公开(公告)号：US20170311003A1

公开(公告)日：2017-10-26

申请号：US15490920

申请日：2017-04-19

Applicant: MEDIATEK INC.

Inventor： Tung-Hsing Wu ,  Li-Heng Chen ,  Han-Liang Chou

IPC: H04N19/91 ,  H04N19/124 ,  H04N19/182 ,  H04N19/44

CPC classification number: H04N19/91 ,  H04N19/124 ,  H04N19/182 ,  H04N19/436 ,  H04N19/44

Abstract: An entropy encoding method includes following steps: receiving symbols of a pixel group; entropy encoding data derived from the symbols of the pixel group to generate a first bitstream portion and a second bitstream portion, wherein the first bitstream portion includes encoded magnitude data of the symbols of the pixel group, and the second bitstream portion includes encoded sign data of at least a portion of the symbols of the pixel group; and generating a bitstream segment of the pixel group by combining at least the first bitstream portion and the second bitstream portion. The pixel group includes a plurality of pixels, and the symbols of the pixel group have a plurality of symbol values of the pixels, respectively. When a first symbol value has a zero magnitude value, a sign value of the first symbol value is not entropy encoded into the second bitstream portion.

公开(公告)号：US20170223349A1

公开(公告)日：2017-08-03

申请号：US15422425

申请日：2017-02-01

Applicant: MEDIATEK INC.

Inventor： Chia-Yun Cheng ,  Han-Liang Chou ,  Yung-Chang Chang

IPC: H04N19/10 ,  H04L1/00 ,  H04N19/15

CPC classification number: H04N19/10 ,  H04L1/0018 ,  H04N19/15 ,  H04N19/182 ,  H04N19/423 ,  H04N19/436

Abstract: A video transmitting system includes a source buffer, a video encoder, a bitstream buffer, and a transmitting circuit. The source buffer receives pixel data of pixels of a video frame. The video encoder retrieve pixel data of a portion of the pixels of the video frame from the source buffer, and starts encoding the pixel data of the portion of the pixels before pixel data of a last pixel of the video frame is received by the source buffer. The bitstream buffer receives a network abstraction layer (NAL) stream from the video encoder, wherein the NAL stream is generated by encoding the pixel data of the portion of the pixels. The transmitting circuit retrieves the NAL stream from the bitstream buffer, and starts outputting the NAL stream before the pixel data of the last pixel of the video frame is encoded by the video encoder.

公开(公告)号：US20170105011A1

公开(公告)日：2017-04-13

申请号：US15210903

申请日：2016-07-15

Applicant: MEDIATEK INC.

Inventor： Li-Heng Chen ,  Tung-Hsing Wu ,  Han-Liang Chou

IPC: H04N19/186 ,  H04N19/70 ,  H04N19/44 ,  H04N19/182

CPC classification number: H04N19/176 ,  H04N19/103 ,  H04N19/136

Abstract: A method and apparatus of coding using multiple coding modes with multiple color spaces are provided. For the encoder side, a coding mode is selected from a coding mode group. A corresponding color domain is associated with the coding mode and the corresponding color domain is selected from a color-domain group including at least two different color domains. The current coding unit is then encoded in the corresponding color domain using the coding mode. Furthermore, the syntax of the corresponding color domain is signaled in current coding unit syntaxes. The different color domains may include RGB color domain and YCoCg color domain. According to another method, if the midpoint prediction (MPP) mode is selected, a current block is color transformed into another color domain and the MPP coding process is performed in said another color domain.

公开(公告)号：US20160119642A1

公开(公告)日：2016-04-28

申请号：US14887317

申请日：2015-10-19

Applicant: MEDIATEK INC.

Inventor： Tung-Hsing Wu ,  Han-Liang Chou ,  Ting-An Lin

IPC: H04N19/59 ,  H04N19/176 ,  H04N19/426 ,  H04N19/172

CPC classification number: H04N19/59 ,  H04N19/105 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/426 ,  H04N19/503 ,  H04N19/53

Abstract: An encoding method includes applying a search range constraint on a search range of a block in a current frame, and encoding the block in the current frame with pixel information in a reference frame according to inter prediction performed based on the search range of the block in the current frame, wherein a resolution of the current frame is different from a resolution of the reference frame.

Abstract translation: 编码方法包括对当前帧中的块的搜索范围应用搜索范围约束，并且根据基于块的搜索范围进行的帧间预测对参考帧中的像素信息对当前帧中的块进行编码 当前帧，其中当前帧的分辨率不同于参考帧的分辨率。

公开(公告)号：US20160014415A1

公开(公告)日：2016-01-14

申请号：US14792634

申请日：2015-07-07

Applicant: Mediatek Inc.

Inventor： Tung-Hsing Wu ,  Han-Liang Chou ,  Kun-Bin Lee

IPC: H04N19/124 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182

CPC classification number: H04N19/124 ,  H04N19/103 ,  H04N19/146 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/436

Abstract: An encoding method includes following steps: performing a wave-front parallel encoding procedure for encoding pixel data of a frame partition, wherein the frame partition comprises a plurality of block rows, each of the block rows comprises a plurality of blocks, and each of the blocks comprises a plurality of pixels; and imposing constraint on a coding mode selection of a first block of a first block row.

Abstract translation: 编码方法包括以下步骤：执行用于编码帧分区的像素数据的波前并行编码过程，其中所述帧分区包括多个块行，每个块行包括多个块，并且每个 块包括多个像素; 并且对第一块行的第一块的编码模式选择施加约束。

公开(公告)号：US09148672B2

公开(公告)日：2015-09-29

申请号：US13890088

申请日：2013-05-08

Applicant: MEDIATEK INC.

Inventor： Tung-Hsing Wu ,  Han-Liang Chou ,  Kun-Bin Lee

IPC: G06K9/36 ,  H04N19/60 ,  H04N19/91 ,  H04N19/61

CPC classification number: H04N19/60 ,  H04N19/619 ,  H04N19/91

Abstract: A method and apparatus for a multiple-channel image/video coding system are disclosed. A residue generation process is applied to the image/video data to generate residue data. A set of integer operations is applied to the residue data across the input channels to generate residue transformed data having multiple output channels. In one embodiment, the residue transformed data associated with a first output channel is related to the difference between a first residue data associated with a first input channel and a second residue data associated with a second input channel. In another embodiment, the residue transformed data associated with a second output channel is related to the second difference between a threshold and a third residue data associated with a third input channel, and wherein the threshold corresponds to the first truncated or rounded average of the first residue data and the second residue data.

Abstract translation: 公开了一种用于多通道图像/视频编码系统的方法和装置。 将残留生成处理应用于图像/视频数据以产生残差数据。 一组整数运算被应用于跨输入通道的残差数据，以产生具有多个输出通道的残差变换数据。 在一个实施例中，与第一输出通道相关联的残余变换数据与与第一输入通道相关联的第一残余数据与与第二输入通道相关联的第二残差数据之间的差异相关。 在另一个实施例中，与第二输出信道相关联的残余变换数据与第三输入信道相关联的阈值与第三残差数据之间的第二差值相关，并且其中阈值对应于第一输入信道的第一截断或舍入平均值 残差数据和第二残差数据。

公开(公告)号：US20140254949A1

公开(公告)日：2014-09-11

申请号：US14198557

申请日：2014-03-05

Applicant: MEDIATEK INC.

Inventor： Han-Liang Chou ,  Tsu-Ming Liu ,  Tung-Hsing Wu ,  Kun-Bin Lee ,  Chi-Cheng Ju

IPC: H04N19/146

CPC classification number: H04N19/146 ,  H04N19/124 ,  H04N19/176

Abstract: An image encoding method with rate control includes at least the following steps: defining a plurality of candidate bit budgets corresponding to different pre-defined maximum encoded bit lengths for one coding unit respectively; when encoding pixel data of a plurality of pixels within a current coding unit of an access unit of a frame, determining a target bit budget selected from the candidate bit budgets and allocating the target bit budget to the current coding unit; and outputting encoded pixel data of the pixels within the current coding unit that is generated from the encoder, wherein a bit length of the encoded pixel data is smaller than or equal to the target bit budget.

Abstract translation: 具有速率控制的图像编码方法至少包括以下步骤：分别为一个编码单元定义对应于不同预定义的最大编码比特长度的多个候选比特预算; 当对帧的访问单元的当前编码单元内的多个像素的像素数据进行编码时，确定从候选比特预算中选出的目标比特预算，并将目标比特预算分配给当前编码单元; 并且输出从编码器生成的当前编码单元内的像素的编码像素数据，其中编码像素数据的位长度小于或等于目标比特预算。

公开(公告)号：US20140247165A1

公开(公告)日：2014-09-04

申请号：US13784786

申请日：2013-03-04

Applicant: MEDIATEK INC.

Inventor： Ting-An Lin ,  Han-Liang Chou ,  Kun-Bin Lee ,  Yi-Hau Chen ,  Chi-Cheng Ju ,  Yen-Chieh Lai

IPC: H03M7/00

CPC classification number: H03M7/40 ,  H03M7/30 ,  H03M7/4006 ,  H03M7/4031

Abstract: A method for generating a decoded value from a codeword which is binarized utilizing a concatenated unary/k-th order Exp-Golomb code includes: identifying a first portion of the codeword, a second portion of the codeword and a third portion of the codeword; generating an offset according to the second portion; decoding the third portion to generate an index value; and generating the decoded value by adding the offset and the index value.

Abstract translation: 一种从码字生成解码值的方法，该码字使用级联的一元/第k阶Exp-Golomb码二进制化，包括：识别码字的第一部分，码字的第二部分和码字的第三部分; 根据第二部分产生偏移; 解码第三部分以产生索引值; 并通过加上偏移量和索引值来生成解码值。

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：US10602192B2

公开(公告)日：2020-03-24

申请号：US15422484

申请日：2017-02-02

Applicant: MEDIATEK INC.

Inventor： Tung-Hsing Wu ,  Li-Heng Chen ,  Han-Liang Chou

IPC: H04N7/12 ,  H04N19/91

Abstract: An entropy encoder includes an entropy encoding circuit and a size determining circuit. The entropy encoding circuit receives symbols of a pixel group, and entropy encodes data derived from the symbols of the pixel group to generate a bitstream segment which is composed of a first bitstream portion and a second bitstream portion. The first bitstream portion contains encoded magnitude data of the symbols of the pixel group, and the second bitstream portion contains encoded sign data of at least a portion of the symbols of the pixel group. The size determining circuit determines a size of a bitstream portion, wherein the bitstream portion comprises at least one of the first bitstream portion and the second bitstream portion.