Patents by Inventor Hui-Rae Cho
Hui-Rae Cho has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10320518Abstract: An apparatus and a method for preventing an information leakage. The apparatus for preventing the information leakage includes a shielding signal pattern generation unit configured to generate a shielding signal pattern including a radiation band and a radiation suppression band; a shielding signal generation unit configured to generate an electromagnetic leakage shielding signal corresponding to an Orthogonal Frequency Division Multiplexing (OFDM) scheme by using the shielding signal pattern; a signal amplification unit configured to amplify a transmitting power of the electromagnetic leakage shielding signal; and an antenna unit configured to transmit the amplified electromagnetic leakage shielding signal.Type: GrantFiled: November 9, 2017Date of Patent: June 11, 2019Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hui-Rae Cho, Jin-Hyun Kim, In-Ho Hwang, Sae-Hoon Ju, Kyung-Hoon Lee
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Publication number: 20180191458Abstract: An apparatus and a method for preventing an information leakage. The apparatus for preventing the information leakage includes a shielding signal pattern generation unit configured to generate a shielding signal pattern including a radiation band and a radiation suppression band; a shielding signal generation unit configured to generate an electromagnetic leakage shielding signal corresponding to an Orthogonal Frequency Division Multiplexing (OFDM) scheme by using the shielding signal pattern; a signal amplification unit configured to amplify a transmitting power of the electromagnetic leakage shielding signal; and an antenna unit configured to transmit the amplified electromagnetic leakage shielding signal.Type: ApplicationFiled: November 9, 2017Publication date: July 5, 2018Inventors: Hui-Rae CHO, Jin-Hyun KIM, In-Ho HWANG, Sae-Hoon JU, Kyung-Hoon LEE
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Patent number: 9559794Abstract: A signal detection apparatus includes a signal reception unit, an Analog to Digital (A/D) signal processing unit, and a user interface unit. The signal reception unit receives an external signal. The A/D signal processing unit determines whether the received signal is an abnormal signal based on a plurality of signal profiles having different signal characteristics, and obtains the abnormal signal if, as a result of the determination, it is determined that the received signal is the abnormal signal. The user interface unit displays the abnormal signal.Type: GrantFiled: October 27, 2013Date of Patent: January 31, 2017Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young-Hyoun Kwon, Kyung-Hoon Lee, Hui-Rae Cho, Jae-Ki Lee, Hee-Sun Park, Jin-Gak Jang, Jin-Hyun Kim, Ji-Eun Kim, In-Ho Hwang, Chun-Soo Kim
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Patent number: 9322898Abstract: An apparatus and method for estimating the direction of an RF signal is provided. The apparatus includes an antenna for receiving an RF signal. An electronic compass is configured to, as a pointing direction of the antenna is varied, generate information about pointing directions and pointing angles corresponding to variations in the pointing direction of the antenna. A control unit determines RSSI values at respective pointing angles of the antenna based on a received signal of the antenna and information of the electronic compass depending on the variations, extracts a maximum RSSI value from the RSSI values at respective pointing angles, and stores the maximum RSSI value and a pointing direction corresponding to the maximum RSSI value. A display unit displays the RSSI values at the respective pointing angles and a trajectory of the RSSI values at respective pointing angles under control of the control unit.Type: GrantFiled: June 14, 2013Date of Patent: April 26, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jong-Kyu Kim, Hui-Rae Cho, Jin-Gak Jang, In-Ho Hwang, Chun-Soo Kim
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Patent number: 9264174Abstract: A wideband intelligent jamming control apparatus and method is provided, which efficiently control an unauthorized threat signal. The wideband intelligent jamming control apparatus includes a signal detection terminal for detecting and analyzing wideband frequency signals in real time, and transmitting a jamming command and jamming signal specification information if a corresponding wideband frequency signal is determined to be an unauthorized threat signal. A jamming terminal receives the jamming command and the jamming signal specification information, and generates and emits a jamming signal based on the jamming command and the jamming signal specification information. The signal detection terminal and the jamming terminal may be configured to be physically separated from each other and may be controlled on a network.Type: GrantFiled: May 17, 2013Date of Patent: February 16, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jin-Gak Jang, Hui-Rae Cho, In-Ho Hwang, Jong-Kyu Kim, Chun-Soo Kim
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Publication number: 20140152505Abstract: An apparatus and method for estimating the direction of an RF signal is provided. The apparatus includes an antenna for receiving an RF signal. An electronic compass is configured to, as a pointing direction of the antenna is varied, generate information about pointing directions and pointing angles corresponding to variations in the pointing direction of the antenna. A control unit determines RSSI values at respective, pointing angles of the antenna based on a received signal of the antenna and information of the electronic compass depending on the variations, extracts a maximum RSSI value from the RSSI values at respective pointing angles, and stores the maximum RSSI value and a pointing direction corresponding to the maximum RSSI value. A display unit displays the RSSI values at the respective pointing angles and a trajectory of the RSSI values at respective pointing angles under control of the control unit.Type: ApplicationFiled: June 14, 2013Publication date: June 5, 2014Inventors: Jong-Kyu KIM, Hui-Rae CHO, Jin-Gak JANG, In-Ho HWANG, Chun-Soo KIM
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Publication number: 20140152811Abstract: A signal detection apparatus includes a signal reception unit, an Analog to Digital (A/D) signal processing unit, and a user interface unit. The signal reception unit receives an external signal. The A/D signal processing unit determines whether the received signal is an abnormal signal based on a plurality of signal profiles having different signal characteristics, and obtains the abnormal signal if, as a result of the determination, it is determined that the received signal is the abnormal signal. The user interface unit displays the abnormal signal.Type: ApplicationFiled: October 27, 2013Publication date: June 5, 2014Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young-Hyoun KWON, Kyung-Hoon LEE, Hui-Rae CHO, Jae-Ki LEE, Hee-Sun PARK, Jin-Gak JANG, Jin-Hyun KIM, Ji-Eun KIM, In-Ho HWANG, Chun-Soo KIM
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Publication number: 20130316638Abstract: A wideband intelligent jamming control apparatus and method is provided, which efficiently control an unauthorized threat signal. The wideband intelligent jamming control apparatus includes a signal detection terminal for detecting and analyzing wideband frequency signals in real time, and transmitting a jamming command and jamming signal specification information if a corresponding wideband frequency signal is determined to be an unauthorized threat signal. A jamming terminal receives the jamming command and the jamming signal specification information, and generates and emits a jamming signal based on the jamming command and the jamming signal specification information. The signal detection terminal and the jamming terminal may be configured to be physically separated from each other and may be controlled on a network.Type: ApplicationFiled: May 17, 2013Publication date: November 28, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: Jin-Gak JANG, Hui-Rae CHO, In-Ho HWANG, Jong-Kyu KIM, Chun-Soo KIM
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Patent number: 8458241Abstract: The present invention relates to a memory address generating method and a twiddle factor generator using the memory address generating method in a fast Fourier transform (FFT) system. In the memory address generating method for generating a memory address of a twiddle factor in a fast Fourier transform (FFT) system according to an embodiment of the present invention: a) a temporary address value of a second twiddle factor is induced and generated based on a first twiddle factor; b) a control signal for controlling the system is generated based on the generated temporary address value; and c) a memory address value of the second twiddle factor is generated from the temporary address value.Type: GrantFiled: December 6, 2006Date of Patent: June 4, 2013Assignee: Electronic and Telecommunications Research InstituteInventors: Hui-Rae Cho, Gweon-Do Jo, Jin-Up Kim
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Publication number: 20080307026Abstract: The present invention relates to a memory address generating method and a twiddle factor generator using the memory address generating method in a fast Fourier transform (FFT) system. In the memory address generating method for generating a memory address of a twiddle factor in a fast Fourier transform (FFT) system according to an embodiment of the present invention: a) a temporary address value of a second twiddle factor is induced and generated based on a first twiddle factor; b) a control signal for controlling the system is generated based on the generated temporary address value; and c) a memory address value of the second twiddle factor is generated from the temporary address value.Type: ApplicationFiled: December 6, 2006Publication date: December 11, 2008Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITInventors: Hui-Rae Cho, Gweon-Do Jo, Jin-Up Kim