公开(公告)号：US20140312985A1

公开(公告)日：2014-10-23

申请号：US14125400

申请日：2011-08-18

Applicant: Jea Young Shin ,  Soo Hyoung Lee

Inventor： Jea Young Shin ,  Soo Hyoung Lee

IPC: H03K7/08

CPC classification number: H03K7/08 ,  H03F3/217 ,  H03F2200/351

Abstract: A modulation apparatus for a class D switching amplifier is capable of reducing power consumption of an Electro-Migration Interface (EMI) of an output and a gate driver in a zero input signal. The modulation apparatus for a class D switching amplifier includes a control unit for detecting and outputting a control signal which is a common signal component of a first modulation signal modulated by using a first input signal and a second modulation signal modulated by using a second input signal; and is characterized by feedback of a first output signal, a second output signal and a common output signal outputted by using the first modulation signal, the second modulation signal and the control signal through an input of the modulation apparatus.

Abstract translation: 用于D类开关放大器的调制装置能够降低零输入信号中的输出和栅极驱动器的电迁移接口（EMI）的功耗。 用于D类开关放大器的调制装置包括：控制单元，用于检测并输出作为通过使用第一输入信号调制的第一调制信号和通过使用第二输入信号调制的第二调制信号的公共信号分量的控制信号 ; 其特征在于，通过调制装置的输入，通过使用第一调制信号，第二调制信号和控制信号输出的第一输出信号，第二输出信号和公共输出信号的反馈。

公开(公告)号：US20100308889A1

公开(公告)日：2010-12-09

申请号：US12867338

申请日：2009-02-09

Applicant: Soo-Hyoung Lee ,  Jae-Young Shin

Inventor： Soo-Hyoung Lee ,  Jae-Young Shin

IPC: G06G7/18

CPC classification number: H03K7/08 ,  H03F3/217

Abstract: The invention relates to a pulse width modulator, more particularly to a cross-coupled pulse width modulator. A crossing input signal modulator according to the present invention comprises: a positive path block which includes a first integrator for performing the first-order integration of feedback signals in first input and output signals and then transmitting the first—order integrated signals to a second integrator, and a second integrator for performing the second-order integration of a signal from the first integrator and a second input signal and then transmitting the second-order integrated signals; and a negative path block which includes a third integrator for performing the first-order integration of feedback signals in the second input and output signals and integration of a signal from the third integrator and the first input signal and then transmitting the second-order integrated signals. This configuration allows cross-coupling of the inputs from two integrators to generate an accurate differential pulse width modulation (PWM) single, and enables optimization of the IC implementation by adopting a feedback system that features a simplified implementation and minimal application area.

Abstract translation: 本发明涉及一种脉冲宽度调制器，更具体地涉及交叉耦合的脉冲宽度调制器。 根据本发明的交叉输入信号调制器包括：正路径块，其包括用于在第一输入和输出信号中执行反馈信号的一阶积分的第一积分器，然后将一阶积分信号发送到第二积分器 以及第二积分器，用于执行来自第一积分器的信号和第二输入信号的二次积分，然后发送二阶积分信号; 以及负路径块，其包括用于执行第二输入中的反馈信号的一级积分的第三积分器和来自第三积分器和第一输入信号的信号的积分，然后发送二阶积分信号 。 该配置允许来自两个积分器的输入的交叉耦合以产生精确的差分脉冲宽度调制（PWM）单个，并且通过采用具有简化实现和最小应用面积的反馈系统来实现IC实现的优化。

公开(公告)号：US11263776B2

公开(公告)日：2022-03-01

申请号：US16999566

申请日：2020-08-21

Applicant: CESIGN CO., LTD.

Inventor： Soo Hyoung Lee

IPC: G06T7/73 ,  G06K9/00 ,  G06K9/62

Abstract: An object recognition system using an ultrasonic sensor is proposed, the system including an amplifier amplifying an output of the ultrasonic sensor; an analog-to-digital converter converting an output of the amplifier into a digital signal; and a feature point extractor extracting feature points using an output of the analog-to-digital converter; and an object recognizer recognizing the object by using the feature points extracted from the feature point extractor.

公开(公告)号：US20210166415A1

公开(公告)日：2021-06-03

申请号：US16999566

申请日：2020-08-21

Applicant: CESIGN CO., LTD.

Inventor： Soo Hyoung LEE

IPC: G06T7/73 ,  G06K9/00 ,  G06K9/62

Abstract: An object recognition system using an ultrasonic sensor is proposed, the system including an amplifier amplifying an output of the ultrasonic sensor; an analog-to-digital converter converting an output of the amplifier into a digital signal; and a feature point extractor extracting feature points using an output of the analog-to-digital converter; and an object recognizer recognizing the object by using the feature points extracted from the feature point extractor.

公开(公告)号：US08981863B2

公开(公告)日：2015-03-17

申请号：US14125400

申请日：2011-08-18

Applicant: Jea Young Shin ,  Soo Hyoung Lee

Inventor： Jea Young Shin ,  Soo Hyoung Lee

IPC: H03K7/08 ,  H03F3/217

CPC classification number: H03K7/08 ,  H03F3/217 ,  H03F2200/351

Abstract: A modulation apparatus for a class D switching amplifier is capable of reducing power consumption of an Electro-Migration Interface (EMI) of an output end and a gate driver end in a zero input signal. The modulation apparatus for a class D switching amplifier includes a control unit for detecting and outputting a control signal which is a common signal component of a first modulation signal modulated by using a first input signal and a second modulation signal modulated by using a second input signal; and is characterized by feedback of a first output signal, a second output signal and a common output signal outputted by using the first modulation signal, the second modulation signal and the control signal through an input of the modulation apparatus.

Abstract translation: 用于D类开关放大器的调制装置能够降低零输入信号中的输出端和栅极驱动器端的电迁移接口（EMI）的功耗。 用于D类开关放大器的调制装置包括：控制单元，用于检测并输出作为通过使用第一输入信号调制的第一调制信号和通过使用第二输入信号调制的第二调制信号的公共信号分量的控制信号 ; 其特征在于，通过调制装置的输入，通过使用第一调制信号，第二调制信号和控制信号输出的第一输出信号，第二输出信号和公共输出信号的反馈。

公开(公告)号：US09651609B2

公开(公告)日：2017-05-16

申请号：US14762569

申请日：2014-11-11

Applicant: CESIGN CO., LTD.

Inventor： Soo Hyoung Lee

IPC: G01R31/3187 ,  G01R31/26 ,  G11C29/00 ,  G11C29/12

CPC classification number: G01R31/2644 ,  G11C29/00 ,  G11C29/12 ,  G11C29/1201 ,  G11C29/48

Abstract: A semiconductor circuit having a test function includes: a first circuit block including a circuit for performing a main function of the semiconductor circuit; a first power control block for controlling supply of power to the first circuit block; a second circuit block including a circuit for performing a function of testing the semiconductor circuit; and a second power control block for controlling supply of power to the second circuit block. The semiconductor circuit is operable in a first power mode in which a first pad is supplied with a supply voltage and a second pad is grounded, or in a second power mode in which the second pad is supplied with the supply voltage and the first pad is grounded. The second power control block is implemented as a diode.

公开(公告)号：US09500501B2

公开(公告)日：2016-11-22

申请号：US14405016

申请日：2013-05-27

Applicant: CESIGN CO., LTD.

Inventor： Soo Hyoung Lee ,  Jae Young Shin ,  Justin Jungsup Kim

IPC: G01R19/257 ,  G01D5/24 ,  H03F1/30 ,  H03F3/45

CPC classification number: G01D5/24 ,  H03F1/305 ,  H03F3/45475 ,  H03F2200/78 ,  H03F2203/45528

Abstract: In accordance with a startup circuit, a capacitive sensor amplification device having the startup circuit, and a startup method for the amplification device, a startup time can be shortened by connecting the high impedance resistor of an amplifier to a predetermined voltage source during startup. The capacitive sensor amplification device includes an amplification unit for amplifying a signal input to the amplification device; and a startup circuit for improving a startup time of the amplification unit, wherein the startup circuit includes a comparator for receiving an output of the amplification unit as a first comparison signal, receiving a preset reference voltage as a second comparison signal, comparing the comparison signals with each other, and outputting a comparison result; and a switch for selecting and outputting one of a first voltage and a second voltage depending on the output of the comparator.

Abstract translation: 根据启动电路，具有启动电路的电容式传感器放大装置和用于放大装置的启动方法，通过在启动期间将放大器的高阻抗电阻连接到预定电压源，可以缩短启动时间。 电容传感器放大装置包括：放大单元，用于放大输入到放大装置的信号; 以及用于改善所述放大单元的启动时间的启动电路，其中所述启动电路包括用于接收所述放大单元的输出作为第一比较信号的比较器，接收预设参考电压作为第二比较信号，比较所述比较信号 并输出比较结果; 以及用于根据比较器的输出选择和输出第一电压和第二电压中的一个的开关。

公开(公告)号：US08169244B2

公开(公告)日：2012-05-01

申请号：US12867338

申请日：2009-02-09

Applicant: Soo-Hyoung Lee ,  Jae-Young Shin

Inventor： Soo-Hyoung Lee ,  Jae-Young Shin

IPC: H03K17/92

CPC classification number: H03K7/08 ,  H03F3/217

Abstract: The invention relates to a pulse width modulator, more particularly to a cross-coupled pulse width modulator. A crossing input signal modulator according to the present invention comprises: a positive path block which includes a first integrator for performing the first-order integration of feedback signals in first input and output signals and then transmitting the first-order integrated signals to a second integrator, and a second integrator for performing the second-order integration of a signal from the first integrator and a second input signal and then transmitting the second-order integrated signals; and a negative path block which includes a third integrator for performing the first-order integration of feedback signals in the second input and output signals and integration of a signal from the third integrator and the first input signal and then transmitting the second-order integrated signals. This configuration allows cross-coupling of the inputs from two integrators to generate an accurate differential pulse width modulation (PWM) single, and enables optimization of the IC implementation by adopting a feedback system that features a simplified implementation and minimal application area.

Abstract translation: 本发明涉及一种脉冲宽度调制器，更具体地涉及交叉耦合的脉冲宽度调制器。 根据本发明的交叉输入信号调制器包括：正路径块，其包括用于在第一输入和输出信号中执行反馈信号的一阶积分的第一积分器，然后将一阶积分信号发送到第二积分器 以及第二积分器，用于执行来自第一积分器的信号和第二输入信号的二次积分，然后发送二阶积分信号; 以及负路径块，其包括用于执行第二输入中的反馈信号的一级积分的第三积分器和来自第三积分器和第一输入信号的信号的积分，然后发送二阶积分信号 。 该配置允许来自两个积分器的输入的交叉耦合以产生精确的差分脉冲宽度调制（PWM）单个，并且通过采用具有简化实现和最小应用面积的反馈系统来实现IC实现的优化。

公开(公告)号：US09628100B2

公开(公告)日：2017-04-18

申请号：US15217029

申请日：2016-07-22

Applicant: CESIGN CO., LTD.

Inventor： Soo Hyoung Lee ,  Yun Mi Na ,  Hui Kwan Yang

IPC: H03M1/00 ,  H03M1/12

CPC classification number: H03M1/1245 ,  H03M1/1225

Abstract: An analog-to-digital conversion device for multiple input signals includes a sample-and-hold amplifier and an analog-to-digital converter for converting an analog signal output from the sample-and-hold amplifier into a digital signal. According to the analog-to-digital conversion device for multiple input signals and a conversion method therefor, even if an input buffer is not provided, the dynamic range of the analog-to-digital converter may be optimally set depending on the input signals, and current consumption may be reduced.

公开(公告)号：US09270238B2

公开(公告)日：2016-02-23

申请号：US13979938

申请日：2011-05-19

Applicant: Soo-Hyoung Lee ,  Justin Jungsup Kim

Inventor： Soo-Hyoung Lee ,  Justin Jungsup Kim

IPC: H03F3/181 ,  H03F1/56 ,  H03F3/45 ,  H04R19/04

CPC classification number: H03F3/181 ,  H03F1/56 ,  H03F3/45475 ,  H04R19/04

Abstract: Provided are a digital condenser microphone having a preamplifier with variable input impedance and a method of controlling the variable input impedance of the preamplifier. The preamplifier includes a bias terminal for applying a bias voltage to an input signal when the input signal is output from a microphone condenser. An impedance unit includes at least one variable input impedance element which is connected to the bias terminal and to which the bias voltage is applied via the bias terminal. An operational amplifier receives the input signal, converts the input signal into an output signal, and outputs the output signal. A control block determines whether a DC voltage level of the output signal output from the operational amplifier has reached a reference value, and controls a total impedance of the impedance unit based on a result of the determination.

Abstract translation: 提供一种具有可变输入阻抗的前置放大器和控制前置放大器的可变输入阻抗的方法的数字电容麦克风。 前置放大器包括偏置端子，用于当麦克风冷凝器输出输入信号时将偏置电压施加到输入信号。 阻抗单元包括至少一个可变输入阻抗元件，该可变输入阻抗元件连接到偏置端子，偏置电压通过偏置端子施加到该偏置端子。 运算放大器接收输入信号，将输入信号转换成输出信号，并输出输出信号。 控制块确定从运算放大器输出的输出信号的直流电压电平是否已经达到参考值，并且基于确定的结果来控制阻抗单元的总阻抗。