Patents by Inventor Seong Yun LEE
Seong Yun LEE 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: 11968898Abstract: An organic light emitting diode (OLED) includes a first emitting material layer disposed adjacently to a first electrode and a second emitting material layer disposed adjacently to a second electrode. The first emitting material layer includes a first compound having high affinity to holes and a second compound of thermally activated delayed fluorescent material, and the second emitting material layer includes a fourth compound having high affinity to electrons and implementing triplet-triplet annihilation. Two emitting material layers having adjusted energy levels allow the OLED to lower its driving voltages and improve its luminous efficiency and luminous lifetime.Type: GrantFiled: October 22, 2020Date of Patent: April 23, 2024Assignee: LG DISPLAY CO., LTD.Inventors: Hye-Gun Ryu, Ik-Rang Choe, Jun-Yun Kim, Seong-Keun Kim, Ju-Young Lee
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Patent number: 11949746Abstract: Provided are an IoT device and an IoT communication method. The IoT device may: be connected to a server via NAT; execute a first session for service connection; and execute a second session for calculating a particular keep-alive value corresponding to a period in which an IP address mapped by the NAT expires. The present invention can minimize transmission of a keep-alive value of an IoT device, enables an IoT device to share a particular keep-alive value with other IoT devices, and thus can minimize a network load which may be caused by a keep-alive value of an IoT communication device.Type: GrantFiled: November 20, 2019Date of Patent: April 2, 2024Assignee: KOREA ELECTRONICS TECHNOLOGY INSTITUTEInventors: Seong Yun Kim, Seung Myeong Jeong, Ji Ho Lee
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Publication number: 20240105604Abstract: A three-dimensional (3D) semiconductor device includes a stack structure including first and second stacks stacked on a substrate. Each of the first and second stacks includes a first electrode and a second electrode on the first electrode. A sidewall of the second electrode of the first stack is horizontally spaced apart from a sidewall of the second electrode of the second stack by a first distance. A sidewall of the first electrode is horizontally spaced apart from the sidewall of the second electrode by a second distance in each of the first and second stacks. The second distance is smaller than a half of the first distance.Type: ApplicationFiled: December 1, 2023Publication date: March 28, 2024Inventors: Sung-Hun Lee, Seokjung Yun, Chang-Sup Lee, Seong Soon Cho, Jeehoon Han
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Patent number: 11943998Abstract: The present disclosure provides an organic light emitting diode including a first electrode; a second electrode facing the first electrode; and an emitting material layer including a first compound and a second compound positioned between the first and second electrodes, wherein the first compound includes a hexagonal-ring moiety including one boron atom, one oxygen atom and four carbon atoms, and the second compound includes a hexagonal-ring moiety including one boron atom, one nitrogen atom and four carbon atoms, and an organic light emitting device including the organic light emitting diode.Type: GrantFiled: November 20, 2020Date of Patent: March 26, 2024Assignee: LG DISPLAY CO., LTD.Inventors: Ik-Rang Choe, Hye-Gun Ryu, Jun-Yun Kim, Seong-Keun Kim, Ju-Young Lee
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Publication number: 20230108038Abstract: The detection and identification of unmanned aerial vehicles (UAVs) from a radio wave measurement result based on artificial intelligence (AI) are provided. A method of operating an apparatus to detect unmanned aerial vehicles (UAVs) includes generating a spectrogram, determining a first region to find a direction of the UAVs in the spectrogram, determining a direction of a first UAV of the UAVs based on signal values in the first region, determining a second region to identify a type of the first UAV in the spectrogram, and identifying the type of the first UAV based on signal values in the second region.Type: ApplicationFiled: August 15, 2022Publication date: April 6, 2023Applicant: HURA CO., LTD.Inventors: Sang Tae KIM, Seong Yun LEE, Mi Kyung SUK
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Patent number: 11195623Abstract: The present invention relates to a method of dental implant treatment planning, a device and a recording medium therefore. The device for dental implant treatment planning according to the present invention can move or rotate the grouped objects together in 2D or 3D model about teeth arrangement for implant treatment planning with grouping function of the implant objects. So, it decreases complexity of manipulation of the implant objects, provides users with convenience to easily modify position or size of the implant objects, and improves the accuracy of the modification.Type: GrantFiled: December 4, 2015Date of Patent: December 7, 2021Assignee: OSSTEMIMPLANT CO., LTD.Inventors: Kyoo Ok Choi, Tae Hwan Kim, Seung Yong Hwang, Seong Yun Lee
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Patent number: 10456224Abstract: The present invention relates to a method of guiding a dental implant treatment plan, a device and a recording medium therefore. The method of guiding a dental implant treatment plan according to the invention, by providing a guide to the area where the implant object is to be placed, the effects of reducing the complexity of the implant plan and decreasing procedure deviations depending on individual to individual can be achieved.Type: GrantFiled: December 4, 2015Date of Patent: October 29, 2019Assignee: OSSTEMIMPLANT CO., LTD.Inventors: Kyoo Ok Choi, Tae Hwan Kim, Seung Yong Hwang, Seong Yun Lee
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Publication number: 20170364659Abstract: The present invention relates to a method of dental implant treatment planning, a device and a recording medium therefore. The device for dental implant treatment planning according to the present invention can move or rotate the grouped objects together in 2D or 3D model about teeth arrangement for implant treatment planning with grouping function of the implant objects. So, it decreases complexity of manipulation of the implant objects, provides users with convenience to easily modify position or size of the implant objects, and improves the accuracy of the modification.Type: ApplicationFiled: December 4, 2015Publication date: December 21, 2017Applicant: OSSTEMIMPLANT CO., LTD.Inventors: Kyoo Ok CHOI, Tae Hwan KIM, Seung Yong HWANG, Seong Yun LEE
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Publication number: 20170360533Abstract: The present invention relates to a method of guiding a dental implant treatment plan, a device and a recording medium therefore. The method of guiding a dental implant treatment plan according to the invention, by providing a guide to the area where the implant object is to be placed, the effects of reducing the complexity of the implant plan and decreasing procedure deviations depending on individual to individual can be achieved.Type: ApplicationFiled: December 4, 2015Publication date: December 21, 2017Applicant: OSSTEMIMPLANT CO., LTD.Inventors: Kyoo Ok CHOI, Tae Hwan KIM, Seung Yong HWANG, Seong Yun LEE
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Patent number: 9548806Abstract: A radio measurement apparatus comprising: an array antennal selection unit selecting array antennas corresponding to received signals; a reference path selection unit selecting a reference array antenna; a signal processing unit selecting a reference antenna channel through analysis of signal characteristics measured through two reception channels; a sequential channel multiplex unit determining sequentially inputting received signals of remaining array antennas to output the sequentially input signals to a receiver; and a correction signal input unit compensating amplitude and phase characteristics of the respective reception channels.Type: GrantFiled: March 14, 2014Date of Patent: January 17, 2017Assignee: Electronics and Telecommunications Research InstituteInventors: Sang Tae Kim, Gwangmoon Park, Seong Yun Lee, Haeng Sook Ro, Mi-Kyung Suk, Yong-Seok Choi
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Publication number: 20150171976Abstract: A wideband RF receiver includes a dual mode antenna configured to drive in an active antenna mode when a bias power is supplied thereto and to drive in a passive antenna mode when a power is not supplied thereto; and a hybrid interface apparatus configured to supply the bias power to the dual mode antenna and configured to provide a control signal that enables the dual mode antenna to drive in the active antenna mode or the passive antenna mode. Further, the wideband RF receiver includes a radio measuring and receiving apparatus configured to measure a signal level of an input value that the hybrid interface apparatus outputs the control signal.Type: ApplicationFiled: March 18, 2014Publication date: June 18, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Sang Tae KIM, Haeng Sook RO, Gwangmoon PARK, Seong Yun LEE, Mi-Kyung SUK, Yong-Seok CHOI
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Publication number: 20150071310Abstract: A radio measurement apparatus comprising: an array antennal selection unit selecting array antennas corresponding to received signals; a reference path selection unit selecting a reference array antenna; a signal processing unit selecting a reference antenna channel through analysis of signal characteristics measured through two reception channels; a sequential channel multiplex unit determining sequentially inputting received signals of remaining array antennas to output the sequentially input signals to a receiver; and a correction signal input unit compensating amplitude and phase characteristics of the respective reception channels.Type: ApplicationFiled: March 14, 2014Publication date: March 12, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Sang Tae KIM, Gwangmoon PARK, Seong Yun LEE, Haeng Sook RO, Mi-Kyung SUK, Yong-Seok CHOI
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Patent number: 8805644Abstract: A digital spectrum analysis apparatus and method for direction finding (DF) and location is provided. The digital spectrum analysis apparatus includes: a multi-channel unit configured to convert signals inputted from antennas into digital signals, reduce a sampling rate of the digital signals by using a digital down converter (DDC), and convert the digital signals into baseband complex signals, and having a plurality of channels; a DF estimator configured to estimate the direction of the signal; a spectrum processing unit configured to map any one of a bearing and a power level of the baseband complex signal into coordinate system, and allocate different colors to one of the bearings and the power levels depending on the accumulation ratio of one of the bearing and the power level; and a display unit configured to display the power level and the bearing with colors.Type: GrantFiled: October 11, 2013Date of Patent: August 12, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Gwangmoon Park, Sang-Tae Kim, Seong-Yun Lee, Haeng-Sook Ro, Mi-Kyung Suk, Heung-Yong Kang, Yong-Seok Choi
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Patent number: 8766866Abstract: A log periodic antenna includes first and second transmission lines parallel with each other; and a plurality of broadband radiation elements having first sides electrically connected to the first and second transmission lines, a predetermined angle being defined between the first sides of the broadband radiation elements and the first and second transmission lines, and second sides not electrically connected with the first and second transmission lines, the second sides having radiation surfaces larger than radiation surfaces of the first sides. A plurality of broadband radiation elements electrically connected with the first transmission line and a plurality of broadband radiation elements electrically connected with the second transmission line are positioned to face each other with reference to the first and second transmission lines.Type: GrantFiled: June 18, 2010Date of Patent: July 1, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Haeng-Sook Ro, Gwang-Moon Park, Sang-Tae Kim, Seong-Yun Lee, Mi-Kyung Suk, Heung-Yong Kang, Yong-Seok Choi
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Patent number: 8718960Abstract: Provided is a method of selecting a white Gaussian noise sub-band using singular value decomposition (SVD). The method includes selecting a first frequency band, verifying whether a signal is included in the selected first frequency band, determining the first frequency band as a target measurement frequency when the signal is not included in the selected first frequency band, and measuring a background radio noise in the determined target measurement frequency.Type: GrantFiled: March 30, 2010Date of Patent: May 6, 2014Assignees: Electronics and Telecommunications Research Institute, University-Industry Cooperation Group of Kyung Hee UniversityInventors: Mi-Kyung Suk, Sang Tae Kim, Gwangmoon Park, Seong Yun Lee, Haeng Sook Ro, Heung Yong Kang, Yong-Seok Choi, Young Soo Kim, Seung Min Shin
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Publication number: 20140064349Abstract: A digital spectrum analysis apparatus and method for direction finding (DF) and location is provided. The digital spectrum analysis apparatus includes: a multi-channel unit configured to convert signals inputted from antennas into digital signals, reduce a sampling rate of the digital signals by using a digital down converter (DDC), and convert the digital signals into baseband complex signals, and having a plurality of channels; a DF estimator configured to estimate the direction of the signal; a spectrum processing unit configured to map any one of a bearing and a power level of the baseband complex signal into coordinate system, and allocate different colors to one of the bearings and the power levels depending on the accumulation ratio of one of the bearing and the power level; and a display unit configured to display the power level and the bearing with colors.Type: ApplicationFiled: October 11, 2013Publication date: March 6, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Gwangmoon PARK, Sang-Tae KIM, Seong-Yun LEE, Haeng-Sook RO, Mi-Kyung SUK, Heung-Yong KANG, Yong-Seok CHOI
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Publication number: 20140044266Abstract: The present invention provides a real-time noise reduction apparatus for a radio monitoring system, including a dual channel digitizing unit configured to convert signals, subject to frequency down-conversion and inputted to two channels, into digital signals and a Digital Signal Processor (DSP) configured to reduce noise from time sample regions of the signals, received from the dual channel digitizing unit, in a time domain using a correlation method between samples through the delayed feedback means.Type: ApplicationFiled: June 20, 2013Publication date: February 13, 2014Inventors: Sang Tae KIM, Yong Seok CHOI, Gwang Moon PARK, Seong Yun LEE, Haeng Sook RO, Mi Kyung SUK
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Patent number: 8639470Abstract: A digital spectrum analysis apparatus and method for direction finding (DF) and location is provided. The digital spectrum analysis apparatus for single-channel direction finding includes: a digital processing unit configured to receive a signal, convert the received signal into a digital signal, reduce a sampling rate of the digital signal by using a digital down converter (DDC), and convert the digital signal into a baseband complex signal; a spectrum processing unit configured to map a bearing and a power level of the baseband complex signal into coordinate system, and allocate different colors to the power levels depending on the accumulation ratio of the power levels; and a display unit configured to display the power levels with colors in order to estimate the bearing of the signal.Type: GrantFiled: August 25, 2010Date of Patent: January 28, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Gwangmoon Park, Sang-Tae Kim, Seong-Yun Lee, Haeng-Sook Ro, Mi-Kyung Suk, Heung-Yong Kang, Yong-Seok Choi
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Publication number: 20120162004Abstract: Disclosed is an apparatus and method for estimating a direction of arrival (DOA) of a signal, which improves DOA estimation performance of a reception signal having a low signal to interference and noise ratio (SINR) in a communication system. In the method, a received signal is converted into a signal of a frequency region. A noise signal is separated from the signal converted into the signal of the frequency region. A noise region is filtered by setting an occupied bandwidth from the signal having the noise signal separated therefrom. A DOA of the signal obtained through the filtering of the noise region is estimated.Type: ApplicationFiled: December 22, 2011Publication date: June 28, 2012Inventors: Sang-Tae KIM, Gwangmoon Park, Seong-Yun Lee, Haeng-Sook Ro, Mi-kyung Suk, Yong-Seok Choi
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Publication number: 20110148729Abstract: A log periodic antenna includes first and second transmission lines parallel with each other; and a plurality of broadband radiation elements having first sides electrically connected to the first and second transmission lines, a predetermined angle being defined between the first sides of the broadband radiation elements and the first and second transmission lines, and second sides not electrically connected with the first and second transmission lines, the second sides having radiation surfaces larger than radiation surfaces of the first sides. A plurality of broadband radiation elements electrically connected with the first transmission line and a plurality of broadband radiation elements electrically connected with the second transmission line are positioned to face each other with reference to the first and second transmission lines.Type: ApplicationFiled: June 18, 2010Publication date: June 23, 2011Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Haeng-Sook RO, Gwang-Moon Park, Sang-Tae Kim, Seong-Yun Lee, Mi-Kyung Suk, Heung-Yong Kang, Yong-Seok Choi