公开(公告)号：US08093824B2

公开(公告)日：2012-01-10

申请号：US12483233

申请日：2009-06-11

申请人： Yong-Long Lee ,  Chin-Po Cheng

发明人： Yong-Long Lee ,  Chin-Po Cheng

IPC分类号： H05B37/00

CPC分类号： H05B41/2827 ,  G09G3/3406 ,  G09G2330/021 ,  G09G2330/04 ,  G09G2330/12 ,  H05B41/2855

摘要： A backlight driving system comprises an inverter module, a current balance module, a feedback module and an open-lamp protection detection module. The inverter module provides electrical signals to a plurality of lamps. The current balance module balances currents flowing through the plurality of lamps. The feedback module detects the current of the backlight and generates a feedback signal to the invert module accordingly. The open-lamp protection detection module detects voltage variations of the feedback transformer and generates a detection signal to the inverter module accordingly. The inverter module regulates the currents flowing through the plurality of lamps according to the feedback signal and determines one or more of the plurality of lamps are faulty according to the detection signal generated by the open-lamp protection detection module, and stops providing the electrical signals to the plurality of lamps.

摘要翻译： 背光驱动系统包括逆变器模块，电流平衡模块，反馈模块和开路灯保护检测模块。 逆变器模块向多个灯提供电信号。 当前的平衡模块平衡流过多个灯的电流。 反馈模块检测背光的电流，并相应地向反相模块生成反馈信号。 开路灯保护检测模块检测反馈变压器的电压变化，并相应地向逆变器模块产生检测信号。 逆变器模块根据反馈信号调节流过多个灯的电流，并且根据由开路灯保护检测模块产生的检测信号确定多个灯中的一个或多个是故障的，并且停止提供电信号 到多个灯。

公开(公告)号：US20110260644A1

公开(公告)日：2011-10-27

申请号：US12826600

申请日：2010-06-29

申请人： YONG-LONG LEE ,  CHIN-PO CHENG

发明人： YONG-LONG LEE ,  CHIN-PO CHENG

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0827 ,  Y02B20/347

摘要： A light emitting diode (LED) backlight driving system drives at least one LED array, and includes a boost power stage circuit, a controller, a multi-channel constant current driving circuit, a voltage dividing circuit, and an offset voltage generating circuit. The boost power stage circuit boosts direct current (DC) power signals to output driving voltage to drive the LED array. The multi-channel constant current driving circuit controls current flowing through the LED array, and outputs regulating voltage to the controller to regulate the driving voltage. The voltage dividing circuit divides the driving voltage to generate feedback voltage to send to the controller. The offset voltage generating circuit generates offset voltage to modify the feedback voltage according to at least one mode selection signal. The controller controls the driving voltage according to the modified feedback voltage and the regulating voltage.

摘要翻译： 发光二极管（LED）背光驱动系统驱动至少一个LED阵列，并且包括升压功率级电路，控制器，多通道恒流驱动电路，分压电路和偏移电压产生电路。 升压功率级电路提升直流（DC）电源信号，输出驱动电压驱动LED阵列。 多通道恒流驱动电路控制流经LED阵列的电流，并向控制器输出调节电压以调节驱动电压。 分压电路对驱动电压进行分压，生成反馈电压，发送给控制器。 偏移电压产生电路根据至少一个模式选择信号产生偏移电压以修改反馈电压。 控制器根据修正的反馈电压和调节电压来控制驱动电压。

公开(公告)号：US20110101865A1

公开(公告)日：2011-05-05

申请号：US12772925

申请日：2010-05-03

申请人： CHIN-PO CHENG ,  YONG-LONG LEE

发明人： CHIN-PO CHENG ,  YONG-LONG LEE

IPC分类号： H05B41/36

CPC分类号： H05B41/2822 ,  H01F38/10

摘要： A multi-lamp driving system includes a power supply and at least one balance transformer. Each balance transformer includes two cores, two primary windings, two secondary windings and two protection windings. Each primary winding is wrapped around a core and serially connected to a lamp to form a first circuit branch in parallel connection with each other. The first circuit branches are powered by the power supply. The Each secondary winding is wrapped around a core and connected to a primary winding. The two secondary windings are connected in series to form a short circuit loop. Each of the protection windings is wrapped around a core and connected to a primary winding. The protection windings are wrapped in opposite directions and connected in series to form a second circuit branch. The second circuit branch outputs voltage signals to the power supply when induced voltages crossing the protection windings are unequal.

摘要翻译： 多灯驱动系统包括电源和至少一个平衡变压器。 每个平衡变压器包括两个磁芯，两个初级绕组，两个次级绕组和两个保护绕组。 每个初级绕组缠绕在芯上并串联连接到灯以形成彼此并联连接的第一电路支路。 第一个电路分支由电源供电。 每个次级绕组缠绕在芯上并连接到初级绕组。 两个次级绕组串联连接形成短路回路。 每个保护绕组缠绕在芯上并连接到初级绕组。 保护绕组缠绕在相反的方向并串联连接以形成第二电路支路。 当穿过保护绕组的感应电压不相等时，第二电路支路向电源输出电压信号。

公开(公告)号：US20100181931A1

公开(公告)日：2010-07-22

申请号：US12416163

申请日：2009-04-01

申请人： CHIEN-HUNG CHEN ,  CHIN-PO CHENG ,  YONG-LONG LEE

发明人： CHIEN-HUNG CHEN ,  CHIN-PO CHENG ,  YONG-LONG LEE

IPC分类号： H05B41/36

CPC分类号： H05B41/282 ,  H05B41/2827

摘要： A multi-lamp driving circuit for driving a plurality of lamps includes at least one power stage circuit, at least one transformer circuit, a balancing circuit, and a control circuit. The power stage circuit converts external electrical signals to alternating current (AC) signals. The transformer circuit is connected to the power stage circuit, to convert the AC signals to high voltage electrical signals capable of driving the lamps. The balancing circuit balances current flowing through the lamps, and includes a capacitor balancing circuit and a transformer balancing circuit. The control circuit is connected between the balancing circuit and the power stage circuit, to control output of the power stage circuit according to variation of the current flowing through the lamps.

摘要翻译： 用于驱动多个灯的多灯驱动电路包括至少一个功率级电路，至少一个变压器电路，平衡电路和控制电路。 功率级电路将外部电信号转换为交流（AC）信号。 变压器电路连接到功率级电路，将交流信号转换成能够驱动灯的高电压电信号。 平衡电路平衡流过灯的电流，并且包括电容器平衡电路和变压器平衡电路。 控制电路连接在平衡电路和功率级电路之间，根据流过灯的电流的变化来控制功率级电路的输出。

公开(公告)号：US20100181920A1

公开(公告)日：2010-07-22

申请号：US12483233

申请日：2009-06-11

申请人： YONG-LONG LEE ,  CHIN-PO CHENG

发明人： YONG-LONG LEE ,  CHIN-PO CHENG

IPC分类号： H05B41/14

CPC分类号： H05B41/2827 ,  G09G3/3406 ,  G09G2330/021 ,  G09G2330/04 ,  G09G2330/12 ,  H05B41/2855

摘要： A backlight driving system comprises an inverter module, a current balance module, a feedback module and an open-lamp protection detection module. The inverter module provides electrical signals to a plurality of lamps. The current balance module balances currents flowing through the plurality of lamps. The feedback module detects the current of the backlight and generates a feedback signal to the invert module accordingly. The open-lamp protection detection module detects voltage variations of the feedback transformer and generates a detection signal to the inverter module accordingly. The inverter module regulates the currents flowing through the plurality of lamps according to the feedback signal and determines one or more of the plurality of lamps are faulty according to the detection signal generated by the open-lamp protection detection module, and stops providing the electrical signals to the plurality of lamps.

摘要翻译： 背光驱动系统包括逆变器模块，电流平衡模块，反馈模块和开路灯保护检测模块。 逆变器模块向多个灯提供电信号。 当前的平衡模块平衡流过多个灯的电流。 反馈模块检测背光的电流，并相应地向反相模块生成反馈信号。 开路灯保护检测模块检测反馈变压器的电压变化，并相应地向逆变器模块产生检测信号。 逆变器模块根据反馈信号调节流过多个灯的电流，并且根据由开路灯保护检测模块产生的检测信号确定多个灯中的一个或多个是故障的，并且停止提供电信号 到多个灯。

公开(公告)号：US08436540B2

公开(公告)日：2013-05-07

申请号：US13110006

申请日：2011-05-18

申请人： Chin-Po Cheng ,  Yong-Long Lee

发明人： Chin-Po Cheng ,  Yong-Long Lee

IPC分类号： H05B37/02

CPC分类号： G09G3/342 ,  G09G3/2096 ,  G09G2310/024 ,  G09G2320/064 ,  G09G2320/0653

摘要： A multi-lamp driving system includes a pulse width modulation (PWM) controller, transformers, a current difference detection circuit, a lighting detection circuit, a frequency scanning detection circuit, a frequency regulating circuit, and a duty cycle regulating circuit. The current difference detection circuit detects difference among current flowing through lamps to determine if the current fluctuates. The lighting detection circuit determines if the lamps are lit according to the current, and generates a lighting indication signal after the lamps are lit. The frequency scanning detection circuit determines if the multi-lamp driving system is in a frequency scanning process according to the lighting indication signal, and generates a frequency scanning indication signal if the multi-lamp driving system is in the frequency scanning process. The duty cycle regulating circuit regulates duty cycles of the PWM signals upon the condition that the current fluctuates and the multi-lamp driving system is in the frequency scanning process.

摘要翻译： 多灯驱动系统包括脉宽调制（PWM）控制器，变压器，电流差检测电路，点亮检测电路，频率扫描检测电路，频率调节电路和占空比调节电路。 电流差检测电路检测流过灯的电流之间的差异，以确定电流是否波动。 照明检测电路根据电流确定灯是否点亮，并且在灯被点亮之后产生点亮指示信号。 频率扫描检测电路根据点亮指示信号来判断多灯驱动系统是否处于频率扫描处理，如果多灯驱动系统处于频率扫描处理中，则产生频率扫描指示信号。 占空比调节电路在电流波动，多灯驱动系统处于频率扫描过程中调节PWM信号的占空比。

公开(公告)号：US20130021326A1

公开(公告)日：2013-01-24

申请号：US13308556

申请日：2011-12-01

申请人： CHENG-HUNG TSAI ,  CHIN-PO CHENG

发明人： CHENG-HUNG TSAI ,  CHIN-PO CHENG

IPC分类号： G06T15/00 ,  G06F3/038 ,  G09G3/32 ,  G09G5/00

CPC分类号： G09G3/32 ,  G09G2330/027 ,  G09G2330/028 ,  H04N13/356

摘要： A light emitting diode (LED) driving system driving a LED array of a display device includes a microcontroller, a control circuit, a pulse width modulator (PWM) controller, a first driving circuit, a second driving circuit, a first converter circuit and a second converter circuit. The microcontroller outputs a first signal when the display device is in a three dimension (3D) mode. The control circuit generates and output a 3D control signal upon receiving the first signal. The second converter circuit converts a direct current power into a second direct current voltage when the display device is in the 3D mode, and the second converter circuit stops working when the display device is in a two dimension mode.

摘要翻译： 驱动显示装置的LED阵列的发光二极管（LED）驱动系统包括微控制器，控制电路，脉冲宽度调制器（PWM）控制器，第一驱动电路，第二驱动电路，第一转换器电路和 第二转换器电路。 当显示设备处于三维（3D）模式时，微控制器输出第一信号。 控制电路在接收到第一信号时产生并输出3D控制信号。 当显示装置处于3D模式时，第二转换器电路将直流电转换成第二直流电压，并且当显示装置处于二维模式时，第二转换器电路停止工作。

公开(公告)号：US20120235571A1

公开(公告)日：2012-09-20

申请号：US13110006

申请日：2011-05-18

申请人： CHIN-PO CHENG ,  YONG-LONG LEE

发明人： CHIN-PO CHENG ,  YONG-LONG LEE

IPC分类号： H05B37/02

CPC分类号： G09G3/342 ,  G09G3/2096 ,  G09G2310/024 ,  G09G2320/064 ,  G09G2320/0653

摘要： A multi-lamp driving system includes a pulse width modulation (PWM) controller, transformers, a current difference detection circuit, a lighting detection circuit, a frequency scanning detection circuit, a frequency regulating circuit, and a duty cycle regulating circuit. The current difference detection circuit detects difference among current flowing through lamps to determine if the current fluctuates. The lighting detection circuit determines if the lamps are lit according to the current, and generates a lighting indication signal after the lamps are lit. The frequency scanning detection circuit determines if the multi-lamp driving system is in a frequency scanning process according to the lighting indication signal, and generates a frequency scanning indication signal if the multi-lamp driving system is in the frequency scanning process. The duty cycle regulating circuit regulates duty cycles of the PWM signals upon the condition that the current fluctuates and the multi-lamp driving system is in the frequency scanning process.

摘要翻译： 多灯驱动系统包括脉宽调制（PWM）控制器，变压器，电流差检测电路，点亮检测电路，频率扫描检测电路，频率调节电路和占空比调节电路。 电流差检测电路检测流过灯的电流之间的差异，以确定电流是否波动。 照明检测电路根据电流确定灯是否点亮，并且在灯被点亮之后产生点亮指示信号。 频率扫描检测电路根据点亮指示信号来判断多灯驱动系统是否处于频率扫描处理，如果多灯驱动系统处于频率扫描处理中，则产生频率扫描指示信号。 占空比调节电路在电流波动，多灯驱动系统处于频率扫描过程中调节PWM信号的占空比。

公开(公告)号：US20120320023A1

公开(公告)日：2012-12-20

申请号：US13283606

申请日：2011-10-28

申请人： CHENG-HUNG TSAI ,  CHIN-PO CHENG

发明人： CHENG-HUNG TSAI ,  CHIN-PO CHENG

IPC分类号： G09G3/32 ,  G06F3/038

CPC分类号： G09G3/003 ,  G09G3/3406 ,  G09G2320/0633 ,  H04N13/356 ,  H04N13/398

摘要： A light emitting diode (LED) driving system driving a LED array of a display device includes a converter circuit, a pulse width modulator (PWM) controller, a 2D parameter circuit, a 3D parameter circuit and a microcontroller. The 3D parameter circuit outputs 3D parameter control signals when the display device is in a 3D mode, and stops from generating the 3D parameter control signals when the display device is in a 2D mode. The PWM controller outputs PWM signals to control the converter circuit according to outputs of the 2D parameter circuit and the 3D parameter circuit.

摘要翻译： 驱动显示装置的LED阵列的发光二极管（LED）驱动系统包括转换器电路，脉冲宽度调制器（PWM）控制器，2D参数电路，3D参数电路和微控制器。 当3D显示设备处于3D模式时，3D参数电路输出3D参数控制信号，并且当显示设备处于2D模式时停止生成3D参数控制信号。 PWM控制器输出PWM信号，根据2D参数电路和3D参数电路的输出控制转换器电路。

公开(公告)号：US08310164B2

公开(公告)日：2012-11-13

申请号：US12772925

申请日：2010-05-03

申请人： Chin-Po Cheng ,  Yong-Long Lee

发明人： Chin-Po Cheng ,  Yong-Long Lee

IPC分类号： H05B39/00

CPC分类号： H05B41/2822 ,  H01F38/10

摘要： A multi-lamp driving system includes a power supply and at least one balance transformer. Each balance transformer includes two cores, two primary windings, two secondary windings and two protection windings. Each primary winding is wrapped around a core and serially connected to a lamp to form a first circuit branch in parallel connection with each other. The first circuit branches are powered by the power supply. The Each secondary winding is wrapped around a core and connected to a primary winding. The two secondary windings are connected in series to form a short circuit loop. Each of the protection windings is wrapped around a core and connected to a primary winding. The protection windings are wrapped in opposite directions and connected in series to form a second circuit branch. The second circuit branch outputs voltage signals to the power supply when induced voltages crossing the protection windings are unequal.

摘要翻译： 多灯驱动系统包括电源和至少一个平衡变压器。 每个平衡变压器包括两个磁芯，两个初级绕组，两个次级绕组和两个保护绕组。 每个初级绕组缠绕在芯上并串联连接到灯以形成彼此并联连接的第一电路支路。 第一个电路分支由电源供电。 每个次级绕组缠绕在芯上并连接到初级绕组。 两个次级绕组串联连接形成一个短路回路。 每个保护绕组缠绕在芯上并连接到初级绕组。 保护绕组缠绕在相反的方向并串联连接以形成第二电路支路。 当穿过保护绕组的感应电压不相等时，第二电路支路向电源输出电压信号。