公开(公告)号：US08674709B2

公开(公告)日：2014-03-18

申请号：US13106411

申请日：2011-05-12

申请人： Ji Hun Kim ,  Hyun Min Song ,  Joon Ho Na ,  Ki Uk Gwak ,  Sang Gug Lee

发明人： Ji Hun Kim ,  Hyun Min Song ,  Joon Ho Na ,  Ki Uk Gwak ,  Sang Gug Lee

IPC分类号： G01R27/26

CPC分类号： G06F3/044

摘要： A circuit for measuring a capacitance value of a touch screen includes: a target capacitor unit having a target capacitor charged with a target charging voltage; a target voltage control unit to charge the target capacitor; a reference capacitor unit having a reference capacitor charged with a charging reference voltage; a reference voltage control unit to charge the reference capacitor; a comparator to compare the target charging voltage and the charging reference voltage and output a transition signal at a moment when the target charging voltage becomes higher than the charging reference voltage; and a controller to receive an output signal of the comparator and a clock signal and generate a digital output signal and a control signal, wherein a capacitance value of the target capacitor is measured using a time elapsed from a time when the target capacitor is initialized to a time when the transition signal is outputted.

摘要翻译： 用于测量触摸屏的电容值的电路包括：目标电容器单元，其具有充电目标充电电压的目标电容; 目标电压控制单元，用于对目标电容器充电; 具有充电了充电参考电压的参考电容器的参考电容器单元; 参考电压控制单元，用于对参考电容器充电; 比较器，用于比较目标充电电压和充电参考电压，并在目标充电电压变得高于充电参考电压的时刻输出转换信号; 以及控制器，用于接收比较器的输出信号和时钟信号，并产生数字输出信号和控制信号，其中使用从目标电容器初始化的时间起经过的时间来测量目标电容器的电容值 输出转换信号的时间。

公开(公告)号：US20120306542A1

公开(公告)日：2012-12-06

申请号：US13250037

申请日：2011-09-30

申请人： Sang-Gug Lee ,  Seungjin Kim

发明人： Sang-Gug Lee ,  Seungjin Kim

IPC分类号： H03B21/00

CPC分类号： H03L7/1976

摘要： A frequency synthesizer includes: a delta sigma modulator that outputs an input value to a sequentially changing digital value; an analog path unit that converts the digital value to an analog value according to a first conversion gain; an accumulator that accumulates a difference between the input and digital values; a digital to analog converter (DAC) that compensates an output value of the accumulator according to a second conversion gain; a correction loop that extracts analog tendency by adding an output of the analog path unit and an output of the DAC and that extracts digital tendency from an output of the accumulator and adjusts the second conversion gain by comparing the analog and digital tendency; and a voltage control oscillator that generates an output frequency by adding an output of the analog path unit and an output according to an adjusted second conversion gain of the DAC.

摘要翻译： 频率合成器包括：ΔΣ调制器，其将输入值输出到顺序变化的数字值; 模拟路径单元，其根据第一转换增益将数字值转换为模拟值; 累加器，其累积输入和数字值之间的差; 数模转换器（DAC），其根据第二转换增益补偿所述累加器的输出值; 校正循环，通过添加模拟路径单元的输出和DAC的输出来提取模拟趋势，并且从累加器的输出提取数字趋势，并通过比较模拟和数字趋势来调整第二转换增益; 以及电压控制振荡器，其通过将所述模拟路径单元的输出和根据所述DAC的经调整的第二转换增益的输出相加来产生输出频率。

公开(公告)号：US08170523B2

公开(公告)日：2012-05-01

申请号：US12333974

申请日：2008-12-12

申请人： Hoyong Kang ,  Xiaohua Yu ,  Ji Eun Kim ,  Trung Kien Nguyen ,  Dae Young Yoon ,  Nae Soo Kim ,  Cheol Sig Pyo ,  Seok Kyun Han ,  Sang Gug Lee

发明人： Hoyong Kang ,  Xiaohua Yu ,  Ji Eun Kim ,  Trung Kien Nguyen ,  Dae Young Yoon ,  Nae Soo Kim ,  Cheol Sig Pyo ,  Seok Kyun Han ,  Sang Gug Lee

IPC分类号： H04B1/16

CPC分类号： H04B1/24 ,  H04W52/0225 ,  Y02D70/166 ,  Y02D70/40

摘要： A low power super regenerative receiver and a method of reducing the power consumption of the low power super regenerative receiver are provided. The super regenerative receiver includes: an oscillator having a start-up time period starting oscillation that varies according to an existence of an input signal; and a power controller supplying power within the start-up time period of the oscillator.

摘要翻译： 提供了一种低功率超再生接收机和降低低功率超再生接收机的功耗的方法。 超再生接收机包括：振荡器，具有根据输入信号的存在而变化的启动时间段开始振荡; 以及在振荡器的启动时间段内供电的功率控制器。

公开(公告)号：US20110279407A1

公开(公告)日：2011-11-17

申请号：US13105301

申请日：2011-05-11

申请人： Ji-Hun KIM ,  Young-Bok Kim ,  Joon-Ho Na ,  Yeong-Shin Jang ,  Sang-Gug Lee

发明人： Ji-Hun KIM ,  Young-Bok Kim ,  Joon-Ho Na ,  Yeong-Shin Jang ,  Sang-Gug Lee

IPC分类号： G06F3/044

CPC分类号： G06F3/044 ,  G01R27/2605

摘要： A circuit for processing a touch line signal of a touch screen includes a plurality of sensing read circuits and a switch unit. The plurality of sensing read circuits include sensing read-out units and integrators, respectively. The sensing read-out units are configured to precharge a first sensor capacitor and a second sensor capacitor formed on a touch screen panel with a ground voltage and a supply voltage, allow charges charged in the first sensor capacitor and the second sensor capacitor to be shared, and read-out a charge sharing result obtained by allowing the charges of the first sensor capacitor and the second sensor capacitor to be shared. The integrators are configured to integrate output voltages of the sensing read-out units. The switch unit is configured to sequentially connect output terminals of the plurality of sensing read circuits to an input terminal of an analog-to-digital converter.

摘要翻译： 用于处理触摸屏的触摸线信号的电路包括多个感测读取电路和开关单元。 多个感测读取电路分别包括感测读出单元和积分器。 感测读出单元被配置为对接地电压和电源电压在触摸屏面板上形成的第一传感器电容器和第二传感器电容器进行预充电，允许在第一传感器电容器和第二传感器电容器中充电的电荷被共享 并且读出通过允许共享第一传感器电容器和第二传感器电容器的电荷而获得的电荷共享结果。 集成器被配置为集成感测读出单元的输出电压。 开关单元被配置为将多个感测读取电路的输出端子顺序地连接到模数转换器的输入端子。

公开(公告)号：US20110279131A1

公开(公告)日：2011-11-17

申请号：US13106411

申请日：2011-05-12

申请人： Ji-Hun KIM ,  Hyun-Min SONG ,  Joon-Ho NA ,  Ki-Uk GWAK ,  Sang-Gug LEE

发明人： Ji-Hun KIM ,  Hyun-Min SONG ,  Joon-Ho NA ,  Ki-Uk GWAK ,  Sang-Gug LEE

IPC分类号： G01R27/26

CPC分类号： G06F3/044

摘要： A circuit for measuring a capacitance value of a touch screen includes: a target capacitor unit having a target capacitor charged with a target charging voltage; a target voltage control unit to charge the target capacitor; a reference capacitor unit having a reference capacitor charged with a charging reference voltage; a reference voltage control unit to charge the reference capacitor; a comparator to compare the target charging voltage and the charging reference voltage and output a transition signal at a moment when the target charging voltage becomes higher than the charging reference voltage; and a controller to receive an output signal of the comparator and a clock signal and generate a digital output signal and a control signal, wherein a capacitance value of the target capacitor is measured using a time elapsed from a time when the target capacitor is initialized to a time when the transition signal is outputted.

摘要翻译： 用于测量触摸屏的电容值的电路包括：目标电容器单元，其具有充电目标充电电压的目标电容; 目标电压控制单元，用于对目标电容器充电; 具有充电了充电参考电压的参考电容器的参考电容器单元; 参考电压控制单元，用于对参考电容器充电; 比较器，用于比较目标充电电压和充电参考电压，并在目标充电电压变得高于充电参考电压的时刻输出转换信号; 以及控制器，用于接收比较器的输出信号和时钟信号，并产生数字输出信号和控制信号，其中使用从目标电容器初始化的时间起经过的时间来测量目标电容器的电容值 输出转换信号的时间。

公开(公告)号：US07928806B2

公开(公告)日：2011-04-19

申请号：US12561910

申请日：2009-09-17

申请人： Hui Dong Lee ,  Kwi Dong Kim ,  Jong Kee Kwon ,  Jong Pil Hong ,  Sang Gug Lee

发明人： Hui Dong Lee ,  Kwi Dong Kim ,  Jong Kee Kwon ,  Jong Pil Hong ,  Sang Gug Lee

IPC分类号： H03B5/12 ,  H03L5/00 ,  H03L7/06 ,  H03L7/08 ,  H03L7/085 ,  H03L7/089 ,  H03L7/099 ,  H03L7/18

CPC分类号： H03L7/0891 ,  H03L5/00 ,  H03L7/099

摘要： Provided is a low voltage frequency synthesizer using a boosting method for a power supply voltage of a charge pump. The low voltage frequency synthesizer includes a phase/frequency detector (PFD) that receives and compares a reference frequency and a feedback frequency to output a comparison signal, a charge pump that receives the comparison signal to output a current corresponding to the comparison signal, a low-pass filter (LPF) that generates a voltage corresponding to the output current of the charge pump, a voltage controlled oscillator (VCO) that receives the voltage of the LPF, amplifies the voltage to generate a boosting voltage, and outputs a frequency corresponding to the received voltage, and a DC converter that receives the boosting voltage of the VCO, converts the boosting voltage into a DC voltage, and applies the DC voltage as a power supply voltage of the charge pump. Since the supply voltage of the charge pump is provided from the LC-circuit-based VCO, the frequency synthesizer has superior characteristics such as a wide locking range, low phase noise, and the prevention of performance degradation caused by an external environment or process variations.

摘要翻译： 提供了使用电荷泵的电源电压的升压方法的低压频率合成器。 所述低电压频率合成器包括接收比较参考频率和反馈频率以输出比较信号的相位/频率检测器（PFD），接收比较信号以输出与比较信号相对应的电流的电荷泵， 产生与电荷泵的输出电流相对应的电压的低通滤波器（LPF），接收LPF电压的压控振荡器（VCO），放大电压以产生升压电压，并输出对应的频率 以及接收VCO的升压电压的DC转换器，将升压电压转换成直流电压，并施加直流电压作为电荷泵的电源电压。 由于电荷泵的电源电压是从基于LC电路的VCO提供的，因此频率合成器具有优异的特性，例如宽锁定范围，低相位噪声，以及防止由外部环境或工艺变化引起的性能下降 。

公开(公告)号：US07616061B2

公开(公告)日：2009-11-10

申请号：US11336788

申请日：2006-01-23

申请人： Choong-yul Cha ,  Hoon-tae Kim ,  Sang-gug Lee

发明人： Choong-yul Cha ,  Hoon-tae Kim ,  Sang-gug Lee

IPC分类号： H03F3/68

CPC分类号： H03F3/211 ,  H03F1/223 ,  H03F1/26 ,  H03F1/42 ,  H03F1/483 ,  H03F3/345 ,  H03F2200/294 ,  H03F2200/36 ,  H03F2200/372 ,  H03F2200/39

摘要： A low noise amplifier (LNA) for ultra wide band receives and amplifies identical RF signals in different frequency bands, and includes more than one pair of narrow band LNAs coupled in parallel, and a load circuit which increases load impedance of the entire circuit of the narrow band LNAs. The LNA can not only amplify the RF signal in the UWB but also obtain the low noise and the high gain that are features of the conventional narrow band LNA.

摘要翻译： 用于超宽带的低噪声放大器（LNA）在不同频带中接收和放大相同的RF信号，并且包括并联耦合的多于一对窄带LNA，以及增加整个电路的负载阻抗的负载电路 窄带LNA。 LNA不仅可以放大UWB中的RF信号，还可以获得作为传统窄带LNA特征的低噪声和高增益。

公开(公告)号：US20090051442A1

公开(公告)日：2009-02-26

申请号：US12193984

申请日：2008-08-19

申请人： Ja-Won SEO ,  Yun Ah SIM ,  Sang-Gug LEE

发明人： Ja-Won SEO ,  Yun Ah SIM ,  Sang-Gug LEE

IPC分类号： H03F3/08

CPC分类号： H03F3/087 ,  H03F1/083

摘要： A transimpedance amplifier circuit for an optical receiver in an optical communication system in which a range of an increase/decrease in bandwidth according to gain change is reduced by a bandwidth adjustor. The circuit includes: a photodiode (PD) for generating a current signal by photoelectric conversion of an input optical signal; a Transimpedance Amplifier (TIA) for converting the current signal input from the photodiode into a voltage signal; an auto gain adjustor for adjusting feedback resistances of the transimpedance amplifier; a photodiode parallel capacitor reducer for reducing a parallel capacitor current of the photodiode; and a bandwidth adjustor for reducing a range of an increase/decrease in bandwidth according to an increase/decrease in gain of the transimpedance amplifier.

摘要翻译： 一种用于光通信系统中的光接收机的跨阻放大器电路，其中通过带宽调节器减小根据增益变化的带宽增加/减小的范围。 该电路包括：用于通过输入光信号的光电转换产生电流信号的光电二极管（PD）; 用于将从光电二极管输入的电流信号转换为电压信号的跨阻抗放大器（TIA）; 用于调整跨阻放大器的反馈电阻的自动增益调节器; 用于减小光电二极管的并联电容电流的光电二极管并联电容器减速器; 以及带宽调整器，用于根据跨阻放大器的增益的增加/减小来减小带宽的增加/减小的范围。

公开(公告)号：US20060173944A1

公开(公告)日：2006-08-03

申请号：US11338747

申请日：2006-01-25

申请人： Han-seung Lee ,  Jeongwook Koh ,  Jung-eun Lee ,  Hoang Duong ,  Sang-gug Lee

发明人： Han-seung Lee ,  Jeongwook Koh ,  Jung-eun Lee ,  Hoang Duong ,  Sang-gug Lee

IPC分类号： G06F1/02

CPC分类号： G06G7/26 ,  G06G7/24

摘要： An exponential function generator for generating an exponential generator to realize a linear region of about 60 dB required for the an ultra wide band system (UWB). Since the exponential function generator is implemented in a form of complementary metal oxide semiconductor fabrication (CMOS), compactness and operation control of the exponential function generator can be facilitated.

摘要翻译： 指数函数发生器，用于产生指数发生器以实现超宽带系统（UWB）所需的约60dB的线性区域。 由于指数函数发生器以互补金属氧化物半导体制造（CMOS）的形式实现，因此可以促进指数函数发生器的紧凑性和操作控制。

公开(公告)号：US06380835B1

公开(公告)日：2002-04-30

申请号：US09558394

申请日：2000-04-25

申请人： Sang Gug Lee

发明人： Sang Gug Lee

IPC分类号： H01F500

CPC分类号： H01F17/0013

摘要： A symmetric multi-layer inductor, providing an increased inductance of a conventional dual-layer inductor, exhibits a quality factor comparable to or better than that of a conventional single-layer inductor. The inductor includes a top metal patterned layer provided with a pair of groups of N number of metal lines, a bottom metal patterned layer, disposed between the substrate and the top metal patterned layer, provided with a pair of groups of N number of metal lines and an insulating material surrounding each of the metal patterned layers. In the inductor, the group of N number of metal lines on the each metal patterned layer and the other group of N number of metal lines on the same metal patterned layer are symmetric to each other with respect to an imaginary central line. Each of the metal lines has at least one via hole at one end thereof.

摘要翻译： 提供常规双层电感器的增加的电感的对称多层电感器表现出与常规单层电感器相当或更好的品质因数。 电感器包括设置有一对N组金属线的顶部金属图案化层，底层金属图案化层，设置在基板和顶部金属图案化层之间，设置有一对N组金属线 以及围绕每个金属图案化层的绝缘材料。 在电感器中，每个金属图案层上的N个金属线组和相同金属图案化层上的N个金属线的另一组组相对于虚拟中心线彼此对称。 每个金属线在其一端具有至少一个通孔。