公开(公告)号：USRE42182E1

公开(公告)日：2011-03-01

申请号：US11174421

申请日：2005-07-01

Applicant: Chung-Che Yu

Inventor： Chung-Che Yu

IPC: G09G3/36

CPC classification number: H05B41/3927 ,  H05B41/2828 ,  Y02B20/186

Abstract: A multi-lamps LCD back-light control circuit comprises a control unit, an full bridge switch, a resonance network circuit, a voltage transformer, a lamp, and a feedback network. A constant operating frequency and a pulse width modulation (PWM) feedback are used to control the CCFL current. The back-light control circuit is such that a power switch of the full bridge switch outputs a duty cycle that is controlled and changed via a PWM controller of the control unit, while a ground switch of the full bridge switch outputs a constant duty cycle controllable above 50%.

Abstract translation: 多灯LCD背光控制电路包括控制单元，全桥开关，共振网络电路，变压器，灯和反馈网络。 使用恒定工作频率和脉冲宽度调制（PWM）反馈来控制CCFL电流。 背光控制电路使得全桥开关的电源开关输出通过控制单元的PWM控制器控制和改变的占空比，而全桥开关的接地开关输出恒定的占空比可控 超过50％。

公开(公告)号：US07486103B2

公开(公告)日：2009-02-03

申请号：US11734423

申请日：2007-04-12

Applicant: Shian-Sung Shiu ,  Chung-Che Yu ,  Kuo-Wei Peng

Inventor： Shian-Sung Shiu ,  Chung-Che Yu ,  Kuo-Wei Peng

IPC: H03K17/16

CPC classification number: H03K19/00361

Abstract: A switching system capable of reducing the noise of the output signal is provided. The switching system includes a first switch and a second switch, wherein the first switch conducts a first signal according to a first control signal; the second switch conducts a second signal according to a second control signal. And the voltages of the first control signal and the second control signal are restricted within a voltage interval to reduce the noise produced during the switching of the switches.

Abstract translation: 提供了能够降低输出信号的噪声的开关系统。 开关系统包括第一开关和第二开关，其中第一开关根据第一控制信号传导第一信号; 第二开关根据第二控制信号传导第二信号。 并且第一控制信号和第二控制信号的电压被限制在电压间隔内，以减少开关切换期间产生的噪声。

公开(公告)号：US07292014B2

公开(公告)日：2007-11-06

申请号：US11307131

申请日：2006-01-25

Applicant: Li-Min Lee ,  Chung-Che Yu

Inventor： Li-Min Lee ,  Chung-Che Yu

IPC: G05F1/40 ,  H02M1/12

CPC classification number: H03F3/217 ,  H03F2200/78

Abstract: A loading system and a controller thereof are disclosed. The controller includes an adjustable triangle wave generator, an error signal generator, and a pulse signal generator. The triangle-wave generator is adapted to perform an amplitude and frequency operation according to the reference voltage and the feedback voltage for generating an amplitude-frequency adjustable triangle wave according to a variation of the feedback voltage. The error signal generator is adapted to perform an error operation according to the feedback voltage and the reference voltage for outputting an error signal. The pulse signal generator is adapted to receive and compare the error signal and the amplitude-frequency adjustable triangle wave for outputting a pulse controlling signal for the loading system.

Abstract translation: 公开了一种装载系统及其控制器。 控制器包括可调三角波发生器，误差信号发生器和脉冲信号发生器。 三角波发生器适于根据参考电压和反馈电压执行振幅和频率运行，以根据反馈电压的变化产生振幅可调三角波。 误差信号发生器适于根据反馈电压和参考电压执行误差操作，以输出误差信号。 脉冲信号发生器适于接收和比较误差信号和幅频可调三角波，用于输出加载系统的脉冲控制信号。

公开(公告)号：US20070222391A1

公开(公告)日：2007-09-27

申请号：US11609576

申请日：2006-12-12

Applicant: Li-Min Lee ,  Che-Nan Tien ,  Chung-Che Yu

Inventor： Li-Min Lee ,  Che-Nan Tien ,  Chung-Che Yu

IPC: B60Q1/02

CPC classification number: H05B33/0827

Abstract: The invention provides an LED current balancing circuit, comprising a first and a second LED set coupled to a voltage source, a first transistor, and a second transistor. The first LED set comprises a first loader. The first transistor and the second transistor form a current balancing circuit for adjusting currents passing through the first and second LED sets.

Abstract translation: 本发明提供一种LED电流平衡电路，包括耦合到电压源的第一和第二LED组，第一晶体管和第二晶体管。 第一LED组包括第一装载机。 第一晶体管和第二晶体管形成用于调节通过第一和第二LED组的电流的电流平衡电路。

公开(公告)号：US07242153B2

公开(公告)日：2007-07-10

申请号：US10907742

申请日：2005-04-14

Applicant: Chung-che Yu ,  Chien-Cheng Yang

Inventor： Chung-che Yu ,  Chien-Cheng Yang

IPC: G05F1/00

CPC classification number: H05B41/2825 ,  G09G3/3406 ,  G09G2330/021 ,  G09G2330/04 ,  Y10S315/04

Abstract: A pulse width modulation inverter circuit is provided. The circuit includes a power switch driver, a power switch, a transformer unit, a feedback detector unit, and a voltage control oscillator. The circuit is electrically coupled to the DC power source to drive a load. The circuit adjusts the pulse width of the signal outputted from the power switch driver according to the voltage inputted to the DC power source. Accordingly, the circuit can maintain a fixed input voltage received by the fluorescent tube. Thus, the high input voltage but low output phenomenon can be avoided.

Abstract translation: 提供了一种脉宽调制逆变器电路。 该电路包括电源开关驱动器，电源开关，变压器单元，反馈检测器单元和电压控制振荡器。 电路电连接到直流电源以驱动负载。 该电路根据输入到DC电源的电压来调整从电源开关驱动器输出的信号的脉冲宽度。 因此，电路可以保持由荧光管接收的固定的输入电压。 因此，可以避免高输入电压但低输出现象。

公开(公告)号：US20070115057A1

公开(公告)日：2007-05-24

申请号：US11308019

申请日：2006-03-03

Applicant: Chung-Che Yu ,  Shian-Sung Shiu ,  Li-Min Lee

Inventor： Chung-Che Yu ,  Shian-Sung Shiu ,  Li-Min Lee

IPC: H03F3/45

CPC classification number: H03F3/45197 ,  H03F3/45632 ,  H03F2203/45101 ,  H03F2203/45352 ,  H03F2203/45641 ,  H03F2203/45646 ,  H03F2203/45681 ,  H03F2203/45726 ,  H03G1/0088

Abstract: A variable gain device having higher linearity and wider gain range is provided. The variable gain device includes a transduction unit for generating an output current, a control unit for adjusting the current gain of the gain amplifying unit according to a gain control signal, a gain amplifying unit receiving the current signal and generating a gain adjustable current according to the current gain of the control unit, an output DC level control unit controlling the DC level of the output signal of the variable gain device, and an output unit generating an output signal according to the signals output by the output DC level control unit and the gain amplifying unit.

Abstract translation: 提供具有更高线性度和更宽增益范围的可变增益器件。 可变增益装置包括用于产生输出电流的转换单元，用于根据增益控制信号调整增益放大单元的电流增益的控制单元，接收当前信号的增益放大单元，并根据 控制单元的当前增益，控制可变增益装置的输出信号的直流电平的输出直流电平控制单元和根据由输出直流电平控制单元输出的信号产生输出信号的输出单元， 增益放大单元。

公开(公告)号：US07129878B1

公开(公告)日：2006-10-31

申请号：US11155708

申请日：2005-06-16

Applicant: Shian Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu

Inventor： Shian Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu

IPC: H03M1/66

CPC classification number: H03M1/0612 ,  H03M1/785

Abstract: A digital to analog converter for an analog Liquid Crystal Display (LCD) includes a digital inlet, a latching circuitry, a voltage level shifter circuitry, a switching circuitry, and a resistance network with a resistance compensatory circuitry. The resistance network with the resistance compensatory circuitry is electrically connecting with the switching circuitry and adapted to regulate a pattern of the analog output signal so as to optimize the analog output signal. Specifically, the resistance network with a resistance compensatory circuitry is to produce the best linear conversion from the digital signal to the analog signal for use by the LCD.

Abstract translation: 用于模拟液晶显示器（LCD）的数模转换器包括数字入口，锁存电路，电压电平移位器电路，开关电路和具有电阻补偿电路的电阻网络。 具有电阻补偿电路的电阻网络与开关电路电连接并且适于调节模拟输出信号的模式，以优化模拟输出信号。 具体来说，具有电阻补偿电路的电阻网络是产生从数字信号到模拟信号的最佳线性转换，供LCD使用。

公开(公告)号：US20060203525A1

公开(公告)日：2006-09-14

申请号：US11431538

申请日：2006-05-11

Applicant: Chung-che Yu ,  Li-Min Lee ,  Shih-chung Huang ,  Chien-pang Hung ,  Chih-shun Lee

Inventor： Chung-che Yu ,  Li-Min Lee ,  Shih-chung Huang ,  Chien-pang Hung ,  Chih-shun Lee

IPC: H02M3/24

CPC classification number: H02M7/53871 ,  H05B41/2825 ,  H05B41/2828 ,  Y02B20/186 ,  Y02B70/1441

Abstract: A DC/AC inverter for transforming a DC power source to an AC power, which drives a load. The DC/AC inverter comprises a full-bridge switch circuitry, a resonant tank, a frequency generator and a driver circuit. The full-bridge switch circuitry is electrically connected to the DC power source to convert the DC voltage to a pulse signal. The full-bridge switch circuitry comprises a first power switch, a second power switch, a third power switch, and a fourth power switch. The resonant tank is electrically connected between the full-bridge switch circuitry and a load for boosting and filtering the pulse signal to generate an AC power supplied to the load. The frequency generator generates a pulse signal at one of at least two predetermined operating frequencies based on an operation state of the DC/AC inverter. The driver circuit is coupled to the frequency generator and provides four driving signals based on the pulse signal of the frequency generator for turning on and off the first power switch, the second power switch, the third power switch, and the fourth power switch respectively. The four driving signals have the same frequency, wherein the duty cycle of two of the four driving signals is smaller than 50% and the duty cycle of the other two of the four driving signals is larger than 50%.

Abstract translation: 一种DC / AC逆变器，用于将直流电源转换为驱动负载的交流电源。 DC / AC逆变器包括全桥开关电路，谐振箱，频率发生器和驱动电路。 全桥开关电路与DC电源电连接，将DC电压转换为脉冲信号。 全桥开关电路包括第一电源开关，第二电源开关，第三电源开关和第四电源开关。 谐振箱电连接在全桥开关电路和用于升压和滤波脉冲信号的负载之间以产生提供给负载的AC电力。 频率发生器基于DC / AC逆变器的操作状态，以至少两个预定工作频率中的一个产生脉冲信号。 驱动器电路耦合到频率发生器，并且基于频率发生器的脉冲信号提供四个驱动信号，以分别打开和关闭第一电源开关，第二电源开关，第三电源开关和第四电源开关。 四个驱动信号具有相同的频率，其中四个驱动信号中的两个的占空比小于50％，四个驱动信号中另外两个的占空比大于50％。

公开(公告)号：US20060197561A1

公开(公告)日：2006-09-07

申请号：US11307131

申请日：2006-01-25

Applicant: Li-Min Lee ,  Chung-Che Yu

Inventor： Li-Min Lee ,  Chung-Che Yu

IPC: H03K4/06

CPC classification number: H03F3/217 ,  H03F2200/78

Abstract: A loading system and a controller thereof are disclosed. The controller includes an adjustable triangle wave generator, an error signal generator, and a pulse signal generator. The triangle-wave generator is adapted to perform an amplitude and frequency operation according to the reference voltage and the feedback voltage for generating an amplitude-frequency adjustable triangle wave according to a variation of the feedback voltage. The error signal generator is adapted to perform an error operation according to the feedback voltage and the reference voltage for outputting an error signal. The pulse signal generator is adapted to receive and compare the error signal and the amplitude-frequency adjustable triangle wave for outputting a pulse controlling signal for the loading system.

Abstract translation: 公开了一种装载系统及其控制器。 控制器包括可调三角波发生器，误差信号发生器和脉冲信号发生器。 三角波发生器适于根据参考电压和反馈电压执行振幅和频率运行，以根据反馈电压的变化产生振幅可调三角波。 误差信号发生器适于根据反馈电压和参考电压执行误差操作，以输出误差信号。 脉冲信号发生器适于接收和比较误差信号和幅频可调三角波，用于输出加载系统的脉冲控制信号。

公开(公告)号：US20060164366A1

公开(公告)日：2006-07-27

申请号：US11042303

申请日：2005-01-24

Applicant: Chung-Che Yu ,  Wen-Chieh Chiang ,  Li-Min Lee

Inventor： Chung-Che Yu ,  Wen-Chieh Chiang ,  Li-Min Lee

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G3/3648 ,  G09G5/18 ,  G09G2330/06

Abstract: A controller for controlling at least two power circuits comprises a synchronous oscillator and a multi-phase PWM controller. The synchronous oscillator receives a timing signal for generating a synchronous control signal in which the timing signal is synchronous to a display signal. The multi-phase PWM controller receives the synchronous control signal for generating at least two PWM signals. The at least two PWM signals are coupled to the at least two power circuits for driving the at least two power circuits respectively. The at least two PWM signals are synchronous to the timing signal and with a phase shift between the at least two PWM signals.

Abstract translation: 用于控制至少两个电源电路的控制器包括同步振荡器和多相PWM控制器。 同步振荡器接收用于产生其中定时信号与显示信号同步的同步控制信号的定时信号。 多相PWM控制器接收用于产生至少两个PWM信号的同步控制信号。 所述至少两个PWM信号耦合到所述至少两个电源电路，以分别驱动所述至少两个电源电路。 所述至少两个PWM信号与所述定时信号同步并且在所述至少两个PWM信号之间具有相移。