Patent ID: 7899114

Claim:
In a wireless communication channel for transmitting compressed digital video data from transmitter to a receiver, a method of hardening a transmitted video data stream to avoid image interruptions despite changing channel conditions; the method comprising the steps of: a) organizing streaming video frames into scenes defined by a single M-frame and a number of corresponding D-frames where M is meaningful and D is daughter and D-frames not significantly changed from their corresponding M-frame; b) calculating the mean square error (MSE) of a video stream that is compressed, transmitted through said channel and reconstructed at the receiver, said calculation being carried out by highly parallel processors to compare pixel intensity variation between the M-frame and corresponding daughter frames of respective scenes; c) deriving peak-signal-to-noise-ratio from the measured MSE to indicate quality of communication; d) periodically transmitting known data through said communication channel to establish a statistical relation between peak-signal-to-noise-ratio and bit error rate for changing channel conditions; and e) depending upon the outcome of steps c) and d), providing at least one of forward bit error correction and compression ratio modification to change hit error rate to avoid image interruptions.