公开(公告)号：US12088807B2

公开(公告)日：2024-09-10

申请号：US18118004

申请日：2023-03-06

Applicant: IDEAHUB INC.

Inventor： Sung Chang Lim ,  Hui Yong Kim ,  Se Yoon Jeong ,  Suk Hee Cho ,  Jong Ho Kim ,  Ha Hyun Lee ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim ,  Chie Teuk Ahn

IPC: H04N19/00 ,  H04N19/119 ,  H04N19/124 ,  H04N19/14 ,  H04N19/176 ,  H04N19/196 ,  H04N19/33 ,  H04N19/463 ,  H04N19/70

CPC classification number: H04N19/124 ,  H04N19/119 ,  H04N19/14 ,  H04N19/176 ,  H04N19/196 ,  H04N19/33 ,  H04N19/463 ,  H04N19/70

Abstract: The present invention relates to a video encoding method and apparatus for setting and encoding quantization parameters, and to a video decoding method and apparatus for decoding and setting quantization parameters in a video encoding and decoding apparatus which uses blocks having various sizes and depths as encoding and decoding units.

公开(公告)号：US11425419B2

公开(公告)日：2022-08-23

申请号：US16990532

申请日：2020-08-11

Applicant: IDEAHUB INC.

Inventor： Yoonsik Choe ,  Jang Won Choi

IPC: H04N19/176 ,  H04N19/117 ,  H04N19/11 ,  H04N19/593 ,  H04N19/82 ,  H04N19/186 ,  H04N19/182 ,  H04N19/184

Abstract: Disclosed are methods, apparatuses, and systems for encoding and decoding an image. The present invention provides an intra prediction unit that receives an input image, calculates a correlation between a Luma area block and Chroma area block in the input image in intra prediction, removes high frequency ingredients by low-pass filtering an encoded luma pixel based on the calculated correlation, and generates a prediction block by applying an LM chroma mode, which is an extended chroma mode technique, to the luma pixel removed therefrom the high frequency ingredients.

公开(公告)号：US10812553B2

公开(公告)日：2020-10-20

申请号：US16421087

申请日：2019-05-23

Applicant: IDEAHUB INC.

Inventor： Truong Cong Thang ,  Jin Young Lee ,  Seong Jun Bae ,  Jung Won Kang ,  Soon Heung Jung ,  Sang Taick Park ,  Won Ryu

IPC: H04L29/06 ,  H04N21/239 ,  H04N21/845 ,  H04N21/2343 ,  H04N21/258 ,  H04N21/262 ,  H04L29/08 ,  H04N21/643 ,  H04N21/6437 ,  H04N21/658

Abstract: A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of content are provided. The metadata of the content may be efficiently divided for a purpose of use of a terminal based on general media information or specific media information, and may be transmitted to the terminal. A group may include one or more representations of content. The metadata may include a group element, and the group element may provide a summary of attributes of one or more representations included in the group.

公开(公告)号：US20190124173A1

公开(公告)日：2019-04-25

申请号：US16227921

申请日：2018-12-20

Applicant: IDEAHUB INC.

Inventor： Truong Cong THANG ,  Jin Young LEE ,  Seong Jun BAE ,  Jung Won KANG ,  Soon Heung JUNG ,  Sang Taick PARK ,  Won RYU ,  Jae Gon KIM

IPC: H04L29/08 ,  H04L29/06 ,  H04L12/835 ,  H04N21/6547 ,  H04N21/6543 ,  H04N21/44 ,  H04N21/24

Abstract: A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of content are provided. The metadata may include a minBufferTime attribute indicating a minimum amount of initially buffered media content. A terminal may receive content from a server before playback of the content, and may buffer the content by at least the minimum amount. The metadata may include a range attribute that designates a range of a target indicated by a Uniform Resource Locator (URL). The terminal may receive bytes designated by the range attribute from the URL, and may play back the content using the received bytes.

公开(公告)号：US20230043350A1

公开(公告)日：2023-02-09

申请号：US17865551

申请日：2022-07-15

Applicant: IDEAHUB INC.

Inventor： Yoonsik CHOE ,  Jang Won CHOI

IPC: H04N19/593 ,  H04N19/117 ,  H04N19/82 ,  H04N19/186 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184

Abstract: Disclosed are methods, apparatuses, and systems for encoding and decoding an image. The present invention provides an intra prediction unit that receives an input image, calculates a correlation between a Luma area block and Chroma area block in the input image in intra prediction, removes high frequency ingredients by low-pass filtering an encoded luma pixel based on the calculated correlation, and generates a prediction block by applying an LM chroma mode, which is an extended chroma mode technique, to the luma pixel removed therefrom the high frequency ingredients.

公开(公告)号：US11252421B2

公开(公告)日：2022-02-15

申请号：US17138076

申请日：2020-12-30

Applicant: IDEAHUB INC.

Inventor： Yoon Sik Choe ,  Jang Won Choi

IPC: H04N19/186 ,  H04N19/80 ,  H04N19/117 ,  H04N19/11 ,  H04N19/182 ,  H04N19/593 ,  H04N19/70

Abstract: Disclosed are methods, apparatuses, and systems for encoding and decoding an image. The present invention provides an intra prediction unit receives an input image, removes high frequency ingredients by low pass filtering an encoded luma pixel value in the input image during intra prediction, and generates a prediction block by predicting a chroma pixel value by using a low pass filter (LPF) LM chroma mode for applying an LM chroma mode, which is an extended chroma mode technique for generating a prediction block by predicting the chroma pixel value by applying a correlation between color planes to the luma pixel value having removed therefrom the high frequency ingredients.

公开(公告)号：US20210392340A1

公开(公告)日：2021-12-16

申请号：US17407865

申请日：2021-08-20

Applicant: Ideahub Inc.

Inventor： Je Chang JEONG ,  Soon Jong JIN ,  Sang Jun PARK ,  Hyuk LEE

IPC: H04N19/159 ,  H04N19/196 ,  H04N19/176 ,  H04N19/11 ,  H04N19/152 ,  H04N19/513 ,  H04N19/547 ,  H04N19/124 ,  H04N19/61

Abstract: Provided are methods and apparatuses for improving compression efficiency in directional intra-prediction. A video encoding apparatus, which does not need to record intra mode information, includes a mode selector that selects one from among a plurality of intra modes on the basis of a directionality of at least one neighboring block that has already been reconstructed before a current block is reconstructed, an intra predictor that obtains a prediction block of the current block from the at least one neighboring block according to the directionality of the selected mode, and obtains a residual block by subtracting the prediction block from the current block, and a unit for encoding the obtained residual block.

公开(公告)号：US20190356923A1

公开(公告)日：2019-11-21

申请号：US16532208

申请日：2019-08-05

Applicant: Ideahub Inc.

Inventor： Je Chang JEONG ,  Soon Jong JIN ,  Sang Jun PARK ,  Hyuk LEE

IPC: H04N19/159 ,  H04N19/124 ,  H04N19/176 ,  H04N19/513 ,  H04N19/196 ,  H04N19/61 ,  H04N19/547 ,  H04N19/11 ,  H04N19/152

Abstract: Provided are methods and apparatuses for improving compression efficiency in directional intra-prediction. A video encoding apparatus, which does not need to record intra mode information, includes a mode selector that selects one from among a plurality of intra modes on the basis of a directionality of at least one neighboring block that has already been reconstructed before a current block is reconstructed, an intra predictor that obtains a prediction block of the current block from the at least one neighboring block according to the directionality of the selected mode, and obtains a residual block by subtracting the prediction block from the current block, and a unit for encoding the obtained residual block.

公开(公告)号：US12301842B2

公开(公告)日：2025-05-13

申请号：US18337356

申请日：2023-06-19

Applicant: IDEAHUB INC.

Inventor： Yoon Sik Choe ,  Jang Won Choi

IPC: H04N19/00 ,  H04N19/117 ,  H04N19/186 ,  H04N19/80 ,  H04N19/11 ,  H04N19/182 ,  H04N19/593 ,  H04N19/70

Abstract: Disclosed are methods, apparatuses, and systems for encoding and decoding an image. The present invention provides an intra prediction unit receives an input image, removes high frequency ingredients by low pass filtering an encoded luma pixel value in the input image during intra prediction, and generates a prediction block by predicting a chroma pixel value by using a low pass filter (LPF) LM chroma mode for applying an LM chroma mode, which is an extended chroma mode technique for generating a prediction block by predicting the chroma pixel value by applying a correlation between color planes to the luma pixel value having removed therefrom the high frequency ingredients.

公开(公告)号：US12149736B2

公开(公告)日：2024-11-19

申请号：US17865551

申请日：2022-07-15

Applicant: IDEAHUB INC.

Inventor： Yoonsik Choe ,  Jang Won Choi

IPC: H04N19/593 ,  H04N19/117 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/82 ,  H04N19/11

Abstract: Disclosed are methods, apparatuses, and systems for encoding and decoding an image. The present invention provides an intra prediction unit that receives an input image, calculates a correlation between a Luma area block and Chroma area block in the input image in intra prediction, removes high frequency ingredients by low-pass filtering an encoded luma pixel based on the calculated correlation, and generates a prediction block by applying an LM chroma mode, which is an extended chroma mode technique, to the luma pixel removed therefrom the high frequency ingredients.