公开(公告)号：US09838756B2

公开(公告)日：2017-12-05

申请号：US14470202

申请日：2014-08-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kug Jin Yun ,  Jin Young Lee ,  Won Sik Cheong ,  Gwang Soon Lee ,  Nam Ho Hur

IPC: H04N21/81 ,  H04N21/435 ,  H04N21/2187 ,  H04N13/00

CPC classification number: H04N21/8146 ,  H04N13/194 ,  H04N21/2187 ,  H04N21/435 ,  H04N21/816

Abstract: Provided is a method and apparatus for outputting an additional image independently of a reference image in a broadcasting receiver including a communicator to receive a stream of an additional image of a three-dimensional (3D) broadcast in non-real time, and receive a stream of a reference image of the 3D broadcast in real-time and a processor to generate a 3D image of the 3D broadcast based on the stream of the additional image and the stream of the reference image.

公开(公告)号：US09652128B2

公开(公告)日：2017-05-16

申请号：US14134387

申请日：2013-12-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hong Chang Shin ,  Gi Mun Um ,  Chan Kim ,  Hyun Lee ,  Eung Don Lee ,  Won Sik Cheong ,  Nam Ho Hur

IPC: G06F3/048 ,  G06F3/0484 ,  G06F17/30 ,  G06T19/00 ,  G06T7/73

CPC classification number: G06F3/0484 ,  G06F17/30879 ,  G06T7/73 ,  G06T19/006

Abstract: There are provided a method and apparatus for controlling an electronic device. The apparatus for controlling an electronic device includes a marker recognition unit configured to recognize the marker of the electronic device and a control unit configured to perform communication with the electronic device based on the marker and control the electronic device using a Graphic User Interface (GUI) program received from the electronic device.

公开(公告)号：US09621190B2

公开(公告)日：2017-04-11

申请号：US14942392

申请日：2015-11-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Ik Park ,  Heung Mook Kim ,  Nam Ho Hur

IPC: H03M13/00 ,  H03M13/11

CPC classification number: H03M13/1185 ,  H03M13/1105 ,  H03M13/116 ,  H03M13/1165 ,  H03M13/1168 ,  H03M13/616 ,  H03M13/6552 ,  H03M13/6555 ,  H04L1/0041 ,  H04L1/0058

Abstract: Provided is an LDPC (Low Density Parity Check) code for terrestrial cloud broadcast. A method of encoding input information based on an LDPC (Low Density Parity Check) includes receiving information and encoding the input information with an LDPC codeword using a parity check matrix, wherein the parity check matrix may have a structure obtained by combining a first parity check matrix for an LDPC code having a higher code rate than a reference value with a second parity check matrix for an LDPC code having a lower code rate than the reference value.

公开(公告)号：US09154293B2

公开(公告)日：2015-10-06

申请号：US14097440

申请日：2013-12-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae Ho Lee ,  Yang Su Kim ,  Sang Jung Ra ,  Han Seung Koo ,  Dong Joon Choi ,  Nam Ho Hur

IPC: H04L7/033 ,  H04L7/00 ,  H04L27/26

CPC classification number: H04L7/0079 ,  H04L27/2656 ,  H04L27/2663 ,  H04L27/2678

Abstract: Disclosed are a method and apparatus for estimating symbol timing in a non-synchronized OFDM system. The present invention includes synchronizing a frame of a received signal, estimating the symbol timing of each symbol of the frame based on the synchronization, compensating for the symbol timing using a phase difference attributable to a Symbol Timing Offset (STO), variably changing within a Cyclic Prefix (CP) interval due to the frequency offset of a sampling clock and thermal noise, and performing channel equalization using a preamble based on output including corrected phase rotation.

Abstract translation: 公开了一种在非同步OFDM系统中估计符号定时的方法和装置。 本发明包括使接收信号的帧同步，基于同步来估计帧的每个符号的符号定时，使用归因于符号定时偏移（STO）的相位差来补偿符号定时，该相位差可在一个 由于采样时钟和热噪声的频率偏移导致的循环前缀（CP）间隔，并且使用基于包括校正相位旋转的输出的前导码来执行信道均衡。

公开(公告)号：US11985612B2

公开(公告)日：2024-05-14

申请号：US17277061

申请日：2019-09-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hoi Yoon Jung ,  Sung Ik Park ,  Heung Mook Kim ,  Nam Ho Hur

IPC: H04W56/00 ,  H04L5/00

CPC classification number: H04W56/001 ,  H04L5/0048 ,  H04W56/003

Abstract: Disclosed are a method and an apparatus for transmitting and receiving a signal including cell information in a communication system. An operation method of a terminal comprises the steps of: receiving a first SS/PBCH block from a base station; receiving a second SS/PBCH block from the base station after receiving the first SS/PBCH block; and confirming information included in the first SS/PBCH block and the second SS/PBCH block by performing a combining operation on the first SS/PBCH block and the second SS/PBCH block when a transmission beam of the first SS/PBCH block is the same as a transmission beam of the second SS/PBCH block. Therefore, the performance of a communication system can be improved.

公开(公告)号：US11910014B2

公开(公告)日：2024-02-20

申请号：US18091542

申请日：2022-12-30

Applicant: Electronics and Telecommunications Research Institute ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Gun Bang ,  Won Sik Cheong ,  Gi Mun Um ,  Nam Ho Hur ,  Gwang Hoon Park ,  Kyung Yong Kim

IPC: H04N19/593 ,  H04N19/597 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96 ,  H04N19/107 ,  H04N19/44

CPC classification number: H04N19/593 ,  H04N19/107 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/597 ,  H04N19/96

Abstract: Disclosed are an image encoding method using a skip mode and a device using the method. The image encoding method may comprise the steps of: judging whether there is residual block data of a prediction target block on the basis of predetermined data indicating whether residual block data has been encoded; and, if there is residual block data, restoring the prediction target block on the basis of the residual block data and an intra-screen predictive value of the prediction target block. Consequently, encoding and decoding efficiency can be increased by carrying out the encoding and decoding of screen residual data only for prediction target blocks where there is a need for a residual data block in accordance with screen similarity.

公开(公告)号：US11375511B2

公开(公告)日：2022-06-28

申请号：US16636587

申请日：2018-08-03

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hoi Yoon Jung ,  Sung Ik Park ,  Heung Mook Kim ,  Nam Ho Hur

IPC: H04W72/04 ,  H04W76/27 ,  H04L27/26 ,  H04W72/12

Abstract: A method for transmitting and receiving slot setting information in a communication system is disclosed. An operating method of a UE comprises the steps of: receiving, from a base station, a first upper layer message including SFI for indicating a format of a slot; receiving, from the base station, DCI or a second upper layer message for indicating a use of a flexible symbol belonging to the slot set by the SFI; and determining the flexible symbol belonging to the slot as a DL symbol or a UL symbol on the basis of the second upper layer message or the DCI. Therefore, a performance of a communication system can be improved.

公开(公告)号：US10700895B2

公开(公告)日：2020-06-30

申请号：US15864733

申请日：2018-01-08

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae Hwui Bae ,  Jin Hyuk Song ,  Je Won Lee ,  Joon Young Jung ,  Dong Joon Choi ,  Nam Ho Hur

IPC: H04L25/02 ,  H04L27/26

Abstract: Disclosed are a roll-off period detection method, a symbol starting point detection method, a fractional frequency offset estimating method, and an OFDM downstream system using the same. A method of detecting a roll-off period in an OFDM downstream system according to an embodiment of the present disclosure may include: generating a temporary roll-off period by applying a windowing function to a signal having a preset length; and detecting a roll-off period based on any one of a cross correlation and a sum of differences between a detection target signal included in a range of two OFDM symbol signals based on a detection starting point, and the temporary roll-off period.

公开(公告)号：US10412403B2

公开(公告)日：2019-09-10

申请号：US16103042

申请日：2018-08-14

Applicant: Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Gun Bang ,  Gwang Soon Lee ,  Nam Ho Hur ,  Gwang Hoon Park ,  Young Su Heo ,  Kyung Yong Kim ,  Yoon Jin Lee

IPC: H04N11/02 ,  H04N19/51 ,  H04N19/597 ,  H04N19/52 ,  H04N19/176

Abstract: Disclosed are a video encoding/decoding method and apparatus including a plurality of views. The video decoding method including the plurality of views comprises the steps of: inducing basic combination motion candidates for a current Prediction Unit (PU) to configure a combination motion candidate list; inducing expanded combination motion candidates for the current PU when the current PU corresponds to a depth information map or a dependent view; and adding the expanded combination motion candidates to the combination motion candidate list.

公开(公告)号：US10142150B2

公开(公告)日：2018-11-27

申请号：US15287575

申请日：2016-10-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  Kyungpook National University Industry-Academic Cooperation Foundation

Inventor： Young Su Kim ,  Dong Seog Han ,  Myung Chul Park ,  Hyoung Soo Lim ,  Nam Ho Hur

IPC: H04L27/26 ,  H04L5/00

Abstract: An exemplary embodiment of the present invention provides a pilot signal generating apparatus, including: a changed amount estimating unit which estimates a changed amount of a pilot symbol due to interference of a data symbol which is adjacent to a predefined position of the pilot symbol; and a symbol generating unit which generates the pilot symbol in consideration of the estimated changed amount.