公开(公告)号：US20140177722A1

公开(公告)日：2014-06-26

申请号：US14159953

申请日：2014-01-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Se Yoon Jeong ,  Jin Soo Choi ,  Donghyung Kim ,  Won-Sik Cheong ,  Kyung Ae Moon ,  Jin Woo Hong

IPC: H04N19/583 ,  H04N19/51

CPC classification number: H04N19/50 ,  H04N19/11 ,  H04N19/136 ,  H04N19/176 ,  H04N19/182 ,  H04N19/51 ,  H04N19/513 ,  H04N19/593 ,  H04N19/61

Abstract: An apparatus for coding an image is provided to effectively code the image. The apparatus for coding the image includes an input image segmentation unit to segment an input image into a plurality of image blocks including a first image block and a second image block. The apparatus also includes a waveform information generation unit to select a plurality of reference pixels from among pixels included in the first image block, generate first waveform information about the first image block based on a pixel value difference between the selected plurality of reference pixels, and generate second waveform information about the second image block based on a pixel value difference between the pixels included in the second image block. The apparatus also includes a coding unit to code an image included in the second image block based on the first waveform information and the second waveform information.

公开(公告)号：US12148438B2

公开(公告)日：2024-11-19

申请号：US17373243

申请日：2021-07-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION

Inventor： Seung Kwon Beack ,  Tae Jin Lee ,  Min Je Kim ,  Dae Young Jang ,  Kyeongok Kang ,  Jin Woo Hong ,  Ho Chong Park ,  Young-cheol Park

IPC: G10L19/022 ,  G10L19/02 ,  G10L19/18

Abstract: An encoding apparatus and a decoding apparatus in a transform between a Modified Discrete Cosine Transform (MDCT)-based coder and a different coder are provided. The encoding apparatus may encode additional information to restore an input signal encoded according to the MDCT-based coding scheme, when switching occurs between the MDCT-based coder and the different coder. Accordingly, an unnecessary bitstream may be prevented from being generated, and minimum additional information may be encoded.

公开(公告)号：US11922962B2

公开(公告)日：2024-03-05

申请号：US17895256

申请日：2022-08-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION

Inventor： Seungkwon Beack ,  Tae Jin Lee ,  Min Je Kim ,  Kyeongok Kang ,  Dae Young Jang ,  Jeongil Seo ,  Jin Woo Hong ,  Chieteuk Ahn ,  Ho Chong Park ,  Young-cheol Park

IPC: G10L19/022 ,  G10L19/06 ,  G10L19/18 ,  G10L19/22

CPC classification number: G10L19/22 ,  G10L19/022 ,  G10L19/06 ,  G10L19/18

Abstract: A Unified Speech and Audio Codec (USAC) that may process a window sequence based on mode switching is provided. The USAC may perform encoding or decoding by overlapping between frames based on a folding point when mode switching occurs. The USAC may process different window sequences for each situation to perform encoding or decoding, and thereby may improve a coding efficiency.

公开(公告)号：US11659159B2

公开(公告)日：2023-05-23

申请号：US16896493

申请日：2020-06-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang Lim ,  Jong Ho Kim ,  Hae Chul Choi ,  Hui Yong Kim ,  Ha Hyun Lee ,  Jin Ho Lee ,  Se Yoon Jeong ,  Suk Hee Cho ,  Jin Soo Choi ,  Jin Woo Hong ,  Jin Woong Kim

IPC: H04N19/105 ,  H04N19/503 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/11 ,  H04N19/157

CPC classification number: H04N19/105 ,  H04N19/11 ,  H04N19/157 ,  H04N19/176 ,  H04N19/46 ,  H04N19/503 ,  H04N19/593

Abstract: Provided are an image encoding method and device. When carrying out image encoding for a block within a slice, at least one block in a restored block of the slice is set as a reference block. When this is done, the encoding parameters of the reference block are distinguished, and the block to be encoded is encoded adaptively based on the encoding parameters.

公开(公告)号：US11430458B2

公开(公告)日：2022-08-30

申请号：US16835728

申请日：2020-03-31

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION

Inventor： Seungkwon Beack ,  Tae Jin Lee ,  Min Je Kim ,  Kyeongok Kang ,  Dae Young Jang ,  Jeongil Seo ,  Jin Woo Hong ,  Chieteuk Ahn ,  Ho Chong Park ,  Young-cheol Park

IPC: G10L19/022 ,  G10L19/22 ,  G10L19/06 ,  G10L19/18

Abstract: A Unified Speech and Audio Codec (USAC) that may process a window sequence based on mode switching is provided. The USAC may perform encoding or decoding by overlapping between frames based on a folding point when mode switching occurs. The USAC may process different window sequences for each situation to perform encoding or decoding, and thereby may improve a coding efficiency.

公开(公告)号：US10798409B2

公开(公告)日：2020-10-06

申请号：US16598534

申请日：2019-10-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hae-Chul Choi ,  Se Yoon Jeong ,  Sukhee Cho ,  Hui Yong Kim ,  Jinho Lee ,  Hahyun Lee ,  Sung-Chang Lim ,  Jongho Kim ,  Jin Soo Choi ,  Jin Woo Hong ,  Jin Woong Kim

IPC: H04N19/52 ,  H04N19/513 ,  H04N19/172 ,  H04N19/176

Abstract: Provided is an image encoding/decoding apparatus and method. The image encoding apparatus may include a motion vector prediction unit to perform a prediction with respect to an arbitrary motion vector of a current block within an image, using at least one of vector information of a motion vector corresponding to an adjacent block and vector information of a previous motion vector of the current block, and a differential determination unit to determine differential information of a motion vector of the current block based on the motion vector predicted in the motion vector prediction unit and an actual motion vector of the current block.

公开(公告)号：US10708580B2

公开(公告)日：2020-07-07

申请号：US13959885

申请日：2013-08-06

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang Lim ,  Jong Ho Kim ,  Hae Chul Choi ,  Hui Yong Kim ,  Ha Hyun Lee ,  Jin Ho Lee ,  Se Yoon Jeong ,  Suk Hee Cho ,  Jin Soo Choi ,  Jin Woo Hong ,  Jin Woong Kim

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/105 ,  H04N19/593 ,  H04N19/176

Abstract: Provided are an image encoding method and device. When carrying out image encoding for a block within a slice, at least one block in a restored block of the slice is set as a reference block. When this is done, the encoding parameters of the reference block are distinguished, and the block to be encoded is encoded adaptively based on the encoding parameters.

公开(公告)号：US10321137B2

公开(公告)日：2019-06-11

申请号：US15288942

申请日：2016-10-07

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Hae Chul Choi ,  Se Yoon Jeong ,  Sung-Chang Lim ,  Jin Soo Choi ,  Jin Woo Hong ,  Dong Gyu Sim ,  Seoung-Jun Oh ,  Chang-Beom Ahn ,  Gwang Hoon Park ,  Seung Ryong Kook ,  Sea-Nae Park ,  Kwang-Su Jeong

IPC: G06K9/36 ,  H04N19/159 ,  H04N19/11 ,  H04N19/124 ,  H04N19/132 ,  H04N19/44 ,  H04N19/50 ,  H04N19/587 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70 ,  H04N19/91 ,  H04N19/147 ,  H04N19/176 ,  H04N19/182 ,  H04N19/51 ,  H04N19/615 ,  H04N19/105 ,  H04N19/117 ,  H04N19/43 ,  H04N19/172

Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.

公开(公告)号：US10212448B2

公开(公告)日：2019-02-19

申请号：US15439322

申请日：2017-02-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hae-Chul Choi ,  Se Yoon Jeong ,  Sukhee Cho ,  Hui Yong Kim ,  Jinho Lee ,  Hahyun Lee ,  Sung-Chang Lim ,  Jongho Kim ,  Jin Soo Choi ,  Jin Woo Hong ,  Jin Woong Kim

IPC: H04N19/52 ,  H04N19/513 ,  H04N19/172 ,  H04N19/176

Abstract: Provided is an image encoding/decoding apparatus and method. The image encoding apparatus may include a motion vector prediction unit to perform a prediction with respect to an arbitrary motion vector of a current block within an image, using at least one of vector information of a motion vector corresponding to an adjacent block and vector information of a previous motion vector of the current block, and a differential determination unit to determine differential information of a motion vector of the current block based on the motion vector predicted in the motion vector prediction unit and an actual motion vector of the current block.

公开(公告)号：US10097319B2

公开(公告)日：2018-10-09

申请号：US15110854

申请日：2015-01-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  YONSEI UNIVERSITY WONJU INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Chang Ki Kim ,  Kwang Deok Seo ,  Jeong Ju Yoo ,  Jin Woo Hong

IPC: H04L1/18 ,  H04L12/841 ,  H04L12/825

Abstract: The present invention discloses a method of re-transmission of a lost MMT packet by a packet transmission apparatus. The method includes generating a media processing unit (MPU) based on a media fragment unit (MFU) and generating an MMT asset by encapsulating the MPU; generating an MMT packet based on the MPU included in the generated MMT asset; and transmitting the generated MMT packet, wherein the method further comprises adding, in a signaling message related to re-transmission of the MMT packet, delay_constrained_ARQ_flag to indicate whether or not the MMT packet transmission apparatus supports a delay-constrained automatic repeat request (ARQ) function.