公开(公告)号：US08288967B2

公开(公告)日：2012-10-16

申请号：US12721829

申请日：2010-03-11

申请人： Jing-Meng Liu

发明人： Jing-Meng Liu

IPC分类号： H05B37/02

CPC分类号： H05B33/0848 ,  H05B33/0818 ,  Y02B20/346

摘要： A LED control circuit and method determine the frequency and duty of a LED driving signal according to a swing control signal and a dimming control signal, respectively. Responsive to the swing control signal, a pulse edge generator generates a clock whose frequency is determined by the swing control signal. Responsive to the clock and the dimming control signal, a duty ratio controller generates the LED driving signal whose frequency is determined by the clock frequency and whose duty is determined by the dimming control signal.

摘要翻译： LED控制电路和方法分别根据摆动控制信号和调光控制信号确定LED驱动信号的频率和占空比。 响应于摆动控制信号，脉冲沿发生器产生频率由摆动控制信号确定的时钟。 占空比控制器响应时钟和调光控制信号，产生频率由时钟频率确定的LED驱动信号，其占空比由调光控制信号决定。

公开(公告)号：US08072153B2

公开(公告)日：2011-12-06

申请号：US13004293

申请日：2011-01-11

申请人： Jing-Meng Liu

发明人： Jing-Meng Liu

IPC分类号： H05B37/00

CPC分类号： H05B33/0866 ,  H05B33/0827 ,  H05B33/086

摘要： The present invention discloses a multi-color backlight control circuit, comprising: a plurality of pins for electrically connecting with a plurality of LED strings of different LED colors; and a voltage supply circuit for receiving an input voltage and supplying a single output voltage to the plurality of LED strings of different LED colors. The present invention also discloses a multi-color backlight control method, comprising: supplying a single output voltage to a plurality of LED strings of different LED colors.

摘要翻译： 本发明公开了一种多色背光控制电路，包括：多个引脚，用于与多个不同LED颜色的LED串电连接; 以及电压供给电路，用于接收输入电压并将单个输出电压提供给具有不同LED颜色的多个LED串。 本发明还公开了一种多色背光控制方法，包括：将单个输出电压提供给不同LED颜色的多个LED串。

公开(公告)号：US07839667B2

公开(公告)日：2010-11-23

申请号：US12071727

申请日：2008-02-26

申请人： Chia-Wei Liao ,  Jing-Meng Liu ,  Jwin-Yen Guo

发明人： Chia-Wei Liao ,  Jing-Meng Liu ,  Jwin-Yen Guo

IPC分类号： H02M3/24

CPC分类号： H02M3/156 ,  H02M2001/0009

摘要： In an adaptive leading-edge blanking circuit and method for a switching mode power converter, an inductor current of the converter is sensed and compared with a threshold to decide an end point of a leading-edge blanking time. Circuit and method are further provided for preventing the converter from entering pulse skipping mode, which employs a current trimming circuit in an oscillator for a PWM controller in the converter to reduce a charging current in the oscillator if the output voltage of the converter is excessively high, to thereby reduce the oscillator frequency and in turn lower the switching frequency of a high-side power switch of the converter.

摘要翻译： 在用于开关模式功率转换器的自适应前沿消隐电路和方法中，感测转换器的电感器电流并将其与阈值进行比较以决定前沿消隐时间的终点。 进一步提供电路和方法，用于防止转换器进入脉冲跳跃模式，其在转换器中的PWM控制器的振荡器中采用电流微调电路，以在转换器的输出电压过高时降低振荡器中的充电电流 ，从而降低振荡器频率，从而降低转换器的高侧功率开关的开关频率。

公开(公告)号：US20100026256A1

公开(公告)日：2010-02-04

申请号：US12292185

申请日：2008-11-13

申请人： Jing-Meng Liu ,  An-Tung Chen ,  Fu-Shiang Lai

发明人： Jing-Meng Liu ,  An-Tung Chen ,  Fu-Shiang Lai

IPC分类号： G05F1/10

CPC分类号： H02M3/158 ,  H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

摘要： A switching regulator may operate in a synchronous mode or an asynchronous mode. When the load current is higher than a threshold, the switching regulator switches a pair of serially connected high side and low side switches with a pulse width modulation signal. When the load current is lower than the threshold, the pulse width modulation signal is blocked not to switch the low side switch, the switching regulator switches only the high side switch with the pulse width modulation signal, the low side switch remains off, and a diode serially connected to the high side switch acts as a rectifier.

摘要翻译： 开关调节器可以以同步模式或异步模式工作。 当负载电流高于阈值时，开关稳压器用脉冲宽度调制信号切换一对串联的高侧和低压开关。 当负载电流低于阈值时，脉冲宽度调制信号被阻止而不切换低压侧开关，开关稳压器仅利用脉宽调制信号切换高侧开关，低侧开关保持关断， 串联连接到高侧开关的二极管充当整流器。

公开(公告)号：US20080094008A1

公开(公告)日：2008-04-24

申请号：US11906512

申请日：2007-10-02

申请人： Jing-Meng Liu

发明人： Jing-Meng Liu

IPC分类号： H05B37/02

CPC分类号： H05B33/0827 ,  H05B33/0815

摘要： The present invention discloses a backlight control circuit, comprising: a voltage supply circuit, under control by a control signal, for receiving an input voltage and generating an output voltage; a plurality of nodes for respectively indicating the current status of corresponding light emission device paths; and a high-low voltage comparison and amplifier circuit for generating the control signal according to a voltage difference between at least two nodes.

摘要翻译： 本发明公开了一种背光控制电路，包括：电压供给电路，由控制信号控制，用于接收输入电压并产生输出电压; 分别表示对应的发光装置路径的当前状态的多个节点; 以及用于根据至少两个节点之间的电压差产生控制信号的高低电压比较和放大电路。

公开(公告)号：US07271802B2

公开(公告)日：2007-09-18

申请号：US10846585

申请日：2004-05-17

申请人： Der-Jiunn Wang ,  Jing-Meng Liu ,  Chao-Hsuan Chuang ,  Nien-Hui Kung ,  Wen-Hung Huang

发明人： Der-Jiunn Wang ,  Jing-Meng Liu ,  Chao-Hsuan Chuang ,  Nien-Hui Kung ,  Wen-Hung Huang

IPC分类号： G06F1/30

CPC分类号： G09G3/342 ,  G09G3/3208 ,  G09G2320/0606 ,  G09G2320/0626 ,  G09G2330/02

摘要： A backlight power controller chip comprises a control circuit connected to two switches to turn on and off two display panels of a dual panel display handheld apparatus. The controller chip individually switches the two switches to control the backlight sources of the two display panels. The controller chip is available for various types of display panels.

摘要翻译： 背光源功率控制器芯片包括连接到两个开关的控制电路以打开和关闭双面板显示器手持设备的两个显示面板。 控制器芯片单独切换两个开关以控制两个显示面板的背光源。 控制器芯片可用于各种类型的显示面板。

公开(公告)号：US07180886B2

公开(公告)日：2007-02-20

申请号：US10153784

申请日：2002-05-24

申请人： Jing-Meng Liu ,  Kent Hwang ,  Chao-Hsuan Chuang ,  Cheng-Hsuan Fan

发明人： Jing-Meng Liu ,  Kent Hwang ,  Chao-Hsuan Chuang ,  Cheng-Hsuan Fan

IPC分类号： H04J3/06 ,  H04L12/50

CPC分类号： H04L25/4923 ,  H04L7/06 ,  H04L25/4904

摘要： In a synchronized data communication on a one-wired bus, it transmits and receives a synchronizing signal that segments part of or all proportions of the data signal by use of three electrically distinguishable statuses for the identifier of the synchronizing signal and the logic states of the data signal to increase the endurance of frequency displacement and resist influences of the interference of external conditions, low quality of transmission medium, and limitation of transmission distance and make the reliability and correctness of the signal transmission improve substantially. It is also clearly illustrated the feasibility and simplicity for implementing the one-wired synchronized communication by a plurality of exemplary signal types and a transceiver circuitry.

摘要翻译： 在单线总线上的同步数据通信中，它发送和接收同步信号，该同步信号通过使用用于同步信号的标识符的三个电可区分状态以及数据信号的逻辑状态来分割数据信号的一部分或全部比例 数据信号增加频率位移的耐久性，抵抗外部条件干扰，传输介质质量差，传输距离限制的影响，使信号传输的可靠性和正确性大大提高。 还清楚地示出了通过多个示例性信号类型和收发器电路来实现单线同步通信的可行性和简单性。

公开(公告)号：US06927960B2

公开(公告)日：2005-08-09

申请号：US10282062

申请日：2002-10-29

申请人： Jian-Rong Huang ,  Liang-Pin Tai ,  Jing-Meng Liu

发明人： Jian-Rong Huang ,  Liang-Pin Tai ,  Jing-Meng Liu

IPC分类号： H02H5/04

CPC分类号： H02H5/041

摘要： A circuit protection device includes an overheat protecting circuit connected to a main circuit and capable of being activated so as to shut down the main circuit when operating temperature of the main circuit reaches a predetermined value, and a current limiting circuit connected to the main circuit for preventing current through the main circuit from exceeding a predetermined threshold value. The current limiting circuit is further connected to the overheat protecting circuit and controls activation of the overheat protecting circuit when the current through the main circuit reaches the predetermined threshold value. Therefore, erroneous operation of the circuit protection device due to a shift in component characteristics of the overheat protecting circuit attributed to limitations in fabrication can be avoided.

摘要翻译： 电路保护装置包括：连接到主电路并且能够被激活以在主电路的工作温度达到预定值时关闭主电路的过热保护电路;以及连接到主电路的限流电路， 防止通过主电路的电流超过预定阈值。 当流过主电路的电流达到预定阈值时，电流限制电路进一步连接到过热保护电路，并控制过热保护电路的启动。 因此，可以避免由于制造中的限制而引起的过热保护电路的部件特性偏移导致的电路保护装置的错误操作。

公开(公告)号：US06809616B2

公开(公告)日：2004-10-26

申请号：US10342183

申请日：2003-01-15

申请人： Jing-Meng Liu ,  Kent Hwang ,  Chao-Hsuan Chuang ,  Cheng-Hsuan Fan

发明人： Jing-Meng Liu ,  Kent Hwang ,  Chao-Hsuan Chuang ,  Cheng-Hsuan Fan

IPC分类号： H03H1100

CPC分类号： H03H11/485 ,  H03H11/48

摘要： An inductor equivalent circuit is disclosed. The circuit comprises a reference current source, a first current mirror, a second current mirror, two operational amplifiers OP1 and OP2, a capacitor, a first transistor, a second transistor, a mirror resistor set, and a bypass current source in parallel with the capacitor. An input signal is through OP1 and second transistor to control the reference current source. The first mirror current is then feed-back a signal to the first transistor through an OP2. The current signal makes the drain current of the first transistor lags the input voltage signal by 90° due to the capacitor coupled with the first mirror current source. The mirror resistor set can be resistors having one common terminal grounded, and other terminals each, respectively, coupled with the first and the second transistor and the capacitor, or can be composed of transistors and all of them with gate property biased so that the transistors in the mirror resistor set are operated in an ohmic region. The second mirror current provides an output current of the inductor equivalent circuit for next cascade stage.

摘要翻译： 公开了一种电感器等效电路。 该电路包括参考电流源，第一电流镜，第二电流镜，两个运算放大器OP1和OP2，电容器，第一晶体管，第二晶体管，反射镜电阻器组以及旁路电流源 电容器。 输入信号通过OP1和第二晶体管来控制参考电流源。 然后通过OP2将第一镜电流反馈到第一晶体管。 由于与第一反射镜电流源耦合的电容器，电流信号使得第一晶体管的漏极电流滞留输入电压信号90°。 镜电阻器组可以是具有一个公共端子接地的电阻器，并且其他端子分别与第一和第二晶体管和电容器耦合，或者可以由晶体管组成，并且所有这些端子都具有偏置的栅极特性，使得晶体管 镜面电阻组在欧姆区域工作。 第二镜电流为下一级联级提供电感等效电路的输出电流。

公开(公告)号：US06400542B1

公开(公告)日：2002-06-04

申请号：US09882680

申请日：2001-06-18

申请人： Jian-Hsing Lee ,  Jian-Ren Shih ,  Yi-Hsun Wu ,  Jing-Meng Liu

发明人： Jian-Hsing Lee ,  Jian-Ren Shih ,  Yi-Hsun Wu ,  Jing-Meng Liu

IPC分类号： H02H900

CPC分类号： H01L27/0259

摘要： A voltage clamping circuit that protects integrated circuits having multiple separate power supply voltage terminals from damage when an ESD event causes excessive differential voltages between the multiple separate power supply voltage terminals. The voltage clamping circuit has two subgroups of Darlington connected clamping transistors. The first subgroup of Darlington connected clamping transistors is connected between the first power supply voltage terminal and the second power supply voltage terminal. If the differential voltage exceeds the first clamping voltage level, the first subgroup of Darlington connected clamping transistors turn on and restore the first differential voltage to a level less than the first clamping voltage level. The second subgroup of Darlington connected clamping transistors connected between the second power supply terminal and the first power supply terminal. If the differential voltage exceeds the second clamping voltage level, the second subgroup of Darlington connected transistors turn on and restore the differential voltage to a level less than the second clamping voltage level.

摘要翻译： 一种电压钳位电路，当ESD事件在多个分离的电源电压端子之间引起过大的差分电压时，保护具有多个单独的电源电压端子的集成电路免受损坏。 电压钳位电路有两个Darlington连接钳位晶体管的子组。 达林顿连接的钳位晶体管的第一个子组连接在第一电源电压端子和第二电源电压端子之间。 如果差分电压超过第一钳位电压电平，则达林顿连接的钳位晶体管的第一个子组导通，并将第一个差分电压恢复到小于第一钳位电压电平的电平。 连接在第二电源端子和第一电源端子之间的达林顿的第二子组连接钳位晶体管。 如果差分电压超过第二钳位电压电平，则达林顿连接晶体管的第二个子组导通，并将差分电压恢复到小于第二钳位电压电平的电平。