公开(公告)号：US20230156234A1

公开(公告)日：2023-05-18

申请号：US17726713

申请日：2022-04-22

Applicant: MEDIATEK INC.

Inventor： Shih-Chun CHIU ,  Chih-Wei HSU ,  Ching-Yeh CHEN ,  Chun-Chia CHEN ,  Tzu-Der CHUANG ,  Yu-Wen HUANG

IPC: H04N19/82 ,  H04N19/117 ,  H04N19/147 ,  H04N19/186 ,  H04N19/124

CPC classification number: H04N19/82 ,  H04N19/117 ,  H04N19/124 ,  H04N19/147 ,  H04N19/186

Abstract: Video encoding methods and apparatuses include receiving reconstructed video samples, determining an initial clipping setting for ALF coefficients, deriving clipping setting candidates from the initial clipping setting. ALF coefficients for the initial clipping setting and the clipping setting candidates are derived by solving inverse matrices, where partial intermediate results of solving ALF coefficients are shared by two or more clipping settings. A distortion value corresponds to the derived ALF coefficients for each clipping setting is computed, and final clipping indices for final ALF coefficients are determined according to the distortion values. ALF filtering is applied to the reconstructed video samples based on the final ALF coefficients and the final clipping indices.

公开(公告)号：US20210321089A1

公开(公告)日：2021-10-14

申请号：US17282361

申请日：2019-10-05

Applicant: MEDIATEK INC.

Inventor： Yu-Cheng LIN ,  Chen-Yen LAI ,  Chun-Chia CHEN ,  Yu-Ling HSIAO ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN ,  Chih-Wei HSU

IPC: H04N19/105 ,  H04N19/136 ,  H04N19/176

Abstract: A method and apparatus of video coding using history-based candidate derivation are disclosed. According to one method, a current block is inside a Shared Merge candidate list Region (SMR) or a history-based parallel processing region is received. The current block is encoded or decoded using a Merge candidate list. Only if the current block is one of first-coded N (N≥0) blocks, one of last-coded N blocks, or one of selected N blocks, the history-based candidate list is updated after the current block is encoded or decoded. In one embodiment, Merge candidate list is pre-generated for the current block in the SMR and is separately generated for the current block in the history-based parallel processing region. In another method, if the current block is inside the SMR or the history-based parallel processing region, the current block is encoded or decoded using a history-based candidate list associated with the root CU.

公开(公告)号：US20210266566A1

公开(公告)日：2021-08-26

申请号：US17261344

申请日：2019-08-15

Applicant: MEDIATEK INC.

Inventor： Chun-Chia CHEN ,  Chih-Wei HSU ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN ,  Yu-Wen HUANG

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/137 ,  H04N19/119 ,  H04N19/96 ,  H04N19/46 ,  H04N19/176

Abstract: A method and apparatus of video coding are disclosed. According to one method, if a block size of the current block is smaller than a threshold, a candidate list is constructed without at least one candidate derived from neighbouring blocks. According to another method, a current area is partitioned into multiple leaf blocks using QTBTTT (Quadtree, Binary Tree and Ternary Tree) structure and the QTBTTT structure corresponding to the current area comprises a target root node with multiple target leaf nodes under the target root node and each target leaf node is associated with one target leaf block. If a reference block for a current target leaf block is inside a shared boundary or a root block corresponding to the target root node, a target candidate associated with the reference block is excluded from a common candidate list or a modified target candidate is included in the common candidate list.

公开(公告)号：US20210120262A1

公开(公告)日：2021-04-22

申请号：US17046336

申请日：2019-04-17

Applicant: MEDIATEK INC.

Inventor： Chun-Chia CHEN ,  Chih-Wei HSU ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN

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

Abstract: Method and apparatus for a coding system with selectively refining an initial MV based on candidate characteristics of the initial MV are disclosed. The candidate characteristics of the initial MV may correspond to candidate position within the candidate list, association within interleaved candidate groups formed by candidates in the candidate list or restricted candidates belonging to a candidate group formed by excluding one or more spatial candidates, or one or more selected-type candidates from an original candidate group. According to another method, the search for candidate refinement is restricted to 8-connected locations around the target initial MV. In yet another method, the candidate refinement uses a reduced template of the current block and a reduced corresponding template of the reference block. In yet another method, the search for candidate refinement uses an adaptive search window.

公开(公告)号：US20200021845A1

公开(公告)日：2020-01-16

申请号：US16507403

申请日：2019-07-10

Applicant: MEDIATEK INC.

Inventor： Zhi-Yi LIN ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN ,  Chun-Chia CHEN ,  Chih-Wei HSU

IPC: H04N19/577 ,  H04N19/70

Abstract: Method and apparatus of using an Inter coding tool and OBMC (Overlapped Block Motion Compensation) are disclosed. According to one method, when the neighboring block is bi-prediction coded, the neighboring block is treated as a uni-prediction block by deriving an associated OBMC predictor based on uni-prediction motion information derived from the neighboring block. According to another method, when OBMC is applied depending on one or more constraints, an OBMC syntax is signaled conditionally at the encoder side or the OBMC syntax is parsed conditionally at the decoder side for the current block, where the OBMC syntax indicates whether the OBMC is applied to the current block.

公开(公告)号：US20180242024A1

公开(公告)日：2018-08-23

申请号：US15869759

申请日：2018-01-12

Applicant: MEDIATEK INC.

Inventor： Chun-Chia CHEN ,  Chih-Wei HSU ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN ,  Yu-Wen HUANG

IPC: H04N19/96 ,  H04N19/159 ,  H04N19/176 ,  H04N19/66

CPC classification number: H04N19/96 ,  H04N19/159 ,  H04N19/176 ,  H04N19/463 ,  H04N19/52 ,  H04N19/66

Abstract: Video processing methods and apparatuses for candidate set determination for a current block partitioned from a parent block by quad-tree splitting comprise receiving input data of a current block, determining a candidate set for the current block by prohibiting a spatial candidate derived from any of neighboring blocks partitioned from the same parent block or determining the candidate set for the current block by conducting a pruning process if all the neighboring blocks are coded in Inter prediction and motion information of the neighboring blocks are the same, and encoding or decoding the current block based on the candidate set by selecting one final candidate from the candidate set. The pruning process comprises scanning the candidate set to determine if any candidate equals to the spatial candidate derived from the neighboring blocks, and removing the candidate equals to the spatial candidate from the candidate set.

公开(公告)号：US20180218594A1

公开(公告)日：2018-08-02

申请号：US15418876

申请日：2017-01-30

Applicant: MEDIATEK INC.

Inventor： Chih-Kai CHANG ,  Shuo-Li SHIH ,  Chun-Chia CHEN ,  Tsu-Ming LIU

IPC: G08C17/02 ,  G08C23/04

CPC classification number: G08C17/02 ,  G08C23/04 ,  G08C2201/20 ,  G08C2201/32 ,  G08C2201/70 ,  G08C2201/92 ,  G08C2201/93

Abstract: A depth-control method for home appliances in an indoor space and an associated electronic system are provided. The method includes the steps of: connecting the home appliances to a portable electronic device via one or more wireless channels; obtaining identity information for the home appliances using the portable electronic device via the one or more wireless channels; detecting sensor data associated with the portable electronic device; selecting one among a first set of the home appliances according to the sensor data; and controlling the selected home appliance using the portable electronic device.

公开(公告)号：US20240015623A1

公开(公告)日：2024-01-11

申请号：US18329779

申请日：2023-06-06

Applicant: MEDIATEK INC.

Inventor： Chun-Chia CHEN ,  Bao-Chi PENG ,  Chen-I LIAO ,  Shao-Chou HUNG ,  I-Kang FU

IPC: H04W36/08 ,  H04W36/30 ,  H04W48/20

CPC classification number: H04W36/083 ,  H04W36/30 ,  H04W48/20

Abstract: A method can include determining an initial beam configuration by a controller at a satellite in a non-terrestrial network (NTN); applying the initial beam configuration to control an antenna array to transmit a beam to cover a target service area; determining subsequent beam configurations, by the controller, corresponding to a sequence of locations along an orbit of the satellite; and applying the subsequent beam configurations at each of the sequence of locations successively to control the antenna array to transmit respective beams to cover the target service area while the satellite is flying along the orbit. The controller determines the initial beam configuration and the subsequent beam configurations in a way that a variation of beam footprints of the beams is minimized to realize a constant beam footprint corresponding to the target service area.

公开(公告)号：US20230156181A1

公开(公告)日：2023-05-18

申请号：US17685812

申请日：2022-03-03

Applicant: MEDIATEK INC.

Inventor： Chun-Chia CHEN ,  Chih-Wei HSU ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN ,  Yu-Wen HUANG

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/105 ,  H04N19/46 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: A video coding method and apparatus include receiving input data associated with a current block, determining a coding mode for the current block by disabling Geometric Partitioning Mode (GPM) when a size of the current block is greater than or equal to a threshold size, and encoding or decoding the current block according to the determined coding mode. In a high-throughput video encoder performing Rate Distortion Optimization (RDO) by parallel Processing Elements (PEs), all or partial PEs receive search range reference samples in a broadcasting form. The parallel PEs test multiple coding modes on various partitioning for the current block, decide a block partitioning structure for dividing the current block into one or more coding blocks, and decide a coding mode for each of the coding blocks.

公开(公告)号：US20220150507A1

公开(公告)日：2022-05-12

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 ,  H04N19/513 ,  H04N19/159 ,  H04N19/176

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.