公开(公告)号：US07919936B2

公开(公告)日：2011-04-05

申请号：US12221648

申请日：2008-08-05

Applicant: Da Liu ,  Yung-Lin Lin

Inventor： Da Liu ,  Yung-Lin Lin

IPC: H05B37/02

CPC classification number: H05B33/0827

Abstract: There is provided a driving circuit for powering a plurality of light sources. The driving circuit includes a power converter, a plurality of switching regulators and a plurality of switching balance controllers. The power converter is operable for receiving an input voltage and for providing a regulated voltage to the light sources. The switching regulators are operable for adjusting forward voltages of the light sources respectively. The switching balance controllers are operable for generating pulse modulation signals to control the switching regulators respectively.

Abstract translation: 提供了用于为多个光源供电的驱动电路。 驱动电路包括功率转换器，多个开关调节器和多个开关平衡控制器。 功率转换器可操作用于接收输入电压并向光源提供调节电压。 开关调节器可操作用于分别调节光源的正向电压。 开关平衡控制器可用于产生脉冲调制信号以分别控制开关稳压器。

公开(公告)号：US20110074839A1

公开(公告)日：2011-03-31

申请号：US12962030

申请日：2010-12-07

Applicant: Da Liu ,  Yung-Lin Lin

Inventor： Da Liu ,  Yung-Lin Lin

IPC: G09G5/10 ,  H05B37/02 ,  G09G3/36

CPC classification number: H05B33/0827 ,  G09G3/3413 ,  G09G3/342 ,  G09G2320/0233 ,  G09G2320/0633 ,  G09G2320/0666 ,  G09G2330/021 ,  H05B33/0815

Abstract: A method according to one embodiment may include supplying power to an LED array having at least a first string of LEDs and a second string of LEDs coupled in parallel, each of the strings includes at least two LEDs. The method of this embodiment may also include comparing a first feedback signal from the first string of LEDs and a second feedback signal from the second string of LEDs. The first feedback signal is proportional to current in said first string of LEDs and said second feedback signal is proportional to current in said second string of LEDs. The method of this embodiment may also include controlling a voltage drop of at least the first string of LEDs to adjust the current of the first string of LEDs relative to the second string of LEDs, based on, at least in part, the comparing of the first and second feedback signals. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.

Abstract translation: 根据一个实施例的方法可以包括向具有至少第一串LED串的LED阵列供电，并且并联耦合的第二串LED串联，每个串包括至少两个LED。 该实施例的方法还可以包括比较来自第一串LED的第一反馈信号和来自第二LED串的第二反馈信号。 所述第一反馈信号与所述第一串LED中的电流成比例，并且所述第二反馈信号与所述第二LED串中的电流成比例。 该实施例的方法还可以包括：至少部分地基于比较来控制至少第一串LED的电压降，以相对于第二LED串来调节第一串LED的电流 第一和第二反馈信号。 当然，在不偏离本实施例的情况下，可以进行许多替代，变化和修改。

公开(公告)号：US20100320934A1

公开(公告)日：2010-12-23

申请号：US12817388

申请日：2010-06-17

Applicant: Da Liu ,  Ching-Chuan Kuo ,  Sheng-Tai Lee

Inventor： Da Liu ,  Ching-Chuan Kuo ,  Sheng-Tai Lee

IPC: H05B41/36 ,  G05F5/00

CPC classification number: H02M1/4258 ,  H05B33/0815 ,  Y02B70/126

Abstract: A circuit for driving a load includes a power line, converter circuitry, and a controller. The power line is operable for providing an input current and an input voltage. The converter circuitry coupled to the power line is operable for converting the input voltage to a regulated voltage to drive the load, and for providing a current detection signal indicating whether a converter current flowing through the converter circuitry drops to a predetermined level. The controller coupled to the converter circuitry is operable for correcting a power factor of the circuit based on the current detection signal and the input voltage such that a waveform of the input current follows a waveform of the input voltage.

Abstract translation: 用于驱动负载的电路包括电力线，转换器电路和控制器。 电力线可操作用于提供输入电流和输入电压。 耦合到电力线的转换器电路可操作用于将输入电压转换为调节电压以驱动负载，并且用于提供指示流过转换器电路的转换器电流是否下降到预定电平的电流检测信号。 耦合到转换器电路的控制器可操作用于基于电流检测信号和输入电压校正电路的功率因数，使得输入电流的波形遵循输入电压的波形。

公开(公告)号：US20100033109A1

公开(公告)日：2010-02-11

申请号：US12221648

申请日：2008-08-05

Applicant: Da Liu ,  Yung-Lin Lin

Inventor： Da Liu ,  Yung-Lin Lin

IPC: H05B37/02

CPC classification number: H05B33/0827

Abstract: There is provided a driving circuit for powering a plurality of light sources. The driving circuit includes a power converter, a plurality of switching regulators and a plurality of switching balance controllers. The power converter is operable for receiving an input voltage and for providing a regulated voltage to the light sources. The switching regulators are operable for adjusting forward voltages of the light sources respectively. The switching balance controllers are operable for generating pulse modulation signals to control the switching regulators respectively.

Abstract translation: 提供了用于为多个光源供电的驱动电路。 驱动电路包括功率转换器，多个开关调节器和多个开关平衡控制器。 功率转换器可操作用于接收输入电压并向光源提供调节电压。 开关调节器可操作用于分别调节光源的正向电压。 开关平衡控制器可用于产生脉冲调制信号以分别控制开关稳压器。

公开(公告)号：US20080137384A1

公开(公告)日：2008-06-12

申请号：US11637421

申请日：2006-12-11

Applicant: Yung-Lin Lin ,  Da Liu

Inventor： Yung-Lin Lin ,  Da Liu

IPC: H02M7/537 ,  G09G3/36

CPC classification number: H02M3/33507 ,  H02M7/48

Abstract: A DC/AC inverter and method thereof is disclosed. The DC/AC inverter for driving a load includes a DC power supply for supplying a DC input voltage, a converter circuit coupled to the DC power supply which converts the DC input voltage into an AC signal used to drive the load, and a control circuit coupled to the converter circuit which sets a frequency of the AC signal. The control circuit is further capable of operating the DC/AC inverter in a fixed frequency mode and in a variable frequency mode in accordance with the DC input voltage and the load condition.

Abstract translation: 公开了一种DC / AC逆变器及其方法。 用于驱动负载的DC / AC逆变器包括用于提供DC输入电压的DC电源，耦合到DC电源的转换器电路，其将DC输入电压转换为用于驱动负载的AC信号，以及控制电路 耦合到设置AC信号的频率的转换器电路。 控制电路还能够根据直流输入电压和负载条件以固定频率模式和变频模式操作DC / AC逆变器。

公开(公告)号：US20080054826A1

公开(公告)日：2008-03-06

申请号：US11879991

申请日：2007-07-18

Applicant: Yung-Lin Lin ,  Da Liu

Inventor： Yung-Lin Lin ,  Da Liu

IPC: H05B41/36

CPC classification number: H05B41/2855 ,  Y02B20/186 ,  Y10S315/07

Abstract: The present invention provides a driving circuit with protection function for driving a set of external electrode fluorescent lamps (EEFL). The drive circuit includes: a transformer connected to the set of EEFLs; a switching network connected to the transformer which delivers power to the transformer; a sensing circuit connected to the set of EEFLs which detects disconnection if one light source is disconnected; and a controller connected to the switching network which controls the switching network to reduce the total current supplied to the EEFLs which remain connected, if the sensing circuit detects that one EEFL is disconnected. Appropriate protection can therefore be implemented when the EEFL is disconnected on one end or both ends.

Abstract translation: 本发明提供一种具有用于驱动一组外部电极荧光灯（EEFL）的保护功能的驱动电路。 驱动电路包括：连接到该组EEFL的变压器; 连接到向变压器供电的变压器的开关网络; 连接到一组EEFL的感测电路，如果一个光源断开则检测断开; 以及连接到交换网络的控制器，如果感测电路检测到一个EEFL被断开，则控制交换网络以减少提供给保持连接的EEFL的总电流。 因此，当EEFL在一端或两端断开时，可以实现适当的保护。

公开(公告)号：US07253569B2

公开(公告)日：2007-08-07

申请号：US11216650

申请日：2005-08-31

Applicant: Da Liu

Inventor： Da Liu

IPC: G05F1/00

CPC classification number: H05B41/2824 ,  Y10S315/07

Abstract: A method according to one embodiment may include supplying power to plurality of External Electrode Fluorescent Lamps (EEFLs). The method of this embodiment may also include generating signals proportional to the voltage of each EEFL. The method of this embodiment may also include generating a feedback signal indicative of the state of one or more of the plurality of EEFLs based on, at least in part, the value of at least one signal proportional to the voltage of each EEFL. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.

Abstract translation: 根据一个实施例的方法可以包括向多个外部电极荧光灯（EEFL）供电。 该实施例的方法还可以包括产生与每个EEFL的电压成比例的信号。 该实施例的方法还可以包括至少部分地基于与每个EEFL的电压成比例的至少一个信号的值来产生指示多个EEFL中的一个或多个的状态的反馈信号。 当然，在不偏离本实施例的情况下，可以进行许多替代，变化和修改。

公开(公告)号：US07248240B2

公开(公告)日：2007-07-24

申请号：US11516474

申请日：2006-09-05

Applicant: Yung-Lin Lin ,  Da Liu

Inventor： Yung-Lin Lin ,  Da Liu

IPC: G09G3/36 ,  G09G5/00

CPC classification number: H05B41/2813 ,  Y02B20/22

Abstract: The present invention provides a driving circuit with protection function for driving a set of external electrode fluorescent lamps (EEFL) . The drive circuit includes, a transformer connected to the set of EEFLs, a switching network connected to the transformer which delivers power to the transformer, a sensing circuit connected to the set of EEFLs which detects disconnection if one light source is disconnected, and a controller connected to the switching network which controls the switching network to reduce the total current supplied to the EEFLs which remain connected, if the sensing circuit detects that one EEFL is disconnected. Appropriate protection can therefore be implemented when the EEFL is disconnected on one end or both ends.

Abstract translation: 本发明提供一种具有用于驱动一组外部电极荧光灯（EEFL）的保护功能的驱动电路。 所述驱动电路包括连接到所述一组EEFL的变压器，连接到所述变压器的交换网络，所述变压器向所述变压器供电;连接到所述一组EEFL的感测电路，其在一个光源被断开时检测断开;以及控制器 连接到控制交换网络的交换网络，以便如果感测电路检测到一个EEFL断开，则减少提供给保持连接的EEFL的总电流。 因此，当EEFL在一端或两端断开时，可以实现适当的保护。

公开(公告)号：US20070047276A1

公开(公告)日：2007-03-01

申请号：US11216912

申请日：2005-08-31

Applicant: Yung-Lin Lin ,  Da Liu

Inventor： Yung-Lin Lin ,  Da Liu

IPC: H02M3/24

CPC classification number: H02M1/42 ,  H05B41/282 ,  Y02B20/183 ,  Y02B70/12

Abstract: A method according to one embodiment may include generating, by a controller, a plurality of control signals to control operations of inverter circuitry to generate an AC signal from a DC signal. The method of this embodiment may also include using the control signals generated by the controller to also control operations of power factor correction (PFC) circuitry, via the inverter circuitry, to enable the PFC circuitry to generate power factor correction of an input source coupled to the PFC circuitry and the inverter circuitry. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.

Abstract translation: 根据一个实施例的方法可以包括由控制器产生多个控制信号以控制逆变器电路的操作以从DC信号产生AC信号。 该实施例的方法还可以包括使用由控制器产生的控制信号也经由逆变器电路来控制功率因数校正（PFC）电路的操作，以使PFC电路能够产生耦合到 PFC电路和逆变器电路。 当然，在不偏离本实施例的情况下，可以进行许多替代，变化和修改。

公开(公告)号：US07126289B2

公开(公告)日：2006-10-24

申请号：US10923188

申请日：2004-08-20

Applicant: Yung-Lin Lin ,  Da Liu

Inventor： Yung-Lin Lin ,  Da Liu

IPC: H05B37/02

CPC classification number: H05B41/2813 ,  Y02B20/22

Abstract: The present invention provides a driving circuit with protection function for driving a set of external electrode fluorescent lamps (EEFL). The drive circuit includes a transformer connected to the set of EEFLs, a switching network connected to the transformer which delivers power to the transformer, a sensing circuit connected to the set of EEFLs which detects disconnection if one light source is disconnected, and a controller connected to the switching network which controls the switching network to reduce the total current supplied to the EEFLs which remain connected, if the sensing circuit detects that one EEFL is disconnected. Appropriate protection can therefore be implemented when the EEFL is disconnected on one end or both ends.

Abstract translation: 本发明提供一种具有用于驱动一组外部电极荧光灯（EEFL）的保护功能的驱动电路。 所述驱动电路包括连接到所述一组EEFL的变压器，连接到所述变压器的开关网络，所述变压器向所述变压器供电;连接到所述一组EEFL的感测电路，其中如果一个光源断开，则检测断开连接;以及控制器连接 如果感测电路检测到一个EEFL断开，则控制切换网络的交换网络减少提供给保持连接的EEFL的总电流。 因此，当EEFL在一端或两端断开时，可以实现适当的保护。