公开(公告)号：US20160156938A1

公开(公告)日：2016-06-02

申请号：US15015537

申请日：2016-02-04

Applicant: MediaTek Inc.

Inventor： Chih-Ming FU ,  Ching-Yeh CHEN ,  Chia-Yang TSAI ,  Yu-Wen HUANG ,  Shaw-Min LEI

IPC: H04N19/82 ,  H04N19/157 ,  H04N19/186 ,  H04N19/176 ,  H04N19/463 ,  H04N19/96 ,  H04N19/132 ,  H04N19/117 ,  H04N19/196

CPC classification number: H04N19/82 ,  H04N19/117 ,  H04N19/132 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/463 ,  H04N19/70 ,  H04N19/96

Abstract: A method and apparatus for processing reconstructed video using in-loop filter in a video coding system are disclosed. The method uses chroma in-loop filter indication to indicate whether chroma components are processed by in-loop filter when the luma in-loop filter indication indicates that in-loop filter processing is applied to the luma component. An additional flag may be used to indicate whether the in-loop filter processing is applied to an entire picture using same in-loop filter information or each block of the picture using individual in-loop filter information. Various embodiments according to the present invention to increase efficiency are disclosed, wherein various aspects of in-loop filter information are taken into consideration for efficient coding such as the property of quadtree-based partition, boundary conditions of a block, in-loop filter information sharing between luma and chroma components, indexing to a set of in-loop filter information, and prediction of in-loop filter information.

Abstract translation: 公开了一种使用视频编码系统中的环路滤波器处理重构视频的方法和装置。 该方法使用色度环路滤波器指示来指示当亮度环路滤波器指示表明将环路滤波处理应用于亮度分量时，是否通过环路滤波器处理色度分量。 可以使用附加标志来指示使用相同的环路滤波器信息或使用各个循环过滤器信息的图像的每个块来将整个图像应用于环路滤波处理。 公开了根据本发明的提高效率的各种实施例，其中考虑到环路滤波器信息的各个方面以进行有效的编码，例如基于四叉树的分区的属性，块的边界条件，环路滤波器信息 在亮度和色度分量之间共享，索引到一组环路滤波器信息，以及对环路滤波器信息的预测。

公开(公告)号：US20230133061A1

公开(公告)日：2023-05-04

申请号：US17515909

申请日：2021-11-01

Applicant: MEDIATEK INC.

Inventor： Shaw-Min LEI ,  Yiou-Wen CHENG ,  Liang-Che SUN

IPC: H04M9/08 ,  G10K11/178

Abstract: An audio device is provided. The audio device includes processing circuitry which is connected to a loudspeaker and a microphone. The processing circuitry is configured to play an echo reference signal from a far end on the loudspeaker, and perform an acoustic echo cancellation (AEC) process using the echo reference signal and an acoustic signal received by the microphone using an AEC adaptive filter. The processing circuitry repeatedly determines a first status of the loudspeaker according to a relation between the played echo reference signal and the received acoustic signal, and transmits a first status signal indicating the first status of the loudspeaker to the far end through a cloud network.

公开(公告)号：US20210281846A1

公开(公告)日：2021-09-09

申请号：US16332435

申请日：2016-09-13

Applicant: MEDIATEK INC.

Inventor： Shih-Ta HSIANG ,  Shaw-Min LEI ,  Yu-Wen HUANG ,  Yu-Chen SUN

IPC: H04N19/126 ,  H04N19/176 ,  H04N19/167 ,  H04N19/70

Abstract: A method and apparatus for processing transform blocks of video data performed by a video encoder or a video decoder are disclosed. A plurality of quantization matrix sets are determined, where each quantization matrix set includes one or more quantization matrices corresponding to different block types. For a transform block corresponding to a current block in a current picture, a selected quantization matrix set is determined from the plurality of quantization matrix sets for the transform block. Quantization process or de-quantization process is applied to the transform block using a corresponding quantization matrix from the selected quantization matrix set.

公开(公告)号：US20150222922A1

公开(公告)日：2015-08-06

申请号：US14688173

申请日：2015-04-16

Applicant: MediaTek Inc

Inventor： Yu-Pao TSAI ,  Chih-Ming FU ,  Jian-Liang LIN ,  Yu-Wen HUANG ,  Shaw-Min LEI

IPC: H04N19/56 ,  H04N19/513 ,  H04N19/172

CPC classification number: H04N19/56 ,  H04N19/172 ,  H04N19/513

Abstract: The invention provides a motion prediction method. First, a plurality of candidate units corresponding to a current unit of a current frame is determined. A plurality of motion vectors of the candidate units is then obtained. A plurality of scaling factors of the candidate units is then calculated according to a plurality of respective temporal distances depending on a plurality of reference frames of the motion vectors. The motion vectors of the candidate units are then scaled according to the scaling factors to obtain a plurality of scaled motion vectors. The scaled motion vectors are ranked, and a subset of highest ranking motion vectors are identified to be included in a candidate set. Finally, a motion vector predictor for motion prediction of the current unit is then selected from the candidate units.

Abstract translation: 本发明提供一种运动预测方法。 首先，确定与当前帧的当前单位对应的多个候选单元。 然后获得候选单元的多个运动向量。 然后根据多个运动矢量的参考帧，根据多个相应的时间距离来计算候选单元的多个缩放因子。 然后根据缩放因子对候选单元的运动矢量进行缩放以获得多个缩放运动矢量。 对缩放的运动矢量进行排序，并且将最高排名的运动矢量的子集识别为包括在候选组中。 最后，从候选单元中选择用于当前单元的运动预测的运动矢量预测器。

公开(公告)号：US20160205403A1

公开(公告)日：2016-07-14

申请号：US15075004

申请日：2016-03-18

Applicant: MediaTek Inc.

Inventor： Yu-Wen HUANG ,  Ching-Yeh CHEN ,  Chih-Ming FU ,  Chih-Wei HSU ,  Yu-Lin CHANG ,  Tzu-Der CHUANG ,  Shaw-Min LEI

IPC: H04N19/174 ,  H04N19/18 ,  H04N19/70 ,  H04N19/13 ,  H04N19/96 ,  H04N19/103 ,  H04N19/159 ,  H04N19/176 ,  H04N19/126 ,  H04N19/119

CPC classification number: H04N19/174 ,  H04N19/103 ,  H04N19/119 ,  H04N19/126 ,  H04N19/13 ,  H04N19/146 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/463 ,  H04N19/70 ,  H04N19/96

Abstract: In one implementation, a method codes video pictures, in which each of the video pictures is partitioned into LCUs (largest coding units). The method operates by receiving a current LCU, partitioning the current LCU adaptively to result in multiple leaf CUs, determining whether a current leaf CU has at least one nonzero quantized transform coefficient according to both Prediction Mode (PredMode) and Coded Block Flag (CBF), and incorporating quantization parameter information for the current leaf CU in a video bitstream, if the current leaf CU has at least one nonzero quantized transform coefficient. If the current leaf CU has no nonzero quantized transform coefficient, the method excludes the quantization parameter information for the current leaf CU in the video bitstream.

Abstract translation: 在一个实现中，一种方法对视频图像进行编码，其中每个视频图像被分割成LCU（最大编码单元）。 该方法通过接收当前LCU进行操作，自适应地划分当前LCU以产生多个叶片，根据预测模式（PredMode）和编码块标志（CBF）确定当前叶CU是否具有至少一个非零量化变换系数， 并且如果当前叶CU具有至少一个非零量化变换系数，则将当前叶CU的量化参数信息合并到视频比特流中。 如果当前叶CU没有非零量化变换系数，则该方法排除了视频比特流中当前叶CU的量化参数信息。

公开(公告)号：US20150350648A1

公开(公告)日：2015-12-03

申请号：US14822026

申请日：2015-08-10

Applicant: MediaTek Inc.

Inventor： Chih-Ming FU ,  Ching-Yeh CHEN ,  Chia-Yang TSAI ,  Yu-Wen HUANG ,  Shaw-Min LEI

IPC: H04N19/117 ,  H04N19/157 ,  H04N19/96 ,  H04N19/176 ,  H04N19/174

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 in-loop processing are disclosed. Input data to the in-loop processing is received and the input data corresponds to reconstructed or reconstructed-and-deblocked coding units of the picture. The input data is divided into multiple filter units and each filter unit includes one or more boundary-aligned reconstructed or reconstructed-and-deblocked coding units. A candidate filter is then selected from a candidate filter set for the in-loop processing. The candidate filter set comprises at least two candidate filters the said in-loop processing corresponding to adaptive loop filter (ALF), adaptive offset (AO), or adaptive clipping (AC). The in-loop processing is then applied to one of the filter units to generate a processed filter unit by using the candidate filter selected to all boundary-aligned reconstructed or reconstructed-and-deblocked coding units in said one of the filter units.

Abstract translation: 公开了一种使用循环处理来处理编码视频的方法和装置。 接收对于循环处理的输入数据，并且输入数据对应于图像的重建或重构和解块编码单元。 输入数据被分成多个滤波器单元，并且每个滤波器单元包括一个或多个边界对齐的重构或重构和解块编码单元。 然后从用于进行循环处理的候选滤波器组中选择候选滤波器。 候选滤波器组包括与自适应环路滤波器（ALF），自适应偏移（AO）或自适应限幅（AC）相对应的所述循环中的至少两个候选滤波器。 然后将该循环处理应用于一个滤波器单元，以通过使用对所述滤波器单元中的所述一个滤波器单元中的所有边界对准的重构或重构和解块编码单元选择的候选滤波器来生成经处理的滤波器单元。

公开(公告)号：US20150326886A1

公开(公告)日：2015-11-12

申请号：US14348668

申请日：2012-10-10

Applicant: MediaTek Inc.

Inventor： Yi-Hau CHEN ,  Kun-Bin LEE ,  Chi-Cheng JU ,  Yu-Wen HUANG ,  Shaw-Min LEI ,  Chih-Ming FU ,  Ching-Yeh CHEN ,  Chia-Yang TSAI ,  Chih-Wei HSU

IPC: H04N19/82 ,  H04N19/61 ,  H04N19/176 ,  H04N19/107 ,  H04N19/117

CPC classification number: H04N19/82 ,  H04N19/107 ,  H04N19/117 ,  H04N19/176 ,  H04N19/426 ,  H04N19/436 ,  H04N19/61

Abstract: A method and apparatus for loop processing of reconstructed video in an encoder system are disclosed. The loop processing comprises an in-loop filter and one or more adaptive filters. The filter parameters for the adaptive filter are derived from the pre-in-loop video data so that the adaptive filter processing can be applied to the in-loop processed video data without the need of waiting for completion of the in-loop filter processing for a picture or an image unit. In another embodiment, two adaptive filters derive their respective adaptive filter parameters based on the same pre-in-loop video data. In yet another embodiment, a moving window is used for image-unit-based coding system incorporating in-loop filter and one or more adaptive filters. The in-loop filter and the adaptive filter are applied to a moving window of pre-in-loop video data comprising one or more sub-regions from corresponding one or more image units.

Abstract translation: 公开了一种用于编码器系统中的重建视频的循环处理的方法和装置。 环路处理包括一个环路滤波器和一个或多个自适应滤波器。 用于自适应滤波器的滤波器参数是从循环前视频数据导出的，使得自适应滤波处理可以应用于环路内处理的视频数据，而不需要等待完成环路滤波处理 图片或图像单位。 在另一个实施例中，两个自适应滤波器基于相同的预循环视频数据导出它们各自的自适应滤波器参数。 在另一个实施例中，移动窗口用于并入基于循环滤波器和一个或多个自适应滤波器的基于图像单元的编码系统。 环路滤波器和自适应滤波器被应用到包括来自相应的一个或多个图像单元的一个或多个子区域的预循环视频数据的移动窗口。

公开(公告)号：US20150293599A1

公开(公告)日：2015-10-15

申请号：US14644407

申请日：2015-03-11

Applicant: MediaTek Inc.

Inventor： Xin-Wei SHIH ,  Chao-Ling HSU ,  Shaw-Min LEI

IPC: G06F3/01 ,  G06F3/041

CPC classification number: G06F3/017 ,  G06F3/041 ,  G06F3/04847 ,  G06F2203/04101

Abstract: A portable electronic device including an ultrasound transmitter, an ultrasound receiver, and a processing unit is provided. The ultrasound transmitter sends ultrasonic signals, while the ultrasound receiver receives reflected ultrasonic signals from an object. The ultrasound transmitter and the ultrasound receiver are disposed to form a reference axis. The processing unit processes the reflected ultrasonic signals to obtain a time-frequency distribution thereof, and determines a 1D gesture corresponding to projection loci of movements of the object on the reference axis according to the time-frequency distribution.

Abstract translation: 提供了包括超声波发射器，超声波接收器和处理单元的便携式电子设备。 超声波发射器发送超声波信号，而超声波接收器从物体接收反射的超声波信号。 超声波发射器和超声波接收器被设置成形成参考轴。 处理单元处理反射的超声波信号以获得其时间 - 频率分布，并且根据时间 - 频率分布确定与参考轴上的对象的移动的投影轨迹相对应的1D手势。