Patent ID: 6801532
Filing Date: 2004-10-05
Classification: H04B,H04W

Abstract:
A process of reconstructing a stream of packets, each packet having a primary stage containing real-time information and a secondary stage containing diversity information of real-time information contained in the primary stage of a packet occurring prior in the stream, the diversity information being only information representing Linear Predictive Coding, Longterm Prediction lags, parity check, and adaptive and fixed codebook gains, the packet stream having an instance of a single packet loss, and the process comprising:A. receiving a packet sequence represented by: P(n)P(nâˆ’1)â€², [Lost Packet], P(n+2)P(n+1)â€², and P(n+3)P(n+2)â€²; B. obtaining the diversity information from the secondary stage in a packet following the lost packet including obtaining information representing Linear Predictive Coding, and at least one of Longterm Prediction lags, parity check, and adaptive and fixed codebook gains; and C. performing an excitation reconstruction from the obtained diversity information to reconstruct the lost packet.