H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 1/08 (2006.01) G08C 25/02 (2006.01) H04N 7/26 (2006.01) H04N 7/50 (2006.01) H04N 7/68 (2006.01) H04N 7/173 (2006.01) H04N 7/24 (2006.01)
Patent
CA 2176484
The present invention provides a signal loss recovery device (400) and method for digitally encoded bitstreams produced by predictive encoders, for realtime and/or interactive communications. The signal loss recovery device (400) recovers the lost or damaged information by sending a retransmission request for the lost information from transmission receiver (302). Compared to the previously known retransmission technique, this device does not introduce extra buffer delay. The elimination of this buffer delay is realized by continuously processing the received data while waiting for the arrival of the retransmission. The information is reinserted into the error corrupted signal to restore the output signal to its original form without signal loss.
L'invention porte sur un dispositif de récupération (400) de signaux perdus dans des flux de bits à codage numérique générés par des codeurs prédictifs pour des liaisons en temps réel et/ou interactives, et sur le procédé associé (500, 600, 1000, 1100, 1200). Le dispositif de récupération (400) de signaux perdus récupère l'information perdue ou altérée en envoyant une demande de retransmission des informations perdues à partir du récepteur de transmission (302). En comparaison aux techniques antérieures de retransmission, le dispositif n'introduit pas de retard supplémentaire dû aux tampons. L'élimination de ce retard se fait en traitant en continu les signaux reçus pendant qu'on attend l'arrivée de la retransmission. L'information est réinsérée dans le signal altéré pour restaurer le signal de sortie, sans perte, sous sa forme originale.
Gowling Lafleur Henderson Llp
Motorola Inc.
Motorola Mobility Inc.
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