公开(公告)号：US20170188033A1

公开(公告)日：2017-06-29

申请号：US15386011

申请日：2016-12-21

Applicant: MEDIATEK INC.

Inventor： Hsiu-Yi LIN ,  Ping CHAO ,  Ming-Long WU ,  Chia-Yun CHENG ,  Chih-Ming WANG ,  Yung-Chang CHANG

IPC: H04N19/159 ,  H04L12/26 ,  H04N19/433 ,  H04N19/96 ,  H04N19/91

CPC classification number: H04N19/159 ,  H04L43/0894 ,  H04N19/433 ,  H04N19/91 ,  H04N19/96

Abstract: A method and apparatus of reusing reference data for video decoding are disclosed. Motion information associated with motion vectors for coded blocks processed after the current block are derived without storing decoded residuals associated with the coded blocks. Reuse information regarding reference data required for Inter prediction or Intra block copy of the coded blocks is determined based on the motion information. If the current block is coded in the Inter prediction mode or the Intra block copy mode, whether required reference data for the current block are in an internal memory is determined and the reference data are fetched from an external memory to the internal memory if the required reference data are not stored in the internal memory. The reference data in the internal memory is managed according to the reuse information to reduce data transferring between the external memory and the internal memory.

公开(公告)号：US20150215432A1

公开(公告)日：2015-07-30

申请号：US14546213

申请日：2014-11-18

Applicant: MediaTek Inc.

Inventor： Chi-Cheng JU ,  Chia-Yun CHENG ,  Yung-Chang CHANG ,  Chih-Ming WANG

IPC: H04L29/06 ,  H04B1/66

CPC classification number: H04L69/04 ,  H03M7/3059 ,  H04L69/22

Abstract: A transmitter device includes a processing unit and a compression unit. The processing unit obtains a branch of data and partitions the branch of data into a plurality of snippets. Each snippet includes a group of data. The compression unit compresses each snippet into a plurality of packets according to value of each datum included in the corresponding snippet. The compression unit compares the value of each datum with a first threshold value to generate a first packet. The first packet includes first information indicating which data included in the corresponding snippet has the corresponding value not equal to the first threshold value. The compression unit further generates the remaining packets according to the first information.

Abstract translation: 发射机装置包括处理单元和压缩单元。 处理单元获得数据分支，并将数据分支划分成多个片段。 每个片段都包含一组数据。 压缩单元根据包括在相应片段中的每个数据的值将每个片段压缩成多个分组。 压缩单元将每个数据的值与第一阈值进行比较以生成第一分组。 第一分组包括指示包括在相应片段中的哪个数据具有不等于第一阈值的对应值的第一信息。 压缩单元还根据第一信息生成剩余的分组。

公开(公告)号：US20160227216A1

公开(公告)日：2016-08-04

申请号：US14997691

申请日：2016-01-18

Applicant: MediaTek Inc.

Inventor： Chia-Yun CHENG ,  Sheng-Jen WANG ,  Yung-Chang CHANG

IPC: H04N19/127 ,  H04N19/44 ,  H04N19/70 ,  H04N19/174 ,  H04N19/172

CPC classification number: H04N19/44 ,  H04N19/174 ,  H04N19/42 ,  H04N19/70 ,  H04N19/91

Abstract: An apparatus for multi-standard bin decoding in a video decoder for decoding two video coded in two different video coding standards is disclosed. The apparatus includes a first bin decoder to decode one or more first bin strings, a second bin decoder to decode one or more second bin strings, a standard change control module coupled to the first bin decoder and the second bin decoder and a system controller coupled to the standard change control module, the first bin decoder and the second bin decoder. The standard change control module or the system controller selects either a next slice or picture to be decoded by the first bin decoder or the second bin decoder based on one or more control parameters including the decoding time information.

Abstract translation: 公开了一种用于对以两种不同视频编码标准编码的两个视频进行解码的视频解码器中的多标准bin解码装置。 该装置包括用于解码一个或多个第一bin串的第一bin解码器，用于解码一个或多个第二bin串的第二bin解码器，耦合到第一bin解码器和第二bin解码器的标准变化控制模块和耦合到 到标准变换控制模块，第一bin解码器和第二bin解码器。 标准变更控制模块或系统控制器基于包括解码时间信息的一个或多个控制参数来选择由第一bin解码器或第二bin解码器解码的下一个片或图片。

公开(公告)号：US20190289320A1

公开(公告)日：2019-09-19

申请号：US16431062

申请日：2019-06-04

Applicant: MEDIATEK INC.

Inventor： Tzu-Der CHUANG ,  Chia-Yun CHENG ,  Han-Liang CHOU ,  Ching-Yeh CHEN ,  Yu-Chen SUN ,  Yu-Wen HUANG

IPC: H04N19/563 ,  H04N19/70 ,  H04N19/513 ,  H04N19/593

Abstract: In order to overcome the issue caused by a decoded block vector (BV) pointing to a reference block overlapping with an unavailable area, various methods are disclosed. According to one method, if the reference block overlaps with an unavailable area, the reference pixels in the unavailable area are generated for IntraBC prediction of the current block by padding from neighbouring available pixels. The padding can be done in the horizontal direction and then the vertical direction. The padding may also done in the vertical direction first and then horizontal direction. In another method, if the reference block overlaps with an unavailable area, the reference pixels in the unavailable area are generated for IntraBC prediction of the current block by using previous decoded pixels in the unavailable area. A pre-defined value may also be used for the unavailable area.

公开(公告)号：US20160227222A1

公开(公告)日：2016-08-04

申请号：US14993394

申请日：2016-01-12

Applicant: MediaTek Inc.

Inventor： Meng Jye HU ,  Chia-Yun CHENG ,  Yung-Chang CHANG

IPC: H04N19/159 ,  H04N19/436 ,  H04N19/176 ,  H04N19/117 ,  H04N19/593 ,  H04N19/105

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/117 ,  H04N19/12 ,  H04N19/176 ,  H04N19/433 ,  H04N19/436 ,  H04N19/593

Abstract: An apparatus for multi-standard Intra prediction decoding in a video decoder for decoding two video streams coded in two different video coding standards is disclosed. The apparatus comprises a first Intra prediction decoder to decode a first bitstream comprising one or more first Intra prediction coded blocks, and a second Intra prediction decoder to decode a second bitstream comprising one or more second Intra prediction coded blocks. The first Intra prediction coded blocks are coded according to a first video coding standard and the second Intra prediction coded blocks are coded according to a second video coding standard. The first Intra prediction decoder and the second Intra prediction decoder are arranged to perform Intra prediction decoding on the two video streams simultaneously by decoding the two video streams in an interleaved manner at a picture level, slice level, or largest coding unit (LCU)/macroblock (MB) level.

Abstract translation: 公开了一种用于解码以两种不同视频编码标准编码的两个视频流的视频解码器中的多标准帧内预测解码装置。 该装置包括第一帧内预测解码器，用于对包含一个或多个第一帧内预测编码块的第一比特流进行解码，以及第二帧内预测解码器，用于对包含一个或多个第二帧内预测编码块的第二比特流进行解码。 第一帧内预测编码块根据第一视频编码标准进行编码，并且第二帧内预测编码块根据第二视频编码标准进行编码。 第一帧内预测解码器和第二帧内预测解码器被配置为通过以图像级，限幅电平或最大编码单元（LCU）/ 2的交错方式对两个视频流进行解码，同时对两个视频流进行帧内预测解码。 宏（MB）级。

公开(公告)号：US20190037223A1

公开(公告)日：2019-01-31

申请号：US16043348

申请日：2018-07-24

Applicant: MEDIATEK INC.

Inventor： Yung-Chang CHANG ,  Chia-Yun CHENG ,  Cheng-Han LI

IPC: H04N19/30 ,  H04N19/513

Abstract: A method and apparatus of scalable video coding using Inter prediction mode for a video coding system are disclosed, where video data being coded comprise BP (Basic Resolution Pass) pictures and UP (Upgrade Resolution Pass) pictures. In one embodiment according to the present invention, the method comprises receiving information associated with input data corresponding to a target block in a target UP picture. When the target block is Inter coded according to a current MV (motion vector) and uses a collocated BP picture as one reference picture, one or more BP MVs (motion vectors) of the collocated BP picture are scaled to generate one or more RCP (resolution change processing) MVs. The current MV of the target block is encoded or decoded using an UP MV predictor derived based on one or more temporal MVPs including said one or more RCP MVs.