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29 条记录 (耗时 0.019 秒)

    Cold cathode fluorescent lamp driving circuits and associated methods of control
    21.
    发明授权
    Cold cathode fluorescent lamp driving circuits and associated methods of control 有权
    冷阴极荧光灯驱动电路及相关方法的控制

    公开(公告)号：US08368320B2

    公开(公告)日：2013-02-05

    申请号：US12882810

    申请日：2010-09-15

    申请人： Naixing Kuang ,  Lei Du ,  Yuancheng Ren

    发明人： Naixing Kuang ,  Lei Du ,  Yuancheng Ren

    IPC分类号： G05F1/00

    CPC分类号： H05B41/2855 ,  H05B41/2858

    摘要： Methods and circuits for CCFL driving circuit control are disclosed according to various embodiments of the present disclosure. In certain embodiments, the methods and circuits for CCFL driving circuit control provide a control signal for regulating both the duty ratio and frequency of the switching control signal that controls the CCFL driving circuit. External components for control loop compensation and frequency sweeping rate, and/or striking frequency setting may also be utilized.

    摘要翻译： 根据本公开的各种实施例公开了用于CCFL驱动电路控制的方法和电路。 在某些实施例中，用于CCFL驱动电路控制的方法和电路提供用于调节控制CCFL驱动电路的开关控制信号的占空比和频率两者的控制信号。 还可以使用用于控制回路补偿和频率清扫速率和/或冲击频率设定的外部组件。

    Methods and apparatus for driving discharge lamps
    22.
    发明授权
    Methods and apparatus for driving discharge lamps 失效
    用于驱动放电灯的方法和装置

    公开(公告)号：US08159141B2

    公开(公告)日：2012-04-17

    申请号：US12510089

    申请日：2009-07-27

    申请人： Naixing Kuang ,  Lei Du ,  Junming Zhang ,  Yuancheng Ren

    发明人： Naixing Kuang ,  Lei Du ,  Junming Zhang ,  Yuancheng Ren

    IPC分类号： H05B37/02 ,  H05B39/04 ,  H05B41/36

    CPC分类号： H05B41/2827 ,  H05B41/3925

    摘要： Methods and apparatus for driving discharge lamps are disclosed herein. In one embodiment, a method for driving a discharge lamp includes generating a switching signal to drive a discharge lamp, monitoring a working status of the discharge lamp, and determining whether the discharge lamp is operating abnormally based at least in part on the monitored working status. The method also includes decreasing a duty cycle of the switching signal when the discharge lamp is determined to operate abnormally.

    摘要翻译： 本文公开了用于驱动放电灯的方法和装置。 在一个实施例中，用于驱动放电灯的方法包括产生切换信号以驱动放电灯，监视放电灯的工作状态，以及至少部分地基于所监视的工作状态来确定放电灯是否异常运行 。 该方法还包括当放电灯被确定为异常运行时，减小开关信号的占空比。

    METHODS AND APPARATUS FOR DRIVING DISCHARGE LAMPS
    24.
    发明申请
    METHODS AND APPARATUS FOR DRIVING DISCHARGE LAMPS 失效
    驱动放电灯的方法和装置

    公开(公告)号：US20100072906A1

    公开(公告)日：2010-03-25

    申请号：US12510089

    申请日：2009-07-27

    申请人： Naixing Kuang ,  Lei Du ,  Junming Zhang ,  Yuancheng Ren

    发明人： Naixing Kuang ,  Lei Du ,  Junming Zhang ,  Yuancheng Ren

    IPC分类号： H05B37/02

    CPC分类号： H05B41/2827 ,  H05B41/3925

    摘要： Methods and apparatus for driving discharge lamps are disclosed herein. In one embodiment, a method for driving a discharge lamp includes generating a switching signal to drive a discharge lamp, monitoring a working status of the discharge lamp, and determining whether the discharge lamp is operating abnormally based at least in part on the monitored working status. The method also includes decreasing a duty cycle of the switching signal when the discharge lamp is determined to operate abnormally.

    摘要翻译： 本文公开了用于驱动放电灯的方法和装置。 在一个实施例中，用于驱动放电灯的方法包括产生切换信号以驱动放电灯，监视放电灯的工作状态，以及至少部分地基于所监视的工作状态来确定放电灯是否异常运行 。 该方法还包括当放电灯被确定为异常运行时，减小开关信号的占空比。

    LED backlight driver system and associated method of operation
    25.
    发明授权
    LED backlight driver system and associated method of operation 有权
    LED背光驱动系统及相关操作方法

    公开(公告)号：US09215769B2

    公开(公告)日：2015-12-15

    申请号：US13357825

    申请日：2012-01-25

    申请人： Frank Ren ,  Naixing Kuang ,  Bairen Liu ,  Licheng Sheng

    发明人： Frank Ren ,  Naixing Kuang ,  Bairen Liu ,  Licheng Sheng

    IPC分类号： H05B37/00 ,  H05B33/08

    CPC分类号： H05B33/0818 ,  H05B33/0887

    摘要： The embodiments of the present circuit and method disclose a light-emitting diode (LED) driver system. The LED driver system may comprise an isolated converter and a DC/DC converter. The isolated converter may be coupled to a first input signal, and may provide a LED current and a bus voltage. The isolated converter may be configured to regulate the LED current and the bus voltage separately in accordance with a dimming signal. The DC/DC converter may comprise an input coupled to the bus voltage.

    摘要翻译： 本发明的电路和方法的实施例公开了一种发光二极管（LED）驱动器系统。 LED驱动器系统可以包括隔离转换器和DC / DC转换器。 隔离转换器可以耦合到第一输入信号，并且可以提供LED电流和总线电压。 隔离转换器可以被配置为根据调光信号分别调节LED电流和总线电压。 DC / DC转换器可以包括耦合到总线电压的输入。

    LOAD DETECTING CIRCUITS AND THE METHOD THEREOF
    26.
    发明申请
    LOAD DETECTING CIRCUITS AND THE METHOD THEREOF 有权
    负载检测电路及其方法

    公开(公告)号：US20130082742A1

    公开(公告)日：2013-04-04

    申请号：US13538843

    申请日：2012-06-29

    申请人： Yuancheng Ren ,  En Li ,  Naixing Kuang ,  Yike Li

    发明人： Yuancheng Ren ,  Yifang Xi ,  En Li ,  Naixing Kuang ,  Yike Li

    IPC分类号： H03K17/30 ,  H03K17/20

    CPC分类号： H03K17/30 ,  G01R31/40 ,  G05B2219/00 ,  H02M1/00 ,  H02M1/32 ,  H03K17/20 ,  H03K2017/307 ,  H04B1/00

    摘要： A no-load detecting circuit and the method thereof are disclosed. The no-load detecting circuit may be applied in switching mode power supplies or other circuits. The no-load detecting circuit comprises: a variable resistance circuit coupled in series to a load of the switching mode power supply; and a first comparison circuit coupled to the variable resistance circuit to receive the voltage across the variable resistance circuit, wherein based on the comparison of the voltage across the variable resistance circuit and a first threshold, the first comparison circuit generates a no-load detecting signal indicative of the load status; wherein the equivalent resistance of the variable resistance circuit varies based on the varying of the load of the switching mode power supply.

    摘要翻译： 公开了一种空载检测电路及其方法。 空载检测电路可以应用在开关模式电源或其他电路中。 空载检测电路包括：串联耦合到开关模式电源的负载的可变电阻电路; 以及耦合到所述可变电阻电路以接收所述可变电阻电路两端的电压的第一比较电路，其中，基于所述可变电阻电路两端的电压与第一阈值的比较，所述第一比较电路产生无负载检测信号 指示负载状态; 其中可变电阻电路的等效电阻根据开关模式电源的负载变化而变化。

    LED drivers with adaptive hysteretic control circuits and associated methods of operation
    27.
    发明授权
    LED drivers with adaptive hysteretic control circuits and associated methods of operation 有权
    LED驱动器具有自适应迟滞控制电路和相关操作方法

    公开(公告)号：US08269423B2

    公开(公告)日：2012-09-18

    申请号：US12879804

    申请日：2010-09-10

    申请人： Kaiwei Yao ,  Naixing Kuang ,  Edward Deng

    发明人： Kaiwei Yao ,  Naixing Kuang ,  Edward Deng

    IPC分类号： H05B37/00

    CPC分类号： H05B33/0815 ,  Y02B20/347

    摘要： Various embodiments of LED drivers and associated methods of are described below. In one embodiment, a method for controlling an LED driver includes receiving a reference voltage, receiving a feedback voltage from said LED driver, receiving said input voltage as a first feed forward voltage and said output voltage as a second feed forward voltage, generating a hysteretic width based on said first feed forward voltage and said second feed forward voltage, and generating a hysteretic band voltage using said hysteretic width and said reference voltage. The method also includes generating a first control signal for controlling said LED driver based on said hysteretic band voltage and said feedback voltage, inverting said first control signal to generate a second control signal for controlling said LED driver, and achieving a generally fixed frequency for said LED driver.

    摘要翻译： 下面描述LED驱动器和相关方法的各种实施例。 在一个实施例中，一种用于控制LED驱动器的方法包括接收参考电压，从所述LED驱动器接收反馈电压，将所述输入电压作为第一前馈电压接收，所述输出电压作为第二前馈电压，产生滞后 基于所述第一前馈电压和所述第二前馈电压的宽度，以及使用所述滞后宽度和所述参考电压产生滞后带电压。 该方法还包括基于所述迟滞带电压和所述反馈电压产生用于控制所述LED驱动器的第一控制信号，使所述第一控制信号反相以产生用于控制所述LED驱动器的第二控制信号，并且为所述第一控制信号实现所述 LED驱动器

    LIGHT EMITTING ELEMENT DRIVING CIRCUIT
    28.
    发明申请
    LIGHT EMITTING ELEMENT DRIVING CIRCUIT 有权
    发光元件驱动电路

    公开(公告)号：US20120049761A1

    公开(公告)日：2012-03-01

    申请号：US13177420

    申请日：2011-07-06

    申请人： Bo Yu ,  Yuancheng Ren ,  Lei Du ,  Naixing Kuang ,  Zhijiang Yang

    发明人： Bo Yu ,  Yuancheng Ren ,  Lei Du ,  Naixing Kuang ,  Zhijiang Yang

    IPC分类号： H05B37/02

    CPC分类号： H05B33/0827 ,  G09G3/3406 ,  G09G2330/08 ,  Y02B20/341

    摘要： The present disclosure discloses a light emitting element driving circuit. In one embodiment the light emitting element driving circuit may comprise a power conversion circuit and a current balancing circuit. In other embodiment the light emitting element driving circuit may further comprise other modules integrated and interacting with the power conversion circuit and the current balancing circuit, such as fault detection and protection circuits, status indication circuits and phase-shift PWM dimming circuits. In other embodiment, the present disclosure further discloses a current balancing circuit. In other embodiment, the present disclosure further discloses a fault detection and protection circuit. In still other embodiment, the present disclosure further discloses a phase-shift PWM dimming circuit.

    摘要翻译： 本公开公开了一种发光元件驱动电路。 在一个实施例中，发光元件驱动电路可以包括功率转换电路和电流平衡电路。 在另一个实施例中，发光元件驱动电路还可以包括与功率转换电路和电流平衡电路集成并相互作用的其他模块，例如故障检测和保护电路，状态指示电路和相移PWM调光电路。 在另一实施例中，本公开还公开了一种电流平衡电路。 在其他实施例中，本公开还公开了一种故障检测和保护电路。 在另外的实施例中，本公开还公开了一种相移PWM调光电路。