公开(公告)号：US06750563B2

公开(公告)日：2004-06-15

申请号：US10317867

申请日：2002-12-12

Applicant: Joseph R. Rostron ,  Dong-Myung Lee

Inventor： Joseph R. Rostron ,  Dong-Myung Lee

IPC: H02J100

CPC classification number: H02M5/293 ,  Y10T307/858

Abstract: A voltage sag and over-voltage compensation device for an AC electric power distribution system employing cascaded switching devices and a pulse-width modulated transformer. Each stage of the cascaded switching device includes a switching element located within a full-bridge rectifier circuit to allow bi-directional switching through each switching element (i.e., switching through the same switching element during the positive and negative portions of the AC voltage cycle). Each full-bridge rectifier also includes a snubber circuit connected in parallel with a corresponding switching element to absorb the current discharge caused by switching the input power supply to the transformer through the corresponding switching device under non-zero current conditions. On the output side, the voltage sag and over-voltage compensation device includes a filter capacitor to smooth the voltage-corrected AC power supply toward a sinusoidal power supply at the system frequency, and a notch filter to remove noise created by the switching elements.

Abstract translation: 一种采用级联开关装置和脉冲宽度调制变压器的交流配电系统的电压骤降和过压补偿装置。 级联开关器件的每个级包括位于全桥整流器电路内的开关元件，以允许通过每个开关元件的双向开关（即，在交流电压周期的正和负部分期间切换相同的开关元件） 。 每个全桥整流器还包括与对应的开关元件并联连接的缓冲电路，以吸收由于在非零电流条件下通过相应的开关器件将输入电源切换到变压器而导致的电流放电。 在输出侧，电压骤降和过电压补偿装置包括滤波电容器，用于在系统频率下平滑经电压校正的AC电源朝向正弦电源;以及陷波滤波器，以消除由开关元件产生的噪声。

公开(公告)号：US07679542B2

公开(公告)日：2010-03-16

申请号：US11508653

申请日：2006-08-23

Applicant: Seog-Heon Ham ,  Gunhee Han ,  Dong-Myung Lee

Inventor： Seog-Heon Ham ,  Gunhee Han ,  Dong-Myung Lee

IPC: H03M1/56

CPC classification number: H04N5/3742 ,  H04N5/3575 ,  H04N5/378

Abstract: An image sensor comprises an active pixel sensor (APS) array, a first analog-to-digital converter (ADC) and a ramp signal generator. The APS array includes a plurality of pixels arranged in a two-dimensional matrix, wherein the APS array generates a reset signal and an image signal for each selected column of the APS array. The first ADC includes a correlated double sampling (CDS) circuit array comprising CDS circuits that are arranged for each column of the APS array, wherein the first ADC generates a digital code from a signal corresponding to the difference between the reset signal and the image signal which are generated by the CDS circuit using a ramp signal. The ramp signal generator generates the ramp signal, wherein a second ADC receives a feedback of the generated ramp signal and generates a feedback reference code, and wherein the ramp signal generator calibrates the ramp signal based on a comparison using the feedback reference code.

Abstract translation: 图像传感器包括有源像素传感器（APS）阵列，第一模数转换器（ADC）和斜坡信号发生器。 APS阵列包括以二维矩阵排列的多个像素，其中APS阵列为APS阵列的每个选定的列产生复位信号和图像信号。 第一ADC包括相关双采样（CDS）电路阵列，其包括为APS阵列的每列排列的CDS电路，其中第一ADC从与复位信号和图像信号之间的差对应的信号产生数字码 其由CDS电路使用斜坡信号产生。 斜坡信号发生器产生斜坡信号，其中第二ADC接收产生的斜坡信号的反馈并产生反馈参考码，并且其中斜坡信号发生器基于使用反馈参考码的比较来校准斜坡信号。

公开(公告)号：US20090058841A1

公开(公告)日：2009-03-05

申请号：US12038758

申请日：2008-02-27

Applicant: Jin-Woo Jung ,  Dong-Myung Lee

Inventor： Jin-Woo Jung ,  Dong-Myung Lee

IPC: G06F3/038

CPC classification number: G09G3/293 ,  G09G3/2927 ,  G09G3/294 ,  G09G3/2965

Abstract: A plasma display and a method of driving the plasma display. The plasma display includes a plasma display panel including a plurality of discharge cells corresponding to sustain electrodes and scan electrodes. A first transistor is coupled between a first power source and a node coupled to the scan electrodes. A second transistor and a diode are coupled in series between a second power source and the node. The first and second transistors are alternately turned on during a sustain period, and the diode is configured to interrupt a current flowing from the second power source to the node.

Abstract translation: 等离子体显示器和驱动等离子体显示器的方法。 等离子体显示器包括等离子体显示面板，其包括对应于维持电极和扫描电极的多个放电单元。 第一晶体管耦合在第一电源和耦合到扫描电极的节点之间。 第二晶体管和二极管串联在第二电源和节点之间。 第一和第二晶体管在维持周期期间交替地导通，并且二极管被配置为中断从第二电源流向节点的电流。

公开(公告)号：US20080111057A1

公开(公告)日：2008-05-15

申请号：US11874404

申请日：2007-10-18

Applicant: Dong-Myung LEE ,  Dong-Soo KIM ,  Gun-Hee HAN ,  Seog-Heon HAM

Inventor： Dong-Myung LEE ,  Dong-Soo KIM ,  Gun-Hee HAN ,  Seog-Heon HAM

IPC: H01L27/00

CPC classification number: H04N5/378 ,  H01L27/14643 ,  H04N5/3535

Abstract: A complementary metal oxide semiconductor (CMOS) image sensor includes a photodiode, a switch and a comparator. The switch transfers a sensing signal to a sensing node from the photodiode. The comparator, which is directly connected to the sensing node, compares the sensing signal of the sensing node with a reference signal. The comparator outputs a signal corresponding to a voltage difference between the sensing signal and the reference signal.

Abstract translation: 互补金属氧化物半导体（CMOS）图像传感器包括光电二极管，开关和比较器。 开关将感测信号从光电二极管传送到感测节点。 直接连接到感测节点的比较器将感测节点的感测信号与参考信号进行比较。 比较器输出对应于感测信号和参考信号之间的电压差的信号。

公开(公告)号：US20070080903A1

公开(公告)日：2007-04-12

申请号：US11540787

申请日：2006-09-28

Applicant: Dong-Myung Lee

Inventor： Dong-Myung Lee

IPC: G09G3/28

CPC classification number: G09G3/2932 ,  G09G2310/066 ,  G09G2320/041 ,  G09G2330/028 ,  H02M3/33507

Abstract: A plasma display device includes a PDP, a driver for supplying driving signals to the PDP, and a power supply for supplying a power source to the driver. The power supply includes first and second resistors coupled in series between two terminals for outputting a predetermined output voltage, and a shunt regulator for maintaining a node of the first and second resistors at a constant voltage by coupling a node of the first and second resistors to a reference terminal. At least one of the first and second resistors is a variable resistor of which a resistance is changed by a change of temperature. With such a structure, a low discharge may be prevented when the power supply changes a predetermined voltage used in the plasma display device according to a change of temperature.

Abstract translation: 等离子体显示装置包括PDP，用于向PDP提供驱动信号的驱动器，以及用于向驱动器供电的电源。 电源包括串联耦合在两个端子之间用于输出预定输出电压的第一和第二电阻器和用于通过将第一和第二电阻器的节点耦合到第一和第二电阻器的节点而将第一和第二电阻器的节点保持在恒定电压的并联稳压器 参考终端。 第一和第二电阻器中的至少一个是电阻随温度变化而改变的可变电阻器。 利用这种结构，当电源根据温度的变化改变等离子体显示装置中使用的预定电压时，可以防止低放电。

公开(公告)号：US20070046802A1

公开(公告)日：2007-03-01

申请号：US11508653

申请日：2006-08-23

Applicant: Seog-Heon Ham ,  Gunhee Han ,  Dong-Myung Lee

Inventor： Seog-Heon Ham ,  Gunhee Han ,  Dong-Myung Lee

IPC: H04N5/335

CPC classification number: H04N5/3742 ,  H04N5/3575 ,  H04N5/378

Abstract: An image sensor comprises an active pixel sensor (APS) array, a first analog-to-digital converter (ADC) and a ramp signal generator. The APS array includes a plurality of pixels arranged in a two-dimensional matrix, wherein the APS array generates a reset signal and an image signal for each selected column of the APS array. The first ADC includes a correlated double sampling (CDS) circuit array comprising CDS circuits that are arranged for each column of the APS array, wherein the first ADC generates a digital code from a signal corresponding to the difference between the reset signal and the image signal which are generated by the CDS circuit using a ramp signal. The ramp signal generator generates the ramp signal, wherein a second ADC receives a feedback of the generated ramp signal and generates a feedback reference code, and wherein the ramp signal generator calibrates the ramp signal based on a comparison using the feedback reference code.

Abstract translation: 图像传感器包括有源像素传感器（APS）阵列，第一模数转换器（ADC）和斜坡信号发生器。 APS阵列包括以二维矩阵排列的多个像素，其中APS阵列为APS阵列的每个选定的列产生复位信号和图像信号。 第一ADC包括相关双采样（CDS）电路阵列，其包括为APS阵列的每列排列的CDS电路，其中第一ADC从与复位信号和图像信号之间的差对应的信号产生数字码 其由CDS电路使用斜坡信号产生。 斜坡信号发生器产生斜坡信号，其中第二ADC接收产生的斜坡信号的反馈并产生反馈参考码，并且其中斜坡信号发生器基于使用反馈参考码的比较来校准斜坡信号。

公开(公告)号：US20070040766A1

公开(公告)日：2007-02-22

申请号：US11504261

申请日：2006-08-14

Applicant: Dong-Myung Lee

Inventor： Dong-Myung Lee

IPC: G09G3/28

CPC classification number: G09G3/2965 ,  G09G3/293 ,  G09G3/294 ,  G09G2330/06

Abstract: In the plasma display device, a voltage of a power recovery capacitor is set to be greater than half of a sustain discharge voltage when a voltage of a power recovery circuit is increased, and is set to be lower than half of the sustain discharge voltage when the voltage of the power recovery circuit is decreased. Accordingly, power recovery efficiency can be improved.

Abstract translation: 在等离子体显示装置中，当功率恢复电路的电压增加时，功率恢复电容器的电压被设定为大于维持放电电压的一半，并且设定为低于维持放电电压的一半时的维持放电电压的一半 功率恢复电路的电压降低。 因此，能够提高功率回收效率。

公开(公告)号：US06525497B2

公开(公告)日：2003-02-25

申请号：US09813149

申请日：2001-03-21

Applicant: Dong Myung Lee ,  Jae Yoon Oh ,  Dal Ho Cheong

Inventor： Dong Myung Lee ,  Jae Yoon Oh ,  Dal Ho Cheong

IPC: H02P700

CPC classification number: H02P27/08

Abstract: Disclosed are a phase distortion compensating apparatus and method for reducing a torque ripple in a 3-phase motor using four switching elements, which are capable of adjusting respective switching times of phase voltages, to be supplied to the 3-phase motor by an inverter including the switching elements, based on a voltage difference between upper and lower DC link capacitors respectively adapted to supply voltages to the inverter, thereby reducing a torque ripple generated in the motor. The apparatus includes a rectifier unit, upper and lower DC link capacitors connected in parallel to the rectifier unit, each of the capacitors serving to conduct charge and discharge operations for a DC voltage outputted from the rectifier unit, an inverter connected in parallel to the capacitors and adapted to generate a 3-phase voltage adapted to rotate the motor, based on voltages respectively discharged from the capacitors along with a switching signal, and a voltage command generator for calculating compensation components for respective switching operations of switching elements of A and B phases included in the inverter, based on a voltage difference between the capacitors, a difference between an actual motor speed and a command speed, and a rotor position, and providing respective switching times including the calculated compensation components, thereby controlling a rotating speed of the motor.

公开(公告)号：US6159792A

公开(公告)日：2000-12-12

申请号：US224042

申请日：1998-12-30

Applicant: Sang Wook Kim ,  Dong Myung Lee ,  Ik Soo Choi

Inventor： Sang Wook Kim ,  Dong Myung Lee ,  Ik Soo Choi

IPC: H01L27/06 ,  H01L21/02 ,  H01L21/311 ,  H01L21/8242

CPC classification number: H01L28/84 ,  H01L21/31116 ,  H01L27/10852 ,  H01L28/91

Abstract: An improved method for forming a capacitor which is capable of increasing cell capacitance is disclosed. The capacitor easily formed a sequential two-step etching processes. The two-step etching include a selectively etching to form the contact hole for exposing an etch stop layer between gate electrodes, and an isotopically dry etching to maximize capacitor surface area without cleaning process after the selectively etching, an interlayer insulating layer being patterned in a manner which produces inner interlayer contact sidewalls having standing wave ripples and removes the exposed etch stop layer. As a result, it is found that the capacitor which is obtained by a simple and easy two-step dry etching exhibits an increased capacitor surface area. Furthermore, it is possible to form the stacked capacitor having sufficiently high storage capacitance without increasing the contact resistance.

Abstract translation: 公开了一种用于形成能够增加单元电容的电容器的改进方法。 电容器容易形成顺序的两步蚀刻工艺。 两级蚀刻包括选择性蚀刻以形成用于在栅电极之间暴露蚀刻停止层的接触孔和在选择性蚀刻之后不进行清洁处理的电容器表面积最大化的同位素干蚀刻，层间绝缘层被图案化 产生具有驻波波纹的内层间接触侧壁并去除暴露的蚀刻停止层的方式。 结果发现，通过简单且容易的两步干蚀刻获得的电容器表现出增加的电容器表面积。 此外，可以形成具有足够高的存储电容的层叠电容器，而不增加接触电阻。