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    • 2. 发明授权
    • System and method for optimizing current overload protection circuit
    • 优化电流过载保护电路的系统和方法
    • US08261230B2
    • 2012-09-04
    • US12774685
    • 2010-05-05
    • Tsung-Sheng HuangChun-Jen ChenDuen-Yi HoWei-Chieh Chou
    • Tsung-Sheng HuangChun-Jen ChenDuen-Yi HoWei-Chieh Chou
    • G06F17/50G06F9/455G05D17/00
    • G06F17/5063
    • A system for optimizing a current overload protection circuit includes an input device, a data storage device, a central processing device, and a display. The central processing device includes a storage module, a control module, and a calculation module. The storage module stores a VI application therein. The control module receives instructions from the input device and selects virtual electronic components of the current overload protection circuit from the data storage device and connection of the selected electronic components. The current overload protection circuit is completed and run in the VI application; electronic components significantly affecting the maximum protection current are labeled. The calculation module calculates normal distribution samples of the current overload protection circuit based on the labeled electronic components. The display shows whether the current overload protection circuit meets a process capability standard.
    • 用于优化电流过载保护电路的系统包括输入装置,数据存储装置,中央处理装置和显示器。 中央处理装置包括存储模块,控制模块和计算模块。 存储模块在其中存储VI应用。 控制模块从输入设备接收指令,并从数据存储设备中选择电流过载保护电路的虚拟电子部件,并选择电子部件的连接。 电流过载保护电路在VI应用中完成并运行; 显着影响最大保护电流的电子元件被标记。 计算模块基于标记的电子元件计算电流过载保护电路的正态分布样本。 显示屏显示电流过载保护电路是否符合过程能力标准。
    • 3. 发明授权
    • Feedforward controlled envelope modulator and feedforward control circuit thereof
    • 前馈控制包络调制器及其前馈控制电路
    • US08237499B2
    • 2012-08-07
    • US12775486
    • 2010-05-07
    • Chun-Jen ChenChih-Chang Lee
    • Chun-Jen ChenChih-Chang Lee
    • H03G3/20
    • H03F3/24H03F1/0266H03F3/195H03F2200/336H03F2200/451H03F2200/555
    • The present disclosure illustrates a feedforward controlled envelope modulator and a feedforward control circuit thereof. The feedforward controlled envelope modulator comprises a linear amplifier circuit, a switching amplifier, and a feedforward control circuit. The linear amplifier circuit amplifies an input voltage signal, so as to output an output voltage signal to a load node. The switching amplifier receives a comparison signal, and outputs a switching current to the load node according to the comparison signal. The feedforward control circuit comprises a duplicate linear amplifier circuit and a hysteresis comparator. The duplicate linear amplifier circuit amplifies the input voltage signal, so as to output a reference voltage signal, wherein an amplifying gain of the duplicate linear amplifier circuit is identical to an amplifying gain of the linear amplifier circuit. The hysteresis comparator compares the output voltage signal and the reference voltage signal, so as to output the comparison signal.
    • 本公开示出了前馈控制包络调制器及其前馈控制电路。 前馈控制包络调制器包括线性放大器电路,开关放大器和前馈控制电路。 线性放大器电路放大输入电压信号,以将输出电压信号输出到负载节点。 开关放大器接收比较信号,并根据比较信号将负载节点输出开关电流。 前馈控制电路包括一个重复的线性放大器电路和一个滞后比较器。 重复的线性放大器电路放大输入电压信号,以便输出参考电压信号,其中重复线性放大器电路的放大增益与线性放大器电路的放大增益相同。 迟滞比较器比较输出电压信号和参考电压信号,以输出比较信号。
    • 4. 发明授权
    • Polar transmitter, method and apparatus for phase modulation
    • 极性发射机,相位调制方法和装置
    • US08036611B2
    • 2011-10-11
    • US12436016
    • 2009-05-05
    • Huan-Ke ChiuChun-Jen Chen
    • Huan-Ke ChiuChun-Jen Chen
    • H04B1/04
    • H03C5/00
    • A phase modulation method with a polar transmitter. A target frequency is first designated by comparing the RF signal with a reference frequency and the phase sample. An oscillator control word is generated based on the target frequency. A digital oscillator can modulate from a first phase to a second phase to synthesize a preliminary RF signal based on the oscillator control word. When the target frequency exceeds the modulation capability of the digital oscillator, the oscillator control word is generated based on the target frequency minus 180 degrees, and the preliminary RF signal is shifted by 180 degrees to be the RF signal having the target frequency. When the target frequency does not exceed the modulation capability of the digital oscillator, the oscillator control word is generated solely based on the target frequency to output the preliminary RF signal to be the RF signal having the target frequency.
    • 一种带极性发射机的相位调制方法。 首先通过将RF信号与参考频率和相位采样进行比较来指定目标频率。 基于目标频率产生振荡器控制字。 数字振荡器可以从第一相位调制到第二相位,以基于振荡器控制字来合成初步RF信号。 当目标频率超过数字振荡器的调制能力时,基于目标频率减去180度产生振荡器控制字,并将初步RF信号偏移180度作为具有目标频率的RF信号。 当目标频率不超过数字振荡器的调制能力时,仅基于目标频率产生振荡器控制字,以将初步RF信号输出为具有目标频率的RF信号。
    • 5. 发明授权
    • Method for selecting and adjusting scanner illuminant
    • 选择和调整扫描仪光源的方法
    • US07973981B2
    • 2011-07-05
    • US12696232
    • 2010-01-29
    • Chun-Jen Chen
    • Chun-Jen Chen
    • H04N1/04H04N1/46
    • H04N1/00885H04N1/00901H04N1/00904
    • A scanner includes a first illuminant device having a first power associated therewith, and a second illuminant device having a second power associated therewith. The first power is greater than the second power, and each of the first illuminant device and the second illuminant device is configured to selectively scan a document. The scanner is configured to select one of the first illuminant device and the second illuminant device based, at least in part on, a level of power supplied to the scanner via a power source, and perform a single scan of the document using only the selected one of the first illuminant device and the second illuminant device.
    • 扫描仪包括具有与其相关联的第一功率的第一光源装置和具有与其相关联的第二功率的第二光源装置。 第一功率大于第二功率,并且第一光源装置和第二光源装置中的每一个被配置为选择性地扫描文件。 扫描器被配置为至少部分地基于通过电源提供给扫描仪的电力水平来选择第一照明装置和第二照明装置中的一个,并且仅使用所选择的文件执行对文件的单次扫描 第一光源装置和第二光源装置之一。
    • 7. 发明授权
    • Circuit scanner to perform color space conversion on RGB signal
    • 扫描仪电路对RGB信号进行色彩空间转换
    • US07688487B2
    • 2010-03-30
    • US11498416
    • 2006-08-02
    • Chun-Jen ChenShih-Huang Chen
    • Chun-Jen ChenShih-Huang Chen
    • H04N1/04
    • H04N1/40012
    • A circuit of a scanner to perform a color space conversion on an RGB signal. The circuit has several sampling-amplified-offset devices to sample, amplify and compensate potential of an R charge signal, a G charge signal and a B charge signal to obtain an R analog signal, a G analog signal and a B analog signal. The circuit further has a gain adder to multiply the corresponding weighted gain with the R analog signal, the G analog signal and the B analog signal. The multiplication results are then summed up to obtain an addition analog signal. A multiplexer is also included to select between the R analog signal, the G analog signal, the B analog signal and the addition analog signal for output.
    • 扫描仪的电路,用于对RGB信号进行色彩空间转换。 该电路具有多个采样放大偏移器件,用于对R充电信号,G充电信号和B充电信号的电位进行采样,放大和补偿,以获得R模拟信号,G模拟信号和B模拟信号。 该电路还具有增益加法器,以将相应的加权增益与R模拟信号,G模拟信号和B模拟信号相乘。 然后将相乘结果相加以获得加法模拟信号。 还包括多路复用器,用于在R模拟信号,G模拟信号,B模拟信号和加法模拟信号之间选择输出。
    • 8. 发明授权
    • Method for selecting and adjusting scanner illuminant
    • 选择和调整扫描仪光源的方法
    • US07679791B2
    • 2010-03-16
    • US10337093
    • 2003-01-06
    • Chun-Jen Chen
    • Chun-Jen Chen
    • H04N1/04
    • H04N1/00885H04N1/00901H04N1/00904
    • A method applied in a scanner for selecting and adjusting scanner illuminants including procedures herein below is provided. Start the scanner; determine what type of power supply the scanner is connected to; select suitable illuminant which fits the adopted power supply; and start to scan. Of which, the power supply adopted is either self power or bus power, while the suitable illuminant is either a high power illuminant or a low power illuminant. Another method including procedures herein below is also provided. Start the scanner; determine what type of power supply is adopted in the scanner; adjust the drive setting for the illuminant which fits the adopted power supply; drive the illuminant; and start to scan. Of which, the power supply adopted is either self power or bus power, while the drive setting for the illuminant is either a high power setting or a low power setting.
    • 提供了一种应用于扫描仪中用于选择和调整包括以下程序的扫描仪光源的方法。 启动扫描仪; 确定扫描仪连接的电源类型; 选择适合采用电源的合适光源; 并开始扫描。 其中所采用的电源是自供电或总线电源,而适合的发光体是大功率光源或低功率光源。 还提供了包括下面的方法的另一种方法。 启动扫描仪; 确定扫描仪采用什么类型的电源? 调整适合采用电源的光源的驱动设置; 驱动光源; 并开始扫描。 其中所采用的电源是自供电或总线电源,而光源的驱动设置是高功率设置或低功率设置。
    • 9. 发明申请
    • ALL-DIGITAL PHASE-LOCKED LOOP AND BANDWIDTH ADJUSTING METHOD THEREFORE
    • 全数字锁相环和带宽调整方法
    • US20090256639A1
    • 2009-10-15
    • US12401501
    • 2009-03-10
    • Huan-Ke ChiuChun-Jen Chen
    • Huan-Ke ChiuChun-Jen Chen
    • H03L7/00
    • H03L7/107H03L1/00H03L7/099H03L2207/06H03L2207/50
    • An all-digital phase-locked loop is disclosed. The all-digital phase-locked loop includes a digitally controlled oscillator, a phase detector, a loop filter, and a bandwidth modification unit. The digitally controlled oscillator is controlled by an oscillator tuning word to generate a variable signal, wherein the oscillator tuning word includes a first tuning word and a second tuning word respectively to adjust the capacitance of a first capacitor set and the capacitance of a second capacitor set. The phase detector measures a phase error between the variable signal and a reference signal. The loop filter receives the phase error to generate an initial tuning word. The bandwidth modification unit receives the initial tuning word to adjust the initial tuning word to generate the tuning word according to the available usage range of the first capacitor set and the second capacitor set.
    • 公开了一种全数字锁相环。 全数字锁相环包括数字控制振荡器,相位检测器,环路滤波器和带宽修改单元。 数字控制振荡器由振荡器调谐字控制以产生可变信号,其中振荡器调谐字分别包括第一调谐字和第二调谐字,以调整第一电容器组的电容和第二电容器组的电容 。 相位检测器测量可变信号和参考信号之间的相位误差。 环路滤波器接收相位误差以产生初始调谐字。 带宽修改单元接收初始调谐字以根据第一电容器组和第二电容器组的可用使用范围调整初始调谐字以产生调谐字。