Patents by Inventor Byung Gyu Chae
Byung Gyu Chae 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: 11768463Abstract: Provided are a method of displaying a digital holographic image and a digital hologram display apparatus, the method including generating and converting a digital hologram, recording the digital hologram in a spatial light modulator, radiating coherent parallel light to the spatial light modulator, removing an aliasing noise image, and implementing a reconstructed image reconstructed by the spatial light modulator.Type: GrantFiled: June 25, 2020Date of Patent: September 26, 2023Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventor: Byung Gyu Chae
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Patent number: 11699242Abstract: A system and method for hologram synthesis and processing capable of synthesizing holographic 3D data and displaying (or reconstructing) a full 3D image at high speed using a deep learning engine. The system synthesizes or generates a digital hologram from a light field refocus image input using the deep learning engine. That is, RGB-depth map data is acquired at high speed using the deep learning engine, such as a convolutional neural network (CNN), from real 360° multi-view color image information and the RGB-depth map data is used to produce hologram content. In addition, the system interlocks hologram data with user voice recognition and gesture recognition information to display the hologram data at a wide viewing angle and enables interaction with the user.Type: GrantFiled: February 19, 2021Date of Patent: July 11, 2023Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Min Sung Yoon, Byung Gyu Chae
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Publication number: 20230144036Abstract: A 3D optical microscope device of a small form factor optical system is disclosed. A transmission optical system device comprises a first lens having a left side disposed in contact with an input plane, and a second lens having a right side disposed in contact with a rear focal plane and disposed at a position spaced apart by a focal length of the first lens. The first lens and the second lens Fourier-transform a light signal incident on the input plane and output the transformed signal to the rear focal plane.Type: ApplicationFiled: November 4, 2022Publication date: May 11, 2023Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyun Eui KIM, Byung Gyu CHAE
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Publication number: 20210264628Abstract: A system and method for hologram synthesis and processing capable of synthesizing holographic 3D data and displaying (or reconstructing) a full 3D image at high speed using a deep learning engine. The system synthesizes or generates a digital hologram from a light field refocus image input using the deep learning engine. That is, RGB-depth map data is acquired at high speed using the deep learning engine, such as a convolutional neural network (CNN), from real 360° multi-view color image information and the RGB-depth map data is used to produce hologram content. In addition, the system interlocks hologram data with user voice recognition and gesture recognition information to display the hologram data at a wide viewing angle and enables interaction with the user.Type: ApplicationFiled: February 19, 2021Publication date: August 26, 2021Inventors: Min Sung YOON, Byung Gyu CHAE
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Publication number: 20200409307Abstract: Provided are a method of displaying a digital holographic image and a digital hologram display apparatus, the method including generating and converting a digital hologram, recording the digital hologram in a spatial light modulator, radiating coherent parallel light to the spatial light modulator, removing an aliasing noise image, and implementing a reconstructed image reconstructed by the spatial light modulator.Type: ApplicationFiled: June 25, 2020Publication date: December 31, 2020Inventor: Byung Gyu CHAE
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Patent number: 10650555Abstract: Provided are an image system and an image reconstruction method using the same. The image system includes an image scan device, a spectrum signal generation device, and an image recovery device. The image scan device generates a magnetic particle detection signal on the basis of an induced magnetic field induced from a magnetic particle. The spectrum signal generation device transforms the magnetic particle detection signal to a detection spectrum signal on the basis of a two-dimensional Fourier transform kernel. The image recovery device generates an image signal on the basis of the detection spectrum signal and a system matrix. According to the inventive concept, a data amount for image reconstruction may be ensured.Type: GrantFiled: June 1, 2018Date of Patent: May 12, 2020Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Byung Gyu Chae, Yoon Seon Song, Sung Woong Shin, SooYeul Lee, Hyo Bong Hong
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Publication number: 20180350111Abstract: Provided are an image system and an image reconstruction method using the same. The image system includes an image scan device, a spectrum signal generation device, and an image recovery device. The image scan device generates a magnetic particle detection signal on the basis of an induced magnetic field induced from a magnetic particle. The spectrum signal generation device transforms the magnetic particle detection signal to a detection spectrum signal on the basis of a two-dimensional Fourier transform kernel. The image recovery device generates an image signal on the basis of the detection spectrum signal and a system matrix. According to the inventive concept, a data amount for image reconstruction may be ensured.Type: ApplicationFiled: June 1, 2018Publication date: December 6, 2018Inventors: Byung Gyu CHAE, Yoon Seon SONG, Sung Woong SHIN, SooYeul LEE, Hyo Bong HONG
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Publication number: 20150234350Abstract: The present invention proposes a digital holographic display apparatus including a light generating unit configured to generate coherent light, a spatial light modulator configured to reproduce 3-dimensional hologram images on a space by modulating the coherent light, a vertical viewing angle magnifying unit configured to expand a vertical viewing angle by vertically steering a beam that forms the hologram images through a first mirror, a horizontal viewing angle magnifying unit configured to expand a horizontal viewing angle by steering the beam to top of a table through a second mirror, and a control unit configured to control the special light modulator, the vertical viewing angle magnifying unit and the horizontal viewing angle magnifying unit in order the hologram images to be formed on an observation space for hologram. Accordingly, by expanding the horizontal and vertical viewing angles of hologram images, an observer may observe the hologram images more comfortably.Type: ApplicationFiled: December 19, 2014Publication date: August 20, 2015Inventors: Min Sik PARK, Hyun Eui KIM, Byung Gyu CHAE, Hyon Gon CHOO, Kyung Ae MOON, Jin Woong KIM
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Patent number: 8995037Abstract: Holographic display apparatuses are provided. The holographic display apparatus may include a light source module generating coherent light, at least two input optical systems converging the light generated from the light source module on at least two converging points, an output optical system mixing the lights provided from the at least two input optical systems to provide a hologram image, and a spatial light modulating module modulating the light.Type: GrantFiled: September 13, 2012Date of Patent: March 31, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Byung Gyu Chae, Joonku Hahn, Hwi Kim
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Publication number: 20150085331Abstract: A holographic display apparatus is provided. The holographic display apparatus may include an input optical unit to illuminate coherent parallel light to a spatial light modulator (SLM), the SLM to generate a plurality of hologram-modulated diffraction beams by illuminating the coherent parallel light in a plurality of directions, or to generate hologram-modulated higher-order diffraction beams by illuminating the coherent parallel light in a single direction, and an optical imaging unit to reproduce at least one holographic three-dimensional (3D) image with different viewpoints on a single imaging area, using the generated at least one diffraction beam.Type: ApplicationFiled: March 17, 2014Publication date: March 26, 2015Applicant: Electronics and Telecommunications Research InstituteInventor: Byung Gyu CHAE
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Publication number: 20130208328Abstract: Holographic display apparatuses are provided. The holographic display apparatus may include a light source module generating coherent light, at least two input optical systems converging the light generated from the light source module on at least two converging points, an output optical system mixing the lights provided from the at least two input optical systems to provide a hologram image, and a spatial light modulating module modulating the light.Type: ApplicationFiled: September 13, 2012Publication date: August 15, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: Byung Gyu CHAE, Joonku Hahn, Hwi Kim
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Patent number: 8305221Abstract: Provided are an abrupt MIT device with variable MIT temperature or voltage, an MIT sensor using the abrupt MIT device, and an alarm apparatus and a secondary battery anti-explosion circuit including the MIT sensor. The MIT device includes an abrupt MIT layer undergoing an abrupt MIT at a transition temperature or a transition voltage and at least two electrode layers contacting the abrupt MIT layer. The transition temperature or the transition voltage varies with at least one of factors including a voltage applied to the electrode layers, a temperature, an electromagnetic wave, a pressure, and a gas concentration that affect the abrupt MIT layer. The MIT sensor is a temperature sensor, an infrared sensor, an image sensor, a pressure sensor, a gas-concentration sensor, or a switch. The alarm apparatus includes the MIT sensor and an alarm-signaling unit connected in series with the MIT sensor.Type: GrantFiled: May 30, 2007Date of Patent: November 6, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Hyun-Tak Kim, Bong-Jun Kim, Byung-Gyu Chae, Sun-Jin Yun, Sung-Youl Choi, Yong-Wook Lee, JungWook Lim, Sang-Kuk Choi, Kwang-Yong Kang
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Patent number: 8247806Abstract: Provided is a field effect transistor including a graphene channel layer, and capable of increasing an on/off ratio of an operating current by using the graphene of the graphene channel layer. The field effect transistor includes: a substrate; the graphene channel layer which is disposed on a portion of the substrate and includes graphene; a first electrode disposed on a first region of the graphene channel layer and a portion of the substrate; an interlayer disposed on a second region of the graphene channel layer, which is apart from the first region, and a portion of the substrate; a second electrode disposed on the interlayer; a gate insulation layer disposed on a portion of the graphene channel layer, the first electrode, and the second electrode; and a gate electrode disposed on a portion of the gate insulation layer.Type: GrantFiled: December 29, 2009Date of Patent: August 21, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Byung-Gyu Chae, Hyun Tak Kim
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Publication number: 20120019883Abstract: Provided is a holographic display that realizes a high-resolution three-dimensional (3D) image as a spatial light modulation panel system having a fast response time and enabling the formation of high-density pixels is developed. The holographic display includes, a spatial light modulator using a polymer thin film or a dielectric thin film that enable the formation of high-density pixels and has a fast response time, a fine displacement panel system sequentially moving the spatial light modulator in synchronization with a hologram fringe signal, and an optical system including a coherent light source, a spatial light modulation panel system, and an optical element that are efficiently disposed. The holographic display has a feature that realizes a high-resolution 3D image in a scheme that integrates and displays an image while sequentially moving a spatial light modulator simply or overlaps a hologram fringe pattern.Type: ApplicationFiled: July 25, 2011Publication date: January 26, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Byung Gyu CHAE, Seong Su Park, Seung Ho Ahn
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Publication number: 20110304403Abstract: Provided are an oscillatory circuit based on a metal-insulator transition (MIT) device that can generate a simple and very high oscillating frequency using the MIT device, and a method of driving the oscillatory circuit. The oscillatory circuit includes the MIT device that comprises an MIT thin film and an electrode thin film connected to the MIT thin film and in which an abrupt MIT is generated due to an MIT generating voltage, a resistor that is serially connected to the MIT device, an electrical power source limiting the maximum amount of an applied current and applying a direct current constant voltage to the MIT device, and a light source irradiating electromagnetic waves on the MIT device, wherein the oscillating properties are generated by irradiating the electromagnetic waves using the light source.Type: ApplicationFiled: August 2, 2011Publication date: December 15, 2011Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Yong-wook Lee, Bongjun Kim, Sungyoul Choi, Jungwook Lim, Sun-Jin Yun, Byung-Gyu Chae, Hyun-Tak Kim, Gyungock Kim
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Patent number: 8031022Abstract: Provided are an MIT device-based oscillation circuit including a power source, an MIT device and a variable resistor, in which a generation of an oscillation and an oscillation frequency are determined according to a voltage applied from the power source and a resistance of the variable resistor, and a method of adjusting the oscillation frequency of the oscillation circuit. The MIT device includes an MIT thin film and an electrode thin film connected to the MIT thin film, and generates a discontinuous MIT at an MIT generation voltage, the variable resistor is connected in series to the MIT device, and the power source applies a voltage or an electric current to the MIT device. The generation of an oscillation and an oscillation frequency are determined according to the voltage applied from the power source and the resistance of the variable resistor.Type: GrantFiled: March 5, 2008Date of Patent: October 4, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Yong-Wook Lee, Bong-Jun Kim, Hyun-Tak Kim, Sung-Youl Choi, Byung-Gyu Chae, Jung-Wook Lim, Sun-Jin Yun
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Patent number: 8031021Abstract: Provided are an oscillatory circuit based on a metal-insulator transition (MIT) device that can generate a simple and very high oscillating frequency using the MIT device, and a method of driving the oscillatory circuit. The oscillatory circuit includes the MIT device that comprises an MIT thin film and an electrode thin film connected to the MIT thin film and in which an abrupt MIT is generated due to an MIT generating voltage, a resistor that is serially connected to the MIT device, an electric al power source limiting the maximum amount of an applied current and applying a direct current constant voltage to the MIT device, and a light source irradiating electromagnetic waves on the MIT device, wherein the oscillating properties are generated by irradiating the electromagnetic waves using the light source.Type: GrantFiled: October 31, 2007Date of Patent: October 4, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Yong-Wook Lee, Bongjun Kim, Sungyoul Choi, Jungwook Lim, Sun-Jin Yun, Byung-Gyu Chae, Hyun-Tak Kim, Gyungock Kim
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Patent number: 8017268Abstract: Provided is a lithium secondary battery including a discharge unit capable of delaying or preventing a battery explosion. The lithium secondary battery includes a discharge unit disposed parallel to a battery body. The discharge unit includes a first electrode connected to a positive electrode of the battery body, a second electrode connected to a negative electrode of the battery body, and a discharge material film, disposed between the first electrode and the second electrode, inducing a abrupt discharge above a predetermined temperature. The discharge material film, e.g., a abrupt metal-insulator transition (MIT) material film can induce a abrupt discharge, thereby preventing or delaying a battery explosion.Type: GrantFiled: January 12, 2006Date of Patent: September 13, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Hyun-Tak Kim, Doo-Hyeb Youn, Byung-Gyu Chae, Kwang-Yong Kang, Bong-Jun Kim, Yong-Wook Lee, Sun-Jin Yun, Jung-Wook Lim, Gyung-Ock Kim, Sung-Lyul Maeng
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Patent number: 7989792Abstract: An abrupt MIT (metal-insulator transition) device with parallel MIT material layers is provided. The abrupt MIT device includes a first electrode disposed on a certain region of a substrate, a second electrode disposed so as to be spaced a predetermined distance apart from the first electrode, and at least one MIT material layer electrically connecting the first electrode with the second electrode and having a width that allows the entire region of the MIT material layer to be transformed into a metal layer due to an MIT. Due to this configuration, deterioration of the MIT material layer, which is typically caused by current flowing through the MIT material layer, is less likely to occur.Type: GrantFiled: January 31, 2007Date of Patent: August 2, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Hyun-Tak Kim, Byung-Gyu Chae, Kwang-Yong Kang, Bong-Jun Kim, Yong-Wook Lee, Sun-Jin Yun
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Patent number: 7944360Abstract: Provided are a temperature sensor using a metal-insulator transition (MIT) device subject to abrupt MIT at a specific temperature and an alarm including the temperature sensor. The abrupt MIT device includes an abrupt MIT thin film and at least two electrode thin films that contacts the abrupt MIT thin film. The abrupt MIT device generates abrupt metal-insulator transition at a specific transition temperature. The alarm includes a temperature sensor comprising an abrupt MIT device, and an alarm signaling device serially connected to the temperature sensor. Accordingly, the alarm can be manufactured to have a simple circuit and be of a small size by including the temperature sensor using an abrupt MIT device.Type: GrantFiled: June 27, 2006Date of Patent: May 17, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Hyun-Tak Kim, Kwang-Yong Kang, Yong-Wook Lee, Byung-Gyu Chae, Bong-Jun Kim, Sang-Kuk Choi, Sun-Jin Yun