Patents Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTIT
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Publication number: 20180299621Abstract: The present invention relates to an optical combiner and a manufacturing method thereof, and a plurality of light source units emitting an optical signal. A reflection unit having a plurality of reflection surfaces disposed on a path of the optical signal and reflecting the optical signal so as to face toward an optical fiber, and an optical fiber holder fixing the optical fiber at a position where the optical signal reflected by the plurality of reflection surfaces is focused is included. An optical combiner and a manufacturing method thereof in which an optical fiber holder includes a plurality of division members that are radially disposed with respect to a center part of the reflection unit are disclosed.Type: ApplicationFiled: November 28, 2017Publication date: October 18, 2018Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTIT UTEInventors: CHAN IL YEO, Young Soon HEO, Hyun Seo KANG, Sung Chang KIM
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Publication number: 20180286252Abstract: Disclosed are a method and system for operating an unmanned delivery device. One embodiment of the method includes setting at least one sampling section with respect to a travel path to a destination of at least one delivery item, determining a type of the sampling section based on location information and altitude information of the sampling section, setting a traveling range including the at least one sampling section based on the type of the sampling section, generating route information including the at least one traveling range, and providing the route information to the unmanned delivery device.Type: ApplicationFiled: March 28, 2018Publication date: October 4, 2018Applicant: Electronics and Telecommunications Research Instit uteInventor: Moon Sung PARK
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Publication number: 20180270885Abstract: A method and an apparatus for communication between peer devices in which a cyclic-superframe including a plurality of superframes is used are provided. The method may include: receiving a discovery request command frame including information about a first cyclic-superframe for a peering period at an active contention access period (CAP) of the plurality of superframes; transmitting, to a peer device that has transmitted the discovery request command frame, a discovery response command frame corresponding to the discovery request command frame; and performing the peering period with the peer device based on the first cyclic-superframe.Type: ApplicationFiled: March 20, 2018Publication date: September 20, 2018Applicant: Electronics and Telecommunications Research Instit uteInventors: Seong-Soon JOO, Nae-Soo KIM, Cheol Sig PYO
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Publication number: 20180246263Abstract: Provided is photochromic glass. The photochromic glass includes a photochromic layer having visible-light transmittance decreased at short-wavelength light and having visible-light transmittance increased at long-wavelength light, a short-wavelength transmission layer provided on a surface of the photochromic layer to transmit only the short-wavelength light among lights entering the photochromic layer, and a wavelength conversion layer provided on another surface of the photochromic layer opposite to the surface to convert a wavelength of light entering the photochromic layer into a long wavelength, or a long-wavelength transmission layer transmitting only the long-wavelength among lights entering the photochromic layer. The visible-light transmittance of the photochromic layer may adjust on both surfaces of the photochromic layer through the incident direction of light.Type: ApplicationFiled: April 27, 2018Publication date: August 30, 2018Applicant: Electronics and Telecommunications Research Instit uteInventor: Jungwook LIM
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Publication number: 20180241497Abstract: Provided are a technique for providing focused Bessel beams having orbital angular momentum (OAM) to a plane to solve a problem of the related art in which Laguerre-Gaussian (LG) beams having OAM and used for multiplexing of a microwave transmission system are dispersed, and an electromagnetic wave generation apparatus and method for implementing the technique.Type: ApplicationFiled: February 22, 2018Publication date: August 23, 2018Applicant: Electronics and Telecommunications Research Instit uteInventors: Ju Yeon HONG, Myung Sun SONG, Wang Joo LEE
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Publication number: 20180235112Abstract: Disclosed is a magnetic field shielding apparatus including an energy transmitter configured to generate a magnetic field, an energy receiver configured to receive the magnetic field generated by the energy transmitter, and a magnetic shield configured to shield a leaked magnetic field that is not received by the energy receiver, the magnetic shield including at least one closed region through which the leaked magnetic field passes, and at least one open region including a protrusion through which the leaked magnetic field moves to an inside of the magnetic field shielding apparatus after absorbed into the closed region.Type: ApplicationFiled: May 19, 2017Publication date: August 16, 2018Applicant: Electronics and Telecommunications Research Instit InstituteInventors: Byung Chan KIM, Sang-Won KIM, Seong-Min KIM, Jung Ick MOON, Sang Bong JEON, In Kui CHO, Hyung Do CHOI
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Publication number: 20180227928Abstract: Disclosed are a communication method and a communication apparatus using multiple antennas in a wireless communication system. A communication method of a receiver comprises receiving reference signals from a transmitter of the communication system through beams to which the hybrid beamforming is applied; selecting at least one analog beam having a quality equal to or higher than a preset threshold value among analog beams belonging to the beams, based on the reference signals; and selecting at least one digital beam corresponding to the at least one analog beam and having a quality equal to or higher than the preset threshold value among digital beams belonging to the beams, based on the reference signals. Thus, performance of the communication system can be improved.Type: ApplicationFiled: January 22, 2018Publication date: August 9, 2018Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTIT UTEInventors: Eun Kyung KIM, Young Jo KO, Seok Ki KIM, Won Ik KIM, Seung Kwon BAEK
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Publication number: 20180213238Abstract: A method of decoding a image according to an embodiment of the present invention, which supports a plurality of layers, may comprise the steps of: receiving information on a reference layer used to decode a current picture for inter-layer prediction; inducing the number of valid reference layer pictures used to decode the current picture on the basis of the information on the reference layer; and performing inter-layer prediction on the basis of the number of valid reference layer pictures.Type: ApplicationFiled: March 22, 2018Publication date: July 26, 2018Applicant: Electronics and Telecommunications Research Instit uteInventors: Ha Hyun Lee, Jung Won Kang, Jin Ho Lee, Jin Soo Choi, Jin Woong Kim
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Publication number: 20180213547Abstract: An operation method of a base station in an IFD scheme may comprise receiving position information of each of a plurality of downlink (DL) terminals and a plurality of uplink (UL) terminals; determining a guard zone corresponding to each of the plurality of DL terminals based on the position information of each of the plurality of DL terminals; determining whether at least one UL terminal is located in the guard zone based on the position information of each of the plurality of UL terminals; determining a scheduling priority of each of the plurality of DL terminals according to whether at least one UL terminal is located in the guard zone; generating DL control information including frequency-time resource allocation information and interference control information based on the determined scheduling priority; and transmitting data signals and the DL control information to the plurality of DL terminals.Type: ApplicationFiled: January 12, 2018Publication date: July 26, 2018Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTIT UTEInventors: Hyung Sik JU, Dong Hyuk GWAK, Seon Ae KIM, Yu Ro LEE
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Publication number: 20180199118Abstract: A photonic frame switching system may include a main controller and at least one photonic frame wrapper line card. The main controller may determine a point in time at which a photonic frame wrapper line card transmits a photonic frame by allocating a time slot to the photonic frame wrapper line card. When the photonic frame switching system includes a plurality of photonic frame wrapper line cards, points in times at which the plurality of photonic frame wrapper line cards transmits the photonic frames may be synchronized. In particular, when a portion of the plurality of photonic frame wrapper line cards transmit a plurality of photonic frames having different destinations, points in times at to which all of the plurality of photonic frame wrapper line cards transmits the photonic frames may be adjusted based on a latency by a destination change.Type: ApplicationFiled: July 24, 2017Publication date: July 12, 2018Applicant: Electronics and Telecommunications Research Instit uteInventors: YongWook RA, Yunjoo KIM
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Publication number: 20180197320Abstract: Disclosed is an apparatus and method for processing information of multiple cameras.Type: ApplicationFiled: January 11, 2018Publication date: July 12, 2018Applicant: Electronics and Telecommunications Research Instit uteInventors: Seong Yong LIM, Yong Ju CHO, Jeong Il SEO, Joo Myoung SEOK
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Publication number: 20180191037Abstract: Provided is a battery module and an electronic device, the battery module including a first battery, a second battery, a correcting element unit, and a battery controller, wherein the first battery includes a first internal resistance and provides a first current, the second battery is connected to the first battery, includes a second internal resistance and provides a second current, the correction element unit is connected to the first battery or the second battery and includes a variable resistor or a current source, the battery controller controls the correction element unit such that the first current is identical to the second current on a basis of a difference between values of the first internal resistance and the second internal resistance, and therefore performances of the first battery and the second battery are prevented from being deteriorated.Type: ApplicationFiled: September 22, 2017Publication date: July 5, 2018Applicant: Electronics and Telecommunications Research Instit uteInventors: Jimin OH, Jung Hee SUK, Yil Suk YANG, Jong Pil IM
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Publication number: 20180160131Abstract: Disclosed are a method and an apparatus for image encoding/decoding that support a plurality of layers. The method for image decoding that supports a plurality of layers includes decoding information of a first layer which a picture of a second layer including a current decoding target block refers to; mapping the information of the first layer to a picture size of the second layer, configuring a reference picture list for the picture of the second layer by adding the mapped information of the first layer and generating prediction samples of the current decoding target block by predicting the current decoding target block of the second layer based on the reference picture list, and the information of the first layer includes at least one of a sample value and motion information of the first layer picture.Type: ApplicationFiled: January 19, 2018Publication date: June 7, 2018Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTIT UTEInventors: Ha Hyun LEE, Jung Won KANG, Jin Ho LEE, Jin Soo CHOI, Jin Woong KIM
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Publication number: 20180136645Abstract: A channel access method in an unmanned aerial vehicle (UAV) control and non-payload communication (CNPC) system is provided. The channel access method may include setting an uplink frequency and a downlink frequency to each of a ground station and an airborne radio station, and performing, by the ground station and the airborne radio station, an initial access using the uplink frequency or the downlink frequency.Type: ApplicationFiled: May 31, 2017Publication date: May 17, 2018Applicant: Electronics and Telecommunications Research Instit uteInventors: Tae Chul HONG, Hee Wook KIM, Kwang Jae LIM
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Publication number: 20180139711Abstract: Disclosed is a network synchronization apparatus and method of a time division multiple access (TDMA)-based mesh network satellite communication system, the network synchronization method of a terminal in a satellite communication system including receiving timing error information from a central station, generating a mesh superframe start time (SST?) by reversing a sign of the timing error information, and receiving traffic information transmitted by a transmission terminal using the mesh SST?.Type: ApplicationFiled: November 16, 2017Publication date: May 17, 2018Applicant: Electronics and Telecommunications Research Instit uteInventors: Joon Gyu RYU, Soo Yeob JUNG, Deock Gil OH, Jonggyu OH
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Publication number: 20180120507Abstract: Provided is a device and method for detecting an optical signal. The optical signal detecting device may include an optical de-multiplexer configured to de-multiplex an input optical signal to optical signals of different wavelengths; an optical coupling lens configured to allow the optical signals of different wavelengths to be incident; an optical signal reflector configured to reflect the optical signals of different wavelengths emitted from the optical couple lens; and an optical detector configured to detect the reflected optical signals of different wavelengths.Type: ApplicationFiled: October 24, 2017Publication date: May 3, 2018Applicant: Electronics and Telecommunications Research Instit uteInventors: Sae-Kyoung KANG, Joon Ki LEE, Jie Hyun LEE, Joon Young HUH
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Publication number: 20180124859Abstract: An operation method of a first communication node, which controls a plurality of communication nodes included in a mobile xhaul network supporting mobility, may comprise performing an attach procedure between the first communication node and a second communication node among the plurality of communication nodes; configuring a path for communications between the second communication node and a third communication node for which attach procedure has been completed among the plurality of communication nodes; and supporting communications of the second communication node and the third communication node using the configured path.Type: ApplicationFiled: November 1, 2017Publication date: May 3, 2018Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTIT UTEInventors: Seung Kwon CHO, Seok Ki KIM, Won Ik KIM, Eun Kyung KIM, Jae Heung KIM, Jae Su SONG, Sung Pil SHIN, Sei Yun SHIN, Mi Young YUN, Soo Jung JUNG, Yun Hee CHO, Tae Joong KIM, Seung Kwon BAEK
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Publication number: 20180123211Abstract: Disclosed is a radio frequency low-loss power divider/combiner and power amplifier including the same, the power divider/combiner including a waveguide and a converter configured to convert an input signal received from an input signal terminal into a plurality of output signals and output the plurality of output signals to a plurality of output signal terminals corresponding to the plurality of output signals through the waveguide, wherein the waveguide includes the converter.Type: ApplicationFiled: May 2, 2017Publication date: May 3, 2018Applicant: Electronics and Telecommunications Research Instit uteInventors: Dong Pil CHANG, Hongyeol LEE, Changsoo KWAK, Dong Hwan SHIN, In Bok YOM, Jin Cheol JEONG
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Publication number: 20180109786Abstract: The present invention relates to a method and apparatus for setting a reference picture index of a temporal merging candidate. An inter-picture prediction method using a temporal merging candidate can include the steps of: determining a reference picture index for a current block; and inducing a temporal merging candidate block of the current block and calculating a temporal merging candidate from the temporal merging candidate block, wherein the reference picture index of the temporal merging candidate can be calculated regardless of whether a block other than the current block is decoded. Accordingly, a video processing speed can be increased and video processing complexity can be reduced.Type: ApplicationFiled: December 18, 2017Publication date: April 19, 2018Applicants: Electronics and Telecommunications Research Instit ute, University-Industry Cooperation Group of Kyung Hee UniversityInventors: Hui Yong KIM, Gwang Hoon PARK, Kyung Yong KIM, Sang Min KIM, Sung Chang LIM, Jin Ho LEE, Jin Soo CHOI, Jin Woong KIM
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Publication number: 20180083608Abstract: A voltage comparator comparing a voltage of a first input signal and a voltage of a second input signal is provided. The voltage comparator includes: a first switch pair transmitting, respectively, the first input signal and the second input signal to a control terminal of a first transistor and a control terminal of a second transistor in response to a clock signal; a second switch pair connecting a first terminal and a second terminal of the first transistor and connecting a first terminal and a second terminal of the second transistor in response to at least one of the clock signal and a reset signal; and a first reset switch connecting the control terminal of the first transistor and the control terminal of the second transistor in response to the reset signal.Type: ApplicationFiled: June 14, 2017Publication date: March 22, 2018Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTIT UTEInventors: Young Kyun CHO, Cheol Ho KIM, Bong Hyuk PARK, Kwangchun LEE, Jae Ho JUNG, Seok Bong HYUN