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：US20180109796A1

公开(公告)日：2018-04-19

申请号：US15782886

申请日：2017-10-13

Applicant: MEDIATEK INC.

Inventor： Min-Hao CHIU ,  Hsiu-Yi LIN ,  Chia-yun CHENG ,  Chih-Ming WANG ,  Yung-Chang CHANG

IPC: H04N19/159 ,  H04N19/577 ,  H04N19/70 ,  H04N19/172 ,  H04N19/105

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/172 ,  H04N19/52 ,  H04N19/577 ,  H04N19/70

Abstract: A method and apparatus for video encoding or decoding used by a video encoder or decoder respectively are disclosed. 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.