Patents by Inventor Chang Hee Hyoung
Chang Hee Hyoung 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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Publication number: 20240231079Abstract: Provided is a laser scanner. The laser scanner includes a laser transmitter configured to output a laser radiated towards an object, a laser receiver configured to receive a laser reflected from the object, and an oscillating mirror of which a mirror surface is coated with a thin metal film to reflect the received laser reflected from the object and be penetrated by an electromagnetic wave incident from an outside the laser scanner. The received laser reflected from the object is reflected by the mirror surface of the oscillating mirror coated with the thin metal film and received by a laser receiver, and the electromagnetic wave incident from the outside the laser scanner penetrates the mirror surface of the oscillating mirror and then dissipates.Type: ApplicationFiled: January 6, 2023Publication date: July 11, 2024Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jung Hwan HWANG, Jong Hwa KWON, Chang Hee HYOUNG
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Publication number: 20240134185Abstract: Provided is a laser scanner. The laser scanner includes a laser transmitter configured to output a laser radiated towards an object, a laser receiver configured to receive a laser reflected from the object, and an oscillating mirror of which a mirror surface is coated with a thin metal film to reflect the received laser reflected from the object and be penetrated by an electromagnetic wave incident from an outside the laser scanner. The received laser reflected from the object is reflected by the mirror surface of the oscillating mirror coated with the thin metal film and received by a laser receiver, and the electromagnetic wave incident from the outside the laser scanner penetrates the mirror surface of the oscillating mirror and then dissipates.Type: ApplicationFiled: January 6, 2023Publication date: April 25, 2024Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jung Hwan HWANG, Jong Hwa KWON, Chang Hee HYOUNG
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Publication number: 20240014336Abstract: A light-receiving device having an electromagnetic interference removal function is provided. The light-receiving device includes a waveguide-shaped structure that extends in a traveling direction of photons and high-frequency electromagnetic waves incident on a light-receiving area and that surrounds the light-receiving area, and an insulating layer configured to fix the waveguide-shaped structure.Type: ApplicationFiled: April 21, 2023Publication date: January 11, 2024Inventors: Chang Hee HYOUNG, Jung Hwan HWANG, JONG HWA KWON
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Publication number: 20240004067Abstract: A method and a device for detecting an object using a laser are provided. A laser scanner for detecting an object using a laser includes a transmitter configured to transmit a first laser, a receiver configured to receive a second laser reflected by the target object, and a reflector including a lens configured to reflect the first laser and to irradiate the first laser to the target object and to reflect the second laser to the receiver, and a mirror having a shape of a horn.Type: ApplicationFiled: December 22, 2022Publication date: January 4, 2024Inventors: Jung Hwan HWANG, JONG HWA KWON, Chang Hee HYOUNG
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Patent number: 11747380Abstract: An apparatus for electromagnetic wave evaluation may include: an electromagnetic wave non-reflecting outer structure in which electromagnetic wave absorbers are installed on interior walls and an evaluation space is formed therein; a building-simulating structure which is installed in the evaluation space inside the electromagnetic wave non-reflecting outer structure and in which electromagnetic wave absorbers capable of adjusting a quality factor are installed; a transmitting end installed inside or outside the building-simulating structure in the evaluation space and transmitting an electromagnetic wave; and a receiving end installed outside or inside the building-simulating structure in the evaluation space.Type: GrantFiled: May 2, 2022Date of Patent: September 5, 2023Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Chang Hee Hyoung, Jong Hwa Kwon, Jung Hwan Hwang
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Patent number: 11668741Abstract: An electromagnetic wave measurement system may include: a reference receiving device; a plurality of auxiliary receiving devices; and a control device connected to the reference receiving device and the plurality of auxiliary receiving devices, wherein the reference receiving device has a wider dynamic range than the plurality of auxiliary receiving devices, the control device collects a frequency-specific measurement value from each of the reference receiving device and the plurality of auxiliary receiving devices, and the frequency-specific measurement value of each of the auxiliary receiving devices is calibrated based on the frequency-specific measurement value of the reference receiving device.Type: GrantFiled: December 10, 2021Date of Patent: June 6, 2023Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Chang Hee Hyoung, Jong Hwa Kwon, Jung Hwan Hwang
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Publication number: 20230061785Abstract: An apparatus for electromagnetic wave evaluation may include: an electromagnetic wave non-reflecting outer structure in which electromagnetic wave absorbers are installed on interior walls and an evaluation space is formed therein; a building-simulating structure which is installed in the evaluation space inside the electromagnetic wave non-reflecting outer structure and in which electromagnetic wave absorbers capable of adjusting a quality factor are installed; a transmitting end installed inside or outside the building-simulating structure in the evaluation space and transmitting an electromagnetic wave; and a receiving end installed outside or inside the building-simulating structure in the evaluation space.Type: ApplicationFiled: May 2, 2022Publication date: March 2, 2023Inventors: Chang Hee HYOUNG, Jong Hwa KWON, Jung Hwan HWANG
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Publication number: 20220236311Abstract: An electromagnetic wave measurement system may include: a reference receiving device; a plurality of auxiliary receiving devices; and a control device connected to the reference receiving device and the plurality of auxiliary receiving devices, wherein the reference receiving device has a wider dynamic range than the plurality of auxiliary receiving devices, the control device collects a frequency-specific measurement value from each of the reference receiving device and the plurality of auxiliary receiving devices, and the frequency-specific measurement value of each of the auxiliary receiving devices is calibrated based on the frequency-specific measurement value of the reference receiving device.Type: ApplicationFiled: December 10, 2021Publication date: July 28, 2022Inventors: Chang Hee HYOUNG, Jong Hwa KWON, Jung Hwan HWANG
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Patent number: 11041895Abstract: A probe antenna, a probing system, and a power density measuring method to measure a power density of a near-field electromagnetic field are disposed. The probe antenna includes a board, and a conductor transmitting line formed on the board, having a constant line width, and formed in a polygonal shape or in a closed-curve shape. The conductor transmitting line is divided into a first transmitting line and a second transmitting line that are separated from each other, and includes a first receiving port formed with one end of the first transmitting line and one end of the second transmitting line and a second receiving port formed with another end of the first transmitting line and another end of the second transmitting line.Type: GrantFiled: April 17, 2020Date of Patent: June 22, 2021Assignee: Electronics and Telecommunications Research InstituteInventors: Jung Hwan Hwang, Duk Soo Kwon, Chang Hee Hyoung, Jong Hwa Kwon, Hyung Do Choi
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Publication number: 20210181245Abstract: A probe antenna, a probing system, and a power density measuring method to measure a power density of a near-field electromagnetic field are disposed. The probe antenna includes a board, and a conductor transmitting line formed on the board, having a constant line width, and formed in a polygonal shape or in a closed-curve shape. The conductor transmitting line is divided into a first transmitting line and a second transmitting line that are separated from each other, and includes a first receiving port formed with one end of the first transmitting line and one end of the second transmitting line and a second receiving port formed with another end of the first transmitting line and another end of the second transmitting line.Type: ApplicationFiled: April 17, 2020Publication date: June 17, 2021Applicant: Electronics and Telecommunications Research InstituteInventors: Jung Hwan HWANG, Duk Soo KWON, Chang Hee HYOUNG, JONG HWA KWON, Hyung Do CHOI
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Patent number: 9987187Abstract: Disclosed herein are an apparatus and method for controlling smart wear. The apparatus for controlling smart wear includes a motion capture unit, an error information unit, a motion estimation unit, and an actuation unit. The motion capture unit captures a motion of a user using sensors included in the smart wear. Then error information unit generates user error information using reference motion information and the results of the motion capture. The motion estimation unit estimates a subsequent motion of the user using the user error information. The actuation unit controls the smart wear of the user in real time using the estimated subsequent motion and the user error information.Type: GrantFiled: January 23, 2014Date of Patent: June 5, 2018Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyung-Il Park, Byoung-Gun Choi, Sung-Weon Kang, Chang-Hee Hyoung, In-Gi Lim, Tae-Wook Kang, Jung-Hwan Hwang, Kyung-Soo Kim, Jung-Bum Kim, Sung-Eun Kim, Kyung-Hwan Park, Tae-Young Kang
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Patent number: 9948404Abstract: Provided is a human body communication system including a master device configured to output a first signal based on a first data signal and a signal having a pattern in which a waveform of a first carrier wave and a waveform of a second carrier wave are repeated; and a slave device configured to receive the first signal to determine a carrier wave having a low level of attenuation among the first carrier wave and the second carrier wave, and output a second signal based on the determined carrier wave and a second data signal.Type: GrantFiled: January 9, 2017Date of Patent: April 17, 2018Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventor: Chang Hee Hyoung
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Publication number: 20170207861Abstract: Provided is a human body communication system including a master device configured to output a first signal based on a first data signal and a signal having a pattern in which a waveform of a first carrier wave and a waveform of a second carrier wave are repeated; and a slave device configured to receive the first signal to determine a carrier wave having a low level of attenuation among the first carrier wave and the second carrier wave, and output a second signal based on the determined carrier wave and a second data signal.Type: ApplicationFiled: January 9, 2017Publication date: July 20, 2017Inventor: Chang Hee HYOUNG
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Patent number: 9525310Abstract: Provided are an energy harvesting device capable of generating electric energy by effectively obtaining an electromagnetic wave emitted from an indoor lighting device and a power control system of a lighting device capable of performing self-power generation by using the energy harvesting device as a power source. The energy harvesting device using an electromagnetic wave according to an exemplary embodiment of the present disclosure includes: an interface unit made of a conductive material and configured to capture a conductive interference signal transferred through a conductive member of a lighting device; and a rectifier circuit unit configured to rectify the captured conductive interference signal to convert the rectified conductive interference signal to direct current power.Type: GrantFiled: October 18, 2012Date of Patent: December 20, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Chang Hee Hyoung, Sung Weon Kang, Jung Hwan Hwang, In Gi Lim, Jung Bum Kim, Kyung Soo Kim, Kyung Hwan Park, Hyung-Il Park, Tae Young Kang, Sung Eun Kim, Tae Wook Kang, Byoung Gun Choi
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Patent number: 9490868Abstract: An apparatus and method for transmitting data using a human body. The apparatus includes a parallel bit stream generation unit, a frequency selective spreading unit, a matched filter unit, and a transmission filter unit. The parallel bit stream generation unit outputs a parallel bit stream for an input serial bit stream. The frequency selective spreading unit divides the parallel bit stream into a preset number of bit groups, generates a single code vector by combining orthogonal code vectors corresponding to the respective bit groups, and shifts the center frequency of a transmission signal by spreading the single code vector using a frequency shift code. The transmission filter unit meets a transmit mask for the transmission signal.Type: GrantFiled: May 4, 2015Date of Patent: November 8, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Tae-Wook Kang, In-Gi Lim, Sung-Weon Kang, Kyung-Hwan Park, Chang-Hee Hyoung, Sung-Eun Kim, Jung-Bum Kim, Hyung-Il Park, Byoung-Gun Choi, Jung-Hwan Hwang
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Publication number: 20150349625Abstract: A power supply including: a first rectifying unit rectifying an AC voltage into a DC voltage; a power factor correction (PFC) circuit increasing a level of the DC voltage to improve a power factor; a first converter converting the DC voltage with the corrected power factor to generate an output DC voltage; and a power conversion circuit converting electromagnetic interference (EMI) generated in the first converter into a reproducing voltage is provided.Type: ApplicationFiled: February 3, 2015Publication date: December 3, 2015Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Chang Hee HYOUNG, Sung Weon KANG, Kyung Hwan PARK
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Publication number: 20150333842Abstract: An apparatus and method for transmitting data using a human body. The apparatus includes a parallel bit stream generation unit, a frequency selective spreading unit, a matched filter unit, and a transmission filter unit. The parallel bit stream generation unit outputs a parallel bit stream for an input serial bit stream. The frequency selective spreading unit divides the parallel bit stream into a preset number of bit groups, generates a single code vector by combining orthogonal code vectors corresponding to the respective bit groups, and shifts the center frequency of a transmission signal by spreading the single code vector using a frequency shift code. The transmission filter unit meets a transmit mask for the transmission signal.Type: ApplicationFiled: May 4, 2015Publication date: November 19, 2015Inventors: Tae-Wook KANG, In-Gi LIM, Sung-Weon KANG, Kyung-Hwan PARK, Chang-Hee HYOUNG, Sung-Eun KIM, Jung-Bum KIM, Hyung-Il PARK, Byoung-Gun CHOI, Jung-Hwan HWANG
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Patent number: 9100140Abstract: This invention relates to spreading code producing apparatus, which comprises: two phase shifters for spreading code which receive bits for determining spreading codes and phase information and producing spreading codes; and multiplexers which receive two spreading codes produced said two phase shifters for spreading code, receive bits through separate way which defines outputting order of the received two spreading codes and produce spreading codes with same length as said received two spreading codes. Therefore, many information using few spreading codes can be transmitted so that data transmission rate can be raised. Furthermore, communication service with high speed can be performed among communication devices using human body communication etc.Type: GrantFiled: May 3, 2012Date of Patent: August 4, 2015Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, CHOSUN UNIVERSITYInventors: Youn-Tae Kim, Kun-Ho Park, Jang-Myoung Kim, Min-Joo Jeong, Chang-Hee Hyoung, Jung-Hwan Hwang, Sung-Weon Kang
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Patent number: 8952676Abstract: A transmitting and receiving electrode system, and power transmission method using the same are provided. The transmitting and receiving electrode system includes: a voltage/current detection unit measuring a voltage and a current in real time while power is being transmitted between first and second electrodes; a controller calculating a variable element value based on the voltage and current values transferred from the voltage/current detection unit; and a variable element unit converting a variable element under the control of the controller to adjust an impedance of a power source.Type: GrantFiled: April 24, 2012Date of Patent: February 10, 2015Assignee: Industry-Academic Cooperation Foundation, Chosun UniversityInventors: Youn-Tae Kim, Kun-Ho Park, Jang-Myoung Kim, Min-Joo Jeong, Chang-Hee Hyoung, Jung-Hwan Hwang, Sung-Weon Kang
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Publication number: 20140355800Abstract: A hearing-aid apparatus using ultrasonic waves is inserted and mounted within an external auditory meatus of an ear, generates an ultrasonic wave band signal by single side band amplitude modulation of a sound signal that is received through a microphone, and outputs the ultrasonic wave band signal and a carrier signal that is used for single side band amplitude modulation as an ultrasonic wave signal to a transfer medium in a predetermined beam direction. Therefore, the ultrasonic wave signal forms a focal area in a damaged hearing organ area, the ultrasonic wave band signal is restored to a sound signal by nonlinear characteristics of a transfer medium in the focal area, and the damaged hearing organ detects the sound signal.Type: ApplicationFiled: May 27, 2014Publication date: December 4, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Tae Wook KANG, Jung Hwan HWANG, Sung Eun KIM, Sung Weon KANG, Chang Hee HYOUNG, Kyung Hwan PARK, Sung Won SOHN