H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 7/26 (2006.01) G06T 9/00 (2006.01) H04N 7/46 (2006.01) H04N 7/64 (2006.01) H04N 7/68 (2006.01) H04N 7/52 (2006.01)
Patent
CA 2308220
A system and method for buffering a plurality of divisions of a signal prior to transmission of the signal is disclosed. The buffering (buffers 0-59, Figure 8a) is configured to prevent error propagation during decoding of the transmitted signal. A set of encoding levels at a transmission rate is selected from a threshold table having a plurality of encoding levels. Each set of encoding levels includes a plurality of ranges configured to select encoding bits (Figure 8). Each division of the signal is encoded using the set of encoding levels (step 4, Figure 3). In one embodiment, this is used in the transmission of video signals over a potentially lossy communications channel.
L'invention concerne un système et un procédé servant au tamponnage de plusieurs divisions d'un signal avant transmission. Le tamponnage (800) est configuré pour prévenir la propagation d'erreurs lors du décodage du signal transmis. Un ensemble de niveaux de codage à un taux de transmission donné est sélectionné dans une table de seuil comportant plusieurs niveaux de codage. Chaque ensemble de niveaux de codage comprend plusieurs gammes configurées pour sélectionner les bits codants. Chaque division du signal est codée au moyen de l'ensemble de niveaux de codage. Dans un mode de réalisation, on utilise le système et le procédé de l'invention pour la transmission de signaux vidéo via une voie de communication présentant un risque de pertes.
Carrig James J.
Fujimori Yasuhiro
Ghosal Sugata
Kondo Tetsujiro
Gowling Lafleur Henderson Llp
Sony Electronics Inc.
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