公开(公告)号：US06977731B1

公开(公告)日：2005-12-20

申请号：US10081657

申请日：2002-02-21

Applicant: Chang-Hee Lee ,  Kwang Uk Chu

Inventor： Chang-Hee Lee ,  Kwang Uk Chu

IPC: G01B9/02 ,  G01J3/26

CPC classification number: G01J3/26

Abstract: A method and an apparatus for enhancing a resolving power of a tunable optical filter. An optical input is applied to the tunable filter. An electrical signal is applied to the tunable optical filter. The electrical signal has a first component that has a first frequency and a second component that has a second frequency. The second frequency is higher than the first frequency. An optical output of the tunable optical filter is applied to a photodetector. The electrical output from the photodetector is applied to a lock-in detector. The lock-in detector receives an input from frequency doubling circuitry. An output of the lock-in detector is monitored.

Abstract translation: 一种用于增强可调谐滤光器的分辨率的方法和装置。 光输入被施加到可调滤波器。 电信号被施加到可调谐滤光器。 电信号具有具有第一频率的第一分量和具有第二频率的第二分量。 第二频率高于第一频率。 可调光滤波器的光输出被施加到光电检测器。 来自光电检测器的电输出被施加到锁定检测器。 锁定检测器从倍频电路接收输入。 监控锁定检测器的输出。

公开(公告)号：US5651080A

公开(公告)日：1997-07-22

申请号：US707305

申请日：1996-09-03

Applicant: Kwang Uk Chu ,  Yong Hyub Won

Inventor： Kwang Uk Chu ,  Yong Hyub Won

IPC: G02B6/14 ,  H04J14/04 ,  H04Q11/00 ,  G02B6/28

CPC classification number: H04J14/04 ,  G02B6/14 ,  H04Q11/0005 ,  H04Q2011/0011 ,  H04Q2011/0015

Abstract: An optical exchanging apparatus is disclosed including N optical transmitters for generating optical signals each having a single constant mode, N mode converters for converting modes of the optical signals generated from the optical transmitters according to a mode-converting signal, an Nx1 coupler for coupling the mode-converted optical signals generated from the mode converters to be supplied to one terminal, a 1xN distributor or distributing the coupled optical signal generated from the Nx1 coupler to N optical signals each having various modes, N mode selectors for respectively passing only the optical signal of a selected mode out of the N optical signals generated from the 1xN distributor, and N optical receivers for receiving the optical signals generated from the mode selectors.

Abstract translation: 公开了一种光交换装置，其包括用于产生每个具有单个恒定模式的光信号的N个光发射机，用于根据模式转换信号转换从光发射机产生的光信号的模式的N模转换器，用于耦合 从一个终端提供的模式转换器产生的模式转换的光信号，1×N分配器或将从Nx1耦合器产生的耦合的光信号分配给每个具有各种模式的N个光信号，N个模式选择器，用于分别仅通过光信号 在从1xN分配器产生的N个光信号中选出的模式，以及N个用于接收从模式选择器产生的光信号的光接收器。

公开(公告)号：US08987610B2

公开(公告)日：2015-03-24

申请号：US13466422

申请日：2012-05-08

Applicant: Ui-Jung Kim ,  Kwang-Uk Chu ,  Jong-Kyu Kim ,  Dae-Heon Lee

Inventor： Ui-Jung Kim ,  Kwang-Uk Chu ,  Jong-Kyu Kim ,  Dae-Heon Lee

IPC: H05K9/00

CPC classification number: H05K9/0041

Abstract: A vent structure for electromagnetic shielding includes: a conductive shielding case having a vent formed therein: a conductive shielding duct installed on the shielding case so as to cover the vent, including a space formed perpendicular to the direction of motion of air discharged from the vent to vent the air and a discharge port connected from the space to the outside to discharge the air introduced into the space to the outside, and shielding electromagnetic waves; and an EMI (Electro Magnetic Interference) gasket installed at a bonding surface between the shielding case and the shielding duct, and electrically connecting the shielding case and the shielding duct.

Abstract translation: 用于电磁屏蔽的通风结构包括：导电屏蔽壳，其中形成有通风口;导电屏蔽导管，安装在屏蔽壳上，以便覆盖通风口，包括垂直于从通风口排出的空气的运动方向形成的空间 排出空气和从该空间连接到外部的排出口，将引入空间的空气排出到外部，并屏蔽电磁波; 以及安装在屏蔽壳体和屏蔽导管之间的接合表面处的EMI（电磁干扰）垫片，并且电连接屏蔽壳体和屏蔽导管。

公开(公告)号：US20130175082A1

公开(公告)日：2013-07-11

申请号：US13466422

申请日：2012-05-08

Applicant: Ui-Jung KIM ,  Kwang-Uk CHU ,  Jong-Kyu KIM ,  Dae-Heon LEE

Inventor： Ui-Jung KIM ,  Kwang-Uk CHU ,  Jong-Kyu KIM ,  Dae-Heon LEE

IPC: H05K9/00

CPC classification number: H05K9/0041

Abstract: A vent structure for electromagnetic shielding includes: a conductive shielding case having a vent formed therein: a conductive shielding duct installed on the shielding case so as to cover the vent, including a space formed perpendicular to the direction of motion of air discharged from the vent to vent the air and a discharge port connected from the space to the outside to discharge the air introduced into the space to the outside, and shielding electromagnetic waves; and an EMI (Electro Magnetic Interference) gasket installed at a bonding surface between the shielding case and the shielding duct, and electrically connecting the shielding case and the shielding duct.

Abstract translation: 用于电磁屏蔽的通风结构包括：导电屏蔽壳，其中形成有通风口;导电屏蔽导管，安装在屏蔽壳上，以便覆盖通风口，包括垂直于从通风口排出的空气的运动方向形成的空间 排出空气和从该空间连接到外部的排出口，将引入空间的空气排出到外部，并屏蔽电磁波; 以及安装在屏蔽壳体和屏蔽导管之间的接合表面处的EMI（电磁干扰）垫片，并且电连接屏蔽壳体和屏蔽导管。

公开(公告)号：US20090093211A1

公开(公告)日：2009-04-09

申请号：US12056670

申请日：2008-03-27

Applicant: Kwang Uk CHU ,  In Ho HWANG ,  Jong Kyu KIM ,  Sang Woo CHO ,  Dae Heon LEE

Inventor： Kwang Uk CHU ,  In Ho HWANG ,  Jong Kyu KIM ,  Sang Woo CHO ,  Dae Heon LEE

IPC: H04K3/00

CPC classification number: H04K3/825 ,  H04K3/42 ,  H04K3/43 ,  H04K2203/12

Abstract: Provided is a device for preventing eavesdropping through a speaker. More particularly, a device for preventing eavesdropping by transmitting a jamming signal through a speaker common signal line is provided, the device including: a jamming signal generator for generating a jamming signal comprising a noise signal; an amplifier for amplifying the jamming signal; and a transformer for receiving the amplified jamming signal from the amplifier and outputting the amplified jamming signal to a speaker common signal line. The device may transmit a jamming signal in an audible frequency band to the speaker common signal line, thereby rendering conversations unrecognizable to eavesdroppers when an electrical signal induced from a speaker is detected through the speaker common signal line.

Abstract translation: 提供了用于防止通过扬声器窃听的设备。 更具体地，提供了一种通过将扬声器公共信号线发送干扰信号来防止窃听的装置，该装置包括：干扰信号发生器，用于产生包括噪声信号的干扰信号; 用于放大干扰信号的放大器; 以及用于从放大器接收放大的干扰信号并将放大的干扰信号输出到扬声器公共信号线的变压器。 设备可以将扬声器公共信号线中的可听频带中的干扰信号发送到扬声器公共信号线，从而当通过扬声器公共信号线检测到从扬声器感应到的电信号时，使得会话无法识别到窃听器。

公开(公告)号：US08693710B2

公开(公告)日：2014-04-08

申请号：US12506624

申请日：2009-07-21

Applicant: Kwang Uk Chu ,  In Ho Hwang

Inventor： Kwang Uk Chu ,  In Ho Hwang

IPC: H04R25/00 ,  H03G3/34

CPC classification number: H03G3/34 ,  H04R3/00

Abstract: An apparatus for preventing leakage of a weak signal from a speaker is provided. The apparatus passes a normal speaker drive signal coming through speaker signal lines and blocks a weak signal generated by the sounds around the speaker, thereby preventing wiretapping the speaker.

Abstract translation: 提供一种用于防止来自扬声器的弱信号的泄漏的装置。 该装置传递通过扬声器信号线的正常扬声器驱动信号，并且阻挡由扬声器周围的声音产生的弱信号，从而防止扬声器被窃听。

公开(公告)号：US08681467B2

公开(公告)日：2014-03-25

申请号：US13326543

申请日：2011-12-15

Applicant: Kwang-Uk Chu ,  Up Namkoong ,  Kyung-Hoon Lee

Inventor： Kwang-Uk Chu ,  Up Namkoong ,  Kyung-Hoon Lee

IPC: H02H1/00

CPC classification number: H02H9/041 ,  H02H9/042

Abstract: A surge protection apparatus is provided. The surge protection apparatus includes a non-linear element unit, a signal generation unit, and a switching element unit. The non-linear element unit enables an electrical surge to pass therethrough by rapidly decreasing resistance of the non-linear element unit when the difference in voltage between two ends of the non-linear element unit is equal to or greater than a predetermined value. The signal generation unit generates a control signal in response to current which passes through the non-linear element unit. The switching element unit switches the status thereof in response to the control signal.

Abstract translation: 提供一种浪涌保护装置。 浪涌保护装置包括非线性元件单元，信号生成单元和开关元件单元。 当非线性元件单元的两端之间的电压差等于或大于预定值时，非线性元件单元能够通过快速降低非线性元件单元的电阻而使电涌通过。 信号生成单元响应于通过非线性元件单元的电流产生控制信号。 开关元件单元响应于控制信号切换其状态。

公开(公告)号：US07920822B2

公开(公告)日：2011-04-05

申请号：US12056670

申请日：2008-03-27

Applicant: Kwang Uk Chu ,  In Ho Hwang ,  Jong Kyu Kim ,  Sang Woo Cho ,  Dae Heon Lee

Inventor： Kwang Uk Chu ,  In Ho Hwang ,  Jong Kyu Kim ,  Sang Woo Cho ,  Dae Heon Lee

IPC: H04K3/00

CPC classification number: H04K3/825 ,  H04K3/42 ,  H04K3/43 ,  H04K2203/12

Abstract: Provided is a device for preventing eavesdropping through a speaker. More particularly, a device for preventing eavesdropping by transmitting a jamming signal through a speaker common signal line is provided, the device including: a jamming signal generator for generating a jamming signal comprising a noise signal; an amplifier for amplifying the jamming signal; and a transformer for receiving the amplified jamming signal from the amplifier and outputting the amplified jamming signal to a speaker common signal line. The device may transmit a jamming signal in an audible frequency band to the speaker common signal line, thereby rendering conversations unrecognizable to eavesdroppers when an electrical signal induced from a speaker is detected through the speaker common signal line.

Abstract translation: 提供了用于防止通过扬声器窃听的设备。 更具体地，提供了一种通过将扬声器公共信号线发送干扰信号来防止窃听的装置，该装置包括：干扰信号发生器，用于产生包括噪声信号的干扰信号; 用于放大干扰信号的放大器; 以及用于从放大器接收放大的干扰信号并将放大的干扰信号输出到扬声器公共信号线的变压器。 设备可以将扬声器公共信号线中的可听频带中的干扰信号发送到扬声器公共信号线，从而当通过扬声器公共信号线检测到从扬声器感应到的电信号时，使得会话无法识别到窃听器。

公开(公告)号：US20100104109A1

公开(公告)日：2010-04-29

申请号：US12506624

申请日：2009-07-21

Applicant: Kwang Uk CHU ,  In Ho HWANG

Inventor： Kwang Uk CHU ,  In Ho HWANG

IPC: G10K11/16

CPC classification number: H03G3/34 ,  H04R3/00

Abstract: An apparatus for preventing leakage of a weak signal from a speaker is provided. The apparatus passes a normal speaker drive signal coming through speaker signal lines and blocks a weak signal generated by the sounds around the speaker, thereby preventing wiretapping the speaker.

Abstract translation: 提供一种用于防止来自扬声器的弱信号的泄漏的装置。 该装置传递通过扬声器信号线的正常扬声器驱动信号，并且阻挡由扬声器周围的声音产生的弱信号，从而防止扬声器被窃听。

公开(公告)号：US07593647B2

公开(公告)日：2009-09-22

申请号：US10528445

申请日：2003-04-22

Applicant: Chang-Hee Lee ,  Kwang-Uk Chu ,  Bong-Soo Kim

Inventor： Chang-Hee Lee ,  Kwang-Uk Chu ,  Bong-Soo Kim

IPC: H04B10/04

CPC classification number: H04B10/572

Abstract: An optical transmitter has a resonance wavelength characteristic that varies with the refractive index of the optical transmitter. The optical transmitter receives a narrow band injected wavelength signal from an incoherent light source. The controller substantially matches a resonant wavelength of the optical transmitter to the wavelength of the injected wavelength signal by changing the refractive index of the optical transmitter to substantially match the resonant wavelength of the optical transmitter and the wavelength of the injected wavelength signal. A detector measures a parameter of the optical transmitter to provide a feedback signal to a controller to determine when the resonant wavelength of the optical transmitter and the wavelength of the injected wavelength signal are substantially matched.

Abstract translation: 光发射机具有随着光发射机的折射率而变化的谐振波长特性。 光发射机从非相干光源接收窄带注入的波长信号。 控制器通过改变光发射器的折射率与光发射机的谐振波长和注入的波长信号的波长基本匹配，使光发射机的谐振波长与注入的波长信号的波长匹配。 检测器测量光发射机的参数以向控制器提供反馈信号以确定光发射机的谐振波长和注入的波长信号的波长何时基本匹配。