公开(公告)号：US20180199031A1

公开(公告)日：2018-07-12

申请号：US15794253

申请日：2017-10-26

申请人： MStar Semiconductor, Inc.

发明人： He-Yuan LIN

IPC分类号： H04N19/105 ,  H04N19/625 ,  H04N19/146

CPC分类号： H04N19/105 ,  H04N19/103 ,  H04N19/146 ,  H04N19/147 ,  H04N19/149 ,  H04N19/176 ,  H04N19/567 ,  H04N19/625

摘要： A video encoding apparatus is provided. A controller in the video encoding apparatus includes a sum calculating circuit, a data amount estimating circuit, and an evaluating circuit. Each of a plurality of intra-prediction and motion compensation modes corresponds to a set of transformed/quantized residual data. The sum calculating circuit calculates, for each set of transformed/quantized residual data, a sum of absolute values of non-zero elements therein and a sum of coordinate values of these non-zero elements relative to a reference point. The data amount estimating circuit generates, for each intra-prediction and motion compensation mode, an estimated data amount according to the sum of absolute values and the sum of absolute values of the coordinate values of corresponding transformed and quantized residual data. The evaluating circuit selects a best mode from the plurality of intra-prediction and motion compensation modes according to the plurality of estimated data amounts.

公开(公告)号：US20180184090A1

公开(公告)日：2018-06-28

申请号：US15842986

申请日：2017-12-15

申请人： MStar Semiconductor, Inc.

发明人： Pai-Chin LIU ,  He-Yuan LIN

IPC分类号： H04N19/13 ,  H04N19/70

CPC分类号： H04N19/13 ,  H04N19/1887 ,  H04N19/70 ,  H04N19/91

摘要： A binary arithmetic coding apparatus is implemented in a video encoder chip. The binary arithmetic coding apparatus outputs a code word according to a syntax element value, and includes a look-up table (LUT), a suffix generator and a combiner. The LUT outputs a first binary string according to the syntax element value. The suffix generator performs exp-Golomb binarization on the syntax element value to generate a second binary string. When the syntax element value is smaller than or equal to a threshold, the first binary string is outputted as the code word. When the syntax element value is greater than the threshold, the combiner combines the first binary string and the second binary string to form the code word.

公开(公告)号：US20170155918A1

公开(公告)日：2017-06-01

申请号：US14992384

申请日：2016-01-11

申请人： MStar Semiconductor, Inc.

发明人： He-Yuan LIN ,  Ya-Ting YANG ,  Yi-Shin TUNG

IPC分类号： H04N19/44 ,  H04L29/06

CPC分类号： H04N19/44 ,  H04L65/607 ,  H04N19/132 ,  H04N19/156 ,  H04N19/172

摘要： A stream decoding method is provided. The stream includes a plurality of frames. The method includes: obtaining a display order of a current frame that belongs to a group by parsing a header of the current frame; and determining whether to decode the current frame or to drop instead of decoding the current frame according to the display order of the current frame.