公开(公告)号：US20150139325A1

公开(公告)日：2015-05-21

申请号：US14406529

申请日：2013-06-13

Applicant: MEDIATEK INC.

Inventor： Tzu-Der Chuang ,  Yu-Wen Huang ,  Ching-Yeh Chen ,  Chia-Yang Tsai ,  Chih-Ming Fu ,  Shih-Ta Hsiang

IPC: H04N19/30 ,  H04N19/52 ,  H04N19/50

CPC classification number: H04N19/30 ,  H04N19/31 ,  H04N19/33 ,  H04N19/36 ,  H04N19/50 ,  H04N19/51 ,  H04N19/52 ,  H04N19/587 ,  H04N19/59 ,  H04N19/593

Abstract: A method and apparatus for inter-layer prediction for scalable video coding are disclosed. Embodiments of the present invention utilize weighted prediction for scalable coding. The weighted prediction is based on the predicted texture data and the inter-layer Intra prediction data derived from BL reconstructed data. The inter-layer Intra prediction data corresponds to the BL reconstructed data or up-sampled BL reconstructed data. The predicted texture data corresponds to spatial Intra prediction data or motion-compensated prediction data based on the second EL video data in the same layer as the current EL picture. Embodiments of the present invention also utilize the reference picture list including an inter-layer reference picture (ILRP) corresponding to BL reconstructed texture frame or up-sampled BL reconstructed texture frame for Inter prediction of EL video data. The motion vector is limited to a range around (0,0) when the ILRP is selected as a reference picture.

Abstract translation: 公开了一种用于可分级视频编码的层间预测的方法和装置。 本发明的实施例利用可扩展编码的加权预测。 加权预测基于从BL重建数据导出的预测纹理数据和层间Intra预测数据。 层内帧内预测数据对应于BL重构数据或上采样BL重构数据。 预测纹理数据对应于基于与当前EL图像相同的层中的第二EL视频数据的空间帧内预测数据或运动补偿预测数据。 本发明的实施例还使用包括对应于BL重构纹理帧或上采样BL重建纹理帧的层间参考图片（ILRP）的参考图片列表，用于EL视频数据的帧间预测。 当选择ILRP作为参考图像时，运动矢量被限制在大约（0,0）的范围内。

公开(公告)号：US20140247884A1

公开(公告)日：2014-09-04

申请号：US14353025

申请日：2012-11-07

Applicant: MEDIATEK INC.

Inventor： Tzu-Der Chuang ,  Jian-Liang Lin ,  Ching-Yeh Chen ,  Yi-Wen Chen ,  Yu-Wen Huang

IPC: H04N19/51 ,  H04N19/583 ,  H04N19/30

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/172 ,  H04N19/176 ,  H04N19/42 ,  H04N19/513 ,  H04N19/567 ,  H04N19/58 ,  H04N19/91

Abstract: A method and apparatus for deriving a scaled MV (motion vector) for a current block based on a candidate MV associated with a candidate block are disclosed. Embodiments according to the present invention increase effective scaling factor of motion vector scaling. In one embodiment, a distance ratio of a first picture distance between a current picture and a target reference picture pointed to by a current motion vector of the current block to a second picture distance between a candidate picture corresponding to the candidate block and a candidate reference picture pointed to by the candidate MV is computed. The scaled MV is then generated based on the candidate MV according to the distance ratio, where the scaled MV has an effective scaling ratio between −m and n, and wherein m and n are positive integers greater than 4. The values of m and n can be 8, 16 or 32.

Abstract translation: 公开了一种用于基于与候选块相关联的候选MV导出当前块的缩放MV（运动矢量）的方法和装置。 根据本发明的实施例增加了运动矢量缩放的有效缩放因子。 在一个实施例中，由当前块的当前运动矢量指向的当前画面和目标参考画面之间的第一画面距离与候选块对应的候选画面与候选画面之间的第二画面距离的距离比 计算由候选MV指向的图片。 然后根据距离比，基于候选MV生成缩放的MV，其中缩放的MV具有-m和n之间的有效缩放比率，并且其中m和n是大于4的正整数。m和n的值 可以是8,16或32。

公开(公告)号：US20130259117A1

公开(公告)日：2013-10-03

申请号：US13904294

申请日：2013-05-29

Applicant: MEDIATEK INC.

Inventor： Chih-Ming Fu ,  Ching-Yeh Chen ,  Chia-Yang Tsai ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC: H04N7/26

CPC classification number: H04N19/117 ,  H04N19/10 ,  H04N19/115 ,  H04N19/129 ,  H04N19/134 ,  H04N19/137 ,  H04N19/14 ,  H04N19/154 ,  H04N19/157 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/439 ,  H04N19/463 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

Abstract: A method and apparatus for processing of coded video using adaptive offset (AO) are disclosed. Embodiments of the present invention divide reconstructed video data into multiple filter units and apply adaptive offset to the filter units to generate filtered video data, where boundaries of filter units correspond to boundaries of coding units and each of said filter units contains at least one coding unit. Furthermore, two or more of the multiple filter units can be merged as indicated by a merge index to share the applied adaptive offset. A filter control flag can be used to indicate filter ON/OFF control. The luma and chroma components may also share the same filter information. In another embodiment, the filter information sharing among filter units can be applied regardless whether the boundaries of the filter units are aligned with the boundaries of the coding units.

Abstract translation: 公开了一种使用自适应偏移（AO）处理编码视频的方法和装置。 本发明的实施例将重构的视频数据分割成多个滤波器单元并对滤波器单元应用自适应偏移以产生滤波视频数据，滤波器单元的边界对应于编码单元的边界，并且每个所述滤波器单元包含至少一个编码单元 。 此外，多个滤波器单元中的两个或更多个可以合并，如合并索引所指示的，以共享所施加的自适应偏移。 滤波器控制标志可用于指示滤波器ON / OFF控制。 亮度和色度分量也可以共享相同的过滤器信息。 在另一个实施例中，可以应用滤波器单元之间的滤波器信息共享，而不管滤波器单元的边界是否与编码单元的边界对准。

公开(公告)号：US20250053211A1

公开(公告)日：2025-02-13

申请号：US18231256

申请日：2023-08-08

Applicant: MEDIATEK INC.

Inventor： Hsien-Hsi Hsieh ,  Ching-Yeh Chen ,  Yu-Ming Lin ,  Hsing-Ju Wei

IPC: G06F1/20

Abstract: A system comprises a controller, configured to receive at least one thermal control setting and a system temperature, and to perform a first thermal throttling operation according to at least one thermal control instruction; and an application, coupled to the controller, configured to receive the at least one thermal control setting and the system temperature from the controller, and to generate the at least one thermal control instruction according to the at least one thermal control setting and the system temperature.

公开(公告)号：US12192486B2

公开(公告)日：2025-01-07

申请号：US17978530

申请日：2022-11-01

Applicant: MediaTek Inc.

Inventor： Cheng-Yen Chuang ,  Chun-Chia Chen ,  Chih-Wei Hsu ,  Tzu-Der Chuang ,  Ching-Yeh Chen ,  Yu-Wen Huang

IPC: H04N19/176 ,  H04N19/119

Abstract: Various schemes pertaining to video coding parallelization techniques are described. An apparatus receives video data. The apparatus subsequently calculates a plurality of figures of merits (FOMs), each of the FOM representing how well a particular coding tool may perform in encoding the video data. The apparatus further determines a coding tool that may be suitable for encoding the video data by comparing the FOMs. In determining the coding tool, the apparatus utilizes time-interleaving techniques to parallelly process the video data. The video data may include an array of coding blocks, and the apparatus may receive the video data using a snake-like processing order scanning through the array of coding blocks.

公开(公告)号：US12063387B2

公开(公告)日：2024-08-13

申请号：US15861476

申请日：2018-01-03

Applicant: MediaTek Inc.

Inventor： Tzu-Der Chuang ,  Ching-Yeh Chen

IPC: H04N19/577 ,  H04N19/517 ,  H04N19/527 ,  H04N19/96

CPC classification number: H04N19/577 ,  H04N19/517 ,  H04N19/527 ,  H04N19/96

Abstract: The techniques described herein relate to methods, apparatus, and computer readable media configured to determine motion vectors. The techniques relate to both encoders and decoders. For example, a decoder receives compressed video data related to a set of frames. The decoder calculates, using a decoder-side predictor refinement technique, a new motion vector for a current frame from the set of frames, wherein the new motion vector estimates motion for the current frame based on one or more reference frames. The calculation includes retrieving a first motion vector associated with the current frame, executing a first portion of the decoding process using the first motion vector, retrieving a second motion vector associated with the current frame that is different than the first motion vector, and executing a second portion of the decoding process using the second motion vector.

公开(公告)号：US11985324B2

公开(公告)日：2024-05-14

申请号：US17437148

申请日：2020-03-13

Applicant: MEDIATEK INC.

Inventor： Yu-Cheng Lin ,  Chun-Chia Chen ,  Chih-Wei Hsu ,  Ching-Yeh Chen ,  Tzu-Der Chuang ,  Yu-Wen Huang

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/513

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/513

Abstract: Exemplary video processing methods and apparatuses for encoding or decoding a current block by inter prediction are disclosed. Input data of a current block is received and partitioned into sub-partitions and motion refinement is independently performed on each sub-partition. A reference block for each sub-partition is obtained from one or more reference pictures according to an initial motion vector (MV). A refined MV for each sub-partition is derived by searching around the initial MV with N-pixel refinement. One or more boundary pixels of the reference block for a sub-partition is padded for motion compensation of the sub-partition. A final predictor for the current block is generated by performing motion compensation for each sub-partition according to its refined MV. The current block is then encoded or decoded according to the final predictor.

公开(公告)号：US11930169B2

公开(公告)日：2024-03-12

申请号：US17619812

申请日：2020-06-24

Applicant: MEDIATEK INC.

Inventor： Chen-Yen Lai ,  Ching-Yeh Chen ,  Tzu-Der Chuang

IPC: H04N7/12 ,  H04N19/117 ,  H04N19/132 ,  H04N19/172 ,  H04N19/186 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/172 ,  H04N19/186 ,  H04N19/82

Abstract: Methods and apparatus for video coding are disclosed. According to one method, First ALF (Adaptive Loop Filter) processing is applied to the reconstructed chroma samples for a target reconstructed chroma sample to generate a first filtered chroma sample. Second ALF processing is applied to the related reconstructed luma samples to generate a second filtered chroma sample for the target reconstructed chroma sample, where positions of the related reconstructed luma samples selected for the second ALF processing are determined according to the target chroma format. According to another method, the luma ALF and the cross-component ALF have the same filter coefficient precision.

公开(公告)号：US11792401B2

公开(公告)日：2023-10-17

申请号：US17249667

申请日：2021-03-09

Applicant: MEDIATEK INC.

Inventor： Zhi-Yi Lin ,  Tzu-Der Chuang ,  Ching-Yeh Chen ,  Chih-Wei Hsu

IPC: H04N19/132 ,  H04N19/105 ,  G06F17/16 ,  H04N19/176 ,  H04N19/159

CPC classification number: H04N19/132 ,  G06F17/16 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: Method and apparatus of video coding are disclosed. According to one method, the left reference boundary samples and the top reference boundary samples are checked jointly. According to another method, selected original left reference boundary samples and selected original top reference boundary samples at specific positions are used for predictor up-sampling. According to yet another method, the horizontal interpolation and the vertical interpolation are in a fixed order regardless of a shape of the current block, size of the current block or both.

公开(公告)号：US11695953B2

公开(公告)日：2023-07-04

申请号：US17326421

申请日：2021-05-21

Applicant: MEDIATEK INC.

Inventor： Zhi-Yi Lin ,  Tzu-Der Chuang ,  Ching-Yeh Chen ,  Chun-Chia Chen ,  Chih-Wei Hsu

IPC: H04N19/577 ,  H04N19/70

CPC classification number: H04N19/577 ,  H04N19/70

Abstract: A method and apparatus use an Inter coding tool and OBMC (Overlapped Block Motion Compensation). According to one implementation, a method of video coding using OBMC (Overlapped Block Motion Compensation) operates by receiving input data associated with a current block, wherein the input data correspond to pixel data to be coded at an encoder side or coded data to be decoded at a decoder side, applying the OBMC to the current block depending on one or more constraints, and signaling an OBMC syntax conditionally at the encoder side or parsing the OBMC syntax conditionally at the decoder side for the current block, wherein the OBMC syntax indicates whether the OBMC is applied to the current block.