公开(公告)号：US08947277B2

公开(公告)日：2015-02-03

申请号：US13608515

申请日：2012-09-10

申请人： Kyung Hoon Lee ,  Michael Choi ,  Eun Seok Shin

发明人： Kyung Hoon Lee ,  Michael Choi ,  Eun Seok Shin

IPC分类号： H03M1/00

CPC分类号： G06F3/0416 ,  G11C27/024 ,  G11C27/026

摘要： A sample-and-hold circuit including an operational amplifier configured to output a result signal to the ADC; a feedback capacitor connected between an input terminal and an output terminal of the operational amplifier to form a feedback path; a plurality of sampling capacitor blocks each connected to one of a plurality of channels and configured to sample and hold an analog signal input to each of the channels; a plurality of controllers each connected between one of the sampling capacitor blocks and the operational amplifier; and a reset unit connected between a reference voltage source and the input terminal of the operational amplifier to reset the operational amplifier when the operational amplifier does not perform a holding operation. The plurality of controllers configured to switch the sampled signal so that held signals for the respective channels are sequentially input to the operational amplifier.

摘要翻译： 一种采样保持电路，包括：运算放大器，被配置为将结果信号输出到ADC; 反馈电容器，连接在运算放大器的输入端和输出端之间以形成反馈路径; 多个采样电容块，每个采样电容块连接到多个通道中的一个，并被配置为采样并保持输入到每个通道的模拟信号; 多个控制器，每个连接在一个采样电容块和运算放大器之间; 以及连接在基准电压源和运算放大器的输入端子之间的复位单元，以在运算放大器不执行保持操作时复位运算放大器。 配置成切换采样信号的多个控制器被顺序地输入到运算放大器。

公开(公告)号：US08166775B2

公开(公告)日：2012-05-01

申请号：US10683600

申请日：2003-10-09

申请人： Michael Choi

发明人： Michael Choi

IPC分类号： F25D17/06 ,  F25D19/00 ,  E06B7/02 ,  E04F17/04

CPC分类号： E04F17/04 ,  B60H1/00564 ,  B60H2001/006 ,  F01N1/08 ,  F01N1/086 ,  F24F2013/088

摘要： A system and method for reducing noise in an automotive heating, ventilation, and cooling system is described. A noise attenuation device using radial vanes upstream of a flow discontinuity, such as a bend in the ducting, and downstream of a blower fan is used to reduce noise.

摘要翻译： 描述了一种用于降低汽车加热，通风和冷却系统中噪声的系统和方法。 使用在流动不连续性上游的径向叶片（例如管道中的弯曲）和鼓风机风扇的下游的噪声衰减装置来降低噪声。

公开(公告)号：US20120081243A1

公开(公告)日：2012-04-05

申请号：US13228794

申请日：2011-09-09

申请人： Yong-Woo KIM ,  Michael CHOI ,  Jung-Ho LEE

发明人： Yong-Woo KIM ,  Michael CHOI ,  Jung-Ho LEE

IPC分类号： H03M1/12 ,  H03M1/66

CPC分类号： H03M1/0678 ,  H03M1/468 ,  H03M1/68 ,  H03M1/804

摘要： Provided are a capacitor digital-to-analog (DAC), an analog-to-digital converter (ADC) including the capacitor DAC, and a semiconductor device. The DAC includes at least one dummy capacitor configured to cause capacitors included in a capacitor array to have a capacitance that is an integer multiple of the capacitance of a unit capacitor.

摘要翻译： 提供了电容器数模（DAC），包括电容器DAC的模数转换器（ADC）和半导体器件。 DAC包括至少一个虚拟电容器，其被配置为使得包括在电容器阵列中的电容器具有作为单位电容器的电容的整数倍的电容。

公开(公告)号：US20110037520A1

公开(公告)日：2011-02-17

申请号：US12841558

申请日：2010-07-22

申请人： MICHAEL CHOI ,  Ho-jin Park ,  Eun-seok Shin ,  Kyoung-jun Moon ,  Seung-hoon Lee ,  Kyung-hoon Lee ,  Young-ju Kim ,  Se-won Lee ,  Beom-soo Park

发明人： MICHAEL CHOI ,  Ho-jin Park ,  Eun-seok Shin ,  Kyoung-jun Moon ,  Seung-hoon Lee ,  Kyung-hoon Lee ,  Young-ju Kim ,  Se-won Lee ,  Beom-soo Park

IPC分类号： H03F3/68

CPC分类号： H03F3/45179 ,  H03F3/68 ,  H03F3/72

摘要： A multistage amplifying circuit includes a first amplifying circuit that either samples a first analog voltage input or amplifies a difference between the first analog voltage and a first digital voltage converted from the first analog voltage, in response to a control signal. A second amplifying circuit either samples a second analog voltage input or amplifies a difference between the second analog voltage and a second digital voltage converted from the second analog voltage, in response to the control signal. A common amplifier receives output voltages of the first amplifying circuit and the second amplifying circuit and either resets the output voltage of the first amplifying circuit and determines an output voltage by using the second amplifying circuit, or resets the output voltage of the second amplifying circuit and determines an output voltage by using the first amplifying circuit, in response to the control signal.

摘要翻译： 多级放大电路包括：第一放大电路，其响应于控制信号，对第一模拟电压输入进行采样或放大第一模拟电压与从第一模拟电压转换的第一数字电压之间的差。 第二放大电路响应于控制信号对第二模拟电压输入进行采样或放大第二模拟电压与从第二模拟电压转换的第二数字电压之间的差。 公共放大器接收第一放大电路和第二放大电路的输出电压，并且复位第一放大电路的输出电压，并通过使用第二放大电路确定输出电压，或者复位第二放大电路的输出电压，以及 响应于控制信号，通过使用第一放大电路确定输出电压。

公开(公告)号：US20090160490A1

公开(公告)日：2009-06-25

申请号：US12137672

申请日：2008-06-12

申请人： Michael CHOI ,  Jung-ho LEE ,  Jung-eun LEE

发明人： Michael CHOI ,  Jung-ho LEE ,  Jung-eun LEE

IPC分类号： H03K5/153

CPC分类号： H03M1/08 ,  H03M1/362

摘要： A reference voltage generator, which is used in an analog-to-digital converter, minimizes influence of kickback noise by dividing a full scale reference voltage into a number of reference voltages using a ladder resistor unit, and applying the number of reference voltages to a number of comparators, and matches a reference common mode voltage to an input common mode voltage by forming a common feedback loop using another ladder resistor unit which is a replica of the ladder resistor unit. Therefore, since kickback noise is locally discharged by a decoupling capacitor connected to each ladder resistor and a peak value of the kickback noise is also reduced, it is possible to optimize the ladder resistor unit according to power consumption. Also, since the common feedback loop is formed as a replica of the ladder resistor unit, it is possible to match a reference common mode signal to an input common mode signal.

摘要翻译： 在模数转换器中使用的参考电压发生器通过使用梯形电阻器单元将满量程参考电压分成多个参考电压来最小化反冲噪声的影响，并将参考电压的数量应用于 比较器的数量，并且通过使用作为梯形电阻器单元的副本的另一个梯形电阻器单元形成公共反馈回路来将参考共模电压与输入共模电压相匹配。 因此，由于反冲噪声由连接到每个梯形电阻器的去耦电容器局部放电，并且反冲噪声的峰值也减小，因此可以根据功耗优化梯形电阻器单元。 此外，由于公共反馈环路形成为梯形电阻器单元的副本，因此可以将参考共模信号与输入共模信号相匹配。

公开(公告)号：USRE40621E1

公开(公告)日：2009-01-13

申请号：US09909430

申请日：2001-07-19

申请人： Michael Choi

发明人： Michael Choi

IPC分类号： F02M29/00

CPC分类号： F02D9/104 ,  F02M26/17 ,  F02M26/50 ,  F02M29/04 ,  F02M35/10222 ,  F02M35/10255 ,  F02M35/10262 ,  F02M35/1211 ,  F02M35/1216 ,  F05C2225/08 ,  Y02T10/146

摘要： An air diffuser (20) for an air intake system of an internal combustion engine. The air intake system includes a throttle body (22) up stream from an intake manifold (24), with the air diffuser (20) mounted between them. The air diffuser (20) includes vanes (62,64) extending into its main bore (52) in order to diffuse and redirect the air flowing from the throttle body (22) into the intake manifold (24). An EGR assembly (70) is mounted to the manifold (24) just downstream of the inlet to the manifold (24). The diffusion and redirection of the air reduces the noise emanating from the intake manifold (24) for particular engine operating conditions, and also reduces the backflow of EGR gasses into the throttle body (22).

摘要翻译： 一种用于内燃机的进气系统的空气扩散器（20）。 进气系统包括从进气歧管（24）向上游的节气门体（22），空气扩散器（20）安装在它们之间。 空气扩散器（20）包括延伸到其主孔（52）中的叶片（62,64），以便将从节气门体（22）流入进气歧管（24）的空气扩散和重定向。 EGR组件（70）刚好在歧管（24）的入口的下游安装到歧管（24）。 空气的扩散和重定向减少了用于特定发动机操作条件从进气歧管（24）发出的噪声，并且还减少了EGR气体回流到节流阀体（22）中的回流。

公开(公告)号：US20050076668A1

公开(公告)日：2005-04-14

申请号：US10683600

申请日：2003-10-09

申请人： Michael Choi

发明人： Michael Choi

IPC分类号： B60H1/00 ,  E04F17/04 ,  F01N1/08 ,  F24F13/08 ,  F25D17/04 ,  E06B7/02 ,  F24F7/013 ,  F25D17/06 ,  F25D19/00

CPC分类号： E04F17/04 ,  B60H1/00564 ,  B60H2001/006 ,  F01N1/08 ,  F01N1/086 ,  F24F2013/088

摘要： A system and method for reducing noise in an automotive heating, ventilation, and cooling system is described. A noise attenuation device using radial vanes upstream of a flow discontinuity, such as a bend in the ducting, and downstream of a blower fan is used to reduce noise.

摘要翻译： 描述了一种用于降低汽车加热，通风和冷却系统中噪声的系统和方法。 使用在流动不连续性上游的径向叶片（例如管道中的弯曲）和鼓风机风扇的下游的噪声衰减装置来降低噪声。

公开(公告)号：US08059071B2

公开(公告)日：2011-11-15

申请号：US11655169

申请日：2007-01-19

申请人： Yang Wan Kim ,  Michael Choi ,  Ki Myeong Eom

发明人： Yang Wan Kim ,  Michael Choi ,  Ki Myeong Eom

IPC分类号： G09G3/32

CPC分类号： G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0248 ,  G09G2310/0297 ,  G09G2320/0238 ,  G09G2320/043

摘要： A pixel and an organic light emitting display using the same, which reduces the number of output lines in a data driver and stably express black gradation. The pixel includes an organic light emitting diode; a storage capacitor coupled between a first power supply and an initialization power supply and being charged with a voltage corresponding to a data signal; a first transistor controlling an amount of an electric current supplied to the organic light emitting diode corresponding to the voltage charged in the storage capacitor; a second transistor coupled between a data line and a current scan line, supplying a data signal to be provided to the data line when a scan signal is supplied to the current scan line; a third transistor coupled between a gate electrode and a second electrode of the first transistor, and being turned-on when the scan signal is supplied to the current scan line; and a boosting capacitor coupled between the current scan line and the gate electrode of the first transistor, boosting a voltage of the gate electrode of the first transistor when a supply of the scan signal to the current scan line stops.

摘要翻译： 一种使用其的像素和有机发光显示器，其减少数据驱动器中的输出线的数量并且稳定地表现黑色渐变。 像素包括有机发光二极管; 存储电容器，耦合在第一电源和初始化电源之间，并且对与数据信号相对应的电压进行充电; 第一晶体管，其控制与存储电容器中充电的电压相对应地供给到有机发光二极管的电流量; 耦合在数据线和当前扫描线之间的第二晶体管，当将扫描信号提供给当前扫描线时，提供要提供给数据线的数据信号; 耦合在第一晶体管的栅电极和第二电极之间的第三晶体管，并且当扫描信号被提供给当前扫描线时被接通; 以及耦合在当前扫描线和第一晶体管的栅电极之间的升压电容器，当向当前扫描线的扫描信号的供应停止时，升压第一晶体管的栅电极的电压。

公开(公告)号：US08026759B2

公开(公告)日：2011-09-27

申请号：US12841558

申请日：2010-07-22

申请人： Michael Choi ,  Ho-jin Park ,  Eun-seok Shin ,  Kyoung-jun Moon ,  Seung-hoon Lee ,  Kyung-hoon Lee ,  Young-ju Kim ,  Se-won Lee ,  Beom-soo Park

发明人： Michael Choi ,  Ho-jin Park ,  Eun-seok Shin ,  Kyoung-jun Moon ,  Seung-hoon Lee ,  Kyung-hoon Lee ,  Young-ju Kim ,  Se-won Lee ,  Beom-soo Park

IPC分类号： H03F1/02

CPC分类号： H03F3/45179 ,  H03F3/68 ,  H03F3/72

摘要： A multistage amplifying circuit includes a first amplifying circuit that either samples a first analog voltage input or amplifies a difference between the first analog voltage and a first digital voltage converted from the first analog voltage, in response to a control signal. A second amplifying circuit either samples a second analog voltage input or amplifies a difference between the second analog voltage and a second digital voltage converted from the second analog voltage, in response to the control signal. A common amplifier receives output voltages of the first amplifying circuit and the second amplifying circuit and either resets the output voltage of the first amplifying circuit and determines an output voltage by using the second amplifying circuit, or resets the output voltage of the second amplifying circuit and determines an output voltage by using the first amplifying circuit, in response to the control signal.

摘要翻译： 多级放大电路包括：第一放大电路，其响应于控制信号，对第一模拟电压输入进行采样或放大第一模拟电压与从第一模拟电压转换的第一数字电压之间的差。 第二放大电路响应于控制信号对第二模拟电压输入进行采样或放大第二模拟电压与从第二模拟电压转换的第二数字电压之间的差。 公共放大器接收第一放大电路和第二放大电路的输出电压，并且复位第一放大电路的输出电压，并通过使用第二放大电路确定输出电压，或者复位第二放大电路的输出电压，以及 响应于控制信号，通过使用第一放大电路确定输出电压。

公开(公告)号：US20080036704A1

公开(公告)日：2008-02-14

申请号：US11655169

申请日：2007-01-19

申请人： Yang Wan Kim ,  Michael Choi ,  Ki Myeong Eom

发明人： Yang Wan Kim ,  Michael Choi ,  Ki Myeong Eom

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0248 ,  G09G2310/0297 ,  G09G2320/0238 ,  G09G2320/043

摘要： A pixel and an organic light emitting display using the same, which reduces the number of output lines in a data driver and stably express black gradation. The pixel includes an organic light emitting diode; a storage capacitor coupled between a first power supply and an initialization power supply and being charged with a voltage corresponding to a data signal; a first transistor controlling an amount of an electric current supplied to the organic light emitting diode corresponding to the voltage charged in the storage capacitor; a second transistor coupled between a data line and a current scan line, supplying a data signal to be provided to the data line when a scan signal is supplied to the current scan line; a third transistor coupled between a gate electrode and a second electrode of the first transistor, and being turned-on when the scan signal is supplied to the current scan line; and a boosting capacitor coupled between the current scan line and the gate electrode of the first transistor, boosting a voltage of the gate electrode of the first transistor when a supply of the scan signal to the current scan line stops.

摘要翻译： 一种使用其的像素和有机发光显示器，其减少数据驱动器中的输出线的数量并且稳定地表现黑色渐变。 像素包括有机发光二极管; 存储电容器，耦合在第一电源和初始化电源之间，并且对与数据信号相对应的电压进行充电; 第一晶体管，其控制与存储电容器中充电的电压相对应地供给到有机发光二极管的电流量; 耦合在数据线和当前扫描线之间的第二晶体管，当将扫描信号提供给当前扫描线时，提供要提供给数据线的数据信号; 耦合在第一晶体管的栅电极和第二电极之间的第三晶体管，并且当扫描信号被提供给当前扫描线时被接通; 以及耦合在当前扫描线和第一晶体管的栅电极之间的升压电容器，当向当前扫描线的扫描信号的供应停止时，升压第一晶体管的栅电极的电压。