detector detects a minimum detection voltage signal having a minimum voltage level among voltage signals of first terminals of respective LED strings. The comparing circuit generates a first comparison output signal and a second comparison output signal based on a headroom-control reference voltage and the minimum detection voltage signal. The digital control circuit adjusts a duty ratio of a gate control signal in a digital mode based on the first comparison output signal, the second comparison output signal and a control clock signal. Therefore, the LED driving circuit has a small area in a semiconductor integrated circuit.

摘要翻译： 发光二极管（LED）驱动电路和显示装置包括电流驱动电路，电平检测器，比较电路，数字控制电路和电源电路。 电平检测器检测在各个LED串的第一端子的电压信号中具有最小电压电平的最小检测电压信号。 比较电路基于余量控制参考电压和最小检测电压信号产生第一比较输出信号和第二比较输出信号。 数字控制电路基于第一比较输出信号，第二比较输出信号和控制时钟信号来调整数字模式中的门控制信号的占空比。 因此，LED驱动电路在半导体集成电路中具有小的面积。

公开(公告)号：US20110050110A1

公开(公告)日：2011-03-03

申请号：US12815020

申请日：2010-06-14

申请人： Hee-seok Han

发明人： Hee-seok Han

IPC分类号： H05B37/02

CPC分类号： H05B33/0818 ,  H05B33/0824 ,  H05B33/0827 ,  Y02B20/346

摘要： The light emitting diode (LED) driving apparatus includes a channel driving unit configured to detect a pulse width of a pulse width modulation (PWM) signal, and configured to output n dimming signals, where n is a natural number greater than or equal to 2. The channel driving unit is configured to sequentially shift a phase of the PWM signal by as much as the detected pulse width to generate the n dimming signals, and configured to output the n dimming signals to n channels.

摘要翻译： 发光二极管（LED）驱动装置包括：通道驱动单元，被配置为检测脉宽调制（PWM）信号的脉冲宽度，并且被配置为输出n个调光信号，其中n是大于或等于2的自然数 通道驱动单元被配置为将PWM信号的相位顺序地移动到所检测的脉冲宽度以产生n个调光信号，并且被配置为将n个调光信号输出到n个通道。

公开(公告)号：US20100171372A1

公开(公告)日：2010-07-08

申请号：US12652267

申请日：2010-01-05

申请人： Hyoung-rae Kim ,  Hee-seok Han ,  Yoon-kyung Choi

发明人： Hyoung-rae Kim ,  Hee-seok Han ,  Yoon-kyung Choi

IPC分类号： H02M3/07

CPC分类号： H02M3/07 ,  Y10T307/76

摘要： An apparatus for generating a voltage required for a semiconductor device by using a voltage supplied from an external power supply is provided. A charge pump circuit includes a first circuit comprising a first capacitor and a first group of switching elements and controlling the first group of switching elements according to first and second switching signals to transfer a voltage charged in the first capacitor to a target terminal during a first period and to charge the first capacitor with a reference voltage applied to a first input terminal of the first capacitor during a second period, and a second circuit comprising a second capacitor, a third capacitor connected between an output terminal and a ground terminal and a second group of switching elements, and controlling the second group of switching elements according to the first and second switching signals to connect a first terminal of the second capacitor to the ground terminal during the first period, connect the first terminal of the second capacitor to a power supply voltage input terminal during the second period, connect a second terminal of the second capacitor to the power supply voltage input terminal when a voltage of the second terminal of the second capacitor is lower than a voltage of the target terminal during the first period, and connect the second terminal of the second capacitor to the output terminal during the second period.

摘要翻译： 提供一种通过使用从外部电源提供的电压来产生半导体器件所需的电压的装置。 电荷泵电路包括：第一电路，包括第一电容器和第一组开关元件，并且根据第一和第二开关信号控制第一组开关元件，以在第一电容器和第二开关元件期间将在第一电容器中充电的电压传送到目标端子 并且在第二时段期间用施加到第一电容器的第一输入端的参考电压对第一电容器充电;以及第二电路，包括第二电容器，连接在输出端子和接地端子之间的第三电容器，以及第二电容器 开关元件组，并且根据第一和第二开关信号控制第二组开关元件，以在第一时段期间将第二电容器的第一端子连接到接地端子，将第二电容器的第一端子连接到电源 电源电压输入端子，连接第二电容器的第二端子 在第一时段期间当第二电容器的第二端子的电压低于目标端子的电压时，连接到电源电压输入端子，并且在第二时段期间将第二电容器的第二端子连接到输出端子。

公开(公告)号：US07414373B2

公开(公告)日：2008-08-19

申请号：US11760062

申请日：2007-06-08

申请人： Gyu-Hyeong Cho ,  Sang-Kyung Kim ,  Hee-Seok Han

发明人： Gyu-Hyeong Cho ,  Sang-Kyung Kim ,  Hee-Seok Han

IPC分类号： G05F1/00

CPC分类号： H05B41/2824 ,  H05B41/2822 ,  H05B41/3921 ,  Y10S315/07

摘要： A discharge lamp driving circuit includes an inverter, a ballast capacitor, a discharge lamp, and a lamp current detecting circuit. The inverter converts a DC voltage into an AC voltage with high frequency to output the AC voltage to an output port based on a pulse width modulation control signal. The lamp current detecting circuit outputs a first voltage signal and a second voltage signal according to a voltage across the ballast capacitor to generate a lamp current sensing voltage that is proportional to a lamp current flowing through the discharge lamp. The pulse width modulation control signal has a width varying with amplitude of the lamp current so that the lamp current may be accurately detected.

摘要翻译： 放电灯驱动电路包括逆变器，镇流电容器，放电灯和灯电流检测电路。 逆变器将直流电压转换为高频的交流电压，以将脉冲宽度调制控制信号的交流电压输出到输出端口。 灯电流检测电路根据镇流电容器两端的电压输出第一电压信号和第二电压信号，以产生与流过放电灯的灯电流成比例的灯电流检测电压。 脉冲宽度调制控制信号的宽度随着灯电流的振幅而变化，从而可以准确地检测灯电流。

公开(公告)号：US20060176104A1

公开(公告)日：2006-08-10

申请号：US11343976

申请日：2006-02-01

申请人： Eun-chul Park ,  Han-seung Lee ,  Gyu-hyung Cho ,  Hee-seok Han

发明人： Eun-chul Park ,  Han-seung Lee ,  Gyu-hyung Cho ,  Hee-seok Han

IPC分类号： H03K5/00

CPC分类号： H03H11/1213 ,  H03F1/223 ,  H03F3/347 ,  H03F3/45188 ,  H03F2203/45644 ,  H03F2203/45712

摘要： An ultra wideband filter is provided that filters an input signal using a pair of cross-coupled transistors with a small size and small power consumption. The ultra wideband filter includes a reference current generator unit generating a reference current using a bias signal of a predetermined level, a transconductor unit that is biased by the reference current and converts a predetermined input voltage into a current of a predetermined amount to output the current if the input voltage is applied thereto, and a filter unit that outputs a predetermined output voltage corresponding to the output current of the transconductor unit using a plurality of cross-coupled transistors and capacitors. The filter unit may include cross-coupled nMOS and pMOS transistors, and first and second capacitors respectively connected to respective drain terminals of the nMOS and pMOS transistors. Accordingly, the ultra wideband filter can be designed in a minimum size.

摘要翻译： 提供了一种超宽带滤波器，其使用具有小尺寸和小功耗的一对交叉耦合晶体管对输入信号进行滤波。 超宽带滤波器包括使用预定电平的偏置信号产生参考电流的参考电流发生器单元，被参考电流偏置的跨导单元，并将预定输入电压转换成预定量的电流以输出电流 如果施加输入电压，以及滤波器单元，其使用多个交叉耦合的晶体管和电容器输出与跨导单元的输出电流相对应的预定输出电压。 滤波器单元可以包括交叉耦合的nMOS和pMOS晶体管，以及分别连接到nMOS和pMOS晶体管的相应漏极端子的第一和第二电容器。 因此，超宽带滤波器可以被设计成最小尺寸。

公开(公告)号：US20060061304A1

公开(公告)日：2006-03-23

申请号：US11232316

申请日：2005-09-21

申请人： Gyu-Hyeong Cho ,  Sang-Kyung Kim ,  Hee-Seok Han

发明人： Gyu-Hyeong Cho ,  Sang-Kyung Kim ,  Hee-Seok Han

IPC分类号： H05B37/02

CPC分类号： H05B41/2824 ,  H05B41/2822 ,  H05B41/3921 ,  Y10S315/07

摘要： A discharge lamp driving circuit includes an inverter, a ballast capacitor, a discharge lamp, and a lamp current detecting circuit. The inverter converts a DC voltage into an AC voltage with high frequency to output the AC voltage to an output port based on a pulse width modulation control signal. The lamp current detecting circuit outputs a first voltage signal and a second voltage signal according to a voltage across the ballast capacitor to generate a lamp current sensing voltage that is proportional to a lamp current flowing through the discharge lamp. The pulse width modulation control signal has a width varying with amplitude of the lamp current so that the lamp current may be accurately detected.

摘要翻译： 放电灯驱动电路包括逆变器，镇流电容器，放电灯和灯电流检测电路。 逆变器将直流电压转换为高频的交流电压，以将脉冲宽度调制控制信号的交流电压输出到输出端口。 灯电流检测电路根据镇流电容器两端的电压输出第一电压信号和第二电压信号，以产生与流过放电灯的灯电流成比例的灯电流检测电压。 脉冲宽度调制控制信号的宽度随着灯电流的振幅而变化，从而可以准确地检测灯电流。

公开(公告)号：US08232835B2

公开(公告)日：2012-07-31

申请号：US12652267

申请日：2010-01-05

申请人： Hyoung-rae Kim ,  Hee-seok Han ,  Yoon-kyung Choi

发明人： Hyoung-rae Kim ,  Hee-seok Han ,  Yoon-kyung Choi

IPC分类号： G05F1/10

CPC分类号： H02M3/07 ,  Y10T307/76

摘要： An apparatus for generating a voltage required for a semiconductor device by using a voltage supplied from an external power supply is provided. A charge pump circuit includes a first circuit comprising a first capacitor and a first group of switching elements and controlling the first group of switching elements according to first and second switching signals to transfer a voltage charged in the first capacitor to a target terminal during a first period and to charge the first capacitor with a reference voltage applied to a first input terminal of the first capacitor during a second period, and a second circuit comprising a second capacitor, a third capacitor connected between an output terminal and a ground terminal and a second group of switching elements, and controlling the second group of switching elements according to the first and second switching signals to connect a first terminal of the second capacitor to the ground terminal during the first period, connect the first terminal of the second capacitor to a power supply voltage input terminal during the second period, connect a second terminal of the second capacitor to the power supply voltage input terminal when a voltage of the second terminal of the second capacitor is lower than a voltage of the target terminal during the first period, and connect the second terminal of the second capacitor to the output terminal during the second period.

摘要翻译： 提供一种通过使用从外部电源提供的电压来产生半导体器件所需的电压的装置。 电荷泵电路包括：第一电路，包括第一电容器和第一组开关元件，并且根据第一和第二开关信号控制第一组开关元件，以在第一电容器和第二开关元件期间将在第一电容器中充电的电压传送到目标端子 并且在第二时段期间用施加到第一电容器的第一输入端的参考电压对第一电容器充电;以及第二电路，包括第二电容器，连接在输出端子和接地端子之间的第三电容器，以及第二电容器 组开关元件，并且根据第一和第二开关信号控制第二组开关元件，以在第一时段期间将第二电容器的第一端子连接到接地端子，将第二电容器的第一端子连接到电源 电源电压输入端子，连接第二电容器的第二端子 在第一时段期间当第二电容器的第二端子的电压低于目标端子的电压时，连接到电源电压输入端子，并且在第二时段期间将第二电容器的第二端子连接到输出端子。

公开(公告)号：US20110204817A1

公开(公告)日：2011-08-25

申请号：US13026708

申请日：2011-02-14

申请人： Hee Seok HAN

发明人： Hee Seok HAN

IPC分类号： H05B37/02

CPC分类号： G09G3/3426 ,  G09G2320/064 ,  G09G2330/021 ,  H05B33/0815 ,  H05B33/0827

摘要： A light source driver including an adjusting circuit configured to adjust a voltage applied to each of a plurality of light source channels in response to a plurality of comparison signals and a comparison circuit configured to compare a minimum voltage among output voltages of the respective light source channels with a plurality of reference voltages and output the plurality of comparison signals.

摘要翻译： 一种光源驱动器，包括调整电路，其被配置为响应于多个比较信号调整施加到多个光源通道中的每一个的电压;以及比较电路，被配置为比较各个光源通道的输出电压中的最小电压 具有多个参考电压并输出多个比较信号。