Switching between bit-streams in video transmission

H - Electricity – 04 – N

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H04N 7/26 (2006.01) H04N 7/50 (2006.01) H04N 7/64 (2006.01) H04N 7/24 (2006.01) H04N 7/58 (2006.01)

Patent

CA 2431866

The invention relates to a method for transmitting video information, in which at least a first bit-stream (510) and a second bit-stream are formed. The first bit-stream (510) comprises at least one video frame, and the second bit- stream (520) comprises at least one predictive video frame (524). At least partly different encoding parameters are used with encoding of the frames of said first bit-stream (510) and said second bit-stream (520). At least one frame of said first bit-stream (510) is being transmitted, and the transmission is switched over from said first (510) to said second bit-stream (520). In switching the transmission over from said first (510) to said second bit-stream (520), a secondary switching frame (550) is transmitted, which have been encoded using the encoding parameters of the second bit-stream (520) and at least one reference frame from the first bit-stream (510). Said secondary switching frame (550) is used as a reference frame in the reconstruction of said at least one predictive video frame (524) of the second set of video frames. The invention also relates to an encoder for encoding video information, a decoder for decoding a video information, and a signal representing encoded video information.

L'invention concerne un procédé servant à transmettre une information vidéo et consistant à créer au moins un premier train de bits (510) et un deuxième train de bits. Le premier train de bits (510) comprend au moins une trame vidéo et le deuxième train de bits (520) comprend au moins une trame vidéo prédictive (524). On utilise des paramètres de codage au moins partiellement différents afin de coder les trames dudit premier train de bits (510) et dudit deuxième train de bits (520). Au moins une trame dudit premier train de bits (510) est effectivement transmise et cette transmission est commutée depuis ledit premier (510) jusqu'audit deuxième train de bits (520). Pendant la commutation de la transmission du premier (510) au deuxième train de bits (520), une trame de commutation secondaire (550) est transmise, cette trame secondaire ayant été codée au moyen des paramètres de codage du deuxième train de bits (520) et d'au moins une trame de référence provenant du premier train de bits (510). On utilise ladite trame de commutation secondaire (550) en tant que trame de référence pour la reconstruction de ladite trame vidéo prédictive (524) du deuxième ensemble de trames vidéo. L'invention concerne également un codeur servant à coder des informations vidéo, un décodeur servant à décoder des informations vidéo, ainsi qu'un signal représentant les informations vidéo codées.

LandOfFree

Say what you really think

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

Rating

Switching between bit-streams in video transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Switching between bit-streams in video transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching between bit-streams in video transmission will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1507769

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