Invention Grant
US07924916B2 Method and apparatus for decoding encoded groups of pictures of a video sequence and presenting said video sequence and said groups of pictures in temporally backward direction
有权
用于对视频序列的编码组图像进行解码并在时间上向后方向呈现所述视频序列和所述图像组的方法和装置
- Patent Title: Method and apparatus for decoding encoded groups of pictures of a video sequence and presenting said video sequence and said groups of pictures in temporally backward direction
- Patent Title (中): 用于对视频序列的编码组图像进行解码并在时间上向后方向呈现所述视频序列和所述图像组的方法和装置
-
Application No.: US11211772Application Date: 2005-08-25
-
Publication No.: US07924916B2Publication Date: 2011-04-12
- Inventor: Dirk Adolph , Carsten Herpel , Jobst Hörentrup , Uwe Janssen , Ralf Ostermann , Hartmut Peters , Andrej Schewzow , Marco Winter
- Applicant: Dirk Adolph , Carsten Herpel , Jobst Hörentrup , Uwe Janssen , Ralf Ostermann , Hartmut Peters , Andrej Schewzow , Marco Winter
- Applicant Address: FR Boulogne-Billancourt
- Assignee: Thomson Licensing
- Current Assignee: Thomson Licensing
- Current Assignee Address: FR Boulogne-Billancourt
- Agent Robert D. Shedd; Paul P. Kiel; Guy H. Eriksen
- Priority: EP04090338 20040902
- Main IPC: H04N7/12
- IPC: H04N7/12
Abstract:
MPEG video uses motion compensated prediction for coding pictures. A GOP includes at least one intra-coded picture to start decoding with and a number of inter-coded pictures and normally also includes bi-directionally predicted pictures. However, the GOP structure is not constructed for playing GOPs in backward direction in a trickplay mode across GOP boarders. The invention facilitates, for different GOP structures, a smooth backward video mode thereby reducing the required number of frame buffers and achieving near real-time speed presentation. In some embodiments some I and/or P pictures are decoded more than once. The invention also allows backwards decoding of MPEG-4-AVC GOPs including B-stored pictures.
Public/Granted literature
Information query
