Device and method of signal loss recovery for realtime and/or in

Details Device and method of signal loss recovery for realtime and/or in Device and method of signal loss recovery for realtime and/or in

1994-10-11

1996-08-27

Envall, Jr., Roy N.

Excavating

348409, G08C 2502

Patent

active

055508472

ABSTRACT:
The present invention provides a signal loss recovery device (300; 400; 900) and method (500; 600; 1000; 1100; 1200) of digitally encoded bitstreams produced by predictive encoders, for realtime and/or interactive communications. The signal loss recovery device (300; 400; 900) of this invention recovers the lost or damaged information by requesting the transmitter for retransmitting the lost information. Compared to the previously known retransmission technique, the device in this invention does not introduce any 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 contained in the retransmitted data is reinserted into the error corrupted signal to restore the output signal to its original form without signal loss.

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Qin-Fan Zhu, Yao Want, and Leonard Shaw, "Coding and Cell-Loss Recovery in DCT-Based Packet Video", IEEE Transactions on Circuits and Systems for Video Technology, vol., 3, No. 3, Jun. 1993, pp. 248-258.

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