公开(公告)号：US10904577B2

公开(公告)日：2021-01-26

申请号：US16194396

申请日：2018-11-19

Applicant: MEDIATEK INC.

Inventor： Li-Heng Chen ,  Chung-Hua Tsai ,  Tung-Hsing Wu ,  Lien-Fei Chen ,  Yu-Kun Lin ,  Yi-Hsin Huang ,  Han-Liang Chou

IPC: H04N19/184 ,  H04N19/85 ,  H04N19/70

Abstract: A video compression system includes a video encoder and a bitstream processing circuit. The video encoder is hardware that performs hardware video encoding upon frames to generate a first bitstream. The first bitstream is output from an entropy encoding circuit of the video encoder. The bitstream processing circuit performs a bitstream post-processing operation upon the first bitstream to produce a second bitstream that is different from the first bitstream, and outputs the second bitstream as a compression output of the frames.

公开(公告)号：US20150237378A1

公开(公告)日：2015-08-20

申请号：US14619081

申请日：2015-02-11

Applicant: MEDIATEK INC.

Inventor： Tung-Hsing Wu ,  Kun-Bin Lee ,  Yi-Hsin Huang

IPC: H04N19/80 ,  H04N19/172 ,  H04N19/126

CPC classification number: H04N19/149 ,  H04N19/117 ,  H04N19/17 ,  H04N19/82

Abstract: A method for controlling sample adaptive offset (SAO) filtering includes: generating a first SAO decision for pixels in a first partial region of a first frame based at least partly on a cost function that uses a first weighting parameter; and generating a second SAO decision for pixels in a second partial region of the first frame based at least partly on the cost function that uses a second weighting parameter. The second partial region is different from the first partial region, and the second weighting parameter is different from the first weighting parameter.

Abstract translation: 用于控制采样自适应偏移（SAO）滤波的方法包括：至少部分地基于使用第一加权参数的成本函数，为第一帧的第一部分区域中的像素生成第一SAO决定; 以及至少部分地基于使用第二加权参数的成本函数，为所述第一帧的第二部分区域中的像素生成第二SAO决定。 第二部分区域与第一部分区域不同，第二加权参数与第一加权参数不同。

公开(公告)号：US20150103883A1

公开(公告)日：2015-04-16

申请号：US14492082

申请日：2014-09-22

Applicant: MEDIATEK INC.

Inventor： Tung-Hsing Wu ,  Kun-Bin Lee ,  Yi-Hsin Huang

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/122 ,  H04N19/567

CPC classification number: H04N19/119 ,  H04N19/11 ,  H04N19/122 ,  H04N19/154 ,  H04N19/176

Abstract: An intra prediction method includes at least the following steps: performing a distortion estimation to evaluate a distortion value of a specific block under an intra prediction mode and a transform unit size; using the evaluated distortion value to set a distortion value of the specific block under a first block configuration, the intra prediction mode and the transform unit size; and using the evaluated distortion value to set a distortion value of the specific block under a second block configuration, the intra prediction mode, and the transform unit size. The first block configuration represents a first block size, and the second block configuration represents a second block size different from the first block size.

Abstract translation: 帧内预测方法至少包括以下步骤：执行失真估计以评估在帧内预测模式和变换单位大小下的特定块的失真值; 使用所评估的失真值来设置第一块配置下的特定块的失真值，帧内预测模式和变换单元大小; 并且使用所评估的失真值来设置第二块配置下的特定块的失真值，帧内预测模式和变换单元大小。 第一块配置表示第一块大小，第二块配置表示与第一块大小不同的第二块大小。

公开(公告)号：US20210195207A1

公开(公告)日：2021-06-24

申请号：US17190409

申请日：2021-03-03

Applicant: MEDIATEK INC.

Inventor： Li-Heng Chen ,  Tung-Hsing Wu ,  Yi-Hsin Huang ,  Lien-Fei Chen ,  Ting-An Lin ,  Han-Liang Chou

IPC: H04N19/15 ,  H04N19/105 ,  H04N19/172 ,  H04N19/159 ,  H04N19/184 ,  H04N19/463

Abstract: A video encoding apparatus includes a data buffer and a video encoding circuit. Encoding of a first frame includes: deriving reference pixels of a reference frame from reconstructed pixels of the first frame, respectively, and storing reference pixel data into the data buffer for inter prediction, wherein the reference pixel data include information of pixel values of the reference pixels. Encoding of a second frame includes performing prediction upon a coding unit in the second frame to determine a target predictor for the coding unit. The prediction performed upon the coding unit includes: determining the target predictor for the coding unit according to whether a search range on the reference frame for finding a predictor of the coding unit under an inter prediction mode includes at least one reference pixel of the reference frame that is not accessible to the video encoding circuit.

公开(公告)号：US20180199035A1

公开(公告)日：2018-07-12

申请号：US15913933

申请日：2018-03-07

Applicant: MEDIATEK INC.

Inventor： Tung-Hsing Wu ,  Kun-Bin Lee ,  Yi-Hsin Huang

IPC: H04N19/119 ,  H04N19/11 ,  H04N19/176 ,  H04N19/122 ,  H04N19/154

CPC classification number: H04N19/119 ,  H04N19/11 ,  H04N19/122 ,  H04N19/154 ,  H04N19/176

Abstract: An intra prediction method includes: based on a specific transform unit size, estimating a plurality of best intra prediction modes of a plurality of second blocks, wherein a first block is composed of the second blocks, the first block supports a first block configuration and a second block configuration, the first block configuration represents a size of the first block, and the second block configuration represents a size of each second block; and checking similarity of the best intra prediction modes of the second blocks for selectively replacing the second block configuration by the first block configuration for the first block.

公开(公告)号：US20180020221A1

公开(公告)日：2018-01-18

申请号：US15641224

申请日：2017-07-04

Applicant: MEDIATEK INC.

Inventor： Ming-Long Wu ,  Tung-Hsing Wu ,  Li-Heng Chen ,  Ting-An Lin ,  Yi-Hsin Huang ,  Chung-Hua Tsai ,  Chia-Yun Cheng ,  Han-Liang Chou ,  Yung-Chang Chang

IPC: H04N19/13 ,  H04N21/2665 ,  H04N21/2365 ,  H04N21/2343 ,  H04N19/70 ,  H04N19/44 ,  H04N19/172 ,  H04N21/845 ,  H04N19/124

CPC classification number: H04N19/13 ,  H04N19/124 ,  H04N19/172 ,  H04N19/174 ,  H04N19/18 ,  H04N19/44 ,  H04N19/70 ,  H04N21/234363 ,  H04N21/2365 ,  H04N21/2665 ,  H04N21/8456

Abstract: A video encoder has a processing circuit and a universal binary entropy (UBE) syntax encoder. The processing circuit processes pixel data of a video frame to generate encoding-related data, wherein the encoding-related data comprise at least quantized transform coefficients. The UBE syntax encoder processes a plurality of syntax elements to generate UBE syntax data. The encoding-related data are represented by the syntax elements. The processing circuit operates according to a video coding standard. The video coding standard supports arithmetic encoding. The UBE syntax data contain no arithmetic-encoded syntax data.

公开(公告)号：US11166029B2

公开(公告)日：2021-11-02

申请号：US17190409

申请日：2021-03-03

Applicant: MEDIATEK INC.

Inventor： Li-Heng Chen ,  Tung-Hsing Wu ,  Yi-Hsin Huang ,  Lien-Fei Chen ,  Ting-An Lin ,  Han-Liang Chou

IPC: H04N19/15 ,  H04N19/105 ,  H04N19/184 ,  H04N19/463 ,  H04N19/172 ,  H04N19/159

Abstract: A video encoding apparatus includes a data buffer and a video encoding circuit. Encoding of a first frame includes: deriving reference pixels of a reference frame from reconstructed pixels of the first frame, respectively, and storing reference pixel data into the data buffer for inter prediction, wherein the reference pixel data include information of pixel values of the reference pixels. Encoding of a second frame includes performing prediction upon a coding unit in the second frame to determine a target predictor for the coding unit. The prediction performed upon the coding unit includes: determining the target predictor for the coding unit according to whether a search range on the reference frame for finding a predictor of the coding unit under an inter prediction mode includes at least one reference pixel of the reference frame that is not accessible to the video encoding circuit.

公开(公告)号：US10972738B2

公开(公告)日：2021-04-06

申请号：US16367237

申请日：2019-03-27

Applicant: MEDIATEK INC.

Inventor： Li-Heng Chen ,  Tung-Hsing Wu ,  Yi-Hsin Huang ,  Lien-Fei Chen ,  Ting-An Lin ,  Han-Liang Chou

IPC: H04N19/159 ,  H04N19/15 ,  H04N19/105 ,  H04N19/172 ,  H04N19/184 ,  H04N19/463

Abstract: A video encoding apparatus includes a data buffer and a video encoding circuit. Encoding of a first frame includes: deriving reference pixels of a reference frame from reconstructed pixels of the first frame, respectively, and storing reference pixel data into the data buffer for inter prediction, wherein the reference pixel data include information of pixel values of the reference pixels. Encoding of a second frame includes performing prediction upon a coding unit in the second frame to determine a target predictor for the coding unit. The prediction performed upon the coding unit includes: checking if a search range on the reference frame for finding a predictor of the coding unit under an inter prediction mode includes at least one reference pixel of the reference frame that is not accessible to the video encoding circuit, and determining the target predictor for the coding unit according to a checking result.

公开(公告)号：US20190306510A1

公开(公告)日：2019-10-03

申请号：US16367237

申请日：2019-03-27

Applicant: MEDIATEK INC.

Inventor： Li-Heng Chen ,  Tung-Hsing Wu ,  Yi-Hsin Huang ,  Lien-Fei Chen ,  Ting-An Lin ,  Han-Liang Chou

IPC: H04N19/15 ,  H04N19/105 ,  H04N19/463 ,  H04N19/159 ,  H04N19/184 ,  H04N19/172

Abstract: A video encoding apparatus includes a data buffer and a video encoding circuit. Encoding of a first frame includes: deriving reference pixels of a reference frame from reconstructed pixels of the first frame, respectively, and storing reference pixel data into the data buffer for inter prediction, wherein the reference pixel data include information of pixel values of the reference pixels. Encoding of a second frame includes performing prediction upon a coding unit in the second frame to determine a target predictor for the coding unit. The prediction performed upon the coding unit includes: checking if a search range on the reference frame for finding a predictor of the coding unit under an inter prediction mode includes at least one reference pixel of the reference frame that is not accessible to the video encoding circuit, and determining the target predictor for the coding unit according to a checking result.

公开(公告)号：US10412390B2

公开(公告)日：2019-09-10

申请号：US15641224

申请日：2017-07-04

Applicant: MEDIATEK INC.

Inventor： Ming-Long Wu ,  Tung-Hsing Wu ,  Li-Heng Chen ,  Ting-An Lin ,  Yi-Hsin Huang ,  Chung-Hua Tsai ,  Chia-Yun Cheng ,  Han-Liang Chou ,  Yung-Chang Chang

IPC: H04N19/13 ,  H04N19/70 ,  H04N19/44 ,  H04N21/23 ,  H04N21/84 ,  H04N19/124 ,  H04N19/172 ,  H04N19/18 ,  H04N19/174 ,  H04N21/2365 ,  H04N21/2665 ,  H04N21/2343 ,  H04N21/845

Abstract: A video encoder has a processing circuit and a universal binary entropy (UBE) syntax encoder. The processing circuit processes pixel data of a video frame to generate encoding-related data, wherein the encoding-related data comprise at least quantized transform coefficients. The UBE syntax encoder processes a plurality of syntax elements to generate UBE syntax data. The encoding-related data are represented by the syntax elements. The processing circuit operates according to a video coding standard. The video coding standard supports arithmetic encoding. The UBE syntax data contain no arithmetic-encoded syntax data.