公开(公告)号：US08044920B2

公开(公告)日：2011-10-25

申请号：US11906511

申请日：2007-10-02

Applicant: Chiawei Liao ,  Jing-Meng Liu

Inventor： Chiawei Liao ,  Jing-Meng Liu

IPC: G09G3/36

CPC classification number: H05B33/0827 ,  H05B33/0815

Abstract: The present invention discloses a backlight control circuit, and a method for controlling light emission devices. The method comprises: providing a plurality of light emission device paths connected in parallel; and setting a total current of the paths connected in parallel to a constant.

Abstract translation: 本发明公开了一种背光控制电路和控制发光装置的方法。 该方法包括：提供并联连接的多个发光装置路径; 并且将并联连接的路径的总电流设定为常数。

公开(公告)号：US20100301764A1

公开(公告)日：2010-12-02

申请号：US12768046

申请日：2010-04-27

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H05B37/02

CPC classification number: H05B33/0827 ,  H05B33/0818 ,  Y02B20/346

Abstract: The present invention discloses an LED controller with phase-shift dimming function and an LED Phase-Shift dimming circuit and method thereof. The LED controller includes: a power circuit for supplying DC power to multiple LED channels; and an LED phase-shift dimming circuit for receiving a pulse width modulation (PWM) input signal and generating multiple phase-shifted PWM signals with a shifted phase between one another, wherein a turn-ON timing of each of the multiple phase-shifted PWM signals follows a turn-OFF timing of a previous PWM signal which is the input PWM signal or a previous one of the multiple phase-shifted PWM signals.

Abstract translation: 本发明公开了一种具有相移调光功能的LED控制器和一个LED相移调光电路及其方法。 LED控制器包括：用于向多个LED通道提供直流电力的电源电路; 以及LED相移调光电路，用于接收脉冲宽度调制（PWM）输入信号并产生具有相互偏移的相位的多个相移PWM信号，其中多个相移PWM中的每一个的导通定时 信号遵循作为输入PWM信号或多个相移PWM信号中的先前PWM信号的先前PWM信号的关断定时。

公开(公告)号：US07838902B2

公开(公告)日：2010-11-23

申请号：US12385721

申请日：2009-04-17

Applicant: Liang-Pin Tai ,  Jing-Meng Liu ,  Hung-Der Su

Inventor： Liang-Pin Tai ,  Jing-Meng Liu ,  Hung-Der Su

IPC: H01L29/74 ,  H01L31/111

CPC classification number: H01L27/098 ,  H01L27/0744 ,  H01L29/7722 ,  H01L29/8083

Abstract: A single-chip common-drain JFET device comprises a drain, two gates and two source arranged such that two common-drain JFETs are formed therewith. Due to the two JFETs merged within a single chip, no wire bonding connection is needed therebetween, thereby without parasitic inductance and resistance caused by bonding wire, and therefore improving the performance and reducing the package cost. The single-chip common-drain JFET device may be applied in buck converter, boost converter, inverting converter, switch, and two-step DC-to-DC converter to improve their performance and efficiency. Alternative single-chip common-drain JFET devices are also provided for current sense or proportional current generation.

公开(公告)号：US20100207451A1

公开(公告)日：2010-08-19

申请号：US12770094

申请日：2010-04-29

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: G05F3/04

CPC classification number: G05F1/67 ,  H02J7/35 ,  Y02E10/566 ,  Y02E10/58 ,  Y10T307/50

Abstract: The present invention discloses an analog photovoltaic power circuit, comprising: a photovoltaic device group for receiving photo energy to generate an input voltage; a power stage circuit for converting the input voltage to an output voltage; an optimum voltage estimation circuit for receiving a predetermined voltage and estimating an optimum voltage according to a direction of variation of the input voltage and a direction of variation of the power generated by the photovoltaic device group; and an analog comparison and control circuit for comparing the optimum voltage with the input voltage, to thereby control the operation of the power stage circuit.

公开(公告)号：US20090236997A1

公开(公告)日：2009-09-24

申请号：US12382588

申请日：2009-03-19

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H05B41/34 ,  H05B39/04 ,  H05B41/36

CPC classification number: A01M29/10

Abstract: A LED control circuit and method generate a high frequency clock signal with a fixed duty for a LED driver, to supply a switching current to drive a LED to emit light flashing at a modulated high frequency and with a fixed duty. By controlling the flashing LED light within certain flashing frequency range, the circuit and method allow a LED light source for expelling, confusing or trapping insects but serving only an illuminative or decorative purpose to human eyes, due to the difference between human beings and insects in visual perception of flashing frequencies.

Abstract translation: LED控制电路和方法产生用于LED驱动器的固定占空比的高频时钟信号，以提供开关电流来驱动LED以以调制的高频率和固定占空比发光闪烁。 通过在一定的闪烁频率范围内控制闪烁的LED灯，电路和方法允许LED光源驱散，混淆或捕获昆虫，但仅为人眼照亮或装饰目的，由于人与昆虫之间的差异 闪烁频率的视觉感知。

公开(公告)号：US20090206663A1

公开(公告)日：2009-08-20

申请号：US12379256

申请日：2009-02-18

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H02J1/00

CPC classification number: H02M3/1588 ,  H02M2001/0022 ,  H02M2001/007 ,  Y02B70/1466 ,  Y10T307/406

Abstract: A power converter includes a first conversion stage for converting an input voltage to a first output voltage and a second conversion stage for converting the first output voltage to a second output voltage. An error signal is generated according to a reference voltage and a feedback signal extracted from the second conversion stage, and a feed forward signal is generated from the error signal and injected into the first conversion stage to stabilize the first output voltage. The feedback signal is a function of the second output voltage and thus, the error signal varies with the second output voltage. As a result, the first output voltage will be stabilized when the second output voltage varies, due to the varied feed forward signal.

Abstract translation: 功率转换器包括用于将输入电压转换为第一输出电压的第一转换级和用于将第一输出电压转换为第二输出电压的第二转换级。 根据从第二转换级提取的参考电压和反馈信号产生误差信号，并且从误差信号产生前馈信号并将其注入到第一转换级中以稳定第一输出电压。 反馈信号是第二输出电压的函数，因此误差信号随着第二输出电压而变化。 结果，由于前馈信号的变化，当第二输出电压变化时，第一输出电压将被稳定。

公开(公告)号：US07382172B2

公开(公告)日：2008-06-03

申请号：US11497587

申请日：2006-08-02

Applicant: Pao-Chuan Lin ,  Hung-Der Su ,  An-Tung Chen ,  Jing-Meng Liu

Inventor： Pao-Chuan Lin ,  Hung-Der Su ,  An-Tung Chen ,  Jing-Meng Liu

IPC: H03L5/00

CPC classification number: H03K3/35613 ,  H03K3/012

Abstract: The present invention discloses a level shift circuit which comprises: level shift means for receiving an input of a first operational voltage and generating an output of a second operational voltage; and a current path connecting with a source of the second operational voltage and providing current to the output of the level shift means to speed up output level switching. The circuit preferably further comprises a power consumption control circuit for stopping excess power consumption when the output of the level shift means has substantially accomplished level switching.

Abstract translation: 本发明公开了一种电平移位电路，包括：电平移位装置，用于接收第一工作电压的输入并产生第二工作电压的输出; 以及与第二工作电压源连接并将电流提供给电平移位装置的输出的电流路径，以加速输出电平切换。 电路优选地还包括功率消耗控制电路，用于在电平移位装置的输出基本上实现电平切换时停止多余的功率消耗。

公开(公告)号：US20080094349A1

公开(公告)日：2008-04-24

申请号：US11906477

申请日：2007-10-02

Applicant: Chiawei Liao ,  Jing-Meng Liu

Inventor： Chiawei Liao ,  Jing-Meng Liu

IPC: G09G3/36

CPC classification number: H05B33/089 ,  G02F1/133603 ,  G02F2001/133612

Abstract: The present invention discloses a backlight control circuit, comprising: a voltage supply circuit for receiving an input voltage and generating an output voltage under control by a control signal; at least one voltage comparison path respectively coupled to at least one light emission device path; a voltage operative amplifier circuit for generating the control signal according to a lowest voltage on the at least one voltage comparison path; and at least one under current detection circuit for detecting whether a corresponding one of the at least one light emission device path is in an under current status, whereby when anyone of the under current detection circuits detects the under current status, it sends an exclusion signal excluding a corresponding one of the at least one voltage comparison path from being an effective input of the voltage operative amplifier.

Abstract translation: 本发明公开了一种背光控制电路，包括：电压供给电路，用于接收输入电压，并通过控制信号控制输出电压; 至少一个电压比较路径分别耦合到至少一个发光器件路径; 电压操作放大器电路，用于根据所述至少一个电压比较路径上的最低电压产生所述控制信号; 以及至少一个欠电流检测电路，用于检测所述至少一个发光器件路径中的相应一个发光器件路径是否处于低电流状态，由此当所述欠电流检测电路中的任何一个检测到当前状态时，发送排除信号 不包括所述至少一个电压比较路径中的相应一个电压作为所述电压运算放大器的有效输入。

公开(公告)号：US20080094007A1

公开(公告)日：2008-04-24

申请号：US11906511

申请日：2007-10-02

Applicant: Chiawei Liao ,  Jing-Meng Liu

Inventor： Chiawei Liao ,  Jing-Meng Liu

IPC: H05B41/36

CPC classification number: H05B33/0827 ,  H05B33/0815

Abstract: The present invention discloses a backlight control circuit, and a method for controlling light emission devices. The method comprises: providing a plurality of light emission device paths connected in parallel; and setting a total current of the paths connected in parallel to a constant.

Abstract translation: 本发明公开了一种背光控制电路和控制发光装置的方法。 该方法包括：提供并联连接的多个发光装置路径; 并且将并联连接的路径的总电流设置为常数。

公开(公告)号：US20080080652A1

公开(公告)日：2008-04-03

申请号：US11801820

申请日：2007-05-12

Applicant: Chih-Ching Wang ,  Jing-Meng Liu ,  Dah-Chih Lin

Inventor： Chih-Ching Wang ,  Jing-Meng Liu ,  Dah-Chih Lin

IPC: H04L7/02

CPC classification number: H04L25/4923 ,  H04L7/02 ,  H04L25/4904

Abstract: The present invention discloses a method for single-wire transmission without clock synchronization, comprising: providing three states; defining a spacing bit by a first state of the three states; and defining data signals, a start signal and an end signal by combinations of the second and third states of the three states.

Abstract translation: 本发明公开了一种无时钟同步的单线传输方法，包括：提供三种状态; 将所述间隔位定义为所述三种状态的第一状态; 以及通过三种状态的第二和第三状态的组合来定义数据信号，起始信号和结束信号。