公开(公告)号：US07345527B2

公开(公告)日：2008-03-18

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：US20070229084A1

公开(公告)日：2007-10-04

申请号：US11760071

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： G01R31/44

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：US07242155B2

公开(公告)日：2007-07-10

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： 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：US20110115770A1

公开(公告)日：2011-05-19

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 ,  G05F1/10 ,  G09G3/32 ,  H05B37/02

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：US20100019831A1

公开(公告)日：2010-01-28

申请号：US12503958

申请日：2009-07-16

申请人： Hee-seok Han

发明人： Hee-seok Han

IPC分类号： G05F1/10

CPC分类号： H02M3/07

摘要： A charge pump includes a first end including a first section having a first capacitor and a first node, and a second end including a second section having a second capacitor. The first section charges the first capacitor with a first voltage during a first logic section of a clock signal, and converts an external voltage to a first middle voltage using the first voltage and a second voltage in a second logic section of the clock signal. The first middle voltage is a node voltage of a first node. The second section is connected to the first node, charges the second capacitor with a third voltage during the first logic section of the clock signal, and converts the external voltage to an internal voltage by using the third voltage and the first middle voltage in the second logic section of the clock signal.

摘要翻译： 电荷泵包括第一端，其包括具有第一电容器和第一节点的第一部分，以及包括具有第二电容器的第二部分的第二端。 第一部分在时钟信号的第一逻辑部分期间用第一电压对第一电容器充电，并且使用时钟信号的第二逻辑部分中的第一电压和第二电压将外部电压转换为第一中间电压。 第一中间电压是第一节点的节点电压。 第二部分连接到第一节点，在时钟信号的第一逻辑部分期间用第三电压对第二电容器充电，并且通过使用第三电压和第二电压的第二中间电压将外部电压转换成内部电压 时钟信号的逻辑部分。

公开(公告)号：US08581830B2

公开(公告)日：2013-11-12

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： G09G3/36

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。

公开(公告)号：US20110109243A1

公开(公告)日：2011-05-12

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： H05B37/02

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：US07880501B2

公开(公告)日：2011-02-01

申请号：US12486176

申请日：2009-06-17

申请人： Hee-Seok Han ,  Hyoung-Rae Kim

发明人： Hee-Seok Han ,  Hyoung-Rae Kim

IPC分类号： H03K19/175

CPC分类号： G09G3/3696 ,  G09G3/3648 ,  G09G2310/0289 ,  G09G2330/02 ,  H03K3/356113 ,  H03K19/018571

摘要： Level shifting circuits generate multiple tracking signals that are in-phase with an input signal, but are also level-shifted with wider voltage swings relative to the input signal. These input tracking signals are provided as separate inputs to an inverter having at least one PMOS pull-up transistor and at least one NMOS pull-down transistor therein. A level shifting circuit may include a differential input circuit, which is responsive to true and complementary input signals. A first load circuit is electrically coupled to the differential input circuit. This first load circuit is configured to generate first and second tracking signals at respective first and second nodes therein. These first and second tracking signals are in-phase, level-shifted versions of each other, and have respective voltage swings that are greater than a voltage swing of the complementary input signals. The inverter includes a pull-up transistor responsive to the first tracking signal and a pull-down transistor responsive to the second tracking signal.

摘要翻译： 电平移位电路产生与输入信号同相的多个跟踪信号，但是也相对于输入信号具有更宽的电压摆幅而电平移位。 这些输入跟踪信号作为分离的输入提供给具有至少一个PMOS上拉晶体管和至少一个NMOS下拉晶体管的反相器。 电平移位电路可以包括差分输入电路，其响应于真实和互补的输入信号。 第一负载电路电耦合到差分输入电路。 该第一负载电路被配置为在其中的相应的第一和第二节点处产生第一和第二跟踪信号。 这些第一和第二跟踪信号是彼此的同相，电平移位版本，并且具有大于互补输入信号的电压摆幅的各自的电压摆幅。 反相器包括响应于第一跟踪信号的上拉晶体管和响应于第二跟踪信号的下拉晶体管。

公开(公告)号：US20110121755A1

公开(公告)日：2011-05-26

申请号：US12941607

申请日：2010-11-08

申请人： Hee-seok HAN

发明人： Hee-seok HAN

IPC分类号： H05B37/02

CPC分类号： H05B33/0827 ,  H05B33/0815

摘要： Provided is a multi-channel LED driving circuit which includes: an LED array of N LED channels (N is an integer equal to or greater than one), each channel having a plurality of LEDs connected in series, a supply voltage being input to one end of each channel, and the other end of each channel being connected to N current drivers, respectively; a dynamic headroom control block comparing N channel voltages of common nodes of the N LED channels and the N current drivers with combination voltages of a first reference voltage and a hysteresis voltage, and generating a second reference voltage in response to at least one dimming signal that defines a time period during which a predetermined current flows to the N current drivers through the N LED channels; and a direct current to direct current (DC-DC) converter generating the supply voltage corresponding to the second reference voltage.

摘要翻译： 提供了一种多通道LED驱动电路，其包括：N个LED通道的LED阵列（N是等于或大于1的整数），每个通道具有串联连接的多个LED，电源电压被输入到一个 每个通道的端部，并且每个通道的另一端分别连接到N个当前驱动器; 一个动态裕量控制块，用于将N个LED通道的公共节点和N个电流驱动器的N个通道电压与第一参考电压和滞后电压的组合电压进行比较，并响应于至少一个调光信号产生第二参考电压， 定义了预定电流通过N个LED通道流向N个电流驱动器的时间段; 以及产生与第二参考电压相对应的电源电压的直流（DC-DC）转换器的直流电。

公开(公告)号：US20090315610A1

公开(公告)日：2009-12-24

申请号：US12486176

申请日：2009-06-17

申请人： Hee-Seok Han ,  Hyoung-Rae Kim

发明人： Hee-Seok Han ,  Hyoung-Rae Kim

IPC分类号： H03L5/00

CPC分类号： G09G3/3696 ,  G09G3/3648 ,  G09G2310/0289 ,  G09G2330/02 ,  H03K3/356113 ,  H03K19/018571

摘要： Level shifting circuits generate multiple tracking signals that are in-phase with an input signal, but are also level-shifted with wider voltage swings relative to the input signal. These input tracking signals are provided as separate inputs to an inverter having at least one PMOS pull-up transistor and at least one NMOS pull-down transistor therein. A level shifting circuit may include a differential input circuit, which is responsive to true and complementary input signals. A first load circuit is electrically coupled to the differential input circuit. This first load circuit is configured to generate first and second tracking signals at respective first and second nodes therein. These first and second tracking signals are in-phase, level-shifted versions of each other, and have respective voltage swings that are greater than a voltage swing of the complementary input signals. The inverter includes a pull-up transistor responsive to the first tracking signal and a pull-down transistor responsive to the second tracking signal.

摘要翻译： 电平移位电路产生与输入信号同相的多个跟踪信号，但是也相对于输入信号具有更宽的电压摆幅而电平移位。 这些输入跟踪信号作为分离的输入提供给具有至少一个PMOS上拉晶体管和至少一个NMOS下拉晶体管的反相器。 电平移位电路可以包括差分输入电路，其响应于真实和互补的输入信号。 第一负载电路电耦合到差分输入电路。 该第一负载电路被配置为在其中的相应的第一和第二节点处产生第一和第二跟踪信号。 这些第一和第二跟踪信号是彼此的同相，电平移位版本，并且具有大于互补输入信号的电压摆幅的相应电压摆幅。 反相器包括响应于第一跟踪信号的上拉晶体管和响应于第二跟踪信号的下拉晶体管。