利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

12 条记录 (耗时 0.032 秒)

    CIRCUIT AND METHOD OF DRIVING LIGHT EMITTING DIODES, AND LIGHT EMITTING DIODE SYSTEM HAVING THE SAME
    1.
    发明申请
    CIRCUIT AND METHOD OF DRIVING LIGHT EMITTING DIODES, AND LIGHT EMITTING DIODE SYSTEM HAVING THE SAME 有权
    驱动发光二极管的电路和方法以及具有该发光二极管的发光二极管系统

    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。

    Circuit and method of driving light emitting diodes, and light emitting diode system having the same
    2.
    发明授权
    Circuit and method of driving light emitting diodes, and light emitting diode system having the same 有权
    驱动发光二极管的电路和方法，以及具有该发光二极管的发光二极管系统

    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。

    Discharge Lamp Driving Circuit Having a Signal Detection Circuit Therein
    3.
    发明申请
    Discharge Lamp Driving Circuit Having a Signal Detection Circuit Therein 有权
    具有信号检测电路的放电灯驱动电路

    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。

    Discharge lamp driving circuit
    4.
    发明授权
    Discharge lamp driving circuit 有权
    放电灯驱动电路

    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。

    Integrated circuit devices having level shifting circuits therein
    6.
    发明授权
    Integrated circuit devices having level shifting circuits therein 有权
    其中具有电平移位电路的集成电路装置

    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。

    Discharge lamp driving circuit and method of driving a discharge lamp
    8.
    发明授权
    Discharge lamp driving circuit and method of driving a discharge lamp 有权
    放电灯驱动电路和驱动放电灯的方法

    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。

    Circuit and method for driving discharge lamp
    9.
    发明申请
    Circuit and method for driving discharge lamp 有权
    驱动放电灯的电路及方法

    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。

    Integrated Circuit Devices Having Level Shifting Circuits Therein
    10.
    发明申请
    Integrated Circuit Devices Having Level Shifting Circuits Therein 有权
    具有电平转换电路的集成电路器件

    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。