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    • 2. 发明申请
    • SWITCHING CIRCUIT SYSTEM FOR ADJUSTING BRIGHTNESS AND METHOD THEREOF
    • 用于调节亮度的开关电路系统及其方法
    • US20120268025A1
    • 2012-10-25
    • US13187519
    • 2011-07-21
    • DER-HO CHIYANG-JUI CHAOZHI-QIANG XIEJI-BAO FUWEN-TAO WUMI TANG
    • DER-HO CHIYANG-JUI CHAOZHI-QIANG XIEJI-BAO FUWEN-TAO WUMI TANG
    • H05B37/02
    • H05B33/0863H05B37/029
    • A switching circuit system includes a rectification circuit, a transformer, a light-emitting unit, a touch panel including a plurality of touch sensors, and a central processing unit (CPU). The CPU determines that a first user operation is taken place on the touch panel when first and second touch signals from at least two touch sensors have been received within a predetermined time interval, and further determines the track of the touches according to the sequence in which the first and second touch signals were received when the first user operation was determined. The CPU further directs the transformer to control the voltage output to the light-emitting unit according to the determined touch track to control the switching circuit system to execute a first function, and otherwise, a second user operation is determined which executes a second function. A related method is also provided.
    • 开关电路系统包括整流电路,变压器,发光单元,包括多个触摸传感器的触摸面板以及中央处理单元(CPU)。 当在预定时间间隔内接收到来自至少两个触摸传感器的第一和第二触摸信号时,CPU确定在触摸面板上发生第一用户操作,并且根据其中的顺序进一步确定触摸的轨迹 当确定第一用户操作时接收到第一和第二触摸信号。 CPU进一步引导变压器根据确定的触摸轨控制输出到发光单元的电压,以控制开关电路系统执行第一功能,否则确定执行第二功能的第二用户操作。 还提供了相关的方法。
    • 3. 发明申请
    • LED DRIVING CIRCUIT
    • LED驱动电路
    • US20120262068A1
    • 2012-10-18
    • US13245873
    • 2011-09-27
    • DER-HO CHIYANG-JUI CHAOZHI-QIANG XIEJI-BAO FUWEN-TAO WUMI TANG
    • DER-HO CHIYANG-JUI CHAOZHI-QIANG XIEJI-BAO FUWEN-TAO WUMI TANG
    • H05B37/02
    • H05B33/0818H05B33/089Y02B20/341
    • An LED (light emitting diode) driving circuit includes a rectifying circuit, an LED module, a voltage dropping circuit connected to the LED module, a voltage detecting circuit connected between the voltage dropping circuit and the LED module, and an integrated circuit. The integrated circuit includes a pulse-width modulation (PWM) control module providing PWM waves, an overcurrent protection (OCP) module, an overvoltage protection (OVP) module, and a frequency control module. The OCP module detects the working current of the LED module, and the OVP module detects the working voltage. The frequency control module adjust the duty cycle of the PWM waves according to the results of comparisons made by the OCP module and the OVP module against reference levels, to adjust the working current of the LED module.
    • LED(发光二极管)驱动电路包括整流电路,LED模块,连接到LED模块的降压电路,连接在降压电路和LED模块之间的电压检测电路和集成电路。 该集成电路包括提供PWM波的脉冲宽度调制(PWM)控制模块,过流保护(OCP)模块,过压保护(OVP)模块和频率控制模块。 OCP模块检测LED模块的工作电流,OVP模块检测工作电压。 频率控制模块根据OCP模块和OVP模块与参考电平进行比较的结果调整PWM波的占空比,以调整LED模块的工作电流。
    • 6. 发明申请
    • REGULATION DEVICE AND POWER ADAPTER USING THE SAME
    • 使用它的调节装置和电源适配器
    • US20120161743A1
    • 2012-06-28
    • US13097024
    • 2011-04-28
    • DER-HO CHIMI TANGCHUN-PENG HUANG
    • DER-HO CHIMI TANGCHUN-PENG HUANG
    • G05F3/16
    • G05F1/46G01R31/00G05F1/63
    • A power adapter includes a regulation device, which includes a division circuit, a reference circuit, and an impedance regulation circuit. The division circuit includes a first reference terminal and a second reference terminal. The second reference terminal is connected to an output terminal of the regulation device. The reference circuit includes a third reference terminal connected to the first reference terminal, and the reference circuit outputs a stable reference voltage via the third reference terminal, to provide the stable reference voltage for the first reference terminal. The impedance regulation circuit is connected to the first reference terminal, to provide equivalent impedance for the first reference terminal. The impedance of the equivalent impedance changes in a way corresponding to changes in the current flowing through the output terminal.
    • 电源适配器包括调节装置,其包括分频电路,参考电路和阻抗调节电路。 分割电路包括第一参考端和第二参考端。 第二参考端子连接到调节装置的输出端子。 参考电路包括连接到第一参考端子的第三参考端子,并且参考电路经由第三参考端子输出稳定的参考电压,以为第一参考端子提供稳定的参考电压。 阻抗调节电路连接到第一参考端,为第一参考端提供等效阻抗。 等效阻抗的阻抗以与流过输出端子的电流变化相对应的方式改变。