公开(公告)号：US09081401B2

公开(公告)日：2015-07-14

申请号：US13728605

申请日：2012-12-27

Applicant: Chia-Wei Liao ,  Leng-Nien Hsiu ,  Pei-Yuan Chen ,  Roland Van Roy ,  Jing-Meng Liu

Inventor： Chia-Wei Liao ,  Leng-Nien Hsiu ,  Pei-Yuan Chen ,  Roland Van Roy ,  Jing-Meng Liu

IPC: G05F1/00 ,  G05F5/00 ,  G05F1/455 ,  H05B37/02 ,  G05F3/02 ,  G05F1/10 ,  H05B33/08

CPC classification number: G05F1/455 ,  G05F1/10 ,  G05F3/02 ,  H05B33/0815 ,  H05B37/02 ,  Y02B20/346

Abstract: The present invention discloses a switching regulator and a control circuit and a control method thereof. The switching regulator generates a compensation signal according to a feedback signal, and generates a driving signal according to the compensation signal, to control a power stage for converting an input voltage to an output voltage. The compensation signal is adjusted according to the input voltage, such that when the input voltage is equal to or lower than a predetermined level, the compensation signal is kept at a predetermined value.

Abstract translation: 本发明公开了一种开关调节器及其控制电路及其控制方法。 开关调节器根据反馈信号产生补偿信号，并根据补偿信号产生驱动信号，以控制用于将输入电压转换为输出电压的功率级。 根据输入电压调整补偿信号，使得当输入电压等于或低于预定电平时，补偿信号保持在预定值。

公开(公告)号：US20140077757A1

公开(公告)日：2014-03-20

申请号：US14023900

申请日：2013-09-11

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H02M1/08

CPC classification number: H02M1/08 ,  H02J3/385 ,  Y02E10/58

Abstract: The invention provides an analog photovoltaic power circuit with auto zero calibration, which judges whether the current trend or voltage trend has the same direction as or different direction from the power trend, and adjusts an input/output power conversion accordingly, so that an input current approaches to an optimum current corresponding to a maximum power point, in which the judgments of the current trend, voltage trend and power trend is calibrated with auto-zero circuitry.

Abstract translation: 本发明提供一种具有自动归零校准的模拟光伏电源电路，其判断当前趋势或电压趋势是否与电力趋势具有相同的方向或不同的方向，并且相应地调整输入/输出功率转换，使得输入电流 接近对应于最大功率点的最佳电流，其中使用自动归零电路校准当前趋势，电压趋势和功率趋势的判断。

公开(公告)号：US20140062444A1

公开(公告)日：2014-03-06

申请号：US14071305

申请日：2013-11-04

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H02M3/156

CPC classification number: H02M3/156

Abstract: A boundary conduction mode (BCM) switching regulator controls a power stage to convert an input voltage to an output voltage or output current. The BCM switching regulator detects whether it is operating in continuous conduction mode (CCM) or discontinuous conduction mode (DCM), and adjusts the On-time, Off-time, or frequency of the power stage accordingly, so that the switching regulator operates in or near BCM.

Abstract translation: 边界导通模式（BCM）开关稳压器控制功率级将输入电压转换为输出电压或输出电流。 BCM开关稳压器检测其是工作在连续导通模式（CCM）还是不连续导通模式（DCM），并相应调整功率级的导通时间，关断时间或频率，以使开关稳压器工作在 或BCM附近。

公开(公告)号：US08643290B2

公开(公告)日：2014-02-04

申请号：US13096421

申请日：2011-04-28

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H05B37/02

CPC classification number: G09G3/3406 ,  G09G2320/0633 ,  H05B33/0818 ,  H05B33/0824 ,  Y02B20/347

Abstract: The present invention discloses a flat panel display (FPD), a light emitting module for use in the FPD, and an integrated circuit for use in the light emitting module. The light emitting module includes: at least one light emitting device string; and a local circuit for controlling current through the light emitting device string and generating a local feedback signal, wherein the local circuit has a first terminal for receiving power, a second terminal for coupling to the light emitting device string to control the current through the light emitting device string, a third terminal for generating the local feedback signal, and a fourth terminal for coupling to ground. The wiring of the FPD is therefore simplified.

Abstract translation: 本发明公开了一种平板显示器（FPD），用于FPD的发光模块和用于发光模块的集成电路。 发光模块包括：至少一个发光器件串; 以及本地电路，用于控制通过所述发光器件串并且产生局部反馈信号的电流，其中所述本地电路具有用于接收功率的第一端子，用于耦合到所述发光器件串的第二端子，以控制通过所述光的电流 发射器件串，用于产生本地反馈信号的第三端子和用于耦合到地的第四端子。 因此FPD的布线被简化。

公开(公告)号：US20140009075A1

公开(公告)日：2014-01-09

申请号：US13966075

申请日：2013-08-13

Applicant: Chiawei Liao ,  Jing-Meng Liu

Inventor： Chiawei Liao ,  Jing-Meng Liu

IPC: H05B33/08

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：US20130250631A1

公开(公告)日：2013-09-26

申请号：US13846568

申请日：2013-03-18

Applicant: Chia-Wei Liao ,  Jing-Meng Liu

Inventor： Chia-Wei Liao ,  Jing-Meng Liu

IPC: H02M1/12

CPC classification number: H02M1/42 ,  G05F3/262 ,  H02M1/08 ,  H02M1/126 ,  H02M1/4208 ,  H02M2001/0009 ,  Y02B70/126

Abstract: The present invention discloses a power supply circuit with power factor correction (PFC) function, and an automatic gain control circuit therefor and a control method thereof. The power supply circuit includes the automatic gain control circuit and a load driver circuit. The automatic gain control circuit converts an input voltage to a regulation voltage, and the load driver circuit generates an output current according to the regulation voltage. The automatic gain control circuit automatically adjust the regulation voltage such that the regulation voltage has a substantially fixed amplitude or fixed average value under different input voltages of different specifications, and the output current provided by the load driver circuit varies in phase with the input voltage to provide a PFC function.

Abstract translation: 本发明公开了一种具有功率因数校正（PFC）功能的电源电路及其自动增益控制电路及其控制方法。 电源电路包括自动增益控制电路和负载驱动电路。 自动增益控制电路将输入电压转换为调节电压，负载驱动电路根据调节电压产生输出电流。 自动增益控制电路自动调节调节电压，使得调节电压在不同规格的不同输入电压下具有基本上固定的幅度或固定平均值，负载驱动电路提供的输出电流与输入电压相同 提供PFC功能。

公开(公告)号：US20120326613A1

公开(公告)日：2012-12-27

申请号：US13226091

申请日：2011-09-06

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H05B37/00

CPC classification number: H05B33/0815 ,  G09G3/342 ,  G09G2330/021 ,  H05B33/0827 ,  Y02B20/347

Abstract: The present invention discloses a current splitter circuit for splitting a supply current to multiple light emitting device strings of a light emitting device array. The current splitter circuit includes: a minimum selector circuit coupled to the multiple light emitting device strings to generate a minimum signal which indicates a minimum voltage of the light emitting device strings; and multiple current source circuits each including a first current source end coupled to a corresponding light emitting device string, a second current source end coupled to ground, and a current source control end receiving a current control signal related to the minimum signal, so as to control currents through the corresponding light emitting device string.

Abstract translation: 本发明公开了一种用于将电源电流分离到发光器件阵列的多个发光器件串的电流分离器电路。 当前的分路器电路包括：耦合到多个发光器件串的最小选择器电路，以产生指示发光器件串的最小电压的最小信号; 以及多个电流源电路，每个电流源电路包括耦合到对应的发光器件串的第一电流源端，耦合到地的第二电流源端和接收与最小信号相关的电流控制信号的电流源控制端，以便 控制电流通过相应的发光器件串。

公开(公告)号：US20120286679A1

公开(公告)日：2012-11-15

申请号：US13466705

申请日：2012-05-08

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H05B37/02

CPC classification number: H05B33/0827

Abstract: A light emitting device current regulator circuit is disclosed. A light emitting device circuit has a first end for receiving light emitting device operation power, and a second end. The light emitting device current regulator circuit includes: an internal voltage generation circuit coupled to the second end, for generating an internal voltage according to a second end voltage to supply electrical power to the light emitting device current regulator circuit, wherein the supply voltage generation circuit includes a charge storage device for storing charges from the second end voltage to generate the supply voltage; and a current control circuit coupled to the second end, the current control circuit regulating the light emitting device current according to a control signal, wherein the control signal at least intermittently reduces the light emitting device current to zero or low current in order to raise the second end voltage.

Abstract translation: 公开了一种发光器件电流调节器电路。 发光器件电路具有用于接收发光器件工作电源的第一端和第二端。 发光器件电流调节器电路包括：内部电压产生电路，其耦合到第二端，用于根据第二端电压产生内部电压以向发光器件电流调节器电路提供电力，其中电源电压产生电路 包括用于从第二端电压存储电荷以产生电源电压的电荷存储装置; 以及耦合到所述第二端的电流控制电路，所述电流控制电路根据控制信号调节所述发光器件电流，其中所述控制信号至少间歇地将所述发光器件电流减小到零或低电流，以便提高 第二端电压。

公开(公告)号：US08258714B2

公开(公告)日：2012-09-04

申请号：US12768046

申请日：2010-04-27

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H05B41/16

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：US08248001B2

公开(公告)日：2012-08-21

申请号：US12382588

申请日：2009-03-19

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H05B37/02

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。