Method and apparatus for coding digital video signals

H - Electricity – 04 – N

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H04N 7/50 (2006.01) G06T 9/00 (2006.01) H04N 7/26 (2006.01)

Patent

CA 2206454

For future digital television broadcasting and the interactive communications services associated therewith, video data must be greatly reduced in terms of their volume of data by means of suitable coding devices. One coding method provided for this is the MPEG2 standard. If, during the coding, a change in the picture scene occurs within successive Groups of Pictures, no rational basis for the prediction of the B and P frames exists for the current Group of Pictures. As a result, the reconstruction result in the decoder will remain unsatisfactory. According to the invention, such scene changes are detected and the first picture of the new scene is intraframe-coded.

La télédiffusion numérique future et les services de communication interactifs qui lui sont associés exigent une réduction importante du volume des données vidéo correspondantes, cette réduction étant réalisée par des dispositifs de codage appropriés. La norme MPEG2 est une méthode fournie dans ce but. Si, pendant le codage, un changement se produit dans la scène d'image à l'intérieur de groupes d'images successifs, il n'existe pas de fondement rationnel pour la prédiction des trames B et P pour le groupe d'images actuel. Il en découle que le résultat de la reconstitution dans le décodeur demeurera insatisfaisant. La présente invention permet la détection de ces changements et la première image de la nouvelle scène subit un codage intratrame.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for coding digital video signals does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for coding digital video signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for coding digital video signals will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1755381

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.