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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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04-08-2016 дата публикации

VIDEO ENCODING APPARATUS AND METHOD

Номер: US20160227243A1
Автор: Seung-Hyun CHO, CHO SEUNG-HYUN, CHO Seung-Hyun
Принадлежит:

A video encoding apparatus and method is provided. The video encoding apparatus includes a processor configured to encode video data according to a program, and a memory configured to store the program. The program performs intra prediction on a block of the video data, determines whether an optimum prediction method according to the intra prediction is a block non-division method, performs inter prediction according to a block division method corresponding to a prediction mode group in which a prediction mode of the block according to the intra prediction is included when the optimum prediction method is the block non-division method, selects a method in which an error is smallest among the block division methods applied in the inter prediction as an optimum division method, performs encoding according to the optimum division method. 1. A video encoding apparatus , comprising:a processor configured to encode video data according to a program; anda memory configured to store the program,wherein the processor performs intra prediction on a block of the video data, determines whether an optimum prediction method according to the intra prediction is a block non-division method, performs inter prediction according to a block division method corresponding to a prediction mode group in which a prediction mode of the block according to the intra prediction is included when the optimum prediction method is the block non-division method, selects a method in which an error is smallest among the block division methods applied to the inter prediction as an optimum division method, and performs encoding according to the optimum division method.2. The video encoding apparatus of claim 1 , wherein the processor selects the block division method corresponding to the prediction mode group in which the prediction mode of the block according to the intra prediction is included as a candidate block division method when the optimum prediction method is not the block non-division method ...

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Номер записи: 1
01-03-2012 дата публикации

GETTER ASSEMBLY AND MANUFACTURING METHOD THEREOF

Номер: US20120049729A1
Автор: CHANG Dong-su, Cho Hyun-Seung, LEE Jae-Young
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A getter assembly which is mounted in a getter chamber is provided. The getter assembly comprises a plurality of getter, support units to support the plurality of getter. When the getter assembly is mounted the getter chamber, the support unit is elastically deformed to create a pressing force against the plurality of spacer, thereby the getter assembly maintain fixedly in the getter chamber. 1. A getter assembly for being mounted in a getter chamber in which a plurality of spacers are formed , the getter assembly comprising:a plurality of getters; anda support unit which supports the plurality of getters,wherein, when the getter assembly is mounted in the getter chamber, the support unit is elastically deformed to press against at least one of the plurality of spacers so the getter assembly is fixedly mounted.2. The getter assembly as claimed in claim 1 , wherein the support unit comprises:a coupling bar;a plurality of support bars attached to the coupling bar, wherein the plurality of getters are attached to the plurality of support bars3. The getter assembly as claimed in claim 2 , wherein the at least one of the plurality of spacers comprise:a first spacer and a second spacer adjacent to the first spacer; and a first elastic deformation part and a second elastic deformation part which are disposed at opposite ends of the support bar and are elastically deformed by being brought into contact with the first and the second spacers; and', 'a getter fixing part which is disposed between the first and the second elastic deformation parts and to which some of the plurality of getters are fixed., 'wherein each of the plurality of support bars comprises4. The getter assembly as claimed in claim 3 , wherein the first and the second elastic deformation parts are formed by bending the support bar.5. The getter assembly as claimed in claim 3 , wherein the first and the second elastic deformation parts are elastically deformed to press against the first and the second spacers ...

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Номер записи: 2
15-03-2012 дата публикации

METHOD OF FABRICATING ARRAY SUBSTRATE FOR ORGANIC ELECTROLUMINESCENT DEVICE AND METHOD OF REPAIRING THE SAME

Номер: US20120064641A1
Автор: CHO Seung-Hyun, LEE Jun-Ho, Yang Mi-Youn
Принадлежит:

A method of fabricating an organic electroluminescent device (OELD) according to the present invention has steps of repairing a pixel region by irradiating a laser on a drain contact hole of a passivation layer in a pixel region in need of the repair; and disabling the connection between an organic electroluminescent diode and a drain electrode of a driving thin film transistor (TFT), where the pixel region of the OELD has i) the driving TFT comprising the drain electrode, ii) the passivation layer covering the driving TFT, while comprising the drain contact hole exposing the drain electrode of the driving TFT, and iii) the organic electroluminescent diode connected to the drain electrode of the driving TFT via the drain contact hole. 2. The method of claim 1 , wherein the laser is irradiated through an image display surface of the OELD.3. The method of claim 1 , wherein the organic electroluminescent diode comprises a first electrode claim 1 , an organic luminescent layer on the first electrode claim 1 , and a second electrode on the organic luminescent layer claim 1 , wherein the first electrode is in contact with the drain electrode of the driving TFT.4. The method of claim 3 , wherein the first electrode is opaque claim 3 , the second electrode is transparent.5. The method of claim 4 , wherein the laser is irradiated onto the second electrode.6. The method of claim 1 , wherein the laser has a wavelength between about 500 nm and 550 nm claim 1 , and energy of about 0.3 to about 1.0 mJ.7. The method of claim 6 , wherein the wavelength is about 532 nm claim 6 , and the energy is about 0.5 to 0.8 mJ.8. The method of claim 1 , wherein when the OELD is on claim 1 , the driving TFT in the pixel region in need of the repair constantly turns on the organic luminescent diode regardless of a voltage supplied to the driving TFT.9. The method of claim 1 , wherein the disabling step results in a darkening point defect of the pixel region.10. The method of claim 1 , wherein ...

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Номер записи: 3
22-03-2012 дата публикации

METHOD FOR MANUFACTURING DYE-SENSITIZED SOLAR CELL

Номер: US20120070933A1
Автор: Cho Hyun-Seung, Jin Chang-Ho, Kim Gang-Beom
Принадлежит: TG ENERGY INC.

The present invention provides an intermediate structure for use in manufacturing a dye-sensitized solar cell (DSSC) and a method for manufacturing a DSSC with the intermediate structure. The intermediate structure comprises a first electrode coated with a nano-particle oxide and a second electrode laminated with the first electrode by a layer formed of a sealant. The sealant layer has openings in predetermined positions such that at least a portion of the internal space formed by the first electrode, the second electrode, and the sealant layer can communicate with the outside. With the intermediate structure, a superior quality of a DSSC can be manufactured in a simpler and more cost-effective way. 1. A method of manufacturing a dye-sensitized solar cell , comprising the steps of:fabricating a counter electrode;fabricating a pre-transparent electrode by coating a nano-particle oxide on a transparent conductive substrate and then sintering the nano-particle oxide;laminating and adhering the pre-transparent electrode and the counter electrode by a layer formed of a sealant, wherein the sealant layer has openings in predetermined positions such that at least a portion of the internal space defined by the pre-transparent electrode, the counter electrode, and the sealant layer communicates with the outside;adsorbing photosensitive dye molecules on the nano-particle oxide by injecting a photosensitive dye molecule solution through the openings; andinjecting an electrolyte through the openings and then closing the openings.2. The method according to claim 1 , wherein the sealant is one selected from a group consisting of a thermoplastic resin claim 1 , a thermosetting resin claim 1 , a photo-curable resin claim 1 , and a glass composition.3. The method according to claim 1 , wherein a metal grid is formed in the transparent conductive substrate claim 1 , and the openings are formed at both ends of each of grid patterns.4. The method according to claim 3 , wherein the ...

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Номер записи: 4
14-06-2012 дата публикации

ANGLED PHYSICAL CONTACT RECEPTABLE STUB AND ANGLED PHYSICAL CONTACT TRANSMITTER OPTICAL SUB-ASSEMBLY HAVING THE SAME

Номер: US20120148191A1
Автор: CHO Seung-Hyun, LEE Eun-Gu, Lee Han-Hyub, Lee Jie-Hyun, Lee Jong-Hoon, LEE Sang-Soo
Принадлежит: Electronics and Telecommunications Research Institute

An APC receptacle stub and an APC TOSA having the same are provided. The APC receptacle stub includes a first APC stub and a second APC stub. The first APC stub has an optical fiber inserted thereto and is provided with one end section polished in an APC shape. The second APC stub has an optical fiber inserted thereto and is provided with one end section polished in an APC shape and an opposite end section which is coupled to an opposite end section of the first APC stub through rotation adjustment in the same axial direction as an axial direction of the opposite end section of the first APC stub. The APC receptacle stub enables easy optical alignment and is applicable to a light source that is sensitive to reflection. 1. An Angled Physical Contact (APC) receptacle stub accommodated in a transmitter Optical Sub-Assembly (TOSA) , the APC receptacle stub comprising:a first APC stub which has an optical fiber inserted thereto and is provided with one end section polished in an APC shape; anda second APC stub which has an optical fiber inserted thereto and is provided with one end section polished in an APC shape and an opposite end section which is coupled to an opposite end section of the first APC stub through rotation adjustment in the same axial direction as an axial direction of the opposite end section of the first APC stub.2. The APC receptacle stub of claim 1 , wherein the opposite end section of the first APC stub coupled to the second APC stub is polished in a Physical Contact (PC) shape claim 1 , andthe opposite end section of the second APC stub coupled to the first APC stub is polished in a PC shape.3. The APC receptacle stub of claim 2 , wherein the opposite end section of the first APC stub polished in a PC shape is polished in a Ultra Physical Contact (UPC) claim 2 , andthe opposite end section of the second APC stub polished in a PC shape is polished in a UPC.4. An Angled Physical Contact (APC) transmitter Optical Sub-Assembly (TOSA) claim 2 , the APC ...

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Номер записи: 5
28-06-2012 дата публикации

APPARATUS AND METHOD FOR DRIVING WAVELENGTH-INDEPENDENT LIGHT SOURCE

Номер: US20120163822A1
Автор: CHO Seung-Hyun, JUNG Eui-Suk, LEE Eun-Gu, Lee Han-Hyub, Lee Jie-Hyun, Lee Jong-Hoon, LEE Sang-Soo
Принадлежит: Electronics and Telecommunications Research Institute

An apparatus for driving a wavelength-independent light source is provided. The apparatus includes a seed light signal generation unit configured to generate seed light signals with one or more wavelengths based on a wavelength identification signal, a wavelength light detection unit configured to detect the wavelength identification signal from the seed light signals, an extraction unit configured to extract wavelength information corresponding to the detected wavelength identification signal and extract a driving condition of a wavelength-independent light source corresponding to the extracted wavelength information, and a driving unit configured to drive the wavelength-independent light source according to the extracted driving condition. 1. An apparatus for driving a wavelength-independent light source , comprising:a seed light signal generation unit configured to generate seed light signals with one or more wavelengths based on a wavelength identification signal;a wavelength light detection unit configured to detect the wavelength identification signal from the seed light signals;an extraction unit configured to extract wavelength information corresponding to the detected wavelength identification signal and extract a driving condition of a wavelength-independent light source corresponding to the extracted wavelength information; anda driving unit configured to drive the wavelength-independent light source according to the extracted driving condition.2. The apparatus of claim 1 , further comprising:a wavelength identification signal generation unit configured to generate the wavelength identification signal.3. The apparatus of claim 1 , further comprising:a multiplexing unit configured to generate a multiplexed signal by multiplexing the seed light signals.4. The apparatus of claim 3 , further comprising:a demultiplexing unit configured to demultiplex the multiplexed signal.5. The apparatus of claim 1 , wherein the wavelength identification signal comprises a ...

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Номер записи: 6
30-08-2012 дата публикации

METHOD AND APPARATUS FOR PRODUCTION OF DSSC

Номер: US20120220074A1
Автор: Cho Hyun-Seung, Eum Jeong-Yong, Hwang Jung Min, Kim Gang-Beom, KIM Jong Min, Park Chun-Seong
Принадлежит:

An apparatus and method for producing a dye-sensitized cell are provided, in which a pre-transparent electrode and an opposite electrode are partially bonded, dye molecules are applied to the bonded electrodes followed by washing, an electrolyte is injected, and then the electrodes are hermetically sealed. With the apparatus and method, the manufacturing cost can be reduced and the manufacturing process can be simplified. 1. A method for producing a dye-sensitized solar cell which includes a transparent electrode , an opposite electrode which is opposite to the transparent electrode , and an electrolyte layer between the two electrodes , the method comprising:(a) providing a pre-transparent electrode by coating oxide nanoparticles on a transparent conductive substrate and sintering the resulting transparent conductive substrate;(b) providing an opposite electrode by coating a transparent conductive substrate with platinum or carbon;(c) laminating the pre-transparent electrode and the opposite electrode such that the two electrodes are spaced apart by a predetermined interval from each other and the coated oxide nanoparticles and the coated platinum or carbon are positioned between the two electrodes, and then bonding the two electrodes at one or more predetermined portions such that the space between the two electrodes is in fluid communication with the outside;(d) supplying photosensitive dye molecules to the space between the two electrodes such that the photosensitive dye molecules are adsorbed onto the oxide nanoparticles;(e) supplying an electrolyte into the space between the two electrodes; and(f) hermetically sealing the electrodes.2. The method according to claim 1 , wherein in step (c) claim 1 , the bonded portion or portions have at least one first opening therein and at least one second opening therein claim 1 , through which the space between the two electrodes is in fluid communication with the outside.3. The method according to claim 2 , wherein at ...

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Номер записи: 7
13-06-2013 дата публикации

MAGNETOSTRICTIVE PHASED ARRAY TRANSDUCER FOR TRANSDUCING SHEAR HORIZONTAL BULKWAVES

Номер: US20130145851A1
Автор: Ahn Bong Young, CHO Seung Hyun, Heo Tae Hoon
Принадлежит: Korea Research Institute of Standards and Science

A magnetostrictive phased array transducer for transducing shear horizontal bulkwaves including a plurality of magnetostrictive members each having a bottom surface of a plate-shaped structure made of a ferromagnetic material, which is mounted to be adhered closely to the surface of a mounting place; an insulator disposed on a side surface of each magnetostrictive member; a meander coil having a plurality of coil lines extended in the direction parallel with the bottom surface on each insulator, wherein adjacent coil lines are connected so that current flows in the opposite directions to each other, thereby generating a dynamic magnetic field with respect to each magnetostrictive member; and a magnet mounted to generate a static magnetic field perpendicular to the dynamic magnetic field. When the current is supplied to the meander coil, a plurality of magnetostrictive members generate a plurality of shear horizontal bulkwaves while being deformed by the magnetostriction effect. 1. A magnetostrictive phased array transducer for transducing shear horizontal bulkwaves , comprising:a plurality of magnetostrictive members each having a bottom surface of a plate-shaped structure made of a ferromagnetic material, which is mounted to be adhered closely to the surface of a mounting place;an insulator disposed on a side surface of each magnetostrictive member;a meander coil having a plurality of coil lines extended in the direction parallel with the bottom surface on each insulator, wherein adjacent coil lines are connected so that current flows in the opposite directions to each other, thereby generating a dynamic magnetic field with respect to each magnetostrictive member; anda magnet mounted to generate a static magnetic field perpendicular to the dynamic magnetic field,wherein, when the current is supplied to the meander coil, a plurality of magnetostrictive members generate a plurality of shear horizontal bulkwaves while being deformed by the magnetostriction effect.2. A ...

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Номер записи: 8
27-06-2013 дата публикации

USER-SELECTABLE LASER AND OPTICAL TRANSMITTER HAVING THE SAME

Номер: US20130163629A1
Автор: CHO Seung-Hyun, JUNG Eui-Suk, KIM Kwang-Ok, Lee Jie-Hyun, LEE Sang-Soo, MYONG Seung-Il
Принадлежит: Electronics and Telecommunications Research Institute

Provided are a user-selectable laser and an optical transmitter including the same. The user-selectable laser is an external cavity laser including a semiconductor laser diode for outputting an optical signal, and a wavelength selection filter. The user-selectable laser may allow a user to select a wavelength selection filter which is optically coupled with the semiconductor laser diode and selectively causes oscillation at the wavelength of an optical signal output from the semiconductor laser diode. 1. A user-selectable laser comprising:a semiconductor laser diode configured to output an optical signal;a wavelength selection filter configured to be optically coupled with the semiconductor laser diode, and to select an oscillation wavelength of the optical signal output from the semiconductor laser diode,wherein the wavelength selection filter is selected by a user.2. The user-selectable laser of claim 1 , wherein a wavelength selection filter having optical output characteristics for optical signal oscillation in an oscillation mode corresponding to a predetermined wavelength allocated for optical transmission is selected by the user claim 1 , andthe selected wavelength selection filter is removable attached to a package of the user-selectable laser by the user.3. The user-selectable laser of claim 2 , wherein the wavelength selection filter has an integrated structure including a multilayer thin-film coated layer claim 2 , a glass block claim 2 , and an anti-reflection coated layer such that the wavelength selection filter reflects only a predetermined wavelength band.4. The user-selectable laser of claim 2 , wherein the wavelength selection filter has a split structure including a band-transmission thin-film coated layer claim 2 , a glass block claim 2 , and a partial-reflection coated layer.5. The user-selectable laser of claim 2 , wherein the wavelength selection filter is inserted into a Transmitter Optical Sub Assembly (TOSA) through a wavelength selection ...

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Номер записи: 9
04-07-2013 дата публикации

SIGNAL TRANSMISSION APPARATUS AND OPTICAL MODEM MODULATION METHOD

Номер: US20130170830A1
Автор: CHO Seung Hyun, JUNG Eui Suk, KIM Kwang Ok, LEE Jie Hyun, LEE Jong Hyun, Lee Sang Soo, MYONG Seung Il
Принадлежит: Electronics and Telecommunications Research Institute

A modulation method of an optical modem and a signal transmission apparatus performing the method are disclosed. The modulation method of the optical modem includes an optical interface providing a signal to a light source, a photo detector receiving reflected light by an optical link when output light from the light source based on the provided signal is reflected by the optical link, the photo detector measuring and determining characteristics of the optical link using the reflected light, and the optical modem determining a power level and a modulation method for each subcarrier based on the characteristics of the optical link. 1. A modulation method for an optical modem comprising:providing, by an optical interface, a signal to a light source;receiving, by a photo detector, light reflected by an optical link when light output from the light source based on the provided input signal is reflected by the optical link;determining, by the photo detector, an characteristic of the optical link using the reflected light; anddetermining, by the optical modem, a power level and a modulation method for each subcarrier based on the determined characteristic of the optical link.2. The modulation method of claim 1 , wherein the determining of the characteristic for the optical link determines claim 1 , using the light reflected by the optical link claim 1 , a length of an optical fiber through which the output light is transmitted or a number of splits of an optical splitter.3. The modulation method of claim 2 , wherein the determining of the power level and the modulation method for the subcarrier selects a power level and a modulation method for the each subcarrier corresponding to the length of the optical fiber and the number of splits of the optical splitter claim 2 , based on a pre-defined look-up table.4. The modulation method of claim 1 , wherein an optical path of the light reflected by the optical link is changed by the optical splitter so that the light reflected ...

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Номер записи: 10
04-07-2013 дата публикации

HYBRID PASSIVE OPTICAL NETWORK SYSTEM

Номер: US20130170834A1
Автор: CHO Seung-Hyun, JUNG Eui Suk, KIM Kwang Ok, LEE Jie Hyun, LEE Jong Hyun, Lee Sang Soo, MYONG Seung Il
Принадлежит: Electronics and Telecommunications Research Institute

Provided is a hybrid passive optical network (PON) system. The hybrid PON system of wavelength division multiplexing (WDM)/time division multiplexing (TDM) may include an optical line terminal (OLT) and an optical network unit (ONU). The OLT and the ONU may transmit a signal based on wavelength reuse using a seed light source and a reflective modulator. The light source may include a seed light source having a single wavelength, two seed light sources having different wavelength bands, and a light source having a wavelength tunable characteristic. 1. An optical line terminal (OLT) of a hybrid passive optical network (PON) system , the OLT comprising:a seed light source configured to provide a seed light having a predetermined wavelength;an optical transmitter configured to modulate the seed light generated from the seed light source using a reflective modulator, and to transmit a modulated orthogonal frequency division multiplexing (OFDM) downstream optical signal to at least one optical network unit (ONU); andan optical receiver configured to receive an OFDM upstream optical signal from the at least one ONU,wherein the at least one ONU is configured to obtain a wavelength of the OFDM upstream optical signal from the OFDM downstream optical signal and to reuse a portion of the OFDM downstream optical signal as an OFDM upstream optical signal.2. The OLT of claim 1 , wherein the seed light source is supplied in array type by allocating claim 1 , per wavelength claim 1 , a single longitudinal mode operated laser (SML) including at least one of a distributed feedback laser diode (DFB-LD) claim 1 , a distributed Bragg reflector (DBR) laser claim 1 , an external cavity laser (ECL) claim 1 , and a vertical cavity surface emitting laser (VCSEL).3. The OLT of claim 1 , wherein the seed light source is supplied by spectrum-slicing a broadband light source from any one of an erbium doped fiber amplifier (EDFA) claim 1 , a semiconductor optical amplifier (SOA) claim 1 , and a ...

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Номер записи: 11
04-07-2013 дата публикации

OPTICAL TRANSCEIVER AND WAVELENGTH INITIALIZATION METHOD USING OPTICAL TRANSCEIVER

Номер: US20130170836A1
Автор: CHO Seung Hyun, JUNG Eui Suk, KIM Kwang Ok, LEE Eun Gu, LEE Han Hyub, LEE Jie Hyun, LEE Jong Hyun, Lee Sang Soo, MYOUNG Seung Il
Принадлежит: Electronics and Telecommunications Research Institute

An optical transceiver, and a wavelength initialization method using the optical transceiver are provided. The optical transceiver may include an optical transmitter to transmit an upstream signal using a first waveguide Bragg grating (WBG), an optical receiver to receive a downstream signal using a second WBG, and a control unit to control the second WBG to initialize a wavelength, so that the optical receiver receives a maximum optical power. 1. An optical transceiver , comprising:an optical receiver to receive a downstream signal using a first wavelength selective filter comprising a first waveguide Bragg grating (WBG);a control unit to control the first WBG to initialize a wavelength, so that the optical receiver receives a maximum optical power; andan optical transmitter to transmit an upstream signal using a second wavelength selective filter comprising a second WBG,wherein the second WBG is controlled by the control unit, together with the first WBG.2. The optical transceiver of claim 1 , wherein the first WBG and the second WBG is separated from a gain medium or is unified with the gain medium.3. The optical transceiver of claim 1 , wherein a central Bragg wavelength of the first WBG and a central Bragg wavelength of the second WBG are set to be spaced apart from each other by a free spectral range (FSR) of a wavelength division multiplexer/demultiplexer (WDM MUX/DeMUX).4. The optical transceiver of claim 1 , wherein the upstream signal and the downstream signal are located in wavelength bands that are spaced apart from each other by an integer multiple of an FSR of a WDM MUX/DeMUX.5. An optical transceiver claim 1 , comprising:an optical receiver to receive a downstream signal using a first wavelength selective filter;a control unit to control the first wavelength selective filter to initialize a wavelength, so that the optical receiver receives a maximum optical power; andan optical transmitter to transmit an upstream signal using a second wavelength ...

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Номер записи: 12
04-07-2013 дата публикации

Converged pon for tdma-pon service based on ofdma-pon

Номер: US20130170837A1
Автор: Jie Hyun Lee, Jong Hyun Lee, Kwang Ok Kim, Sang Soo Lee, Seung Il Myong, Seung-Hyun Cho
Принадлежит: Electronics and Telecommunications Research Institute ETRI

A converged passive optical network (CPON) and a data transmission method are disclosed. The CPON is a combination of a time division multiple access-passive optical network (TDMA-PON) and an orthogonal frequency division multiple access-passive optical network (OFDMA-PON) and is able to dynamically controlling a bandwidth for upstream signal transmission through allocation of multiple subcarriers to each single optical network unit (ONU).

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Номер записи: 13
29-08-2013 дата публикации

DISPLAY PANEL AND DISPLAY APPARATUS USING BIREFRINGENCE

Номер: US20130222366A1
Автор: Cho Hyun-Seung, Kang Ki-hyung
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A display panel and a display apparatus are provided. The display panel includes an image panel having pixel lines; a polarization panel which switches a polarization direction of a ray of light emitted from the image panel; and a lens which passes the ray of light provided from the polarization panel. The lens includes a first lens array which has a first birefringence characteristic, a second lens array which has a second birefringence characteristic different from the first birefringence characteristic, and which is arranged at a location to face the first lens array in an alternating manner, and a liquid crystal portion which has a same birefringence characteristic as either the first birefringence characteristic or the second birefringence characteristic, and which is filled in between the first lens array and the second lens array. 1. A display panel comprising:an image panel which comprises a plurality of pixel lines;a polarization panel which switches a polarization direction of a ray of light emitted from the image panel; and a first lens array which has a first birefringence characteristic,', 'a second lens array which has a second birefringence characteristic different from the first birefringence characteristic, and which is arranged at a location to face the first lens array in an alternating manner, and', 'a liquid crystal portion which has a birefringence characteristic that is the same as either the first birefringence characteristic or the second birefringence characteristic, and which is filled in between the first lens array and the second lens array., 'a lens which passes the ray of light provided from the polarization panel, the lens comprising2. The display panel of claim 1 , wherein the first lens array passes a ray of light having a first polarization direction claim 1 , and refracts a ray of light having a second polarization direction perpendicular to the first polarization direction claim 1 , andthe second lens array passes the ray of ...

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Номер записи: 14
02-01-2014 дата публикации

EXTERNAL CAVITY LASER USING MULTILAYERED THIN FILM FILTER AND OPTICAL TRANSMITTER HAVING THE SAME

Номер: US20140003818A1
Автор: CHO Seung Hyun, LEE Jie Hyun, Lee Sang Soo, MYONG Seung Il
Принадлежит:

Provided is an external cavity laser using a multilayered thin film filter and an optical transmitter having the same. The external cavity laser may include a semiconductor laser diode to output an optical signal, a lens to cause the optical signal output from the semiconductor laser diode to converge, a multilayered thin film filter to receive the optical signal passed through the lens and to pass the optical signal in a bandpass wavelength range, and a partial reflector to transmit the optical signal transmitted through the multilayered thin film filter to an optical fiber. 1. An external cavity laser comprising:a semiconductor laser diode to output an optical signal;a lens to cause the optical signal output from the semiconductor laser diode to converge;a multilayered thin film filter to receive the optical signal passed through the lens and to pass the optical signal in a bandpass wavelength range; anda partial reflector to transmit the optical signal transmitted through the multilayered thin film filter to an optical fiber.2. The external cavity laser of claim 1 , wherein the multilayered thin film filter is coupled to the partial reflector.3. The external cavity laser of claim 1 , wherein the multilayered thin film filter is disposed a first predetermined distance away from the partial reflector.4. The external cavity laser of claim 1 , wherein the lens is coupled to the multilayered thin film filter.5. The external cavity laser of claim 1 , wherein the lens is disposed a second predetermined distance away from the multilayered thin film filter.6. The external cavity laser of claim 1 , wherein the multilayered thin film filter has a front surface to which an anti-reflection (AR) coating is applied claim 1 , and a rear surface to which a multilayer thin-film coating is applied claim 1 , andthe AR coating is applied to one surface of the front surface and the rear surface of the multilayered thin film filter.7. The external cavity laser of claim 1 , wherein the ...

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Номер записи: 15
02-01-2014 дата публикации

CLOUD BASE STATION IN FIXED-MOBILE CONVERGED ACCESS NETWORK AND OPERATION METHOD THEREOF

Номер: US20140003819A1
Автор: CHO Seung Hyun, DOO Kyeong Hwan, LEE Jie Hyun, LEE Jong Hyun, Lee Sang Soo, MYONG Seung Il
Принадлежит: Electronics and Telecommunications Research Institute

Disclosed is a cloud base station in an orthogonal frequency division multiplexing (OFDM)-based fixed-mobile converged access network and an operation method thereof. The cloud base station may include a physical (PHY) layer unit to perform a quadrature amplitude modulation (QAM) of a parallel signal received from a media access control (MAC) layer per subcarrier, and an optical orthogonal frequency division multiplexing (OFDM) transceiver to transform the QAM modulated subcarriers into a time domain to generate an OFDM sample per subcarrier, add a cyclic prefix (CP) and control information to for operating an enhanced radio unit (eRU) to the OFDM sample per subcarrier to generate a downstream signal, and transmit the downstream signal. 1. A cloud radio base station comprising:a physical (PHY) layer unit to perform a quadrature amplitude modulation (QAM) of a parallel signal received from a media access control (MAC) layer per subcarrier; andan optical orthogonal frequency division multiplexing (OFDM) transceiver to transform the QAM modulated subcarriers into a time domain to generate an OFDM sample per subcarrier, add a cyclic prefix (CP) and control information for operating an enhanced radio unit (eRU) to the OFDM sample per subcarrier to generate a downstream signal, and transmit the downstream signal.2. The cloud radio base station of claim 1 , wherein the PHY layer comprises:a QAM modulator to perform a QAM modulation of the parallel signal using a modulation scheme per subcarrier based on information received from the MAC layer; anda symbol adder to add training symbols for symbol synchronization and channel estimation to the QAM modulated subcarriers, and transmit the QAM modulated subcarriers with the added training symbols to the optical OFDM transceiver.3. The cloud radio base station of claim 1 , wherein the optical OFDM transceiver comprises:an inverse fast Fourier transform (IFFT) processor to perform an IFFT on the QAM modulated subcarriers of a ...

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Номер записи: 16
13-02-2014 дата публикации

OPTICAL TRANSMITTER AND OPTICAL TRANSCEIVER COMPRISING OPTICAL TRANSMITTER

Номер: US20140044436A1
Автор: CHO Seung Hyun, DOO Kyeong Hwan, LEE Jie Hyun, MYONG Seung Il
Принадлежит: Electronics and Telecommunications Research Institute

An optical transmitter and an optical transceiver including the same are provided. The optical transmitter may include a semiconductor laser diode to output optical signals, a multilayer thin film filter to receive the optical signals and pass optical signals corresponding to a transmission wavelength band, and a concave lens to collect the optical signals passed through the multilayer thin film filter. 1. An optical transmitter comprising:a semiconductor laser diode to output optical signals;a multilayer thin film filter to receive the optical signals and pass optical signals corresponding to a transmission wavelength band; anda concave lens to collect the optical signals passed through the multilayer thin film filter.2. The optical transmitter of claim 1 , wherein the concave lens is a partial coated lens comprising any of a coated concavo-convex lens claim 1 , a coated convex-concavo lens claim 1 , a coated convex-concavo lens claim 1 , and a combination of a plano-concavo lens and double convex lens.3. The optical transmitter of claim 1 , whereinthe concave lens is disposed apart from the multilayer thin film filter, andthe multilayer thin film filter is disposed apart from the semiconductor laser diode.4. An optical transceiver comprising:an optical transmitter configured such that optical signals output from a semiconductor laser diode pass through a multilayer thin film filter and configured to include a concave lens to collect the optical signals passed through the multilayer thin film filter;a beam splitter to separate the optical signals output from the optical transmitter and the optical signals input to the optical receiver from each other; and an optical receiver to receive optical signals input to the optical transceiver.5. The optical transceiver of claim 4 , wherein the optical transceiver further comprises:an isolator to prevent the optical signals output from the optical transmitter from being partially reflected and incident again to the optical ...

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Номер записи: 17
07-01-2021 дата публикации

Apparatus and method for processing user information of smart automated machine using face recognition

Номер: US20210004781A1
Автор: Sang Hyuk SO, Seung Hyun Cho
Принадлежит: Atec Ap Co Ltd

Disclosed are an apparatus and a method for processing user information of a smart automated machine using face recognition, which can guide video counseling through user recognition using face recognition technique in a smart automated machine, accurately detect departure and change of a user, and control the logout based on information of departure and change of the user, thereby protecting personal information and improving security. When a transaction starts in a task control unit, face recognition monitoring is requested by interworking with a user departure/change determination unit, a face recognition solution is executed as the face recognition monitoring is requested, a user departure/change detection event is generated and transmitted to the task control unit when departure/change of the user is detected, and the logout is selectively controlled according to the departure or change to protect personal information, thereby enhancing security.

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Номер записи: 18
27-01-2022 дата публикации

INTRA PREDICTION METHOD AND DEVICE

Номер: US20220030227A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

The present invention relates to an intra prediction method and apparatus. The image decoding method according to the present invention may comprise decoding information on intra prediction; and generating a prediction block by performing intra prediction for a current block based on the information on intra prediction. The information on intra prediction may include information on an intra prediction mode, and the intra prediction mode may include a curved intra prediction mode. 1. An image decoding method performed by an image decoding apparatus , the method comprising:determining whether a secondary inverse-transform is applied to a current block;performing the secondary inverse-transform on the current block in response to that the secondary inverse-transform is determined to be applied to the current block;performing a primary inverse-transform on the secondary inverse-transformed current block; andreconstructing the current block based on the primary inverse-transformed current block,wherein, the primary inverse-transform is a separable 2-D inverse-transform and the secondary inverse-transform is a non-separable 2-D inverse-transform.2. The image decoding method of claim 1 ,wherein, in case that a prediction mode of the current block is not an intra prediction mode, the secondary inverse-transform is not applied to the current block.3. The image decoding method of claim 1 ,wherein whether the secondary inverse-transform is applied to the current block is determined based on at least one of a color component of the current block, a size of the current block, and secondary transform information reconstructed from a bitstream.4. The image decoding method of further comprises:determining a transform candidate for the secondary inverse-transform in response to that the secondary inverse-transform is determined to be applied to the current block;wherein,the secondary inverse-transform is performed on the current block based on the determined transform candidate, ...

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Номер записи: 19
03-02-2022 дата публикации

IMAGE ENCODING/DECODING METHOD, APPARATUS, AND RECORDING MEDIUM FOR STORING BITSTREAM

Номер: US20220038692A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise constructing N MPM lists for a current block, wherein N is equal to or greater than 1, deriving an intra prediction mode of the current block based on the N MPM lists, and performing intra prediction for the current block based on the intra prediction mode. 1. An image decoding method performed by an image decoding apparatus , the method comprising:deciding whether an intra prediction mode of a current block is identical to an intra prediction mode included in a first MPM (Most Probable Mode) list;determining the intra prediction mode of the current block using the intra prediction mode included in the first MPM list in case the intra prediction mode of the current block is determined to be identical to the intra prediction mode included in the first MPM list;determining the intra prediction mode of the current block using an intra prediction mode included in a second MPM list for the current block in case the intra prediction mode of the current block is determined to be not identical to the intra prediction mode included in the first MPM list;generating a prediction block of the current block based on the determined intra prediction mode of the current block; andgenerating a reconstructed block of the current block by using the prediction block of the current block,wherein the second MPM list is configured based on an intra prediction mode of a left block adjacent to the current block and an intra prediction mode of an upper block adjacent to the current block,wherein the second MPM list comprises the intra prediction mode of the left block and the intra prediction mode of the upper block and two or more additional MPM candidates, andwherein the two or more additional MPM candidates are derived based on the intra prediction mode of the left block and the intra prediction mode of the upper block in response to ...

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Номер записи: 20
16-01-2020 дата публикации

METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE AND RECORDING MEDIUM STORING BIT STREAM

Номер: US20200021804A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

An image encoding/decoding method and apparatus are provided. An image decoding method of the present invention comprises decoding first information indicating whether a maximum of N intra prediction modes are used or a maximum of M intra prediction modes are used for an intra prediction for a current block, in which the M is smaller than the N, deriving an intra prediction mode of the current block, inverse-mapping the derived intra prediction mode on a corresponding intra prediction mode among the maximum N intra prediction modes when the decoded first information indicates that the maximum M intra prediction modes are used for the intra prediction for the current block, and generating an intra prediction block by performing an intra prediction for the current block, based on the inverse-mapped intra prediction mode. 1. An image decoding method comprising the steps of:decoding first information indicating whether a maximum of N intra prediction modes are used or a maximum of M intra prediction modes are used for an intra prediction for a current block, in which the M is smaller than the N;deriving an intra prediction mode of the current block;inverse-mapping the derived intra prediction mode on a corresponding intra prediction mode among the maximum N intra prediction modes when the decoded first information indicates that the maximum M intra prediction modes are used for the intra prediction for the current block; andgenerating an intra prediction block by performing an intra prediction for the current block, based on the inverse-mapped intra prediction mode.2. The image decoding method according to claim 1 , wherein when the decoded first information indicates that the maximum M intra prediction modes are used for an intra prediction of the current block claim 1 , the step of deriving the intra prediction mode of the current block claim 1 , comprises:mapping an intra prediction mode of at least one neighbor block of the current block on a corresponding intra ...

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Номер записи: 21
16-01-2020 дата публикации

Image encoding/decoding method, apparatus, and recording medium for storing bitstream

Номер: US20200021805A1
Автор: Dong San Jun, Ha Hyun Lee, Hui Yong Kim, Hyun Suk Ko, Jin Ho Lee, Jin Soo Choi, Jung Won Kang, Seung Hyun Cho, Sung Chang Lim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise constructing N MPM lists for a current block, wherein N is equal to or greater than 1, deriving an intra prediction mode of the current block based on the N MPM lists, and performing intra prediction for the current block based on the intra prediction mode.

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Номер записи: 22
16-01-2020 дата публикации

IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM IN WHICH BITSTREAM IS STORED

Номер: US20200021828A1
Автор: CHO Seung Hyun, Choi Jin Soo, JEON Byeung Woo, JEON Seung Su, JUN Dong San, Kang Jung Won, Kim Hui Yong, KIM Nam Uk, KO Hyun Suk, Lee Ha Hyun, LEE Jin Ho mes, Lim Sung Chang
Принадлежит:

The present invention relates to an image encoding/decoding method and device. The image decoding method according to the present invention comprises the steps of: decoding a prediction mode index; determining whether the prediction mode index indicates function-based intra prediction; inducing a parameter (s) for generating a function, when the prediction mode index indicates the function-based intra prediction; generating the function on the basis of the induced parameter (s); and performing intra prediction by using the generated function. 1decoding a prediction mode index;determining whether or not the prediction mode index indicates function-based intra-prediction;when the prediction mode index indicates function-based intra-prediction,deriving a parameter for generating a function;generating the function on the basis of the derived parameter; andperforming intra-prediction by using the generated function.. A method of decoding an image, the method comprising: The present invention relates to a method and device for image encoding/decoding, and a recording medium storing a bitstream. More particularly, the present invention relates to a method and device for image encoding/decoding which performs intra-prediction using a function, and a recording medium storing a bitstream generated by the image encoding method or device of the present invention.Recently, demands for high-resolution and high-quality images, such as high-definition (HD) and ultrahigh-definition (UHD) images, have increased in various fields of application. As image data has higher resolution and higher quality, the amount of data increases relative to existing image data. Accordingly, when image data is transmitted using media such as existing wired and wireless broad band lines or is stored in existing storage media, transmission cost and storage cost increase. In order to solve these problems occurring with an increase in resolution and quality of video data, high-efficiency image encoding/ ...

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Номер записи: 23
23-01-2020 дата публикации

IMAGE ENCODING/DECODING METHOD AND APPARATUS AND RECORDING MEDIUM FOR STORING BITSTREAM

Номер: US20200029071A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

The present invention relates to an image encoding method and an image decoding method. The image decoding method includes partitioning a picture into a plurality of coding units, constructing a coding unit group including at least one coding unit of the plurality of coding units, obtaining coding information in units of one coding unit group, and decoding at least one coding unit of the plurality of coding units included in the coding unit group by using the obtained coding information. 1. A method for decoding an image , the method comprising:dividing a picture into a plurality of coding units;constructing a coding unit group including at least one coding unit of the plurality of coding units;obtaining coding information in units of one coding unit group; anddecoding at least one coding unit of the plurality of coding units included in the coding unit group by using the obtained coding information.21. The method according to , wherein the dividing a picture into a plurality of coding units comprises dividing the picture into the plurality of coding units by using at least one of a quad-tree partitioning scheme and a binary-tree partitioning scheme ,wherein the coding units correspond to leaf nodes in at least one of a quad-tree structure and a binary-tree structure.3. The method according to claim 1 , wherein the coding information that is obtained in the units of one coding unit group is information required for at least one of a prediction method claim 1 , intra-picture prediction claim 1 , inter-picture prediction claim 1 , primary transform claim 1 , secondary transform claim 1 , dequantization claim 1 , and in-loop filtering.4. The method according to claim 1 , wherein a size of the coding unit is expressed as at least one of a block size claim 1 , the number of samples of a luma signal or a chroma signal claim 1 , and a partition depth claim 1 , and a largest size or a smallest size of the coding group unit is signaled as a slice header.5. The method ...

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Номер записи: 24
23-01-2020 дата публикации

BLOCK FORM-BASED PREDICTION METHOD AND DEVICE

Номер: US20200029077A1
Автор: BACK A-Ram, CHO Seung-Hyun, Choi Hae-Chul, GWON Dae-Hyeok, JUN Dong-San, Kang Jung-Won, KIM Hui-Yong, Kim Jae-Gon, KO Hyunsuk, LEE Ha-Hyun, Lee Jin-Ho, LIM Sung-Chang
Принадлежит:

Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used. 120-. (canceled)21. A video decoding method , comprising:determining whether to perform a splitting for a target block;generating a split block by split the target block in a case that it is determined to perform the splitting; andperforming decoding for the split block;22. The video decoding method of claim 21 , wherein:it is determined based on as shape of the target block whether to perform the splitting.23. The video decoding method of claim 21 , wherein:it is determined based on a depth of the target block whether to perform the splitting.24. The video decoding method of claim 21 , wherein:a shape of the splitting is determined based on a horizontal length of the target block and a vertical length of the target block.25. The video decoding method of claim 21 , wherein:the splitting is determined based on a block split indicator.26. The video decoding method of claim 25 , wherein:the block split indicator indicates a type of the splitting.27. The video decoding method of claim 25 , wherein:the splitting is determined based on a condition using information related to the target block in a case that the block split indicator is not signaled via a bitstream.28. The video decoding method of claim 21 , wherein:prediction is performed for a plurality of regions of the target block using a plurality of candidates in one list which ...

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Номер записи: 25
28-01-2021 дата публикации

IMAGE ENCODING/DECODING IMAGE METHOD AND DEVICE, AND RECORDING MEDIUM STORING BIT STREAM

Номер: US20210029349A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, Kim Tae Hyun, KO Hyun Suk, Lee Dae Young, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang, Park Gwang Hoon
Принадлежит:

An image encoding/decoding method and apparatus are provided. An image encoding method performed by an image encoding apparatus may comprise determining an intra-prediction mode of a current block, configuring a reference sample of intra prediction by using at least one of a neighbor pixel of the current block in a current picture and a pixel of a reference picture, and performing intra prediction for the current block based on the intra-prediction mode and the reference sample. 1. An image encoding method performed by an image encoding apparatus , the method comprising:generating a geometric transform matrix based on geometric transform information;determining a reference block from a reference picture that is geometrically modified by the geometric transform matrix; andpredicting a current block by referring to the reference block,wherein,the geometric transform information comprises at least one of transfer modification information, size modification information and rotation modification information and is defined based on a geometric modification relation between a current picture and the reference picture, andthe generating the geometric transform matrix comprises:when the geometric transform information comprises the transfer modification information, determining movement factors for the geometric transform matrix based on the transfer modification information, andwhen the geometric transform information comprises the size modification information and the rotation modification information, determining zooming and rotation factors for the geometric transform matrix based on the size modification information and the rotation modification information.2. An image decoding method performed by an image decoding apparatus , the method comprising:generating a geometric transform matrix based on geometric transform information;determining a reference block of from a reference picture that is geometrically modified by the geometric transform matrix; andpredicting a ...

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Номер записи: 26
17-02-2022 дата публикации

IMAGE ENCODING/DECODING METHOD AND RECORDING MEDIUM FOR SAME

Номер: US20220053197A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

The present invention relates to a method of performing motion compensation by using motion vector prediction. To this end, a method of decoding an image may include: generating multiple motion vector candidate lists according to an inter-prediction direction of a current block; deriving multiple motion vectors for the current block by using the multiple motion vector candidate lists; determining multiple prediction blocks for the current block by using the multiple motion vectors; and obtaining a final prediction block for the current block based on the multiple prediction blocks. 1. A method of decoding an image , the method comprising:deriving multiple motion vectors for a current block according to an inter-prediction direction of the current block;determining multiple prediction blocks for the current block by using the multiple motion vectors; andobtaining a final prediction block for the current block based on a weighted sum of the multiple prediction blocks,wherein weight of the current block for the weighted sum is derived from weight index information of the current block specifying any one of weights included in a predefined weight set,wherein the weight index information of the current block is derived based on weight index information of a neighboring block of the current block.2. A method of encoding an image , the method comprising:determining multiple prediction blocks for the current block; anddetermining a final prediction block for the current block based on a weighted sum of the multiple prediction blocks,wherein weight of the current block for the weighted sum is derived from weight index information of the current block specifying any one of weights included in a predefined weight set,wherein the weight index information of the current block is derived based on weight index information of a neighboring block of the current block.3. A non-transitory computer readable recording medium comprising a bitstream ,the bitstream includes:information ...

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Номер записи: 27
31-01-2019 дата публикации

VIDEO SIGNAL ENCODING/DECODING METHOD AND APPARATUS FOR SAME

Номер: US20190037216A1
Автор: CHO Seung Hyun
Принадлежит: Electronics and Telecommunications Research Institute

The present invention relates to a method and apparatus for designating a processing order of multiple units when encoding a video signal, and for decoding the video signal according to the designated processing order. The method for encoding a video signal includes: partitioning an encoding target block into a plurality of sub-blocks; determining a processing order of the sub-blocks included in the encoding target block; and entropy decoding information of the processing order of the sub-blocks. 1. A method for encoding a video signal , the method comprising:partitioning an encoding target block into a plurality of sub-blocks;determining a processing order of the sub-blocks included in the encoding target block; andentropy decoding information of the processing order of the sub-blocks.2. The method of claim 1 , wherein the processing order is selected among a plurality of processing order combinations that are generated by using the sub-blocks claim 1 , with reference to results of decoding the encoding target block by using each of the processing order combinations.3. The method of claim 1 , wherein the processing order is determined based on at least one of sizes of the sub-blocks claim 1 , locations of the sub-blocks claim 1 , or prediction modes for the sub-blocks.4. The method of claim 3 , wherein the processing order of a sub-block is determined to precede when the size of the sub-block is larger than other sub-blocks.5. The method of claim 3 , wherein the processing order of a sub-block encoded in inter prediction is determined to precede the processing order of a sub-block encoded in intra prediction.6. The method of claim 1 , wherein the encoding target block is a coding tree unit claim 1 , each of the sub-blocks is a coding unit included in the coding tree unit claim 1 , and the coding tree unit is partitioned in a quad-tree or binary-tree pattern.7. The method of claim 1 , wherein the encoding target block is a coding unit claim 1 , each of the sub- ...

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Номер записи: 28
06-02-2020 дата публикации

TRANSMISSION PERFORMANCE MONITORING METHOD FOR MONITORING TRANSMISSION PERFORMANCE BASED ON ANALOG OPTICAL LINK, AND MONITORING APPARATUS PERFORMING THE METHOD

Номер: US20200044756A1
Автор: CHO Seung-Hyun, KIM Joonyoung, LEE Jong Hyun, SUNG Minkyu
Принадлежит:

A transmission performance monitoring method for monitoring a transmission performance based on an analog optical link and an apparatus performing the method. The transmission performance monitoring method and apparatus centrally monitor an RF signal transmission performance in an analog optical link-based mobile haul or indoor distributed antenna system. 1. A transmission performance monitoring method comprising:receiving an analog radio frequency (RF) signal based on an analog optical link;filtering the analog RF signal;converting the filtered analog RF signal into a digital RF signal;under-sampling the converted digital RF signal;determining a carrier to noise ratio (CNR) of an analog RF signal corresponding to the under-sampled digital RF signal; andmonitoring a transmission performance of the analog optical link using the analog RF signal of which the CNR is determined.2. The transmission performance monitoring method of claim 1 , wherein the receiving of the analog RF signal comprises receiving an analog RF signal having a frequency of a band higher than that of a baseband signal.3. The transmission performance monitoring method of claim 1 , wherein the filtering of the analog RF signal comprises filtering an analog RF signal based on a frequency range of a tone signal or a desired signal to be monitored.4. The transmission performance monitoring method of claim 1 , wherein the under-sampling comprises:setting a sampling frequency used for down-conversion to a digital RF signal having a lower frequency compared to that of the converted digital RF signal; andunder-sampling a digital RF signal converted using the sampling frequency.5. The transmission performance monitoring method of claim 4 , wherein the setting of the sampling frequency comprises setting a sampling frequency based on a high-frequency of the converted digital RF signal and a low-frequency of the converted digital RF signal.6. The transmission performance monitoring method of claim 5 , wherein a ...

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Номер записи: 29
18-02-2021 дата публикации

IMAGE ENCODING/DECODING METHOD AND RECORDING MEDIUM FOR SAME

Номер: US20210051330A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

The present invention relates to a method of performing motion compensation by using motion vector prediction. To this end, a method of decoding an image may include: generating multiple motion vector candidate lists according to an inter-prediction direction of a current block; deriving multiple motion vectors for the current block by using the multiple motion vector candidate lists; determining multiple prediction blocks for the current block by using the multiple motion vectors; and obtaining a final prediction block for the current block based on the multiple prediction blocks. 1. A method of decoding an image , the method comprising:deriving multiple motion vectors for a current block according to an inter-prediction direction of the current block;determining multiple prediction blocks for the current block by using the multiple motion vectors;obtaining a final prediction block for the current block based on a weighted sum of the multiple prediction blocks; andderiving a reconstructed block for the current block based on the final prediction block,wherein weight of the current block for the weighted sum is derived based on weight of a neighboring block of the current block.2. A method of encoding an image , the method comprising:determining multiple prediction blocks for the current block;determining a final prediction block for the current block based on a weighted sum of the multiple prediction blocks; andderiving a reconstructed block for the current block based on the final prediction block, andwherein weight of the current block for the weighted sum is derived based on weight of a neighboring block of the current block.3. A non-transitory computer readable recording medium comprising a bitstream ,the bitstream includes:information about a merge index identifying respective motion information of multiple merge candidate lists,in a decoding method,wherein the merge index is used for deriving multiple motion information for the current block,wherein the ...

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Номер записи: 30
03-03-2022 дата публикации

METHOD AND DEVICE FOR ENCODING/DECODING IMAGE, AND RECORDING MEDIUM STORING BIT STREAM

Номер: US20220070446A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

An image encoding/decoding method and apparatus for predicting a second color component block using a first color component block are provided. An image decoding method of the present invention comprises deriving a prediction parameter using the first color component block, and predicting the second color component block using the derived prediction parameter. 1. An image decoding method comprising:deriving an intra prediction mode of a current chroma block;selecting one or more reference sample lines for a current luma block from a plurality of reference sample lines adjacent to the current luma block in response to the intra prediction mode of the current chroma block being inter-component intra prediction mode, the current luma block corresponding to the current chroma block;deriving prediction parameters for inter-component intra prediction using the selected one or more reference sample line; andgenerating a prediction block by performing inter-component intra prediction for the current chroma block based on the current luma block and the prediction parameters.2. The method of claim 1 , wherein claim 1 ,the one or more reference sample line for the current luma block are selected based on whether an upper boundary of the current luma block corresponds to an upper boundary of a coding tree block.3. The method of claim 2 , wherein claim 2 ,in response to an upper boundary of the current luma block corresponding to an upper boundary of a coding tree block, one upper reference sample line and three left reference sample lines are selected from the plurality of reference sample lines.4. The method of claim 1 , wherein claim 1 ,the prediction parameters indicate a correlation between luma samples in the current luma block and chroma samples in the current chroma block.5. The method of claim 1 , wherein claim 1 ,whether the intra prediction mode of the current chroma block is the inter-component intra prediction mode is determined based on inter-component intra ...

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Номер записи: 31
03-03-2022 дата публикации

VIDEO ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM HAVING BITSTREAM STORED THEREIN

Номер: US20220070450A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra-prediction mode for a current block, determining whether or not a left boundary or an upper boundary of the current block is a boundary of a predetermined image region, configuring a reference sample by using at least one reconstructed sample included in at least one reconstructed sample line adjacent to the current block based on the determination result, and performing intra-prediction for the current block based on the intra-prediction mode and the reference sample.

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Номер записи: 32
13-02-2020 дата публикации

VIDEO ENCODING/DECODING METHOD AND APPARATUS, AND RECORDING MEDIUM IN WHICH BIT STREAM IS STORED

Номер: US20200053359A1
Автор: BACK Aram, CHO Seung Hyun, Choi Hae Chul, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, Kim Jae Gon, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит:

An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus of the present invention may comprise decoding an indicator indicating whether or not partition information of a current block is derived from partition information of a corresponding block of the current block, obtaining the partition information of the current block based on the decoded indicator, and partitioning the current block based on the obtained partition information. 1. An image decoding method performed by an image decoding apparatus , the method comprising:decoding an indicator indicating whether or not partition information of a current block is derived from partition information of a corresponding block of the current block;obtaining the partition information of the current block based on the decoded indicator; andpartitioning the current block based on the obtained partition information.2. The method of claim 1 , wherein the indicator is signaled in a CTU level or a picture level.3. The method of claim 1 , wherein when the indicator has a first value claim 1 , the partition information of the current block is obtained from the partition information of the corresponding block claim 1 , andwhen the indicator has a second value, the partition information of the current block is obtained by decoding information signaled through a bitstream.4. The method of claim 1 , when the partitioning of the current block includes first partitioning and second partitioning claim 1 , the decoding of the indicator and the obtaining of the partition information are respectively performed for the first partitioning and the second partitioning.5. The method of claim 1 , when the partitioning of the current block includes first partitioning and second partitioning claim 1 ,the partition information of the current block for the first partitioning is obtained from the partition information of the corresponding block, andthe partition information of ...

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Номер записи: 33
20-02-2020 дата публикации

Image encoding/decoding image method and device, and recording medium storing bit stream

Номер: US20200059642A1
Автор: Dae Young Lee, Dong San Jun, Gwang Hoon Park, Ha Hyun Lee, Hui Yong Kim, Hyun Suk Ko, Jin Ho Lee, Jin Soo Choi, Jung Won Kang, Seung Hyun Cho, Sung Chang Lim, Tae Hyun Kim
Принадлежит: Electronics and Telecommunications Research Institute ETRI, Industry Academic Cooperation Foundation of Kyung Hee University

An image encoding/decoding method and apparatus are provided. An image encoding method performed by an image encoding apparatus may comprise determining an intra-prediction mode of a current block, configuring a reference sample of intra prediction by using at least one of a neighbor pixel of the current block in a current picture and a pixel of a reference picture, and performing intra prediction for the current block based on the intra-prediction mode and the reference sample.

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Номер записи: 34
04-03-2021 дата публикации

IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM IN WHICH BITSTREAM IS STORED

Номер: US20210067794A1
Автор: CHO Seung Hyun, Choi Jin Soo, JEON Byeung Woo, JEON Seung Su, JUN Dong San, Kang Jung Won, Kim Hui Yong, KIM Nam Uk, KO Hyun Suk, Lee Ha Hyun, LEE Jin Ho mes, Lim Sung Chang
Принадлежит:

The present invention relates to an image encoding/decoding method and device. The image decoding method according to the present invention comprises the steps of: decoding a prediction mode index; determining whether the prediction mode index indicates function-based intra prediction; inducing a parameter(s) for generating a function, when the prediction mode index indicates the function-based intra prediction; generating the function on the basis of the induced parameter(s); and performing intra prediction by using the generated function. 1. A method of decoding an image , the method comprising:decoding a prediction mode index of a current block;determining whether or not a function-based intra-prediction is performed for the current block based on the prediction mode index;performing intra-prediction for the current block for generating a prediction block of the current block; andreconstructing the current block based on the prediction block,wherein, when the function-based intra-prediction is performed for the current block, the performing intra-prediction comprisesderiving a parameter for generating a function; andperforming intra-prediction by using the function based on the derived parameter,wherein the prediction mode index is flag information signaled through a bitstream, having a first value indicating that the function-based intra-prediction is performed or a second value indicating that the function-based intra-prediction is not performed, andwherein the parameter is derived using at least one among a maximum value and a minimum value of previously reconstructed reference samples neighboring the current block.2. The method of claim 1 ,wherein the performing intra-prediction using the function is performed by inputting a reference sample value of a prediction position to the function, andthe function outputs an intra-predicted sample value.3. The method of claim 1 ,wherein, when the function-based intra-prediction is not performed for the current block, ...

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Номер записи: 35
12-03-2015 дата публикации

Detachable optical transceiver

Номер: US20150071649A1
Автор: Jie Hyun Lee, Kyeong Hwan Doo, Seung Hyun Cho, Seung Il Myong
Принадлежит: Electronics and Telecommunications Research Institute ETRI

A detachable optical transceiver includes an optical part configured to convert an electric signal into an optical signal and transmit the optical signal, or to convert an optical signal into an electric signal and output the electric signal; and an electronic circuit part configured to amplify an electric signal input from a host board and output the amplified electric signal to the optical part, and to amplify an electric signal output from the optical part and output the amplified electric signal to the host board, wherein the optical part and the electronic circuit part are formed to have housings and the optical part and the electronic circuit part are connected and disconnected via connectors formed on the respective housings.

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Номер записи: 36
29-05-2014 дата публикации

FAST PREDICTION MODE DETERMINATION METHOD IN VIDEO ENCODER BASED ON PROBABILITY DISTRIBUTION OF RATE-DISTORTION

Номер: US20140146884A1
Автор: BYUN Kyung Jin, CHO Seung Hyun, Kim Hyun Mi, KIM Ig Kyun, Park Seong Mo, SHIN Kyoung Seon
Принадлежит: Electronics and Telecommunications Research Institute

The present invention provides a fast prediction mode determination method of a video encoder that may remove an unnecessary operation of an encoder by selectively terminating early or omitting a splitting process and a pruning process based on a probability distribution of rate-distortion values, and thereby enables the encoder to quickly determine a prediction mode. The present invention may include a method that may adaptively change a termination and omission determination criterion of the splitting process and the pruning process based on a characteristic of an input image. When using the method provided by the present invention, reliability regarding the termination and omission determination of the splitting process and the pruning process may be set and thus, it is possible to adjust the tradeoff between a decrease in an operation amount and a quality degradation of the encoder. 1. A fast prediction mode determination method of a video encoder , the method comprising:an early splitting test process of determining an early split coding unit (CU) through comparison between a first rate-distortion value and a first threshold with respect to candidate prediction modes that are selected by calculating the first rate-distortion value with respect to each prediction unit (PU) split mode in a single CU of an intra screen image or an inter screen image; andan early pruning test process of determining an early pruned CU through comparison between a second rate-distortion value and a second threshold with respect to a candidate prediction mode that does not correspond to the early split CU.2. The method of claim 1 , wherein:the early split CU is a CU in which calculation of the second rate-distortion value is omitted from a pruning process, andthe early pruned CU is a CU in which a splitting process and a pruning process with respect to remaining lower CUs are omitted.3. The method of claim 1 , wherein:{'sub': LRD', 'LRD', 'LRD', 'pred', 'pred, 'the first rate- ...

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Номер записи: 37
28-02-2019 дата публикации

SEMICONDUCTOR DEVICE INCLUDING STACK STRUCTURE AND TRENCHES

Номер: US20190067320A1
Автор: CHO Seung Hyun, Kim Jong Soo, Lee Kwang Ho, YU Ji Hwan
Принадлежит:

A semiconductor device includes a plurality of blocks on a substrate. Trenches are disposed between the plurality of blocks. Conductive patterns are formed inside the trenches. A lower end of an outermost trench among the trenches is formed at a level higher than a level of a lower end of the trench adjacent to the outermost trench. Each of the blocks includes insulating layers and gate electrodes, which are alternately and repeatedly stacked. Pillars pass through the insulating layers and the gate electrodes along a direction orthogonal to an upper surface of the substrate. 1. A semiconductor device comprising:a plurality of blocks on a substrate;trenches between the plurality of blocks; andconductive patterns inside the trenches,wherein a lower end of an outermost trench among the trenches is formed at a level higher than a level of a lower end of the trench adjacent to the outermost trench, andeach of the blocks includes insulating layers and gate electrodes, which are alternately and repeatedly stacked, and pillars passing through the insulating layers and the gate electrodes along a direction orthogonal to an upper surface of the substrate.2. The semiconductor device of claim 1 , wherein the lower end of the trench adjacent to the outermost trench is formed at a level lower than a level of an upper end of the substrate.3. The semiconductor device of claim 1 , wherein the lower end of the outermost trench is formed at a level higher than a level of a lowest gate electrode among the gate electrodes.4. The semiconductor device of claim 3 , wherein the lower end of the outermost trench is formed at a level lower than a level of a second lowest gate electrode among the gate electrodes.5. The semiconductor device of claim 1 , wherein the lower end of the outermost trench is formed at a level lower than a level of an upper end of the substrate.6. The semiconductor device of claim 1 , wherein a lateral width of the outermost trench is smaller than a lateral width of ...

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Номер записи: 38
05-06-2014 дата публикации

Communication apparatus in wideband wireless optical communication system based on free space, and transmission and reception method using the same

Номер: US20140153928A1
Автор: Bheom Soon Joo, Bong Tae Kim, Jea Hoon Yu, Jeong-Dong Ryoo, Jong Hyun Lee, Seung-Hyun Cho, Tae Il Kim, Tae Whan Yoo
Принадлежит: Electronics and Telecommunications Research Institute ETRI

In a wireless optical communication system in which communication is performed based on a free space and a plurality of the communication apparatuses are arranged in a ring form around a central office terminal (COT), the communication apparatus monitors optical signals received in a first direction or in a second direction opposite to the first direction, and selects a first path through which the optical signals in the first direction are received and a second path through which the optical signals in the second direction are received. The communication apparatus converts an optical signal having a predetermined unique wavelength from among the optical signals received through the selected path into a signal of a frequency domain having a plurality of subcarriers, and obtains packet data mapped to each of the subcarriers.

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Номер записи: 39
18-03-2021 дата публикации

IMAGE ENCODING AND DECODING METHOD AND DEVICE USING PREDICTION NETWORK

Номер: US20210084290A1
Автор: CHO Seung-Hyun, CHOI Jin-Soo, Jeong Se-Yoon, KIM Hui-Yong, Kim Jong-ho, KIM Youn-Hee, LEE Dae-Yeol, Lee Joo-Young, LIM Woong, SEOK Jin-Wuk
Принадлежит: Electronics and Telecommunications Research Institute

Disclosed herein are a method and apparatus for video decoding and a method and apparatus for video encoding. A prediction block for a target block is generated by predicting the target block using a prediction network, and a reconstructed block for the target block is generated based on the prediction block and a reconstructed residual block. The prediction network includes an intra-prediction network and an inter-prediction network and uses a spatial reference block and/or a temporal reference block when it performs prediction. For learning in the prediction network, a loss function is defined, and learning in the prediction network is performed based on the loss function. 1. A decoding method , comprising:performing prediction for a target block using a prediction network, thereby generating a prediction block for the target block; andgenerating a reconstructed block for the target block based on the prediction block.2. The decoding method of claim 1 , wherein the prediction network is an intra-prediction network that performs prediction for the target block using a spatial reference block.3. The decoding method of claim 1 , wherein the prediction network is an inter-prediction network that performs prediction for the target block using a temporal reference block.4. The decoding method of claim 3 , wherein the inter-prediction network performs prediction for the target block using a spatial reference block.5. The decoding method of claim 1 , wherein:the prediction network comprises multiple prediction networks, andthe multiple prediction networks are used respectively for multiple color channels, multiple block sizes, or multiple quantization parameters.6. The decoding method of claim 1 , wherein:the prediction network generates the prediction block by performing prediction for the target block using a reference block;preprocessing is performed for a sample of the reference block before the sample of the reference block is input to the prediction network, ...

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Номер записи: 40
23-03-2017 дата публикации

BACKLIGHT UNIT AND DISPLAY APPARATUS HAVING THE SAME

Номер: US20170082790A1
Автор: Cho Hyun-Seung
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A backlight unit includes a light guide plate configured to emit light toward a display panel, and a plurality of light source units disposed adjacent to an edge of the light guide plate so as to irradiate light toward the light guide plate. The light source units include first and second light source modules configured to irradiate different types of light toward an edge of the light guide plate. The first light source modules are disposed adjacent to a first part of the edge of the light guide plate, and the second light source modules are disposed adjacent to a second part of the edge of the light guide plate. 1. A backlight unit comprising:a light guide plate configured to emit light incident thereon; anda first plurality of light source modules disposed adjacent to an edge of the light guide plate to irradiate light toward the light guide plate; anda second plurality of light source modules disposed adjacent to the edge of the light guide plate to irradiate light toward the light guide plate,wherein the first plurality of light source modules irradiates a first type of light, wherein the second plurality of light source modules irradiates a second type of light,wherein the first plurality of light source modules are disposed adjacent to a first part of the edge of the light guide plate, and the second plurality of light source modules are disposed adjacent to a second part of the edge of the light guide plate.2. The backlight unit of claim 1 , wherein the first plurality of light source modules and the second plurality of light source modules irradiate two types of light toward different parts of the same edge of the same light guide plate.3. The backlight unit of claim 1 , further comprising:a display panel,wherein the first plurality of light source modules is disposed closer to the display panel than the second plurality of light source modules.4. The backlight unit of claim 3 , further comprising:a printed circuit board having a surface on which the first ...

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Номер записи: 41
24-03-2016 дата публикации

METHOD AND APPARATUS FOR TRANSMITTING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SIGNAL IN OPTICAL NETWORK

Номер: US20160087750A1
Автор: CHO Seung Hyun, DOO Kyeong Hwan, Kang Hun Sik
Принадлежит:

A method for transmitting an orthogonal frequency division multiplexing (OFDM) signal in an optical network and apparatus therefor are provided. The method includes: converting a media access control (MAC) frame into an OFDM frame that contains a physical (PHY) level preamble, using the MAC frame which is transmitted from a MAC layer in a passive optical network (PON) to a PHY layer in an OFDM-PON; and transmitting the generated OFDM frame. 1. A method for transmitting an orthogonal frequency division multiplexing (OFDM) signal in an optical network , the method comprising:converting a media access control (MAC) frame into an OFDM frame that contains a physical (PHY) level preamble, using the MAC frame which is transmitted from a MAC layer in a passive optical network (PON) to a PHY layer in an OFDM-PON; andtransmitting the generated OFDM frame.2. The method of claim 1 , wherein in the converting of the MAC frame into the OFDM frame that contains the PHY-level preamble claim 1 , at least a part of the MAC frame is used to generate the PHY-level preamble used for transmission of the OFDM frame so that overhead incurred by adding an additional PHY-level preamble and overhead incurred by line coding are eliminated claim 1 , thereby making it possible to increase transmission efficiency.3. The method of claim 1 , wherein the MAC frame contains a laser synchronization pattern claim 1 , burst delimiter claim 1 , an idle character claim 1 , a start frame delimiter claim 1 , MAC layer data claim 1 , forward error correction (FEC) claim 1 , and a burst terminator pattern.4. The method of claim 1 , wherein the converting of the MAC frame into the OFDM frame comprises: receiving the MAC frame from the MAC layer in the PON through the PHY layer in the OFDM-PON; obtaining layer synchronization pattern information from the received MAC frame; and modulating the obtained laser synchronization pattern information by mapping it into short training field (STF) symbols that indicate ...

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Номер записи: 42
12-03-2020 дата публикации

MEMORY DEVICES INCLUDING VOLTAGE GENERATION CIRCUIT FOR PERFORMING BACKGROUND CALIBRATION

Номер: US20200082872A1
Автор: CHO Seung-Hyun, Lee Yong-jae, Seo Young-Hun, SHIN Chang-ho
Принадлежит:

Memory devices are provided. A memory device includes a voltage generation circuit that includes an offset compensator configured to receive a reference voltage and an offset code and to link the offset code to the reference voltage. The voltage generation circuit includes a comparator configured to compare the reference voltage linked to the offset code with a bit line pre-charge voltage and to output driving control signals. The voltage generation circuit includes a driver configured to output the bit line pre-charge voltage at a target level of the reference voltage in response to the driving control signals. The voltage generation circuit includes a background calibration circuit configured to generate the offset code for performing control so that a target short current flows through an output node of the driver from which the bit line pre-charge voltage is output. Related methods of generating a bit line pre-charge voltage are also provided. 1. A voltage generation circuit configured to generate a bit line pre-charge voltage , the voltage generation circuit comprising:an offset compensator configured to receive a reference voltage and an offset code and to link the offset code to the reference voltage;a comparator configured to compare the reference voltage linked to the offset code with the bit line pre-charge voltage and to output first and second driving control signals;a driver configured to output the bit line pre-charge voltage at a target level of the reference voltage in response to the first and second driving control signals; anda background calibration circuit configured to generate the offset code for performing control so that a target short current flows through an output node of the driver from which the bit line pre-charge voltage is output in response to the first and second driving control signals.2. The voltage generation circuit of claim 1 , wherein the driver comprises:a first transistor connected between a power voltage and the output ...

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Номер записи: 43
12-03-2020 дата публикации

PREDICTION METHOD AND DEVICE USING REFERENCE BLOCK

Номер: US20200084441A1
Автор: CHO Seung-Hyun, Choi Hae-Chul, JUN Dong-San, Kang Jung-Won, KIM Hui-Yong, Kim Jae-Gon, KO Hyunsuk, LEE Ha-Hyun, Lee Jin-Ho, LIM Sung-Chang, PARK Do-Hyeon
Принадлежит:

Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In the encoding and decoding of a video, a prediction mode may be selected from among multiple prediction modes using prediction mode information for a target block, and prediction may be performed on the target block based on the selected prediction mode, wherein the prediction mode information includes information related to a reference block, and wherein the reference block comprises one or more of a spatially neighboring block that is spatially adjacent to the target block and a temporally neighboring block that is temporally adjacent to the target block. When the selected prediction mode includes a plurality of prediction modes, a prediction mode to be used for prediction of the target block may be decided on among the plurality of selected prediction modes through signaling of the prediction mode decision information. 120-. (canceled)21. A video decoding method , comprising:generating a merge list for a target block; andperforming an inter prediction for the target block using the merge list.22. The video decoding method of claim 21 , further comprising determining whether to use a merge mode using a merge identifier claim 21 , whereina specific prediction mode among a plurality of prediction modes is selected in a case that that merge mode is performed.23. The video decoding method of claim 22 , wherein:motion information for sub-blocks are derived in the selected prediction mode.24. The video decoding method of claim 22 , wherein:a refinement for motion information of the target block is performed in the selected prediction mode.25. The video decoding method of claim 21 , wherein:the inter prediction is performed based on an average of motion vectors of a plurality of reference blocks.26. The video decoding method of claim 21 , wherein:two merge candidates of the merge list are used for the inter prediction.27. The video decoding method of claim 21 , wherein ...

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Номер записи: 44
05-04-2018 дата публикации

NOVEL PROMOTER AND USE THEREOF

Номер: US20180094268A1
Автор: CHANG Jin Sook, CHO Seung Hyun, Kim Seong Bo, LEE Ji Hyun, LEE Seung Bin, Lee Young Mi, Park Seung Won
Принадлежит:

The present disclosure relates to a novel promoter, a vector comprising the promoter, a microorganism comprising the vector, and a method for producing a target protein using the promoter. 1. An isolated nucleic acid molecule having a promoter activity comprising a nucleotide sequence of SEQ ID NO: 1.2. A target protein expression cassette comprising the isolated nucleic acid molecule having a promoter activity of and a gene encoding a target protein.3. A recombinant vector comprising the isolated nucleic acid molecule of or the target protein expression cassette of .4. The recombinant vector of claim 3 , wherein the gene encoding the target protein is an ATPE gene.5. A recombinant microorganism introduced with the vector of .6Corynebacterium.. The recombinant microorganism of claim 5 , wherein the microorganism is a microorganism of the genus7CorynebacteriumCorynebacterium glutamicumCorynebacterium ammoniagenes.. The recombinant microorganism of claim 6 , wherein the microorganism of the genus is or8Escherichia.. The recombinant microorganism of claim 5 , wherein the microorganism is a microorganism of the genus9EscherichiaEscherichia coli.. The recombinant microorganism of claim 8 , wherein the microorganism of the genus is10. A method for producing a target protein claim 8 , comprising:{'claim-ref': {'@idref': 'CLM-00005', 'claim 5'}, '(a) culturing the recombinant microorganism of in a medium to produce a target protein; and'}(b) recovering the produced target protein from the cultured microorganism or the medium.11. A method for producing psicose claim 8 , comprising:{'claim-ref': {'@idref': 'CLM-00004', 'claim 4'}, '(a) culturing the microorganism introduced with the vector of ; and'}(b) reacting the cultured microorganism with fructose to produce psicose.12. A recombinant microorganism introduced with the vector of .13Corynebacterium.. The recombinant microorganism of claim 12 , wherein the microorganism is a microorganism of the ...

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Номер записи: 45
02-04-2020 дата публикации

Method and apparatus for image processing using context-adaptive entropy model

Номер: US20200107023A1
Автор: Hui-Yong Kim, Hyunsuk KO, Jin-Soo Choi, Jin-Wuk Seok, Jong-Ho Kim, Joo-young Lee, Se-Yoon Jeong, Seung-Hyun Cho, Seung-Kwon Beack, Woong Lim, Youn-hee KIM
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Disclosed herein is a context-adaptive entropy model for end-to-end optimized image compression. The entropy model exploits two types of contexts. The two types of contexts are a bit-consuming context and a bit-free context, respectively, and these contexts are classified depending on the corresponding context requires the allocation of additional bits. Based on these contexts, the entropy model may more accurately estimate the distribution of each latent representation using a more generalized form of entropy models, thus improving compression performance.

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Номер записи: 46
17-07-2014 дата публикации

ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS-PASSIVE OPTICAL NETWORK COMPRISING OPTICAL NETWORK UNIT AND OPTICAL LINE TERMINAL

Номер: US20140199074A1
Автор: CHO Seung-Hyun, DOO Kyeong-Hwan, Lee Jie-Hyun, Lee Jong-Hyun, LEE Sang-Soo, MYONG Seung-Il
Принадлежит: Electronics and Telecommunications Research Institute

An orthogonal frequency division multiple access-passive optical network including a plurality of optical network units each configured to generate orthogonal frequency division multiplexed signals, which are allocated thereto, based on a central frequency for frequency division multiplexing that is allocated in advance, and to use the generated signals in upstream transmission. 1. An optical network unit of an orthogonal frequency division multiple access-passive optical network , the optical network unit comprising:a digital signal processer configured to generate orthogonal frequency division multiplexing subcarriers that are allocated to the optical network unit within a baseband;a digital-to-analog converter configured to convert an orthogonal frequency division multiplexed signal having passed through the digital signal processor into an analog form; andan electrical IQ-modulator configured to perform a frequency up-shift on the orthogonal frequency division multiplexed signal, which is converted into the analog form for frequency division multiplexing that is allocated to each optical network unit.2. The optical network unit of claim 1 , wherein the digital signal processor comprises an inverse fast Fourier transform unit configured to generate a plurality of orthogonal frequency division multiplexing subcarriers.3. The optical network unit of claim 2 , wherein allocated ranges of the orthogonal frequency division multiplexing subcarriers generated are allocated by an optical line terminal so as to differ with center frequencies used in each optical network unit without overlapping each other claim 2 , so that the subcarriers are allocated for a full size of an inverse fast Fourier transform unit.4. The optical network unit of claim 3 , wherein if center frequencies serving as a basis in each optical network unit are the same claim 3 , allocated ranges of the orthogonal frequency division multiplexing subcarriers generated are allocated without overlapping ...

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Номер записи: 47
04-05-2017 дата публикации

RADIO-OVER-FIBER (RoF) TRANSMISSION SYSTEM

Номер: US20170126320A1
Автор: CHO Seung Hyun, CHUNG Hwan Seok, KIM Sun Me, LEE Jong Hyun
Принадлежит:

A radio-over-fiber (RoF) transmission system includes at least one baseband unit (BBU) connected to a core network of a service provider that provides a mobile Internet service, an optical line terminal (OLT) configured to convert a radio signal received from the at least one BBU into an optical signal, an optical distribution network (ODN) comprising an optical fiber and an optical splitter, at least one optical network unit (ONU) configured to receive the optical signal from the OLT via the ODN and convert the optical signal into a radio signal, and at least one remote radio head (RRH) configured to receive the radio signal from the at least one ONU and output the radio signal via a plurality of antennas. 1. A radio-over-fiber (RoF) transmission system comprising:at least one baseband unit (BBU) connected to a core network of a service provider that provides a mobile Internet service;an optical line terminal (OLT) configured to convert a radio signal received from the at least one BBU into an optical signal;an optical distribution network (ODN) comprising an optical fiber and an optical splitter;at least one optical network unit (ONU) configured to receive the optical signal from the OLT via the ODN and convert the optical signal into a radio signal; andat least one remote radio head (RRH) configured to receive the radio signal from the at least one ONU and output the radio signal via a plurality of antennas.2. The RoF transmission system of claim 1 , wherein the OLT is connected to the at least one BBU via a service node interface (SNI) corresponding to a first reference point.3. The RoF transmission system of claim 2 , wherein the first reference point is utilized to define a signal type and an allowable signal delay or latency between the OLT and the at least one BBU.4. The RoF transmission system of claim 1 , wherein each of the at least one ONU is connected to the at least one RRH via a user node interface (UNI) corresponding to a second reference point.5. ...

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Номер записи: 48
01-09-2022 дата публикации

METHOD AND DEVICE FOR MACHINE LEARNING-BASED IMAGE COMPRESSION USING GLOBAL CONTEXT

Номер: US20220277491A1
Автор: CHO Seung-Hyun, CHOI Jin-Soo, Jeong Se-Yoon, KIM Hui-Yong, Kim Jong-ho, KIM Youn-Hee, KO Hyunsuk, Kwon Hyoung-Jin, Lee Joo-Young
Принадлежит: Electronics and Telecommunications Research Institute

Disclosed herein are a method and apparatus for image compression based on machine learning using a global context. The disclosed image compression network employs an existing image quality enhancement network for an end-to-end joint learning scheme. The image compression network may jointly optimize image compression enhancement and quality enhancement. The image compression networks and image quality enhancement networks may be easily combined within a unified architecture which minimizes total loss, and may be easily jointly optimized. 1. An encoding method , comprising:generating a bitstream by performing entropy encoding that uses an entropy model on an input image; andtransmitting or storing the bitstream.2. The encoding method of claim 1 , wherein:the entropy model is a context-adaptive entropy model, andthe context-adaptive entropy model exploits three different types of contexts.3. The encoding method of claim 2 , wherein the contexts are used to estimate parameters of a Gaussian mixture model.4. The encoding method of claim 3 , wherein the parameters include a weight parameter claim 3 , a mean parameter claim 3 , and a standard deviation parameter.5. The encoding method of claim 1 , wherein:the entropy model is a context-adaptive entropy model, andthe context-adaptive entropy model uses a global context.6. The encoding method of claim 1 , wherein the entropy encoding is performed by combining an image compression network with a quality enhancement network.7. The encoding method of claim 6 , wherein the quality enhancement network is a very deep super resolution network (VDSR) claim 6 , a residual dense network (RDN) or a grouped residual dense Network (GRDN).8. The encoding method of claim 1 , wherein:horizontal padding or vertical padding is applied to the input image,the horizontal padding is to insert one or more rows into the input image at a center of a vertical axis thereof, andthe vertical padding is to insert one or more columns into the input ...

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Номер записи: 49
01-09-2022 дата публикации

Image encoding/decoding method and device, and recording medium in which bitstream is stored

Номер: US20220279171A1
Автор: Dong San Jun, Ha Hyun Lee, Hui Yong Kim, Hyun Suk Ko, Jin Ho Lee, Jin Soo Choi, Jung Won Kang, Seung Hyun Cho, Sung Chang Lim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

The present invention relates to an image encoding/decoding method and apparatus. An image decoding method performing intra prediction according to the present invention may comprise dividing a current block into at least one sub-block; deriving an intra prediction mode for the at least one sub-block; constructing a reference sample for the intra prediction; and performing intra prediction for the at least one sub-block based on the derived intra prediction mode.

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Номер записи: 50
07-08-2014 дата публикации

METHOD OF ALLOCATING UPSTREAM BANDWIDTH RESOURCE AND METHOD OF TRANSMITTING UPSTREAM DATA IN ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS-OPEN OPTICAL SUBSCRIBER NETWORK

Номер: US20140219659A1
Автор: BANG Hak-Jeon, CHO Seung-Hyun, DOO Kyeong-Hwan, Lee Jie-Hyun, MYONG Seung-Il
Принадлежит: Electronics and Telecommunications Research Institute

There are provided a method of allocating upstream bandwidth resources and a method of transmitting upstream data in an orthogonal frequency division multiple access-open optical subscriber network. The method of allocating an upstream bandwidth resource according to an embodiment of the invention includes receiving queue status information from each optical network unit (ONU), and allocating an upstream bandwidth by providing to each ONU a 2-D upstream bandwidth map on a subcarrier-time resource through a frame synchronized at constant cycles, based on the queue status information received from each ONU. 1. A method of allocating an upstream bandwidth resource of an optical line terminal in an orthogonal frequency division multiple access-open optical subscriber network , the method comprising:receiving queue status information from each optical network unit (ONU); andallocating an upstream bandwidth by providing to each ONU a 2-D upstream bandwidth map on a subcarrier-time resource through a frame synchronized at constant cycles, based on the queue status information received from each ONU.2. The method of claim 1 , wherein claim 1 , in the allocating of the upstream bandwidth claim 1 , for each service of the ONU claim 1 , allocation bytes during a corresponding service interval are calculated according to a service interval composed in units of at least one frame claim 1 , and the 2-D upstream bandwidth map claim 1 , in which the calculated allocation bytes are allocated to a corresponding service class claim 1 , is created.3. The method of claim 1 , wherein claim 1 , in the allocating of the upstream bandwidth claim 1 , the upstream bandwidth is allocated in units of subcarriers of a frame synchronized with each subscriber device.4. The method of claim 3 , wherein claim 3 , in the allocating of the upstream bandwidth claim 3 , when the upstream bandwidth is allocated in units of subcarrier claim 3 , a remaining space of the subcarriers claim 3 , a negative ...

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Номер записи: 51
07-08-2014 дата публикации

METHOD OF SELECTING WAVELENGTH OF OPTICAL NETWORK UNIT IN PASSIVE OPTICAL NETWORK

Номер: US20140219661A1
Автор: CHO Seung-Hyun, DOO Kyeong-Hwan, Lee Han-Hyub, Lee Jie-Hyun, LEE Sang-Soo, MYONG Seung-Il
Принадлежит: Electronics and Telecommunications Research Institute

Provided is a method of selecting a wavelength of an optical network unit including selecting a pre-loaded default wavelength as an available wavelength candidate or the wavelength that has been changed when a preset wavelength changing condition is satisfied as the available wavelength candidate, acquiring frame synchronization for a downstream signal having the same wavelength as the selected available wavelength candidate, and transmitting a registration request message to an optical line terminal (OLT) from which the downstream signal has been transmitted when the frame synchronization is acquired, assigning the available wavelength candidate to an available wavelength used for communication with the OLT and registering the terminal in the OLT when a registration allowance message is received from the OLT. 1. A method of selecting a wavelength of an optical network unit (ONU) network unit , comprising:selecting a pre-loaded default wavelength as an available wavelength candidate or the wavelength that has been changed when a preset wavelength changing condition is satisfied as the available wavelength candidate;acquiring frame synchronization for a downstream signal having same wavelength as the selected available wavelength candidate; and transmitting a registration request message to an optical line terminal (OLT) from which the downstream signal has been transmitted when the frame synchronization is acquired, and assigning the available wavelength candidate to an available wavelength used for communication with the OLT when a registration allowance message is received from the OLT and registering the ONU in the OLT.2. The method of claim 1 , further comprising communicating with the OLT network unit when the ONU is registered in the OLT.3. The method of claim 2 , further comprising waiting to maintain a stop state until the registration allowance message is received when a registration rejection message is received from the OLT.4. The method of claim 1 , ...

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Номер записи: 52
18-05-2017 дата публикации

L-arabinose Isomerase Variants with Improved Conversion Activity and Method for Production of D-tagatose Using them

Номер: US20170137856A1
Автор: CHO Kyong Yeon, CHO Seung Hyun, KIM Chang Gyeom, KIM Jin Ha, Kim Seong Bo, KIM Yang Hee, OH In Seok, YANG Sung Jae
Принадлежит:

The present invention relates to the development of an L-arabinose isomerase variant from DSM 5068, which is a kind of thermophile, on the basis of protein molecular modeling. Moreover, the present invention relates to a method of producing D-tagatose from D-galactose by using the enzyme or a microorganism of the genus expressing the enzyme. 1. A method for producing D-tagatose , the method comprising converting D-galactose into D-tagatose by the arabinose isomerase variant having an increased activity of converting D-galactose into D-tagatose , the arabinose isomerase variant having a substitution of an amino acid other than phenylalanine for an amino acid at position 275 and a substitution of proline for an amino acid at position 469 of the amino acid sequence set forth in SEQ ID NO: 1.2. The method for producing D-tagatose of claim 1 , wherein the substitution of the amino acid for the amino acid at position 275 is any one amino acid selected from the group consisting of valine claim 1 , methionine and isoleucine.3. The method for producing D-tagatose of claim 1 , the method comprising reacting a solution containing D-galactose according to with a metal ion source selected from the group consisting of manganese ions claim 1 , magnesium ions and zinc ions in the presence of the arabinose isomerase variant according to .4. The method for producing D-tagatose of claim 3 , wherein the metal ion source is contained at a concentration of 0.1 mM to 10 mM. This application is a continuation of U.S. application Ser. No. 15/112,232, filed Jul. 18, 2016. U.S. application Ser. No. 15/112,232 is a National Stage Entry of International Application No. PCT/KR2014/003658 filed on Apr. 25, 2014 (WO 2015/133678), and claims the benefit of PCT/KR2014/001789, filed on Mar. 5, 2014, which is hereby incorporated by reference in its entirety for all purposes as if fully set forth herein.The present invention relates to an L-arabinose isomerase variant from DSM 5068, which is produced ...

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Номер записи: 53
03-06-2021 дата публикации

METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE AND RECORDING MEDIUM STORING BIT STREAM

Номер: US20210168362A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

An image encoding/decoding method and apparatus are provided. An image decoding method of the present invention comprises decoding first information indicating whether a maximum of N intra prediction modes are used or a maximum of M intra prediction modes are used for an intra prediction for a current block, in which the M is smaller than the N, deriving an intra prediction mode of the current block, inverse-mapping the derived intra prediction mode on a corresponding intra prediction mode among the maximum N intra prediction modes when the decoded first information indicates that the maximum M intra prediction modes are used for the intra prediction for the current block, and generating an intra prediction block by performing an intra prediction for the current block, based on the inverse-mapped intra prediction mode. 1. An image decoding method comprising:deriving a primary intra prediction mode of a current block by decoding a bitstream;deriving an intra prediction mode of the current block by modifying the primary intra prediction mode, in case the primary intra prediction mode is a directional prediction mode;generating a prediction block for the current block by performing intra prediction for the current block based on either the primary intra prediction mode or the derived intra prediction mode; andreconstructing the current block based on the prediction block.2. The method of claim 1 ,wherein the deriving the intra prediction mode based on the primary intra prediction mode is performed based on a shape of the current block.3. The method of claim 2 ,wherein the deriving the intra prediction mode based on the primary intra prediction mode is performed in case the shape of the current block is a predetermined shape.4. The method of claim 1 ,wherein, in case the primary intra prediction mode is a non-directional prediction mode, the deriving the intra prediction mode based on the primary intra prediction mode is not performed, and the intra prediction for the ...

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Номер записи: 54
09-05-2019 дата публикации

IMAGE ENCODING/DECODING METHOD AND RECORDING MEDIUM FOR SAME

Номер: US20190141334A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

The present invention relates to a method of performing motion compensation by using motion vector prediction. To this end, a method of decoding an image may include: generating multiple motion vector candidate lists according to an inter-prediction direction of a current block; deriving multiple motion vectors for the current block by using the multiple motion vector candidate lists; determining multiple prediction blocks for the current block by using the multiple motion vectors; and obtaining a final prediction block for the current block based on the multiple prediction blocks. 1. A method of decoding an image , the method comprising:generating multiple motion vector candidate lists according to an inter-prediction direction of a current block;deriving multiple motion vectors for the current block by using the multiple motion vector candidate lists;determining multiple prediction blocks for the current block by using the multiple motion vectors; andobtaining a final prediction block for the current block based on the multiple prediction blocks.2. The method of claim 1 , wherein the inter-prediction direction indicates uni-directional or multi-directional prediction claim 1 , and the multi-directional prediction includes tri-directional prediction or more.3. The method of claim 1 , wherein each of the motion vector candidate lists is generated for a reference picture list or for a reference picture.4. The method of claim 1 , wherein each of the motion vector candidate lists includes at least one of a spatial motion vector candidate derived from a spatial neighboring block of the current block claim 1 , a temporal motion vector candidate derived from a collocated block of the current block claim 1 , and a motion vector candidate of a predefined value.5. The method of claim 4 , wherein each of the motion vector candidate lists includes a combined motion vector candidate generated by combining at least two of: the spatial motion vector candidate claim 4 , the ...

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Номер записи: 55
17-06-2021 дата публикации

SYSTEM ON CHIP, MEMORY DEVICE, ELECTRONIC DEVICE COMPRISING THE SOC AND MEMORY DEVICE, AND METHOD FOR STORING DATA IN THE ELECTRONIC DEVICE

Номер: US20210182223A1
Автор: AHN Soo-woong, CHO Seung-Hyun, Choi Ji Hyun, Kim Hyun-Joong, SOHN Joon Sik, SONG Woong-jae
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Provided is a SoC, a memory device, an electronic device and a method for storing data in an electronic device. The electronic device comprises a host configured to output data, and a memory device including a memory storage configured to receive the data and to store the data. The host is configured to generate data bus inversion (DBI) information on the data to be provided to the memory device in accordance with a data parallelizing system, the data parallelizing system being inside the memory device, and to provide the DBI information to the memory device. The memory device is configured to provide the data to the memory storage, the data output from the host, the data encoded in accordance with the DBI information, the providing the data being in accordance with the data parallelizing system. 1. An electronic device comprising:a host configured to output data; anda memory device including a memory storage configured to receive the data and to store the data,wherein the host is configured to generate data bus inversion (DBI) information on the data to be provided to the memory device in accordance with a data parallelizing system, the data parallelizing system being inside the memory device, and to provide the DBI information to the memory device, andthe memory device is configured to provide the data to the memory storage, the data output from the host, the data encoded in accordance with the DBI information, the providing the data being in accordance with the data parallelizing system.2. The electronic device of claim 1 , wherein the DBI information generated by the host includes claim 1 ,first DBI information relating to the data to be provided to the memory device, andsecond DBI information related to the data to be provided to the memory storage,the host is configured to provide the data to the memory device, the data encoded using the first DBI information and the first DBI information,the memory device is configured to decode the data provided from the ...

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Номер записи: 56
31-05-2018 дата публикации

HOST UNIT AND RADIO UNIT FOR DISTRIBUTED ANTENNA SYSTEM SUPPORTING LARGE DATA TRAFFIC

Номер: US20180152244A1
Автор: CHO Seung-Hyun, CHUNG Hwan Seok, LEE Jong Hyun, SUNG Minkyu
Принадлежит:

A host unit is provided between a remote radio head and a radio unit. The host unit performs a conversion between a digital optical signal used by the remote radio head and an analog optical signal used by the radio unit. A frequency of the analog optical signal converted by the host unit may be an intermediate frequency. The radio unit performs a conversion between an analog optical signal used by the host unit and an analog radio signal used by a user terminal. A frequency of the analog radio signal may be included in a millimeter wave band or radio frequency band. 1. A host unit connected to a remote radio head and a radio unit , the host unit comprising:a digital optical transceiver configured to convert, to a digital electrical signal, a digital optical signal that is received through a downlink from the remote radio head to the host unit;a digital signal processor configured to generate a baseband digital electrical signal by de-framing the converted digital electrical signal;a digital-to-analog converter configured to convert the baseband digital electrical signal to an analog electrical signal;an analog front end controller configured to adjust the amplitude of the analog electrical signal based on an optical transmission between the host unit and the radio unit;a combiner configured to couple the amplitude adjusted analog electrical signal with at least one of a frequency synchronization signal, a time division duplexing signal, and a control and monitor signal for the radio unit; andan analog optical transceiver configured to convert the combined analog electrical signal to an analog optical signal to transmit the combined analog electrical signal through a downlink from the host unit to the radio unit.2. The host unit of claim 1 , wherein the downlink from the remote radio head to the host unit uses a digital optical signal.3. The host unit of claim 1 , further comprising:a switch configured to classify the baseband digital electrical signal depending on ...

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Номер записи: 57
31-05-2018 дата публикации

HOST UNIT AND REMOTE RADIO HEAD FOR DISTRIBUTED ANTENNA SYSTEM SUPPORTING LARGE DATA TRAFFIC

Номер: US20180152246A1
Автор: CHO Seung-Hyun, CHUNG Hwan Seok, LEE Jong Hyun, SUNG Minkyu
Принадлежит:

A remote radio head disposed between a baseband unit and a host unit. The remote radio head may transmit and receive a digital optical signal to the baseband unit, transmit and receive an analog optical signal to the host unit, and convert the digital optical signal and the analog optical signal, a frequency of the analog optical signal transmitted and received by the remote radio head and the host unit may be an intermediate frequency of a baseband, the host unit may be disposed between the remote radio head and a radio unit, the host unit and the radio unit may transmit and receive the analog optical signal, and the frequency of the analog optical signal transmitted and received by the host unit and the radio unit may be the intermediate frequency with a baseband signal. 1. A remote radio head connected to a host unit and a baseband unit , the remote radio head comprising:a digital optical transceiver configured to convert a digital baseband optical signal received from the baseband unit into a digital electric signal;a digital signal processor configured to deframe the converted digital electric signal;a digital-to-analog converter configured to convert the deframed digital electric signal into an analog electric signal;an analog front-end controller configured to adjust the level of the analog electric signal for optical transmission to the host device;a combiner configured to combine the analog electric signal of which the level is adjusted with at least one of a frequency synchronization signal, a time division duplex (TDD) switching control signal, or a monitoring and management signal for the host unit; andan analog optical transceiver configured to convert, into an analog optical signal, the analog electric signal combined with at least one of the frequency synchronization signal, the TDD switching control signal, or the monitoring and management signal.2. The remote radio head of claim 1 , further comprising:a switch configured to select and distribute the ...

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Номер записи: 58
16-05-2019 дата публикации

METHOD AND APPARATUS FOR QUANTIZATION

Номер: US20190149823A1
Автор: CHO Seung-Hyun, CHOI Jin-Soo, Jeong Se-Yoon, KIM Hui-Yong, Kim Jong-ho, KIM Youn-Hee, LEE Dae-Yeol, Lee Joo-Young, LIM Woong, SEOK Jin-Wuk
Принадлежит: Electronics and Telecommunications Research Institute

Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In quantization and dequantization, multiple quantization methods and multiple dequantization methods may be used. The multiple quantization methods include a variable-rate step quantization method and a fixed-rate step quantization method. The variable-rate step quantization method may be a quantization method in which an increment in a quantization step depending on an increase in a value of a quantization parameter by 1 is not fixed. The fixed-rate step quantization method may be a quantization method in which the increment in the quantization step depending on the increase of the value of the quantization parameter by 1 is fixed. 1. An encoding method , comprising:performing quantization that uses a quantization method,wherein the quantization method is a variable-rate step quantization method, andwherein the variable-rate step quantization method is a quantization method in which an increment in a quantization step depending on an increase in a value of a quantization parameter by 1 is not fixed.2. The encoding method of claim 1 , wherein claim 1 , as the value of the quantization parameter is smaller claim 1 , the increment in the quantization step of the variable-rate step quantization method depending on the increase in the value of the quantization parameter by 1 is larger.3. The encoding method of claim 1 , further comprising selecting the quantization method from among multiple quantization methods claim 1 ,wherein the multiple quantization methods comprise a fixed-rate step quantization method and the variable-rate step quantization method, andwherein the fixed-rate step quantization method is a quantization method in which the increment in the quantization step depending on the increase in the value of the quantization parameter by 1 is fixed.4. The encoding method of claim 3 , wherein the increment in the quantization step of the variable-rate step ...

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Номер записи: 59
22-09-2022 дата публикации

APPARATUS AND METHOD OF GENERATING TERAHERTZ SIGNAL USING DIRECTLY-MODULATED LASER

Номер: US20220303017A1
Автор: CHO Seung-Hyun, Kim Eon-Sang, MOON Sang Rok, SUNG Minkyu
Принадлежит:

Provided are an apparatus and method of generating a terahertz (THz) signal using a directly-modulated laser. An apparatus of generating a THz signal includes a first directly-modulated laser configured to output a local oscillator (LO) signal, a second directly-modulated laser configured to receive a baseband signal used as data and optically modulate the baseband signal, a band-pass filter configured to filter a spectral component of the baseband signal optically modulated and outputted through the second directly-modulated laser by using a specific frequency bandwidth, a coupler configured to couple the baseband signal filtered through the band-pass filter and the LO signal to each other, and a uni-travelling-carrier photodiode (UTC-PD) configured to generate a THz signal by beating the baseband signal and the LO signal coupled to each other. 1. An apparatus of generating a terahertz (THz) signal , the apparatus comprising:a first directly-modulated laser configured to output a local oscillator (LO) signal;a second directly-modulated laser configured to receive a baseband signal used as data and optically modulate the baseband signal;a band-pass filter configured to filter a spectral component of the baseband signal optically modulated and outputted through the second directly-modulated laser by using a specific frequency bandwidth;a coupler configured to couple the baseband signal filtered through the band-pass filter and the LO signal to each other; anda uni-travelling-carrier photodiode (UTC-PD) configured to generate a THz signal by beating the baseband signal and the LO signal coupled to each other.2. The apparatus of claim 1 , wherein the band-pass filter has a frequency bandwidth for suppressing a spectral component corresponding to a long wavelength among spectral components of the baseband signal.3. The apparatus of claim 1 , wherein the UTC-PD is configured to generate the THz signal having a frequency corresponding to a frequency difference between the ...

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Номер записи: 60
24-06-2021 дата публикации

Video encoding/decoding method and apparatus, and recording medium in which bit stream is stored

Номер: US20210195188A1
Автор: Aram BACK, Dong San Jun, Ha Hyun Lee, Hae Chul Choi, Hui Yong Kim, Hyun Suk Ko, Jae Gon Kim, Jin Ho Lee, Jin Soo Choi, Jung Won Kang, Seung Hyun Cho, Sung Chang Lim
Принадлежит: Electronics and Telecommunications Research Institute ETRI, Industry Academic Cooperation Foundation of Hanbat National University, University Industry Cooperation Foundation of Korea Aerospace University

An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus of the present invention may comprise decoding an indicator indicating whether or not partition information of a current block is derived from partition information of a corresponding block of the current block, obtaining the partition information of the current block based on the decoded indicator, and partitioning the current block based on the obtained partition information.

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Номер записи: 61
30-05-2019 дата публикации

OPTICAL REPEATER ADJUSTING POWER OF OUTPUT OPTICAL SIGNAL AND OUTPUT ELECTRICAL SIGNAL AND METHOD PERFORMED BY THE OPTICAL REPEATER

Номер: US20190165858A1
Автор: CHO Seung-Hyun, KIM Joonyoung, LEE Jong Hyun, SUNG Minkyu
Принадлежит:

An optical repeater performs an electrical-to-optical conversion based on a power level of an optical signal or an optical modulation index (OMI) required by a radio unit or a host unit connected to the optical repeater. Further, the optical repeater performs an optical-to-electrical conversion based on a power level of a radio frequency (RF) signal required by the radio unit or the host unit connected to the optical repeater. 1. An optical transmitter included in an optical repeater of a base station for mobile communication , the optical transmitter comprising:an electrical interface configured to receive a radio frequency (RF) signal;a first RF power measurement component configured to measure a power level of the received RF signal;an RF amplifier configured to amplify the RF signal passing through the first RF power measurement component;a second RF power measurement component configured to measure a power level of the amplified RF signal;an RF attenuator configured to adjust an amplitude of the RF signal passing through the second RF power measurement component;a third RF power measurement component configured to measure a power level of the amplitude adjusted RF signal;a laser diode configured to generate an optical signal using the RF signal passing through the third RF power measurement component;a laser diode output optical power measurement component configured to measure a power level of the output optical signal; anda controller configured to control, an operation of at least one of the RF amplifier, the RF attenuator, and the laser diode based on the power measured by the first RF power measurement component, the second RF power measurement component, the third RF power measurement component, and the laser diode output optical power measurement component such that an optical modulation index (OMI) of the optical signal satisfies a preset OMI.2. The optical transmitter of claim 1 , wherein the controller is configured to determine the OMI of the optical ...

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Номер записи: 62
30-05-2019 дата публикации

APPARATUS AND METHOD FOR ADJUSTING MODULATION INDEX OF ANALOG OPTICAL SIGNAL USING INTERFERENCE PHENOMENON OF COHERENT LIGHT

Номер: US20190165866A1
Автор: CHO Seung-Hyun, KIM Joonyoung, LEE Jong Hyun, SUNG Minkyu
Принадлежит:

A method and apparatus for adjusting a modulation index of an analog optical signal using an interference phenomenon of a coherent light, the method including dividing an analog optical signal for a first path and a second path, extracting an optical carrier from an analog optical signal divided for the first path, controlling an intensity and a phase of the optical carrier, and controlling a modulation index of the analog optical signal by combining an analog optical signal divided for the second path and the optical carrier of which the intensity and the phase are controlled. 1. A method of controlling a modulation index of an analog optical signal , the method comprising:dividing an analog optical signal for a first path and a second path;extracting an optical carrier from an analog optical signal divided for the first path;controlling an intensity and a phase of the optical carrier, andcontrolling a modulation index of the analog optical signal by combining an analog optical signal divided for the second path and the optical carrier of which the intensity and the phase are controlled.2. The method of claim 1 , wherein the controlling of the intensity and the phase of the optical carrier comprises:controlling the intensity of the optical carrier based on a target value of the modulation index.3. The method of claim 1 , wherein in a case in which the modulation index is to be increased claim 1 , the controlling of the intensity and the phase of the optical carrier comprises:controlling the phase of the optical carrier such that a destructive interference occurs when the modulation index is controlled.4. The method of claim 1 , wherein in a case in which the modulation index is to be decreased claim 1 , the controlling of the intensity and the phase of the optical carrier comprises:controlling the phase of the optical carrier such that a constructive interference occurs when the modulation index is controlled.5. The method of claim 1 , further comprising:delaying ...

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Номер записи: 63
29-09-2022 дата публикации

KRAMERS-KRONIG RECEPTION-BASED THz SIGNAL RECEPTION APPARATUS AND FREQUENCY OFFSET COMPENSATION METHOD USING THE SAME

Номер: US20220311591A1
Автор: CHO Seung-Hyun, Kim Eon-Sang, MOON Sang Rok, SUNG Minkyu
Принадлежит:

Provided are a Kramers—Kronig (KK) reception-based terahertz (THz) signal reception apparatus and a method for compensating a frequency offset using the same. A method of compensating for a frequency offset performed by a THz signal reception apparatus includes receiving, from a THz signal transmission apparatus, a THz signal including carrier signals corresponding to three different frequency bands, extracting, from the received THz signal, a reference carrier included in the THz signal or a sampling clock generated in a process of generating a data signal, and compensating for a frequency offset generated in a process of transmitting the THz signal by using the extracted reference carrier or sampling clock. 1. A method of compensating for a frequency offset performed by a terahertz (THz) signal reception apparatus , the method comprising:receiving, from a THz signal transmission apparatus, a THz signal including carrier signals corresponding to three different frequency bands;extracting, from the received THz signal, a reference carrier included in the THz signal or a sampling clock generated in a process of generating a data signal; andcompensating for a frequency offset generated in a process of transmitting the THz signal by using the extracted reference carrier or sampling clock.2. The method of claim 1 , wherein the THz signal is generated by photo-mixing the reference carrier claim 1 , a data signal carrier for a data signal to be transmitted claim 1 , and an optical carrier for generating a THz band signal.3. The method of claim 1 , wherein the compensating comprises:identifying initial frequency spectrum information on the reference carrier or sampling clock of the THz signal received from the THz signal transmission apparatus;extracting current frequency spectrum information on the reference carrier or sampling clock of the received THz signal; andcompensating for the frequency offset of the THz signal determined through the initial frequency spectrum ...

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Номер записи: 64
30-05-2019 дата публикации

IMAGE ENCODING/DECODING METHOD AND APPARATUS, AND RECORDING MEDIUM STORING BITSTREAM

Номер: US20190166375A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra prediction mode for a current block, selecting at least one reconstructed sample line neighboring to the current block, constructing a reference sample using at least one reconstructed sample included in the at least one reconstructed sample line, and performing intra prediction for the current block based on the intra prediction mode and the reference sample. 1. An image decoding method comprising:deriving an intra prediction mode for a current block;selecting at least one reconstructed sample line neighboring to the current block;constructing a reference sample using at least one reconstructed sample included in the at least one reconstructed sample line; andperforming intra prediction for the current block based on the intra prediction mode and the reference sample.2. The image decoding method of claim 1 , wherein the at least one reconstructed sample line includes at least one of neighbor reconstructed sample lines adjacent to an upper side and a left side of the current block.3. The image decoding method of claim 2 , wherein the number of the neighbor reconstructed sample lines adjacent to the upper side and the left side is determined based on at least one of a size claim 2 , a shape claim 2 , and an intra prediction mode of the current block.4. The image decoding method of claim 1 , wherein the reference sample is derived using a weighted sum of the at least one reconstructed sample.5. The image decoding method of claim 4 , wherein the weighted sum is performed based on at least one of the intra prediction mode and a distance between the current block and the reconstructed sample line.6. The image decoding method of claim 1 , wherein the construction of a reference sample comprises:searching a reconstructed sample similar to the current block from among reconstructed samples included in at ...

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Номер записи: 65
21-05-2020 дата публикации

METHOD AND APPARATUS FOR IMAGE PROCESSING USING QUANTIZATION PARAMETER

Номер: US20200162736A1
Автор: CHO Seung-Hyun, CHOI Jin-Soo, Jeong Se-Yoon, KIM Hui-Yong, Kim Jong-ho, KIM Youn-Hee, KO Hyunsuk, Lee Joo-Young, LIM Woong, SEOK Jin-Wuk
Принадлежит: Electronics and Telecommunications Research Institute

Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In image encoding, encoding using multiple quantization parameters is performed on a transform coefficient. Two quantized coefficients are generated through encoding that uses two quantization parameters. Based on the two quantized coefficients, a quantized coefficient difference is generated. Information about the quantized coefficient difference is transmitted from an encoding apparatus to a decoding apparatus through binary encoding. The information about the quantized coefficient difference may be selectively transmitted. By means of the information about the quantized coefficient difference, a high-quality video may be provided. 1. An encoding method , comprising:generating a coefficient by performing a transform on a residual block; andperforming encoding that uses multiple quantization parameters on the coefficient.2. The encoding method of claim 1 , wherein:the multiple quantization parameters are two quantization parameters, anda difference between the two quantization parameters is a predefined value.3. The encoding method of claim 2 , wherein the predefine value is 6.4. The encoding method of claim 2 , wherein two quantized coefficients are generated through the encoding that uses the two quantization parameters.5. The encoding method of claim 1 , wherein performing the encoding comprises:generating a first quantized coefficient by performing quantization that uses a first quantization parameter on the coefficient;generating a second quantized coefficient by performing quantization that uses a second quantization parameter on the coefficient; andgenerating a quantized coefficient difference based on the first quantized coefficient and the second quantized coefficient.6. The encoding method of claim 5 , wherein the quantized coefficient difference is a difference between the first quantized coefficient and twice the second quantized coefficient.7. The ...

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Номер записи: 66
06-06-2019 дата публикации

METHOD AND APPARATUS FOR IMAGE ENCODING/DECODING

Номер: US20190174136A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

The present invention relates to a method for encoding/decoding a video. To this end, the method for decoding a video may include: deriving a spatial merge candidate from at least one of spatial candidate blocks of a current block, deriving a temporal merge candidate from a co-located block of the current block, and generating a prediction block of the current block based on at least one of the derived spatial merge candidate and the derived temporal merge candidate, wherein a reference picture for the temporal merge candidate is selected based on a reference picture list of a current picture including the current block and a reference picture list of a co-located picture including the co-located block. 1. A method for decoding a video , the method comprising:deriving a spatial merge candidate from at least one of spatial candidate blocks of a current block;deriving a temporal merge candidate from a co-located block of the current block; andgenerating a prediction block of the current block based on at least one of the derived spatial merge candidate and the derived temporal merge candidate,wherein a reference picture for the temporal merge candidate is selected based on a reference picture list of a current picture including the current block and a reference picture list of a co-located picture including the co-located block.2. The method of claim 1 , wherein the reference picture for the temporal merge candidate is selected based on whether the reference picture list of the current picture and the reference picture list of the co-located picture are equal to each other.3. The method of claim 1 , wherein when the reference picture list of the current picture and the reference picture list of the co-located picture are equal to each other claim 1 , the reference picture for the temporal merge candidate is selected as a reference picture being used by a motion vector derived from the co-located block.4. The method of claim 1 , wherein when at least one reference ...

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Номер записи: 67
04-06-2020 дата публикации

METHOD AND APPARATUS FOR MEASURING VIDEO QUALITY BASED ON DETECTION OF CHANGE IN PERCEPTUALLY SENSITIVE REGION

Номер: US20200175668A1
Автор: CHO Seung-Hyun, CHOI Jin-Soo, Jeong Se-Yoon, KIM Hui-Yong, Kim Jong-ho, KIM Youn-Hee, KO Hyunsuk, LEE Dae-Yeol, Lee Joo-Young, LIM Woong, SEOK Jin-Wuk
Принадлежит: Electronics and Telecommunications Research Institute

Disclosed herein are a method and apparatus for measuring video quality based on a perceptually sensitive region. The quality of video may be measured based on a perceptually sensitive region and a change in the perceptually sensitive region. The perceptually sensitive region includes a spatial perceptually sensitive region, a temporal perceptually sensitive region, and a spatio-temporal perceptually sensitive region. Perceptual weights are applied to a detected perceptually sensitive region and a change in the detected perceptually sensitive region. Distortion is calculated based on the perceptually sensitive region and the change in the perceptually sensitive region, and a result of quality measurement for a video is generated based on the calculated distortion. 1. A video-processing apparatus , comprising:a communication unit for receiving a reference video and a comparison video; anda processing unit for generating a result of video quality measurement for the comparison video,wherein the processing unit calculates distortion using feature information of the reference video, feature information of the comparison video, a perceptually sensitive region of the reference video, a perceptually sensitive region of the comparison video, and a change from the perceptually sensitive region of the reference video to the perceptually sensitive region of the comparison video, and generates the result of the video quality measurement based on the distortion.2. The video-processing apparatus of claim 1 , wherein:the feature information of the reference video includes one or more of spatial feature information of the reference video, temporal feature information of the reference video, and spatio-temporal feature information of the reference video, andthe feature information of the comparison video includes one or more of spatial feature information of the comparison video, temporal feature information of the comparison video, and spatio-temporal feature information of the ...

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Номер записи: 68
20-06-2019 дата публикации

NOVEL PROMOTER AND USE THEREOF

Номер: US20190185857A1
Автор: CHANG Jin Sook, CHO Seung Hyun, Kim Seong Bo, LEE Ji Hyun, LEE Seung Bin, Lee Young Mi, Park Seung Won
Принадлежит:

The present invention relates to a novel promoter, a vector comprising the promoter, a microorganism comprising the promoter or the vector, and a method for producing a target product using the microorganism. 1. A nucleic acid molecule having a promoter activity consisting of any one nucleotide sequence selected from the group consisting of SEQ ID NOS: 1 to 3.2. A gene expression cassette comprising the nucleic acid molecule of and a target gene.3. A recombinant vector comprising the nucleic acid molecule of .4Corynebacterium. A recombinant microorganism of the genus comprising the nucleic acid molecule of .5CorynebacteriumCorynebacterium glutamicumCorynebacterium. The recombinant microorganism according to claim 4 , wherein the microorganism of the genus is or ammoniagenesis.6. A method of producing a target product claim 4 , comprising:{'claim-ref': {'@idref': 'CLM-00004', 'claim 4'}, '(a) culturing the recombinant microorganism of in a medium; and'}(b) recovering a target product from the microorganism or the medium.7. The method according to claim 6 , wherein the target product is psicose claim 6 , tagatose claim 6 , or an amino acid.8. A recombinant vector comprising the gene expression cassette of .9Corynebacterium. A recombinant microorganism of the genus comprising the recombinant vector of .10Corynebacterium. A recombinant microorganism of the genus comprising the recombinant vector of .11CorynebacteriumCorynebacterium glutamicumCorynebacterium. The recombinant microorganism according to claim 9 , wherein the microorganism of the genus is or ammoniagenesis.12CorynebacteriumCorynebacterium glutamicumCorynebacterium. The recombinant microorganism according to claim 10 , wherein the microorganism of the genus is or ammoniagenesis.13. A method of producing a target product claim 10 , comprising:{'claim-ref': {'@idref': 'CLM-00009', 'claim 9'}, '(a) culturing the recombinant microorganism of in a medium; and'}(b) recovering a target product from the ...

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Номер записи: 69
20-06-2019 дата публикации

INTRA PREDICTION METHOD AND DEVICE

Номер: US20190191155A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

The present invention relates to an intra prediction method and apparatus. The image decoding method according to the present invention may comprise decoding information on intra prediction; and generating a prediction block by performing intra prediction for a current block based on the information on intra prediction. The information on intra prediction may include information on an intra prediction mode, and the intra prediction mode may include a curved intra prediction mode. 1. An image decoding method , comprising:decoding information on intra prediction; andgenerating a prediction block by performing intra prediction for a current block based on the information on intra prediction, whereinthe information on intra prediction includes information on an intra prediction mode, andthe intra prediction mode includes a curved intra prediction mode.2. The image decoding method of claim 1 , wherein the intra prediction mode of the current block is a curved intra prediction mode claim 1 , andthe information on intra prediction includes direction information.3. The image decoding method of claim 2 , wherein the information on intra prediction includes information specifying a position of a reference pixel.4. The image decoding method of claim 3 , wherein the current block includes at least one pixel group including at least one pixel claim 3 , andthe information specifying the position of the reference pixel is assigned in a unit of the pixel group.5. The image decoding method of claim 4 , wherein the pixel group is configured in a unit of at least one of a pixel unit claim 4 , a horizontal line unit claim 4 , a vertical line unit claim 4 , a diagonal line unit claim 4 , a right angle line unit claim 4 , and a sub-block unit claim 4 , each being included in the current block.6. The image decoding method of claim 3 , wherein the information specifying the position of the reference pixel includes information on at least one curvature parameter or at least one weight ...

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Номер записи: 70
30-07-2015 дата публикации

SOFTWARE-DEFINED NETWORKING METHOD

Номер: US20150215914A1
Автор: CHO Seung Hyun, DOO Kyeong Hwan, LEE Jong Hyun, Lee Sang Soo, PARK Heuk, YOON Bin Yeong
Принадлежит:

A software-defined networking (SDN) method. The SDN method according to an exemplary embodiment may be used in managing and operating SDN-based network resources in an optical communications network, a fixed mobile convergence subscriber network, a wired broadband subscriber network, a distributed mobile communications base station network, etc. 1. A software-defined networking (SDN) method in an optical communications network , the SDN method comprising: 'defining a control parameter based on software in response to a traffic request of a node by monitoring a traffic flow, and transmitting a control command with respect to the software-defined control parameter to one or more nodes through a control channel by using an OpenFlow; and', 'a control device transmitting a control command, comprisingthe one or more nodes executing the control command, wherein the one or more nodes have received the control command from the control device.2. The SDN method of claim 1 , wherein the control parameter is related to physical layer transmission claim 1 , which comprises at least one of a wavelength conversion claim 1 , a channel interval claim 1 , a bandwidth claim 1 , a transmission speed claim 1 , a modulation format claim 1 , and path switching claim 1 , wherein each control parameter is software-defined.3. The SDN method of claim 1 , wherein the transmitting of the control command comprises:detecting the traffic request of the one or more nodes by monitoring the traffic flow;defining, based on software, the control parameter in response to the detected traffic request; andgenerating the control command based on the software-defined control parameter and transmitting the generated control command to the one or more nodes through the control channel by using an OpenFlow Application Programming Interface (API).4. The SDN method of claim 3 , wherein the defining of the control parameter based on software comprises defining each control parameter based on software in accordance ...

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Номер записи: 71
18-06-2020 дата публикации

APPARATUS AND METHOD OF GENERATING BROADBAND SINGLE-SIDEBAND SIGNAL BASED ON LASER DIODE

Номер: US20200195351A1
Автор: CHO Seung Hyun, Kim Joon Young, LEE Jong Hyun, SUNG Min Kyu
Принадлежит:

An apparatus for generating a broadband single-sideband signal based on a laser diode includes a first optical coupler configured to receive an optical carrier signal to divide the optical carrier signal into signals corresponding to a plurality of paths, a hybrid coupler configured to perform Hilbert transform on a radio frequency (RF) signal, a first slave laser and a second slave laser each configured to modulate optical output powers of the divided optical carrier signals by using a Hilbert-transformed RF signal, and a second optical coupler configured to receive an optical output power-modulated optical carrier signal to output a single-sideband signal. 1. A method of generating a broadband single-sideband signal based on a laser diode , the method comprising:receiving an optical carrier signal and a radio frequency (RF) signal;dividing, by a first optical coupler, the optical carrier signal into signals corresponding to a plurality of paths;inputting divided optical carrier signals to a plurality of slave lasers equal to number of the paths;inputting the RF signal to the plurality of slave lasers via a hybrid coupler;modulating, by the plurality of slave lasers, optical output powers of the divided optical carrier signals by using the RF signal; andreceiving, by a second optical coupler, an optical output power-modulated optical carrier signal to output a single-sideband signal.2. The method of claim 1 , wherein the laser diode is a direct modulation laser diode.3. The method of claim 1 , wherein the hybrid coupler is a 90-degree hybrid coupler.4. The method of claim 3 , wherein the RF signal passing through the hybrid coupler is a Hilbert-transformed RF signal.5. The method of claim 1 , wherein the plurality of slave lasers comprise first and second slave lasers.6. The method of claim 5 , further comprising controlling claim 5 , by a bias phase controller claim 5 , a phase of an output light of each of the first and second slave lasers.7. The method of claim ...

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Номер записи: 72
27-06-2019 дата публикации

Image encoding/decoding method and recording medium therefor

Номер: US20190200040A1
Автор: Dong San Jun, Ha Hyun Lee, Hui Yong Kim, Hyun Suk Ko, Jin Ho Lee, Jin Soo Choi, Jung Won Kang, Seung Hyun Cho, Sung Chang Lim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

The present invention relates to a method for encoding/decoding a video. To this end, the method for decoding a video may include: generating a merge candidate list of a current block including at least one merge candidate corresponding to each of a plurality of reference picture lists; determining at least one piece of motion information by using the merge candidate list; and generating a prediction block of the current block by using the determined at least one piece of motion information.

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Номер записи: 73
28-07-2016 дата публикации

Control apparatus and method for monitoring optical fiber link

Номер: US20160218801A1
Автор: Chan Gyo HAN, Hwan Seok CHUNG, Jong Hyun Lee, Sang Soo Lee, Seung Hyun Cho
Принадлежит: Electronics and Telecommunications Research Institute ETRI

An optical fiber cable of a mobile fronthaul system based on a radio over fiber (RoF), which includes a control apparatus for monitoring an analog optical link according to an exemplary embodiment, may be monitored. The monitoring control apparatus may include an optical signal monitor to monitor an optical signal passing through an optical fiber cable, and a system controller to control the optical signal based on a result of the monitoring. The optical signal monitor may calculate an average optical power, carrier-to-noise ratio (CNR), and a size of a nonlinear component from an electrical signal, which has been acquired from the optical signal. Then, the optical signal monitor may control the calculated average optical power, CNR, and nonlinear component.

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Номер записи: 74
04-07-2019 дата публикации

VIDEO ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM HAVING BITSTREAM STORED THEREIN

Номер: US20190208199A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra-prediction mode for a current block, determining whether or not a left boundary or an upper boundary of the current block is a boundary of a predetermined image region, configuring a reference sample by using at least one reconstructed sample included in at least one reconstructed sample line adjacent to the current block based on the determination result, and performing intra-prediction for the current block based on the intra-prediction mode and the reference sample. 1. An image decoding method , comprising:deriving an intra-prediction mode for a current block;determining whether or not a left boundary or an upper boundary of the current block is a boundary of a predetermined image region;configuring a reference sample by using at least one reconstructed sample included in at least one reconstructed sample line adjacent to the current block based on the determination result; andperforming intra-prediction for the current block based on the intra-prediction mode and the reference sample.2. The method of wherein the predetermined image region is one of a picture claim 1 , a slice claim 1 , a slice segment claim 1 , a tile claim 1 , and a coding tree block.3. The method of wherein when both of the left boundary and the upper boundary of the current block are not the boundary of the predetermined image region claim 1 ,the reference sample is configured by using a same reconstructed sample line for the left side and the upper side of the current block.4. The method of claim 1 , wherein when a first boundary among the left and upper boundaries of the current block is the boundary of the predetermined image region claim 1 , and a remaining second boundary is not the boundary of the predetermined image region claim 1 ,a number of the reconstructed sample lines used for configuring the reference sample ...

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Номер записи: 75
11-07-2019 дата публикации

VERTICAL MEMORY DEVICE

Номер: US20190214407A1
Автор: CHO Seung-Hyun, Kim Kwang Ho, Lee Kwang Ho, YU Ji Hwan
Принадлежит:

A vertical memory device includes a substrate having a cell array region and a connection region adjacent to the cell array region, a plurality of gate electrode layers stacked on the cell array region and the connection region of the substrate, and forming a stepped structure in the connection region, a first metal line dividing the plurality of gate electrode layers and connected to the cell array region and the connection region of the substrate, and a second metal line dividing a portion of the plurality of gate electrode layers and connected to the connection region of the substrate. A depth of a lower end portion of the second metal line may be greater than a depth of a lower end portion of the first metal line in the cell array region, based on an upper surface of the substrate. 1. A vertical memory device comprising:a substrate having a cell array region and a connection region adjacent to the cell array region;a plurality of gate electrode layers stacked on the cell array region and the connection region of the substrate, and the plurality of gate electrode layers form a stepped structure in the connection region; andat least one first metal line dividing the plurality of gate electrode layers and connected to the cell array region and the connection region of the substrate,wherein a depth of a lower end portion of the at least one first metal line at an edge portion of the connection region is greater than a depth of a lower end portion of the at least one first metal line in the cell array region, based on an upper surface of the substrate, andwherein a height from the upper surface of the substrate to an upper surface of an uppermost gate electrode layer among the plurality of gate electrode layers is about 4.4 μm or more.2. The vertical memory device of claim 1 , wherein a difference between the depth of the lower end portion of the at least one first metal line at an edge portion of the connection region and the depth of the lower end portion of the at ...

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Номер записи: 76
11-07-2019 дата публикации

METHOD AND DEVICE FOR ENCODING/DECODING IMAGE, AND RECORDING MEDIUM STORING BIT STREAM

Номер: US20190215512A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

An image encoding/decoding method and apparatus for predicting a second color component block using a first color component block are provided. An image decoding method of the present invention comprises deriving a prediction parameter using the first color component block, and predicting the second color component block using the derived prediction parameter. 1. An image decoding method of predicting a second color component block using a first color component block , the image decoding method comprising:deriving a prediction parameter using the first color component block; andpredicting the second color component block using the derived prediction parameter.2. The image decoding method according to claim 1 , wherein the first color component block is a luma block and the second color component block is a chroma block.3. The image decoding method according to claim 1 , further comprising:determining whether or not to perform the predicting of the second color component block using the first color component block, based on a size or a shape of the second color component block.4. The image decoding method according to claim 1 , further comprising:restructuring the first color component block, based on a size of the first color component block and a size of the second color component block.5. The image decoding method according to claim 4 , wherein when the first color component block has a larger size than that of the second color component block claim 4 , the restructuring of the first color component block comprises down-sampling the first color component block.6. The image decoding method according to claim 4 , wherein when the first color component block has a size smaller than that of the second color component block claim 4 , the restructuring of the first color component block comprises up-sampling the first color component block.7. The image decoding method according to claim 4 , wherein the restructuring of the first color component block is performed based ...

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Номер записи: 77
11-07-2019 дата публикации

METHOD AND APPARATUS FOR TRANSFORM-BASED IMAGE ENCODING/DECODING

Номер: US20190215516A1
Автор: CHO Seung Hyun, Choi Jin Soo, CHOI Jun Woo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KIM Nam Uk, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, LEE Yung Lyul, Lim Sung Chang
Принадлежит:

The present invention relates to a method and apparatus for encoding and decoding a video image based on transform. The method for decoding a video includes: determining a transform mode of a current block; inverse-transforming residual data of the current block according to the transform mode of the current block; and rearranging the inverse-transformed residual data of the current block according to the transform mode of the current block, wherein the transform mode includes at least one of SDST (Shuffling Discrete Sine Transform), SDCT (Shuffling Discrete cosine Transform), DST (Discrete Sine Transform) or DCT (Discrete Cosine Transform). 1. A method for decoding a video , the method comprising:determining a transform mode of a current block;inverse-transforming residual data of the current block according to the transform mode of the current block; andrearranging the inverse-transformed residual data of the current block according to the transform mode of the current block,wherein the transform mode includes at least one of SDST (Shuffling Discrete Sine Transform), SDCT (Shuffling Discrete cosine Transform), DST (Discrete Sine Transform) or DCT (Discrete Cosine Transform).2. The method of claim 1 , wherein only when the transform mode of the current block is one of the SDST and the SDCT claim 1 , the rearranging is performed.3. The method of claim 1 , wherein the determining of the transform mode of the current block includes:obtaining transform mode information of the current block from a bitstream; anddetermining the transform mode of the current block based on the transform mode information.4. The method of claim 1 , wherein the determining of the transform mode of the current block is performed based on at least one of a prediction mode of the current block claim 1 , depth information of the current block claim 1 , a size of the current block claim 1 , and a shape of the current block.5. The method of claim 4 , wherein when the prediction mode of the current ...

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Номер записи: 78
19-08-2021 дата публикации

STRUT STRUCTURE WITH STRIP FOR EXHAUST DIFFUSER AND GAS TURBINE HAVING THE SAME

Номер: US20210254508A1
Автор: CHO Seung Hyun, Lee Ik Sang
Принадлежит:

A strut structure with a strip for an exhaust diffuser of a gas turbine and a gas turbine having the same are provided. The strut structure with a strip for an exhaust diffuser of a gas turbine is configured to include a plurality of struts disposed along an outer circumference of a diffuser body disposed on a central side of the exhaust diffuser, and one or more strips formed on the strut, wherein an exhaust gas passing through the strut flows along the strip from a leading edge of the strut to alleviate a separated flow phenomenon, and wherein if the exhaust gas enters the strip, corner vortices are formed on the leading edge of the strut, and if the exhaust gas flows along the strip, streamwise vortices are formed to alleviate a pressure loss of the exhaust gas. 1. A strut structure with a strip for an exhaust diffuser of a gas turbine comprising:a plurality of struts disposed along an outer circumference of a diffuser body disposed on a central side of the exhaust diffuser; andone or more strips formed on the strut,wherein an exhaust gas passing through the strut flows along the strip from a leading edge of the strut to alleviate a separated flow phenomenon, andwherein if the exhaust gas enters the strip, corner vortices are formed on the leading edge of the strut, and if the exhaust gas flows along the strip, streamwise vortices are formed to alleviate a pressure loss of the exhaust gas.2. The strut structure with the strip for the exhaust diffuser of claim 1 ,wherein the strip is formed on the strut in parallel to a flow direction of the exhaust gas.3. The strut structure with the strip for the exhaust diffuser of claim 2 ,wherein the strip is a projection type strip protruding outward from the strut.4. The strut structure with the strip for the exhaust diffuser of claim 3 ,wherein the projection type strip has a rectangular cross-sectional shape with respect to the flow direction of the exhaust gas.5. The strut structure with the strip for the exhaust ...

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Номер записи: 79
18-07-2019 дата публикации

IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM IN WHICH BITSTREAM IS STORED

Номер: US20190222837A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

The present invention relates to an image encoding/decoding method and apparatus. An image decoding method performing intra prediction according to the present invention may comprise dividing a current block into at least one sub-block; deriving an intra prediction mode for the at least one sub-block; constructing a reference sample for the intra prediction; and performing intra prediction for the at least one sub-block based on the derived intra prediction mode. 1. An image decoding method for performing intra prediction , the method comprising:dividing a current block into at least one sub-block;deriving an intra prediction mode for the at least one sub-block;constructing a reference sample for the intra prediction; andperforming intra prediction for the at least one sub-block based on the derived intra prediction mode.2. The image decoding method of claim 1 , wherein if a size of the current block corresponds to a predetermined size claim 1 , the dividing is performed.3. The image decoding method of claim 1 , wherein if a horizontal or vertical length of the current block is a dividable length claim 1 , the division is performed.4. The image decoding method of claim 1 , wherein the at least one sub-block has a predetermined size or shape.5. The image decoding method of claim 1 , wherein the division is performed based on division information about the current block.6. The image decoding method of claim 1 , wherein the derivation of an intra prediction mode for the at least one sub-block is performed based on at least one of an intra prediction mode of the current block and an intra prediction mode of at least one neighbor block.7. The image decoding method of claim 6 , wherein the intra prediction mode for the sub-block is derived as a statistic value of the intra prediction mode of the at least one neighbor block claim 6 , andwherein the statistic value is at least one of a minimum value, a maximum value, a most frequent value, a median value, a mean value, and ...

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Номер записи: 80
19-08-2021 дата публикации

SECURE COMMUNICATION METHOD AND DEVICE PERFORMING THE SAME

Номер: US20210258778A1
Автор: CHO Seung-Hyun, KIM Joonyoung, MOON Sang Rok, PARK Heuk, SUNG Minkyu
Принадлежит:

A secure communication method and an apparatus performing the same are disclosed. The communication method includes receiving a signal encrypted based on at least one attractor and decrypting a security signal received using a neural network trained based on a training signal. 1. A communication method comprising:receiving a signal encrypted based on at least one attractor; anddecrypting a security signal received using a neural network trained based on a training signal.2. The communication method of claim 1 , wherein the training signal comprises a message for training and a signal obtained by encrypting the message for training.3. The communication method of claim 1 , wherein the decrypting comprises classifying the security signal into a portion corresponding to each attractor included in the at least one attractor.4. The communication method of claim 1 , wherein the at least one attractor comprises a first attractor and a second attractor claim 1 , andthe decrypting comprises:determining a portion corresponding to the first attractor, of the security signal to be a binary 1 and determining a portion corresponding to the second attractor, of the security signal to be a binary 0.5. The communication method of claim 1 , further comprising:generating the at least one attractor;encrypting a message based on the at least one attractor; andtransmitting the encrypted signal.6. The communication method of claim 5 , wherein the generating comprises:determining a parameter for generating an attractor; andacquiring an output of a nonlinear system based on the parameter.7. The communication method of claim 6 , wherein the nonlinear system comprises a Duffing oscillator and a Lorenz system.8. The communication method of claim 5 , wherein the encrypting comprises:outputting a different attractor included in the at least one attractor based on each state of the message.9. The communication method of claim 5 , wherein the at least one attractor comprises a first attractor and a ...

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Номер записи: 81
27-08-2015 дата публикации

AUTOSTEREOSCOPIC MULTI-VIEW IMAGE DISPLAY APPARATUS

Номер: US20150245015A1
Автор: Cho Hyun-Seung, Kang Ki-hyung
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

An autostereoscopic multi-view image display apparatus includes an image panel including pixels arranged in rows and columns, a backlight unit configured to provide light to the image panel, a viewing zone separator disposed in front of the image panel and configured to provide different viewpoints according to viewing zones, and a controller configured to control multi-view images included into one image frame to be divided into two groups, control two sub-frames including multi-view images included in the divided groups to be sequentially displayed, and control lights of different directions to be provided to the image panel at points of time when the two sub-frames are displayed, respectively. 1. An autostereoscopic multi-view image display apparatus comprising:an image panel including pixels arranged in rows and columns;a backlight unit configured to provide light to the image panel;a viewing zone separator disposed in front of the image panel and configured to provide different viewpoints according to viewing zones; anda controller configured to control multi-view images included into one image frame to be divided into two groups, control two sub-frames including multi-view images included in respective divided groups to be sequentially displayed, and control lights of different directions to be provided to the image panel at points of time when the two sub-frames are displayed, respectively.2. The display apparatus as claimed in claim 1 , wherein the two sub-frames comprise a first sub-frame and a second sub-frame claim 1 , andthe controller is further configured to control the backlight unit to provide light of a first direction, with respect to the display apparatus, to the image panel in a first sub-field period, in which the first sub-frame is displayed, and to provide light of a second direction opposite to the first direction to the image panel in a second sub-field period, in which the second sub-frame is displayed.3. The display apparatus as claimed in ...

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Номер записи: 82
24-08-2017 дата публикации

OPTICAL SIGNAL TRANSMISSION SYSTEM AND METHOD OF ALLOCATING CENTER FREQUENCIES OF INTERMEDIATE FREQUENCY (IF) CARRIERS FOR FREQUENCY DIVISION MULTIPLEXING (FDM) OPTICAL FIBER LINK

Номер: US20170244486A1
Автор: CHO Seung Hyun, CHUNG Hwan Seok, HAN Chan Gyo, LEE Jong Hyun, SUNG Min Kyu
Принадлежит:

An optical signal transmission system and method of allocating center frequencies of intermediate frequency (IF) carriers in a frequency division multiplexing (FDM) optical fiber link. The optical signal transmission method includes determining a center frequency interval between modulated signals based on a bandwidth of the modulated signals or a center frequency of a modulated signal having a lowest center frequency, among the modulated signals, reallocating center frequencies to the modulated signals based on the center frequency interval between the modulated signals, and converting the modulated signals reallocated the center frequencies from electrical signal into optical signal and transmitting the optical signal. 1. An optical signal transmission method comprising:determining a center frequency interval between modulated signals based on a bandwidth of the modulated signals;reallocating center frequencies to the modulated signals based on the center frequency interval between the modulated signals; andconverting the modulated signals reallocated the center frequencies from electrical signal into optical signal and transmitting the optical signal.2. The optical signal transmission method of claim 1 , wherein the determining comprises determining a multiple of the bandwidth of the modulated signals to be the center frequency interval between the modulated signals.3. The optical signal transmission method of claim 1 , wherein the reallocating comprises reallocating a center frequency to a modulated signal having a lowest center frequency claim 1 , among the modulated signals claim 1 , based on a half the center frequency interval between the modulated signals.4. The optical signal transmission method of claim 3 , wherein the reallocating of the center frequencies comprises reallocating respective center frequencies to the modulated signals based on an interval corresponding to the center frequency interval between the modulated signals claim 3 , from the center ...

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Номер записи: 83
01-08-2019 дата публикации

VIDEO ENCODING/DECODING METHOD AND APPARATUS, AND RECORDING MEDIUM IN WHICH BIT STREAM IS STORED

Номер: US20190238841A1
Автор: CHO Seung Hyun, Choi Hae Chul, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, Kim Jae Gon, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang, PARK Do Hyeon
Принадлежит:

An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus according to the present invention may comprise deriving an intra-prediction mode of a current block, and performing intra-prediction for the current block based on the intra-prediction mode. The deriving of the intra-prediction mode may comprise decoding a predetermined mode sameness indicator. 1. An image decoding method performed by an image decoding apparatus , the method comprising:deriving an intra-prediction mode of a current block; andperforming intra-prediction for the current block based on the intra-prediction mode.2. The method of claim 1 , wherein the deriving of the intra-prediction mode comprises: decoding a predetermined mode sameness indicator claim 1 , whereinthe predetermined mode sameness indicator indicates whether or not the intra-prediction mode of the current block is identical to a predetermined mode.3. The method of claim 2 , wherein the predetermined mode is one of an inter-prediction mode of at least one neighbor block of the current block claim 2 , a DC mode and a planar mode.4. The method of claim 2 , wherein when the predetermined mode sameness indicator has a first value claim 2 , the intra-prediction mode of the current block is derived as the predetermined mode.5. The method of claim 2 , wherein when the predetermined mode sameness indicator has a second value claim 2 , the deriving of the intra-prediction mode further comprises:configuring an MPM list for the current block; anddecoding an MPM matching indicator for the MPM list,wherein the MPM matching indicator indicates whether or not the intra-prediction mode of the current block is included in the MPM list.6. The method of claim 5 , wherein when the MPM matching indicator has a first value claim 5 , an MPM index for the MPM list is decoded claim 5 , and the intra-prediction mode of the current block is derived as a candidate mode indicated by the MPM ...

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Номер записи: 84
20-11-2014 дата публикации

APPARATUS AND METHOD FOR SKIPPING FRACTIONAL MOTION ESTIMATION IN HIGH EFFICIENCY VIDEO CODING

Номер: US20140341270A1
Автор: Byun Kyung-Jin, CHO Seung-Hyun, Eum Nak-Woong, Kim Hyun-Mi, Park Seong-Mo
Принадлежит: Electronics and Telecommunications Research Institute

An apparatus and method for skipping fractional motion estimation (FME) in high efficiency video coding (HEVC) are disclosed. The apparatus includes a current sum of absolute differences (SAD) acquisition unit, a redundancy determination unit, and a motion estimation skip unit. The SAD acquisition unit acquires the SAD from an integer motion estimation (IME) unit when the IME unit performs IME on a coding tree block (CTB). The redundancy determination unit determines whether or not the CTB is an estimated redundant block using the current SAD. The motion estimation skip unit provides an FME unit with an FME skip signal of the CTB depending on whether or the CTB is an estimated redundant block. 1. An apparatus for skipping fractional motion estimation (FME) in high efficiency video coding (HEVC) , the apparatus comprising:a sum of absolute differences (SAD) acquisition unit configured to acquire a current SAD from an integer motion estimation (IME) unit when the IME unit performs IME on a coding tree block (CTB);a redundancy determination unit configured to determine whether or not the CTB is an estimated redundant block using the current SAD; anda motion estimation skip unit configured to provide an FME unit with an FME skip signal of the CTB depending on whether or the CTB is an estimated redundant block.2. The apparatus of claim 1 , wherein the redundancy determination unit calculates a first calculated value using the current SAD and a first weight claim 1 , calculates a second calculated value using a previous SAD acquired from a previous CTB and a second weight claim 1 , and determines whether or not the CTB is an estimated redundant block depending on which of the first and second calculated values is larger.3. The apparatus of claim 2 , wherein if the first calculated value is larger than the second calculated value claim 2 , the redundancy determination unit determines the CTB to be an estimated redundant block.4. The apparatus of claim 3 , wherein:the first ...

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Номер записи: 85
31-08-2017 дата публикации

ANALOG OPTICAL TRANSMISSION SYSTEM USING DISPERSION MANAGEMENT TECHNIQUE

Номер: US20170250753A1
Автор: CHO Seung Hyun, CHUNG Hwan Seok, HAN Chan Gyo, LEE Jong Hyun, SUNG Min Kyu
Принадлежит: Electronics and Telecommunications Research Institute

Provided is an analog optical transmission system using a dispersion management technique. The analog optical transmission system may include a digital unit (DU) pool including a plurality of DUs to transmit an optical signal; a plurality of radio units (RUs) to receive the optical signal; and one or more dispersion management apparatus to remove a signal distortion component caused by an interaction between a chirp and chromatic dispersion by compensating for the chromatic dispersion before the plurality of RUs receives the optical signal that is transmitted from the DU pool. 1. An analog optical transmission system , comprising:a digital unit (DU) pool comprising a plurality of DUs configured to transmit an optical signal;a plurality of radio units (RUs) configured to receive the optical signal; andone or more dispersion management apparatus configured to remove a signal distortion component caused by an interaction between a chirp and chromatic dispersion by compensating for the chromatic dispersion before the plurality of RUs receives the optical signal that is transmitted from the DU pool.2. The analog optical transmission system of claim 1 , wherein there is one dispersion management apparatus claim 1 , which is positioned after the DU pool and configured to compensate for chromatic dispersion of the optical signal transmitted from the DU pool and then transmit the compensated optical signal to the plurality of RUs over fronthaul links.3. The analog optical transmission system of claim 1 , wherein there are a plurality of dispersion management apparatuses claim 1 , each of which is positioned before each of the plurality of RUs and configured to compensate for chromatic dispersion of optical signals transmitted over fronthaul links and then transmit the compensated optical signals to the plurality of RUs corresponding one-to-one to each of the plurality of dispersion management apparatuses.4. The analog optical transmission system of claim 1 , wherein there ...

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Номер записи: 86
08-08-2019 дата публикации

METHOD AND APPARATUS FOR VIDEO ENCODING AND VIDEO DECODING BASED ON NEURAL NETWORK

Номер: US20190246102A1
Автор: CHO Seung-Hyun, CHOI Jin-Soo, Jeong Se-Yoon, KANG Je-Won, KIM Hui-Yong, Kim Jong-ho, Kim Na-Young, KIM Youn-Hee, LEE Dae-Yeol, Lee Joo-Young, LIM Woong, SEOK Jin-Wuk
Принадлежит: Electronics and Telecommunications Research Institute

Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. A virtual frame is generated by a video generation network including a generation encoder and a generation decoder. The virtual frame is used as a reference frame in inter prediction for a target. Further, a video generation network for inter prediction may be selected from among multiple video generation networks, and inter prediction that uses the selected video generation network may be performed. 1. A video processing method , comprising:generating a feature vector of a target frame;generating a residual frame;generating a feature vector of the residual frame;generating a predicted feature vector for the residual frame using the feature vector of the residual frame; andgenerating a prediction frame using a sum of the predicted feature vector and the feature vector of the target frame.2. The video processing method of claim 1 , wherein the feature vector of the target frame is generated by a first convolutional neural network.3. The video processing method of claim 1 , wherein the residual frame is acquired through motion prediction that uses a motion vector of the target frame.4. The video processing method of claim 1 , wherein the feature vector of the residual frame is generated by a second convolutional neural network.5. The video processing method of claim 1 , wherein the predicted feature vector for the residual frame is generated by a convolution Long Short Term Memory (LSTM) neural network.6. The video processing method of claim 1 , wherein the prediction frame is generated by a deconvolutional neural network.7. A prediction method claim 1 , comprising:generating a virtual frame, andperforming inter prediction that uses the virtual frame,wherein the virtual frame is generated using a neural network to which a previously decoded frame is input.8. The prediction method of claim 7 , wherein the virtual frame is generated based on the previously decoded frame ...

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Номер записи: 87
08-08-2019 дата публикации

METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE, AND RECORDING MEDIUM FOR STORING BITSTREAM

Номер: US20190246103A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

An image encoding method and an image decoding method are provided. The image decoding method includes deriving a temporal merge candidate from a co-located block of a current block, generating a merge candidate list of the current block based on the derived temporal merge candidate, and generating a prediction block of the current block based on the generated merge candidate list. The deriving a temporal merge candidate includes scaling a motion vector derived from the co-located block based on a POC difference value between the current block and a reference picture of the current block and a POC difference value between the co-located block and a reference picture of the co-located block, and modifying the scaled motion vector based on motion vector scaling information between a neighboring block of the current block and a co-located block of the neighboring block. 1. A method for decoding an image , the method comprising:deriving a temporal merge candidate from a co-located block of a current block;generating a merge candidate list of the current block based on the derived temporal merge candidate; andgenerating a prediction block of the current block based on the generated merge candidate list,wherein the deriving a temporal merge candidate comprises:scaling a motion vector derived from the co-located block based on a POC (Picture Order Count) difference value between the current block and a reference picture of the current block and a POC difference value between the co-located block and a reference picture of the co-located block; andmodifying the scaled motion vector based on motion vector scaling information between neighboring blocks of the current block and co-located blocks of the neighboring blocks.2. The image decoding method according to claim 1 , wherein the deriving a temporal merge candidate further comprises:scaling a motion vector derived from the co-located block of the neighboring block, based on a POC difference value between the neighboring ...

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Номер записи: 88
07-10-2021 дата публикации

Semiconductor device including stack structure and trenches

Номер: US20210313352A1
Автор: Ji Hwan Yu, Jong Soo Kim, Kwang Ho Lee, Seung Hyun Cho
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A semiconductor device includes a plurality of blocks on a substrate. Trenches are disposed between the plurality of blocks. Conductive patterns are formed inside the trenches. A lower end of an outermost trench among the trenches is firmed at a level higher than a level of a lower end of the trench adjacent to the outermost trench. Each of the blocks includes insulating layers and gate electrodes, which are alternately and repeatedly stacked. Pillars pass through the insulating layers and the gate electrodes along a direction orthogonal to an upper surface of the substrate.

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Номер записи: 89
18-12-2014 дата публикации

DISPLAY APPARATUS AND TOUCH PANEL

Номер: US20140368624A1
Автор: Cho Hyun-Seung, HWANG Seon-deok, Kang Ki-hyung, MOON Soo-bae, Na In-Hak, Yoon Jung-hoon
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A display apparatus includes a display panel configured to display an image frame that includes a right-eye image and a left-eye image, and a touch panel configured to sense a user touch, wherein the touch panel includes a polarizing switch panel configured to switch a direction of polarization of light emitted from the display panel, and a parallax realization layer which is formed on one side of the polarizing switch panel and is configured to provide a binocular disparity image by using light emitted from the polarizing switch panel. 1. A display apparatus comprising:a display panel configured to display an image frame that compries a right-eye image and a left-eye image; anda touch panel configured to sense a user touch, a polarizing switch panel configured to switch a direction of polarization of light emitted from the display panel; and', 'a parallax realization layer which is formed on one side of the polarizing switch panel and provides a binocular disparity image by using light emitted from the polarizing switch panel., 'wherein the touch panel comprises2. The display apparatus of claim 1 , further comprising:a video processor configured to generate an image frame by combining a right-eye image and a left-eye image.3. The display apparatus of claim 1 , {'br': None, 'i': L', 'L', 'RP*OV−P', 'P, '2=3*(2)/2,'}, 'wherein a thickness of the parallax realization layer is determined bywhere L2 indicates a length between the display panel and the parallax realization layer, L3 indicates a distance for forming a 3D image, RP indicates a rendering pitch, OV indicates an object view, and P2 indicates a barrier or a lens pitch.4. The display apparatus of claim 1 ,wherein the touch panel is a glass-glass (GG) type touch panel comprising a glass layer and a tempered glass layer that are sequentially-layered,wherein the polarizing switch panel and the parallax realization layer are embedded in the glass layer or the tempered glass layer.5. The display apparatus of claim 1 ...

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Номер записи: 90
29-09-2016 дата публикации

APPARATUSES AND METHODS FOR TRANSMITTING AND RECEIVING CONTROL SIGNAL IN ANALOG RADIO-OVER-FIBER (ROF)-BASED MOBILE FRONTHAUL

Номер: US20160285553A1
Автор: CHO Seung Hyun, CHUNG Hwan Seok, HAN Chan Gyo, LEE Jong Hyun
Принадлежит:

An apparatus for transmitting a control signal in a radio-over-fiber (RoF)-based mobile fronthaul includes: a data channel transmitter configured to generate a data signal at a preassigned frequency or wavelength; a control channel transmitter configured to generate a control signal at a designated frequency or wavelength that is shared with other apparatuses; and a combiner configured to combine the data signal with the control signal. 1. An apparatus for transmitting a control signal in an analog radio-over-fiber (RoF)-based mobile fronthaul , the apparatus comprising:a data channel transmitter configured to generate a data signal at a preassigned frequency or wavelength;a control channel transmitter configured to generate a control signal at a designated frequency or wavelength that is shared with other apparatuses; anda combiner configured to combine the data signal with the control signal.2. The apparatus of claim 1 , further comprising: a directly demodulated light source to optically modulate a signal output from the combiner claim 1 ,wherein the combiner receives signals from the data channel transmitter and the control channel transmitter, combines the received signals in frequency domain, and outputs a resultant signal to the directly modulated light source.3. The apparatus of claim 2 , wherein the control channel transmitter comprises a control signal generator configured to generate the control signal in a serial binary format claim 2 , a multi-level modulator configured to convert the control signal with a serial binary format into a multi-level modulated signal claim 2 , and an electrical modulator configured to load the multi-level modulated signal on a designated intermediate frequency.4. The apparatus of claim 2 , wherein the control channel transmitter comprises a control signal generator configured to generate the control signal as a digital baseband signal with a serial binary format.5. The apparatus of claim 2 , wherein the data channel ...

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Номер записи: 91
29-08-2019 дата публикации

METHOD AND DEVICE FOR FILTERING

Номер: US20190268594A1
Автор: CHO Seung-Hyun, CHOI Jin-Soo, CHOI Jun-Woo, JUN Dong-San, Kang Jung-Won, KIM Hui-Yong, KIM Myung-Jun, KIM Nam-Uk, KO Hyunsuk, LEE Ha-Hyun, Lee Jin-Ho, LEE Yung-Lyul, LIM Sung-Chang
Принадлежит:

Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus, and more particularly, a method and apparatus for performing filtering in video encoding and decoding. An encoding apparatus may perform filtering on a target, and may generate filtering information indicating whether filtering has been performed on the target. Further, the encoding apparatus may generate a bitstream including filtering information. A decoding apparatus may determine, based on filtering information, whether to perform filtering on a target, and may perform filtering on the target. The decoding apparatus may receive filtering information from the encoding apparatus through a bitstream or may derive filtering information using additional information. 1. An encoding apparatus , comprising:a processing unit for performing filtering on a target, generating filtering information that indicates whether filtering has been performed on the target, and generating a bitstream including the filtering information; anda communication unit for transmitting the bitstream to a decoding apparatus.2. A decoding apparatus , comprising:a communication unit for receiving a bitstream; anda processing unit for acquiring filtering information from the bitstream, determining, based on the filtering information, whether to perform filtering on a target, and then performing filtering on the target.3. A decoding method , comprising:determining whether to perform filtering on a target; andperforming filtering on the target if it is determined that filtering is to be performed on the target.4. The decoding method of claim 3 , further comprising:receiving a bitstream; andacquiring filtering information from the bitstream,wherein whether to perform filtering on the target is determined based on the filtering information.5. The decoding method of claim 3 , further comprising:deriving filtering information,wherein whether to perform filtering on the target is determined based on the ...

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Номер записи: 92
20-08-2020 дата публикации

IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM HAVING BITSTREAM STORED THEREON

Номер: US20200267408A1
Автор: CHO Seung Hyun, Choi Jin Soo, JUN Dong San, Kang Jung Won, Kim Hui Yong, KO Hyun Suk, Lee Ha Hyun, Lee Jin Ho, Lim Sung Chang
Принадлежит: Electronics and Telecommunications Research Institute

The present invention relates to a method for encoding and decoding an image. The method for decoding an image includes: deriving an initial motion vector from a merge candidate list of a current block; deriving a refined motion vector using the initial motion vector; and generating a prediction block of the current block using the refined motion vector. 1. A method for decoding an image , the method comprising:deriving an initial motion vector from a merge candidate list of a current block;deriving a refined motion vector using the initial motion vector: andgenerating a prediction block of the current block using the refined motion vector,wherein the initial motion vector is derived from a merge candidate indicated by initial motion vector index information.2. The method of claim 1 , wherein the deriving of the initial motion vector comprises claim 1 , deriving a motion vector of a merge candidate corresponding to a predetermined number of the merge candidate list as the initial motion vector claim 1 , in response to the initial motion vecotr index information not being decoded.3. The method of claim 2 , wherein the merge candidate corresponding to the predetermined number is the hrst merge candidate of the merge candidate list.4. The method of claim 1 , wherein the deriving of the refined motion vector comprises deriving a motion vector indicating a pixel in a predetermined reason of a reference picture as the refined motion vector.5. The method of claim 4 , wherein the predetermined region is determined as an area centered on a pixel position of the reference picture indicated by the initial motion vector claim 4 , the area having at least one of cross claim 4 , square claim 4 , diamond claim 4 , and hexagon shapes.641. The method of claim claim 4 , further comprising:obtaining merge mode usage information; andobtaining merge mode based motion vector refine usage information based on the merge mode usage information.710.-. (canceled)11. A method for encoding an ...

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Номер записи: 93
25-12-2014 дата публикации

ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE

Номер: US20140374719A1
Автор: CHO Seung Hyun, Kim Sung Chul, LEE Byoung June, YANG Mi Youn
Принадлежит:

An OLED display device with a passivation film formed between a sealing member and a pad portion through a structural alteration of the sealing member and first and second protective layers prevents deterioration of image quality and a driving faults caused by short circuits and electro-static discharge. 1. An organic light emitting diode display device comprising:a substrate including a display area and a non-display area surrounding the display area;an organic light emission layer on the display area;a pad portion on the non-display area;a first protective layer covering the organic light emission layer;a second protective layer covering the first protective layer;a metal cap on the second protective layer; anda photoresist layer on the metal cap.2. The organic light emitting diode display device of claim 1 , wherein the photoresist layer covers an upper surface claim 1 , a side surface claim 1 , and edges of a rear surface of the metal cap.3. The organic light emitting diode display device of claim 1 , further comprising a flexible printed circuit cable on an upper surface of the photoresist layer and connected to the pad portion.4. The organic light emitting diode display device of claim 1 , wherein the non-display area includes a first domain surrounding the display area claim 1 , a second domain surrounding the first domain claim 1 , a third domain surrounding the second domain claim 1 , and a fourth domain surrounding the third domain claim 1 , andwherein the first protective layer overlaps the first domain, the second protective layer overlaps the second domain, the metal cap is overlaps the second domain, and the pad portion is disposed in the fourth domain.5. The organic light emitting diode display device of claim 1 , wherein the non-display area includes a first domain surrounding the display area claim 1 , a second domain surrounding the first domain claim 1 , a third domain surrounding the second domain claim 1 , and a fourth domain surrounding the ...

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Номер записи: 94
22-10-2015 дата публикации

GLASSLESS MULTI-VIEW DISPLAY APPARATUS AND CONTROL METHOD THEREOF

Номер: US20150301350A1
Автор: Cho Hyun-Seung, HWANG Seon-deok, Yoon Jung-hoon
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A display apparatus is provided. The display apparatus includes a display panel comprising a plurality of pixels including a plurality of sub-pixels, and arranges and displays a multi-view image in an arrangement pattern. The display panel includes a polarizing film disposed on a back surface of the display panel and which transmits, to the display panel, light having a first polarization direction to an area corresponding to a first part of each of the sub-pixels, and light having a second polarization direction to an area corresponding to a second part of the sub-pixels. a polarizing panel disposed on a back surface of the polarizing film and configured to adjusts the first and second polarization directions of the light transmitted by the polarizing film, and a controller configured to control a driving state of the polarizing panel to sequentially provide the first and second polarization directions for one image frame section. 1. A display apparatus comprising:a display panel comprising a plurality of pixels, and configured to arrange and display a multi-view image in an arrangement pattern, each of the plurality of pixels including a plurality of sub-pixels;a polarizing film disposed on a back surface of the display panel and configured to transmit, to the display panel, light having a first polarization direction to an area corresponding to a first part of each of the sub-pixels, and light having a second polarization direction to an area corresponding to a second part of each of the sub-pixels;a polarizing panel disposed on a back surface of the polarizing film and configured to adjust the first polarization direction and the second polarization direction of light transmitted by the polarizing film; anda controller configured to control a driving state of the polarizing panel to sequentially provide the first polarization direction and the second polarization direction for one image frame section.2. The display apparatus of claim 1 , wherein:the polarizing ...

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Номер записи: 95
11-10-2018 дата публикации

ELECTRONIC DEVICE AND UI PROVIDING METHOD THEREFOR

Номер: US20180292962A1
Автор: CHO Seung-Hyun, CHOI Yu-ri, KIM Dong-seok, KO Se-rin, Lee Jeong-Pyo, Park Hee-Sung
Принадлежит:

Disclosed is an electronic device. The present electronic device comprises a display, and a processor configured to display, through the display, a UI based on use patterns of a plurality of devices connected to a same network, wherein the UI comprises a device axis and a time axis, and provides information related to use of at least one device in a region where the device axis and the time axis intersect each other. 1. An electronic device comprising:a display; anda processor configured to display, through the display, a UI based on use patterns of a plurality of devices connected to a same network, wherein the UI comprises a device axis and a time axis, and provides information related to use of at least one device in a region where the device axis and the time axis intersect each other.2. The electronic device of claim 1 , wherein the information related to the use of the at least one device comprises at least one of information indicating whether an operation state of the at least one device is changed claim 1 , and detailed information regarding an operation state of the at least one device.3. The electronic device of claim 1 , wherein the processor is configured to group a plurality of devices belonging to a first time section of the time axis on the UI claim 1 , based on operation states of the plurality of devices claim 1 , and to provide the group claim 1 , and claim 1 , in response to the first time section coming claim 1 , the processor is configured to control the grouped plurality of devices simultaneously.4. The electronic device of claim 3 , wherein the processor is configured to display a GUI for visually feeding back information indicating that the grouped plurality of devices are grouped claim 3 , andwherein, in response to a user interaction of dragging the GUI and dropping the GUI into a second time section being inputted, the processor is configured to control the grouped plurality of devices to operate in the same operation states in the second ...

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Номер записи: 96
26-09-2019 дата публикации

Image encoding/decoding method and recording medium therefor

Номер: US20190297325A1
Автор: Dong San Jun, Ha Hyun Lee, Hui Yong Kim, Hyun Suk Ko, Jin Ho Lee, Jin Soo Choi, Jung Won Kang, Seung Hyun Cho, Sung Chang Lim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

The present invention relates to a video encoding and decoding method. A video decoding method for the same may include: obtaining granularity information; determining a sharing region based on the granularity information; and generating a prediction block of a current block by using motion information of the sharing region when the current block corresponds to the sharing region.

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Номер записи: 97
12-11-2015 дата публикации

APPARATUS AND METHOD FOR MEASURING NONLINEAR PARAMETERS

Номер: US20150323505A1
Автор: CHO Seung Hyun, Lee Seung Seok, Park Choon Su, Seo Dae Cheol, Seong Young Min
Принадлежит: Korea Research Institute of Standards and Science

The present invention relates to a technology for measuring a nonlinear parameter of an object to be measured, and more particularly, to an apparatus and method for measuring a nonlinear parameter of an object to be measured. 1. A nonlinear parameter measurement apparatus for measuring a nonlinear parameter of an object to be measured using an ultrasonic signal , the nonlinear parameter measurement apparatus comprising:an ultrasonic buffer section connected to one side of the object to be measured to input an ultrasonic signal to the object to be measured;an ultrasonic generation section generating the ultrasonic signal by generation of a tone-bust;a probe connected to the ultrasonic buffer section such that the ultrasonic signal generated by the ultrasonic generation section is incident on the ultrasonic buffer section;an input ultrasonic signal measurement section measuring the ultrasonic signal incident on the object to be measured by irradiating the ultrasonic buffer section with laser;an output ultrasonic signal measurement section measuring an ultrasonic signal output from the object to be measured by irradiating the other side of the object to be measured with laser; anda nonlinear parameter calculation section calculating the nonlinear parameter of the object to be measured, based on the ultrasonic signals measured by the input ultrasonic signal measurement section and the output ultrasonic signal measurement section.2. The nonlinear parameter measurement apparatus according to claim 1 , wherein the ultrasonic signal is incident as a plane wave on the object to be measured by the ultrasonic buffer section claim 1 , and the ultrasonic buffer section transmits the laser emitted from the input ultrasonic signal measurement section.3. The nonlinear parameter measurement apparatus according to claim 2 , wherein the ultrasonic signal and the laser emitted from the input ultrasonic signal measurement section are vertically incident on an incident surface of the ...

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Номер записи: 98
12-11-2015 дата публикации

OPTICAL TRANSMISSION AND RECEPTION APPARATUS AND METHOD FOR UPLINK TRANSMISSION IN ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS-PASSIVE OPTICAL NETWORK (OFDMA-PON)

Номер: US20150326321A1
Автор: CHO Seung Hyun, DOO Kyeong Hwan, Kang Hun Sik, LEE Jie Hyun
Принадлежит:

Provided is an optical transmission apparatus and method for uplink transmission in an orthogonal frequency division multiple access-passive optical network (OFDMA-PON), wherein the optical transmission apparatus includes a digital signal processor to output a baseband orthogonal frequency division multiplexing (OFDM) signal, a tone generator to generate a dithering tone, a synthesizer to synthesize the dithering tone and the baseband OFDM signal, and an optical source to output an output light in which a spectrum width is increased to be greater than a spectrum width of a carrier light based on the baseband OFMD signal synthesized with the dithering tone. 1. An optical transmission apparatus configured to output an output light by modulating a carrier light based on a baseband orthogonal frequency division multiplexing (OFDM) signal , and increase a spectrum width of the carrier light or a spectrum width of the output light.2. The apparatus of claim 1 , comprising:a digital signal processor configured to output the baseband OFDM signal;a tone generator configured to generate a dithering tone;a synthesizer configured to synthesize the dithering tone and the baseband OFDM signal; andan optical source configured to output the output light in which the spectrum width is increased to be greater than the spectrum width of the carrier light based on the baseband OFDM signal synthesized with the dithering tone.3. The apparatus of claim 2 , wherein a frequency of the dithering tone is greater than an overall bandwidth of the baseband OFDM signal and smaller than a modulation bandwidth of the optical source.4. The apparatus of claim 2 , wherein the optical source is configured to generate the output light by generating the carrier light based on a wavelength or a frequency band pre-allocated to the optical transmission apparatus claim 2 , increasing the spectrum width of the carrier light using the dithering tone claim 2 , and modulating the carrier light in which the ...

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Номер записи: 99
24-09-2020 дата публикации

SEMICONDUCTOR DEVICE INCLUDING STACK STRUCTURE AND TRENCHES

Номер: US20200303412A1
Автор: CHO Seung Hyun, Kim Jong Soo, Lee Kwang Ho, YU Ji Hwan
Принадлежит:

A semiconductor device includes a plurality of blocks on a substrate. Trenches are disposed between the plurality of blocks. Conductive patterns are formed inside the trenches. A lower end of an outermost trench among the trenches is formed at a level higher than a level of a lower end of the trench adjacent to the outermost trench. Each of the blocks includes insulating layers and gate electrodes, which are alternately and repeatedly stacked. Pillars pass through the insulating layers and the gate electrodes along a direction orthogonal to an upper surface of the substrate. 1. A semiconductor device comprising:a plurality of blocks on a substrate;a plurality of trenches between the plurality of blocks, the plurality of trenches includes a first trench disposed on the outermost side and a second trench adjacent to the first trench, a lowermost end of the first trench is formed at a level higher than a level of a lowermost end of the second trench; anda plurality of conductive patterns formed inside the plurality of trenches, the plurality of conductive patterns includes a first conductive pattern inside the first trench and a second conductive pattern inside the second trench,wherein the first conductive pattern is insulated from the substrate, the second conductive pattern is connected to the substrate, andeach of the blocks includes insulating layers and gate electrodes, which are alternately and repeatedly stacked, and pillars passing through the insulating layers and the gate electrodes.2. The semiconductor device of claim 1 , wherein the second trench is immediately adjacent to the first trench.3. The semiconductor device of claim 1 , wherein at least one of the insulating layers is disposed between the substrate and a lowermost end of the first conductive pattern.4. The semiconductor device of claim 1 , wherein the second conductive pattern is in contact with the substrate.5. The semiconductor device of claim 1 , wherein a lowermost end of the second ...

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