公开(公告)号：US10771163B2

公开(公告)日：2020-09-08

申请号：US16163581

申请日：2018-10-18

申请人： MEDIATEK INC.

发明人： Min-Hao Chiu ,  Chia-Yun Cheng ,  Yung-Chang Chang

IPC分类号： H04B10/69 ,  H04N19/70 ,  H04N19/184 ,  G06T9/00 ,  H04N19/127 ,  H04N19/44 ,  H04N19/42 ,  H04N19/17

摘要： A decoding apparatus is used for decoding region of interest (ROI) regions in an image, and includes a storage device, a pre-processing circuit, a decoding circuit, and an information fetching circuit. The pre-processing circuit performs a syntax pre-parsing operation upon a bitstream to obtain necessary information of the ROI regions, and stores the necessary information into the storage device. The decoding circuit performs a decoding operation upon the bitstream to decode the ROI regions, wherein the decoding operation includes syntax parsing of the bitstream. The information fetching circuit reads and analyzes the necessary information, and delivers at least a portion of the necessary information to the decoding circuit. A processing time of obtaining necessary information of one ROI region at the pre-processing circuit overlaps a processing time of decoding another ROI region at the decoding circuit.

公开(公告)号：US10244248B2

公开(公告)日：2019-03-26

申请号：US15438774

申请日：2017-02-22

申请人： MEDIATEK INC.

发明人： Min-Hao Chiu ,  Chia-Yun Cheng ,  Yung-Chang Chang

IPC分类号： H04N19/44 ,  H04N19/436 ,  H04N19/61

摘要： A residual processing circuit has a single-path pipeline and a single-path controller. The single-path pipeline has an inverse scan (IS) circuit, an inverse quantization (IQ) circuit and an inverse transform (IT) circuit arranged to process a current non-zero residual data block in a pipeline manner. The current non-zero residual data block is at least a portion of a transform unit. The single-path controller controls pipelined processing of the current non-zero residual data block at the single-path pipeline. The single-path controller instructs the IS circuit to start IS processing of a next non-zero residual data block before the IT circuit finishes a first half of IT processing of the current non-zero residual data block.

公开(公告)号：US11917144B2

公开(公告)日：2024-02-27

申请号：US17844034

申请日：2022-06-19

申请人： MediaTek Inc.

发明人： Yueh-Lin Wu ,  Min-Hao Chiu ,  Yen-Chieh Huang

IPC分类号： H04N19/159 ,  H04N19/82 ,  H04N19/117 ,  H04N19/176

CPC分类号： H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/82

摘要： Various schemes for realizing efficient in-loop filtering are described, manifested in low latency and reduced hardware cost for an in-loop filter comprising at least two filtering stages. An apparatus receives pixel data of a current block of a picture and one or more neighboring blocks thereof, based on which the apparatus performs a filtering operation and generates a filtered block that includes completely filtered sub-blocks and partially filtered sub-blocks. The apparatus further outputs an output block that includes the completely filtered sub-blocks as well as a respective portion of each of the partially filtered sub-blocks, wherein the respective portion is adjacent to one of the completely filtered sub-blocks.

公开(公告)号：US20230412800A1

公开(公告)日：2023-12-21

申请号：US17844034

申请日：2022-06-19

申请人： MediaTek Inc.

发明人： Yueh-Lin Wu ,  Min-Hao Chiu ,  Yen-Chieh Huang

IPC分类号： H04N19/117 ,  H04N19/176 ,  H04N19/82 ,  H04N19/159

CPC分类号： H04N19/117 ,  H04N19/176 ,  H04N19/82 ,  H04N19/159

摘要： Various schemes for realizing efficient in-loop filtering are described, manifested in low latency and reduced hardware cost for an in-loop filter comprising at least two filtering stages. An apparatus receives pixel data of a current block of a picture and one or more neighboring blocks thereof, based on which the apparatus performs a filtering operation and generates a filtered block that includes completely filtered sub-blocks and partially filtered sub-blocks. The apparatus further outputs an output block that includes the completely filtered sub-blocks as well as a respective portion of each of the partially filtered sub-blocks, wherein the respective portion is adjacent to one of the completely filtered sub-blocks.

公开(公告)号：US10003823B2

公开(公告)日：2018-06-19

申请号：US15007232

申请日：2016-01-27

申请人： MEDIATEK INC.

发明人： Min-Hao Chiu ,  Yung-Chang Chang

IPC分类号： H04N19/70 ,  H04N19/12

CPC分类号： H04N19/70 ,  H04N19/12

摘要： A video decoder has a first processing circuit and a second processing circuit. A shared storage device is accessible to the first processing circuit and the second processing circuit. The first processing circuit performs a first decoding operation according to data access of the shared storage device. The second processing circuit performs a second decoding operation according to data access of the shared storage device. The first decoding operation is at least a portion of a first decoding function complying with a first video coding standard, and the second decoding operation is at least a portion of a second decoding function complying with a second video coding standard different from the first video coding standard.

公开(公告)号：US20160227240A1

公开(公告)日：2016-08-04

申请号：US15007232

申请日：2016-01-27

申请人： MEDIATEK INC.

发明人： Min-Hao Chiu ,  Yung-Chang Chang

IPC分类号： H04N19/44 ,  H04N19/423 ,  H04N19/70

CPC分类号： H04N19/70 ,  H04N19/12

摘要： A video decoder has a first processing circuit and a second processing circuit. A shared storage device is accessible to the first processing circuit and the second processing circuit. The first processing circuit performs a first decoding operation according to data access of the shared storage device. The second processing circuit performs a second decoding operation according to data access of the shared storage device. The first decoding operation is at least a portion of a first decoding function complying with a first video coding standard, and the second decoding operation is at least a portion of a second decoding function complying with a second video coding standard different from the first video coding standard.

摘要翻译： 视频解码器具有第一处理电路和第二处理电路。 共享存储设备可由第一处理电路和第二处理电路访问。 第一处理电路根据共享存储装置的数据访问执行第一解码操作。 第二处理电路根据共享存储装置的数据访问执行第二解码操作。 第一解码操作是符合第一视频编码标准的第一解码功能的至少一部分，并且第二解码操作是符合与第一视频编码不同的第二视频编码标准的第二解码功能的至少一部分 标准。

公开(公告)号：US10805611B2

公开(公告)日：2020-10-13

申请号：US15782886

申请日：2017-10-13

申请人： MEDIATEK INC.

发明人： Min-Hao Chiu ,  Hsiu-Yi Lin ,  Chia-yun Cheng ,  Chih-Ming Wang ,  Yung-Chang Chang

IPC分类号： H04N19/159 ,  H04N19/577 ,  H04N19/70 ,  H04N19/172 ,  H04N19/105 ,  H04N19/52

摘要： A method and apparatus for video encoding or decoding used by a video encoder or decoder respectively. In one method, input data associated with a video sequence are received. A current sequence header for a current picture is determined. Whether the current sequence header corresponds to a first sequence header or a second sequence header is determined. If the current sequence header corresponds to the second sequence header, one or more syntax values of a syntax set associated with the first sequence header are assigned to corresponding one or more syntax values of the syntax set associated with the current sequence header. The current picture is then encoded or decoded according to the current sequence header.

公开(公告)号：US10298951B2

公开(公告)日：2019-05-21

申请号：US15832959

申请日：2017-12-06

申请人： MEDIATEK INC.

发明人： Min-Hao Chiu ,  Chia-yun Cheng ,  Yung-Chang Chang

IPC分类号： H04N19/513 ,  H04N19/55 ,  H04N19/52 ,  H04N19/573

摘要： A method and apparatus for video encoding or decoding used by an AVS2 (Second Generation of Audio Video Coding Standard) video encoder or decoder respectively are disclosed. According to this method, first motion vectors associated with spatial neighboring blocks of a current block are determined. For each spatial neighboring block, a value of 1 is assigned to a first BlockDistance associated with the spatial neighboring block if a corresponding first reference picture is a G picture or GB picture. Motion vector predictor candidates are derived from the first motion vectors by scaling each first motion vector according to a corresponding first BlockDistance and a current BlockDistance. A final motion vector predictor is determined among the motion vector predictor candidates. The current motion vector is encoded or decoded using the final motion vector predictor

公开(公告)号：US09906801B2

公开(公告)日：2018-02-27

申请号：US15139345

申请日：2016-04-27

申请人： MEDIATEK INC.

发明人： Min-Hao Chiu ,  Chia-Yun Cheng ,  Chun-Chia Chen

IPC分类号： H04N19/176 ,  H04N19/129 ,  H04N19/12 ,  H04N19/124 ,  H04N19/122 ,  H04N19/13

CPC分类号： H04N19/176 ,  H04N19/12 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13

摘要： An exemplary video decoding apparatus includes a first decoding unit configured for decoding a first encoded block to generate first residual values, a first detecting unit configured for detecting whether all of the first residual values have a same first value, a first processing circuit configured for processing the first residual values to generate first processed residual values, and a second processing circuit configured for generating a decoded block corresponding to the first encoded block. When all of the first residual values have the same first value, the first detecting unit controls the second processing circuit to generate the decoded block without referring to the first processed residual values.

公开(公告)号：US20140044165A1

公开(公告)日：2014-02-13

申请号：US13781770

申请日：2013-03-01

申请人： MEDIATEK INC.

发明人： Min-Hao Chiu ,  Yung-Chang Chang

IPC分类号： H04N7/26

CPC分类号： H04N19/129 ,  H04N19/176 ,  H04N19/423 ,  H04N19/44

摘要： A method and apparatus for decoding two-level scanned transform coefficients corresponding to a transform unit (TU) are disclosed. The TU is divided into sub-blocks and the transform coefficients of the TU are scanned across the sub-blocks according to a first scan pattern, and each sub-block is scanned according to a second scan pattern. In one embodiment, the sub-blocks of the transform coefficients received from the variable length decoding are stored in an inverse scan buffer (or TC buffer) and the transform coefficients are retrieved from the inverse scan buffer row-by-row or column-by-column in a selected direction after a corresponding row or column of the transform coefficients is fully received. In a system incorporating an embodiment of the present invention, at least a leading row or a leading column of the transform coefficients is available in the selected direction before a last sub-block of the transform coefficients arrives.

摘要翻译： 公开了一种用于解码对应于变换单元（TU）的两级扫描变换系数的方法和装置。 TU被划分为子块，并且根据第一扫描模式跨越子块扫描TU的变换系数，并且根据第二扫描模式来扫描每个子块。 在一个实施例中，从可变长度解码接收的变换系数的子块被存储在反向扫描缓冲器（或TC缓冲器）中，并且逐行或逐列从逆扫描缓冲器检索变换系数 在完全接收到变换系数的相应行或列之后的所选方向上的列。 在结合了本发明的实施例的系统中，在变换系数的最后一个子块到达之前，变换系数的至少一个前导行或前导列在所选方向上可用。