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    • 15. 发明授权
    • Voltage converting circuit and method thereof
    • 电压转换电路及其方法
    • US08018210B2
    • 2011-09-13
    • US12696023
    • 2010-01-28
    • Ke-Horng ChenShih-Jung WangYu-Huei LeeYung-Chih LaiHsuan-Yu Tsai
    • Ke-Horng ChenShih-Jung WangYu-Huei LeeYung-Chih LaiHsuan-Yu Tsai
    • G05F1/613G05F1/00
    • H02M3/156
    • A voltage converting circuit including a power stage, a filter, a comparator, a first and a second feedback units. The power stage receives an input voltage and outputs the input voltage according to a duty cycle. The filter receives the input voltage to convert the input voltage into a current, and filters the current to obtain an output voltage. The first feedback unit amplifies a difference between a reference voltage and the output voltage to obtain an error voltage. The second feedback unit calculates the quadratic differential and integration of the output voltage to obtain a sensing voltage. The comparator compares the error voltage and the sensing voltage, and outputs a comparing result to adjust a duty ratio. Herein, a ripple of the output voltage is linearly proportional to that of the current, and DC divided voltage level of the output voltage is substantially equal to the reference voltage.
    • 一种电压转换电路,包括功率级,滤波器,比较器,第一和第二反馈单元。 功率级接收输入电压,并根据占空比输出输入电压。 滤波器接收输入电压以将输入电压转换为电流,并对电流进行滤波以获得输出电压。 第一反馈单元放大参考电压和输出电压之间的差以获得误差电压。 第二反馈单元计算输出电压的二次微分和积分以获得感测电压。 比较器比较误差电压和感测电压,并输出比较结果以调整占空比。 这里,输出电压的波动与电流的波动成线性比例,输出电压的直流分压电压基本上等于基准电压。
    • 18. 发明申请
    • FEEDBACK-ADJUSTABLE CHARGING SYSTEM AND METHOD THEREOF
    • 反馈可调整充电系统及其方法
    • US20110101925A1
    • 2011-05-05
    • US12913030
    • 2010-10-27
    • WEI-CHIH LAI
    • WEI-CHIH LAI
    • H02J7/04
    • H02J7/047
    • The present invention provides a feedback-adjustable charging system applicable to a rechargeable electronic device and a method thereof. The feedback-adjustable charging system comprises a converter module, an adjustable voltage module and maybe a connective module. The converter module is coupled to an AC power supply and is used for converting AC power from the AC power supply into DC power. The adjustable voltage module is coupled to the converter module for receiving the DC power and producing a voltage used for charging. The connective module is coupled to the electronic device and the adjustable voltage module for receiving and transmitting the charging voltage to the electronic device and for producing a feedback parameter to the adjustable voltage module. In the charging system, the adjustable voltage module is used to adjust a value of the charging voltage according to the feedback parameter.
    • 本发明提供一种适用于可充电电子装置的可反馈调节充电系统及其方法。 反馈可调充电系统包括转换器模块,可调电压模块和可能的连接模块。 转换器模块耦合到交流电源,用于将交流电源的交流电转换成直流电源。 可调电压模块耦合到转换器模块,用于接收直流电力并产生用于充电的电压。 连接模块耦合到电子设备和可调节的电压模块,用于接收和发送到电子设备的充电电压并且产生到可调电压模块的反馈参数。 在充电系统中,可调电压模块用于根据反馈参数调整充电电压的值。
    • 20. 发明授权
    • Scaling device of image process
    • 图像处理的缩放设备
    • US07782343B2
    • 2010-08-24
    • US11396694
    • 2006-04-04
    • Hung-Chih Lai
    • Hung-Chih Lai
    • G09G5/02
    • G06T3/4023G06T2200/28
    • A scaling device for an image processor includes an image enlarging device and an integer divider. The image enlarging device receives an input image data, and enlarges the input image data, outputting an enlarging image data and a sample signal. The integer divider receives the enlarging image data, and samples the enlarging image data, outputting an object image data. By only adding an external integer divider at the output of the image enlarging device for obtain the scaling function of the image processor, a simpler circuit for image scaling is presented.
    • 用于图像处理器的缩放装置包括图像放大装置和整数除法器。 图像放大装置接收输入图像数据,并放大输入图像数据,输出放大图像数据和采样信号。 整数分频器接收放大图像数据,对放大图像数据进行采样,输出对象图像数据。 通过在图像放大装置的输出处仅添加外部整数分频器来获得图像处理器的缩放功能,提供了用于图像缩放的更简单的电路。