Patents Assigned to Electronics and Telecommuncations Research Institute
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Patent number: 10827177Abstract: A method and a device for encoding/decoding images are disclosed. The method for encoding images comprises the steps of: deriving a scan type of a residual signal for a current block according to whether or not the current block is a transform skip block; and applying the scan type to the residual signal for the current block, wherein the transform skip block is a block to which transform for the current block is not applied and is specified on the basis of information indicating whether or not transform for the current block is to be applied.Type: GrantFiled: May 16, 2019Date of Patent: November 3, 2020Assignees: Electronics and Telecommuncations Research Institute, UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITYInventors: Hui Yong Kim, Sung Chang Lim, Jin Ho Lee, Jin Soo Choi, Jin Woong Kim, Gwang Hoon Park, Kyung Yong Kim
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Patent number: 10809457Abstract: Provided is an optical circuit element, and more particularly, is an optical circuit element that splits one optical signal into two polarization signals, or couples two polarization signals into one optical signal. The optical circuit element includes a plurality of input couplers to which an optical signal is input, a plurality of output couplers from which an optical signal is output, a first path and a second path configured to connect the input couplers and the second couplers to each other, and at least one wave plate.Type: GrantFiled: April 2, 2019Date of Patent: October 20, 2020Assignee: Electronics and Telecommuncations Research InstituteInventors: Seo Young Lee, Young-Tak Han
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Patent number: 10805208Abstract: Disclosed herein is an apparatus for supporting setting of a network routing path, which includes a sub-cast list management unit for managing a sub-cast list that contains information about one or more other apparatuses for supporting setting of a network routing path with which the apparatus establishes a network session; a session management unit for simultaneously transmitting a SYNC message to at least some of the apparatuses included in the sub-cast list and establishing a network session with one of the apparatuses included in the sub-cast list in consideration of responses to the SYNC message; and a communication unit for transmitting data via the established network session.Type: GrantFiled: December 10, 2018Date of Patent: October 13, 2020Assignee: ELECTRONICS AND TELECOMMUNCATIONS RESEARCH INSTITUTEInventors: Ock-Kee Baek, Wan Choi
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Patent number: 10804937Abstract: A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 64800 and a code rate of 2/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for 16-symbol mapping.Type: GrantFiled: April 25, 2019Date of Patent: October 13, 2020Assignee: ELECTRONICS AND TELECOMMUNCATIONS RESEARCH INSTITUTEInventors: Sung-Ik Park, Sun-Hyoung Kwon, Jae-Young Lee, Heung-Mook Kim, Nam-Ho Hur
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Patent number: 10805021Abstract: 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.Type: GrantFiled: August 2, 2019Date of Patent: October 13, 2020Assignee: ELECTRONICS AND TELECOMMUNCATIONS RESEARCH INSTITUTEInventors: Minkyu Sung, Joonyoung Kim, Jong Hyun Lee, Seung-Hyun Cho
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Patent number: 9563969Abstract: The present invention relates to a method of generating implicit terrain data and an electronic apparatus for performing the method, and more particularly to a method of generating implicit terrain data and an electronic apparatus which are capable of minimizing a size of data while maintaining geographical quality of original terrain data.Type: GrantFiled: August 26, 2014Date of Patent: February 7, 2017Assignee: ELECTRONICS AND TELECOMMUNCATIONS RESEARCH INSTITUTEInventors: Sang Won Ghyme, II Kwon Jeong
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Publication number: 20160183230Abstract: A base station of a mobile communication system divides an ultra wideband into a plurality of unit bands, uses a plurality of beam component carriers corresponding to the L3 CP dedicated unit band as a coverage layer by grouping in one cell in the L3 CP dedicated unit band and uses a plurality of beam component carriers corresponding to the UP dedicated unit band in the UP dedicated unit band as a plurality of capacitor layers by grouping in a plurality of cells of a smaller size than that of the grouping.Type: ApplicationFiled: April 14, 2015Publication date: June 23, 2016Applicant: ELECTRONICS AND TELECOMMUNCATIONS RESEARCH INSTITUTEInventors: SoonGi PARK, DongSeung KWON, Kyung Sook KIM, Jun Sik KIM, Pyeong Jung SONG, Sang Chul OH, Yong Seouk CHOI
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Patent number: 9360621Abstract: Provided is a flat-top mode generating device. The flat-top mode generating device includes an input waveguide, a double-tapered structure connected to the input waveguide, and an input star coupler connected to the double-tapered structure. The double-tapered structure includes a first part having a first height hat is equal to that of each of the input waveguide and the input star coupler, and a second part disposed in the first part on the plane and having a second height that is less than the first height, the second part being tapered from the input star coupler toward the input waveguide.Type: GrantFiled: August 6, 2015Date of Patent: June 7, 2016Assignee: ELECTRONICS AND TELECOMMUNCATIONS RESEARCH INSTITUTEInventors: Jaegyu Park, Myungjoon Kwack, Gyungock Kim, Jiho Joo
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Publication number: 20150207840Abstract: Disclosed is a rate-adaptive data stream management system (DSMS) which is a precedence task, which has a descendent task, and a plurality of data channels and a plurality of feedback channels, the system including: a feedback analyzer which analyzes a control command transmitted from the descendent task; and a data channel selector which controls transmission of a data stream through the data channel with the descendent task based on the analysis result.Type: ApplicationFiled: January 6, 2015Publication date: July 23, 2015Applicant: Electronics and Telecommuncations Research InstituteInventor: Yong Ju LEE
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RFID interrogator retransmitting command depending on collision situation and control method thereof
Patent number: 8779899Abstract: As an RFID interrogator transmitting a command depending on a collision situation and a control method thereof, the RFID interrogator includes a collision diagnosis unit that analyzes data of a received signal received during a receive time in correspondence with a transmitted signal from an RF communication unit that can transmit and receive signal to and from one or more tag, verifies whether or not a collision occurs in the received signal, and diagnoses a collision type depending on an analysis result of the data of the received signal; and a collision resolution unit that can retransmit a command to the tag through the RF communication unit depending on the collision situation on the basis of whether or not occurrence of the collision or not and the collision type that are received from the collision diagnosis unit.Type: GrantFiled: March 12, 2009Date of Patent: July 15, 2014Assignees: Electronics and Telecommuncations Research Institute, Cisc Semiconductor Design+Consulting GmbHInventors: Chanwon Park, Sewon Oh, Gilyoung Choi, Cheolsig Pyo, Jongsuk Chae, Josef Preishuber-Pfluegl, David Tschische -
Publication number: 20140033318Abstract: An apparatus manages universal subscriber identity module (USIM) data in a terminal using a mobile trusted module (MTM). The apparatus includes a mobile information storage unit configured to store at least one key and the USIM data in a protection region, an information security unit configured to protect information stored in a USIM and the terminal using at least one of the USIM data and the key stored in the mobile information storage unit, and a USIM data manager configured to restore at least one of the USIM data and the key stored in the mobile information storage unit to the USIM, and store at least one of USIM data and the key provided from the USIM in the mobile information storage unit.Type: ApplicationFiled: May 29, 2013Publication date: January 30, 2014Applicant: Electronics and Telecommuncations Research InstituteInventors: Jin Hee HAN, Bo-Heung CHUNG, Hwa Shin MOON, Yong Hyuk MOON, Dae Won KIM, Jeong Nyeo KIM
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Patent number: 8565346Abstract: In the present invention, data generated from a source unit are distributed to at least one bandwidth; the data distributed to the respective bandwidths are encoded in order to perform an error correction; the encoded data are distributed to at least one antenna; a subcarrier is allocated to the data distributed to the respective antennas, and an inverse Fourier transform is performed; a short preamble and a first long preamble corresponding to the subcarrier are generated; a signal symbol is generated according to a data transmit mode; and a frame is generated by adding a second long preamble between the signal symbol and a data field for the purpose of estimating a channel of a subcarrier which is not used.Type: GrantFiled: January 20, 2012Date of Patent: October 22, 2013Assignee: Electronics and Telecommuncations Research InstituteInventors: Hee-Jung Yu, Taehyun Jeon, Myung-Soon Kim, Eun-Young Choi, Sok-kyu Lee, Deuk-Su Lyu
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Publication number: 20110225563Abstract: A system for accessing and sharing content having a user-defined format is provided. The system for accessing and sharing content having a user-defined format includes: a user-defined content (UDC) developing device providing a UDC usage program and a UDC sharing program supporting accessing and sharing of UDC having a user-defined format; a Web server uploading the UDC usage program such that the UDC usage program can be downloaded, and installing the UDC sharing program in a server; and a user terminal downloading the UDC usage program from the Web server to access UDC having the user-defined format, and sharing the UDC with a different user terminal through the UDC sharing program installed in the Web server.Type: ApplicationFiled: March 15, 2011Publication date: September 15, 2011Applicant: Electronics and Telecommuncations Research InstituteInventors: Ki Heon KIM, Won Young KIM, Won Hyuk Choi, Kyong I KU
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Publication number: 20110078444Abstract: Provided is a re-authentication apparatus in a Downloadable Conditional Access System (DCAS), the re-authentication apparatus includes: a receiving unit to receive a key request message from a Secure Micro (SM); a determination unit to determine whether to perform re-authentication depending on downloading of SM client image; an identification unit to identify an SM identifier using the key request message, when the re-authentication is performed as a result of the determination; an extraction unit to retrieve previous session information corresponding to the SM identifier and to extract keying information about the previous session information; and an encryption unit to control an encryption key about the SM client image to be reused, the SM client image being encrypted in a previous session based on the previous session information using the keying information.Type: ApplicationFiled: January 22, 2010Publication date: March 31, 2011Applicant: Electronics and Telecommuncations Research InstituteInventors: Young Ho JEONG, Eun Jung KWON, O Hyung KWON, Soo In LEE
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Patent number: 5448080Abstract: Disclosed is an ultrafast optical switching device having two types of multiple quantum well structures to be connected with each other, the device comprising a semi-insulating substrate; and a first and a second multiple quantum well structure formed sequentially on the substrate and united with each other to produce a double-junction multiple quantum well structure. Each of the multiple quantum well structures has nonlinear optical effects and two life time constants present while switching off in the device. One of the life time constants corresponds to a short life time constant to be determined dependent on electrons in the double-junction multiple quantum well structure and the other of the life time constants corresponds to a long life time constant to be determined dependent on holes and lattices therein.Type: GrantFiled: July 12, 1994Date of Patent: September 5, 1995Assignee: Electronics and Telecommuncations Research InstituteInventors: Seon-Gyu Han, Jong-Tai Lee, Byueng-Su Yoo, Tae-Hyung Zyung, Young-Wan Choi, Pyong-Woon Park, El-Hang Lee