frames the composite output may then be fed to an external video recorder 27 or to a video transmitter in fig2 the reproduction system receives the input signal from a video player or transmitter the composite video signal is fed into the tv sync and data selector block 30 which synchronizes the reproduction system to the incoming video and separates the luminance encoded data stream from the actual video signal the luminance encoding data stream is then fed into luminance data decoder 31 where the encoded signal is converted back into data packets the data packets are then fed to a data packet separator 32 which separates the actual data from the packet synchronizing signals and feeds the data into error correction circuits 33 which check the validity of the data and correct if necessary any errors that may have occurred the signal is then fed to audio digital to analog d a signal converters 34 which covert the digital signals back into the original analog signals low pass filters lpf 35 are employed to remove any higher order components created by the processing system and the outputs are then fed to buffer amplifiers 36 and to the outputs 14 15 16 and 17 of the processing unit fig3 illustrates how four individual.