The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 2011
Filed:
Aug. 25, 2005
Dirk Adolph, Ronnenberg, DE;
Carsten Herpel, Wennigsen, DE;
Jobst Hörentrup, Hannover, DE;
Uwe Janssen, Seelze, DE;
Ralf Ostermann, Hannover, DE;
Hartmut Peters, Barsinghausen, DE;
Andrej Schewzow, Hannover, DE;
Marco Winter, Hannover, DE;
Dirk Adolph, Ronnenberg, DE;
Carsten Herpel, Wennigsen, DE;
Jobst Hörentrup, Hannover, DE;
Uwe Janssen, Seelze, DE;
Ralf Ostermann, Hannover, DE;
Hartmut Peters, Barsinghausen, DE;
Andrej Schewzow, Hannover, DE;
Marco Winter, Hannover, DE;
Thomson Licensing, Boulogne-Billancourt, FR;
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.