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：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：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。

公开(公告)号：US20060038508A1

公开(公告)日：2006-02-23

申请号：US10923188

申请日：2004-08-20

Applicant: Yung-Lin Lin ,  Da Liu

Inventor： Yung-Lin Lin ,  Da Liu

IPC: H05B41/16

CPC classification number: H05B41/2813 ,  Y02B20/22

Abstract: The present invention provides a protection means for a driving circuit which drives a set of external electrode fluorescent lamps (EEFL). The driving circuit with protection function for driving a set of EEFLs consistent with the present invention 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: 本发明提供一种用于驱动一组外部电极荧光灯（EEFL）的驱动电路的保护装置。 具有与本发明一致的用于驱动一组EEFL的保护功能的驱动电路包括：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：US20110221795A1

公开(公告)日：2011-09-15

申请号：US13094384

申请日：2011-04-26

Applicant: Kaiping Ran ,  Da Liu ,  Yung Lin Lin

Inventor： Kaiping Ran ,  Da Liu ,  Yung Lin Lin

IPC: G09G5/10 ,  H05B37/03

CPC classification number: H05B33/0851 ,  G09G3/3406 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2320/0633 ,  G09G2320/064 ,  G09G2330/06 ,  H05B33/0818 ,  H05B33/0827 ,  Y02B20/346

Abstract: A backlight controller for driving multiple light emitting diode (LED) strings includes feedback circuitry, phase array circuitry, and encoder circuitry. The feedback circuitry generates multiple feedback signals indicative of currents flowing through the LED strings respectively. The encoder circuitry generates a code signal indicative of a total number of operative LED strings among the multiple LED strings based on the feedback signals. The phase array circuitry generates multiple saw tooth signals according to the code signal. A phase shift amount between two adjacent signals of the saw tooth signals is determined by the total number of the operative LED strings. The phase array circuitry compares each of the saw tooth signals with a dimming control signal to generate multiple phase shift signals so as to respectively control the operative LED strings.

Abstract translation: 用于驱动多个发光二极管（LED）串的背光控制器包括反馈电路，相位阵列电路和编码器电路。 反馈电路分别产生指示流过LED串的电流的多个反馈信号。 编码器电路基于反馈信号产生指示多个LED串中的操作LED串的总数的代码信号。 相位阵列电路根据码信号产生多个锯齿信号。 锯齿信号的两个相邻信号之间的相移量由可操作的LED串的总数确定。 相位阵列电路将每个锯齿信号与调光控制信号进行比较，以产生多个相移信号，以分别控制工作LED串。